Relevant bibliographies by topics / Tracer test

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Academic literature on the topic 'Tracer test'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "Tracer test"

1

Dalla Man, Chiara, Andrea Caumo, Rita Basu, Robert Rizza, Gianna Toffolo, and Claudio Cobelli. "Minimal model estimation of glucose absorption and insulin sensitivity from oral test: validation with a tracer method." American Journal of Physiology-Endocrinology and Metabolism 287, no. 4 (October 2004): E637—E643. http://dx.doi.org/10.1152/ajpendo.00319.2003.

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Measuring insulin sensitivity during the physiological milieu of oral glucose perturbation, e.g., a meal or an oral glucose tolerance test, would be extremely valuable but difficult since the rate of appearance of absorbed glucose is unknown. The reference method is a tracer two-step one: first, the rate of appearance of glucose (Ra mealref) is reconstructed by employing the tracer-to-tracee ratio clamp technique with two tracers and a model of non-steady-state glucose kinetics; next, this Ra mealref is used as the known input of a model describing insulin action on glucose kinetics to estimate insulin sensitivity (SIref). Recently, a nontracer method based on the oral minimal model (OMM) has been proposed to estimate simultaneously the above quantities, denoted Ra meal and SI, respectively, from plasma glucose and insulin concentrations measured after an oral glucose perturbation. This last method has obvious advantages over the tracer method, but its domain of validity has never been assessed against a reference method. It is thus important to establish whether or not the “nontracer” Ra meal and SI compare well with the “tracer” Ra mealref and SIref . We do this comparison on a database of 88 subjects, and it is very satisfactory: Ra meal profiles agree well with the Ra mealref and correlation of SIref with SI is r = 0.86 ( P < 0.0001). We conclude that OMM candidates as a reliable tool to measure both the rate of glucose absorption and insulin sensitivity from oral glucose tests without employing tracers.
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Braconnier, Benjamin, Christophe Preux, Frédéric Douarche, and Bernard Bourbiaux. "MUSCL scheme for Single Well Chemical Tracer Test simulation, design and interpretation." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 74 (2019): 10. http://dx.doi.org/10.2516/ogst/2018090.

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Our paper presents an improved numerical scheme to simulate Single Well Chemical Tracer Test (SWCTT) method. SWCTT is mainly applied to determine the residual oil saturation of reservoirs. It consists in injecting an aqueous slug of a primary tracer into the reservoir formation and displacing it at a certain distance from the well. This tracer is partly miscible with oil on the one hand, and generates in situ a secondary tracer on the other hand. As a consequence, a shift is observed between the primary and the secondary tracers arrival times when production is resumed. This time shift is used to evaluate the residual oil saturation. In our paper, we propose a numerical scheme based on a fractional time stepping technique to decouple the resolution of the phases mass conservation equations and the chemical tracers mole conservation equations. For the phases resolution, we use an implicit scheme to ensure stability and robustness. For the chemical tracers, we propose an explicit second-order scheme in time and in space via MUSCL technique to improve the tracers time-shift calculation. The proposed numerical method is implemented on a realistic simulation model consisting of a vertical well crossing a reservoir consisting of a stack of homogeneous layers. By reducing the numerical dispersion, the proposed scheme improves the accuracy of predicted concentration profiles, without significantly increasing the computation time. Finally, the advantages of using a second-order scheme for residual oil saturation assessment are discussed on the basis of a radial 1D mesh convergence study.
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Cobelli, C., G. Toffolo, and D. M. Foster. "Tracer-to-tracee ratio for analysis of stable isotope tracer data: link with radioactive kinetic formalism." American Journal of Physiology-Endocrinology and Metabolism 262, no. 6 (June 1, 1992): E968—E975. http://dx.doi.org/10.1152/ajpendo.1992.262.6.e968.

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A kinetic formalism for the analysis of stable isotope transient tracer data is developed by establishing the link with the formalism available for radioactive tracer data. The crucial variable is the tracer-to-tracee ratio. By expressing the measurements in terms of this ratio, the conventional kinetic formalism used for radioactive data can be applied to estimate noncompartmental parameters using stable isotope tracer data. The tracer-to-tracee ratio also plays an important role in compartmental modeling. By considering the tracer masses in the compartments as state variables the system-experiment model can be written in a format analogous to that usually adopted for the radioactive tracer. Finally, it is shown that the tracer-to-tracee ratio also plays a role in a test of the endogenous steady-state assumption.
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Jakobsen, R., K. Høgh Jensen, and K. L. Brettmann. "Tracer Test in Fractured Chalk." Hydrology Research 24, no. 4 (August 1, 1993): 263–74. http://dx.doi.org/10.2166/nh.1993.0007.

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A two-well tracer test was conducted in eastern Denmark, in which a short duration pulse of lithium chloride was injected into a recharge well and made to flow through a fractured chalk aquifer to a discharge well. The wells were 25 m apart, and the concentration of lithium arriving at the discharge well was monitored at five vertical intervals in the well for a 21-day period. The observed breakthrough curves show a sharp breakthrough front, with an arrival time that is consistent with advective transport through the fractures in the chalk. The breakthrough curves also exhibit a long tail in the falling limb, suggesting the influence of a secondary transport mechanism of diffusion into the porous matrix.
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Brettmann, K. L., K. Høgh Jensen, and R. Jakobsen. "Tracer Test in Fractured Chalk." Hydrology Research 24, no. 4 (August 1, 1993): 275–96. http://dx.doi.org/10.2166/nh.1993.0008.

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A two-well tracer test carried out in fractured chalk was analyzed using a three-dimensional finite-difference model for flow and transport which, was constructed on the basis of the geological and hydraulic information collected at the field site. The model was developed as a dual-porosity continuum model, in which advection was assumed to occur only in the fractures, and the water in the porous matrix was assumed to be static. The exchange of solute between the fractures (mobile phase) and the porous matrix (immobile phase) was assumed to occur as a diffusion process in response to the local concentration difference of solute between the two phases. Simulations from the dual-porosity model reproduced the shape of the observed breakthrough curves, although some portions of the tail were not accurately represented. The model was also applied as a single-porosity model for advection and dispersion in the fractures with no solute exchange with the porous matrix. The simulations from the single-porosity model greatly overestimated the observed lithium concentrations, and showed very little tailing effect in the falling limb. The study shows that, based on the given tracer test, solute transport in a fractured chalk cannot be represented by a single-porosity approach and hence when dealing with contaminant transport in such systems, both a fractured and a porous domain need to be considered.
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Wang, Jiahao, Zunan Fu, Yanming Yu, Guoshuai Wang, Li Shi, Zhiying Yuan, Kang Yao, and Jie He. "Numerical Investigating on Representativeness of Tracers in PIV Model Test of Dredged Slurry Treated by Vacuum Preloading." Applied Sciences 11, no. 20 (October 18, 2021): 9715. http://dx.doi.org/10.3390/app11209715.

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The vacuum preloading method is commonly adopted for improving the soft ground that the embankment of the railway line is laid on. The PIV (Particle Image Velocimetry) technique is a powerful tool in observing the formation of the soil column, a phenomenon that is unique to the dredged slurry when treated by vacuum preloading. However, it is not clear to what extent the motions of the slurry particles can be represented by the PIV tracers. In this paper, a mesoscopic model has been established by using the CFD-DEM method to reproduce the vacuum consolidation process of the slurry, in which the PVD (Prefabricated Vertical Drain) membrane, the slurry particles, and the tracers are described by the DEM, and the pore water is governed by the CFD method. Eight computational cases that can cover a broad range of material parameters governing the PIV model tests on the dredged slurry have been designed and studied by the established model. The representativeness of the PIV tracer is evaluated by comparing the statistic displacement of the tracer to that of the slurry particles. It is found that for the commonly used tracer, the carbon powder, can reliably represent the particle motions of the slurry since the difference in displacements of the tracer and the slurry particles is smaller than 6.5% if the diameter ratio between the tracer and the slurry particle is within 1.8.
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Qiu, Huiyang, Rui Hu, Yong Huang, and Willis Gwenzi. "Detection and Quantification of Dam Leakages Based on Tracer Tests: A Field Case Study." Water 14, no. 9 (May 1, 2022): 1448. http://dx.doi.org/10.3390/w14091448.

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Leakage is a common phenomenon in dams, and its early detection is critical for dam safety. In the present study, a new method based on tracer tests is applied to detect and quantify leakage in the Wanyao Dam, Jiangshan City, China. The objective is to detect the leakage zone of a dam wall by combining the natural tracer test and the artificial tracer test. Temperature, electrical well-logging tests with nature tracers, and the artificial tracer test with salt (NaCl) were conducted using 48 and 5 pre-existing boreholes, respectively. Using natural tracer tests, the 48 boreholes are categorized into 4 leakage classes: (1) Class 1, high connectivity within whole borehole; (2) Class 2 high connectivity at lower depths; (3) Class 3, weaken connectivity; and (4) Class 4, safe boreholes with no connectivity. Using the proposed method, specific leakage rates of some boreholes were estimated. The results of the new method are validated by comparison with those from natural tracer tests, site-investigation, and historical observation data. Overall, the new tracer test has the following merits: (1) low cost, (2) environment friendliness, and (3) is simple to apply. Moreover, the proposed method improves the accuracy of traditional tracer tests for detecting leakage zones.
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Mukhutdinova, Alfiya R., Alexander V. Bolotov, Oleg V. Anikin, and Mikhail A. Varfolomeev. "Algorithm for estimating boundary conditions of a distributed tracer for application in a single-well tracer test." Georesursy 24, no. 4 (December 20, 2022): 75–81. http://dx.doi.org/10.18599/grs.2022.4.6.

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An important tool in determining residual oil saturation today is the single-well tracer test, as the preferred method for assessing the potential for using enhanced oil recovery methods (EOR) and developing pilot projects. The success of the test performed directly depends on the optimal choice of the tracer composition, which will contribute to the qualitative determination of the parameters required in the calculation of the residual oil saturation of the formation. To assess the boundary conditions for the applicability of the tracer in the field, the kinetic and thermodynamic properties of tracers are considered under various reservoir conditions of the field. Based on the results of this work, an algorithm for assessing the applicability of the tracer for reservoirs in a wide range of salinity and temperatures is presented.
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Man, Chiara Dalla, Andrea Caumo, Rita Basu, Robert Rizza, Gianna Toffolo, and Claudio Cobelli. "Measurement of selective effect of insulin on glucose disposal from labeled glucose oral test minimal model." American Journal of Physiology-Endocrinology and Metabolism 289, no. 5 (November 2005): E909—E914. http://dx.doi.org/10.1152/ajpendo.00299.2004.

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The oral glucose minimal model (OMM) measures insulin sensitivity (SI) and the glucose rate of appearance (Ra) of ingested glucose in the presence of physiological changes of insulin and glucose concentrations. However, SI of OMM measures the overall effect of insulin on glucose utilization and glucose production. In this study we show that, by adding a tracer to the oral dose, e.g., of a meal, and by using the labeled version of OMM, OMM* to interpret the data, one can measure the selective effect of insulin on glucose disposal, [Formula: see text]. Eighty-eight individuals underwent both a triple-tracer meal with the tracer-to-tracee clamp technique, providing a model-independent reference of the Ra of ingested glucose ([Formula: see text]) and an insulin-modified labeled intravenous glucose tolerance test (IVGTT*). We show that OMM* provides not only a reliable means of tracing the Ra of ingested glucose (Ra meal) but also accurately measures [Formula: see text]. We do so by comparing OMM* Ra meal with the model-independent [Formula: see text] provided by the tracer-to-tracee clamp technique, while OMM* [Formula: see text] is compared with both [Formula: see text], obtained by using as known input [Formula: see text], and with [Formula: see text] measured during IVGTT*.
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Čenčur Curk, Barbara. "Tracer test on the Dragonja landfill." Geologija 63, no. 2 (December 7, 2020): 193–201. http://dx.doi.org/10.5474/geologija.2020.016.

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The paper presents the results of a tracer experiment with the uranine tracer at the non-hazardous landfill of Dragonja. The purpose of the tracer test was to determine the dynamics of the potential pollutants from the landfill to the groundwater. The landfill lies on the thicker weathered layer of flysch rock that forms the slope of the hill. At the foot of the hill are silty clay and partly sandy alluvial sediments of the Dragonja River. The transport of uranine depends on the intensity and duration of precipitation, potential evapotranspiration, permeability, precipitation infiltration into the landfill, and saturation of the weathering layer of flysh. Uranine first appeared in the observation well P2, which is located downstream of the injection point, in the direction of water flow. Observation well P1 is not in the direction of direct flow and therefore only the edge of the dispersed tracer plume appeared in P1. The groundwater from the flysch weathered layer drains into the alluvial plain and the uranine concentrations are diluted in the groundwater. In the observation well P5 a slow increase and decrease of the uranium concentration was therefore observed. Due to the high evapotranspiration, the groundwater levels were falling until October, when they began to rise after autumnal precipitation events. The tracer experiment confirmed the heterogeneity and complexity of the geological structure of the landfill site.
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Dissertations / Theses on the topic "Tracer test"

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LeBlanc, Denis R. "Density and recharge effects during the Cape Cod natural-gradient tracer test." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/84242.

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Simon, Michelle A. "Analysis of a gas-phase partitioning tracer test conducted in fractured media." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280654.

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This work successfully applied the gas-phase partitioning tracer method to determine the NAPL, water and air saturations in the vadose zone at the field scale. This project was one of the first, and still one of the few, field-scale gas-phase partitioning tracer tests. This work differs from other work in that it was conducted in a high water content, fractured clay. There were three primary components of this work. First, gas-phase tracers were identified and their NAPL-air and Henry's Law constants measured. There were four types of tracers used in this study: noble gases or nonpartitioning tracers; alkanes, which were expected to be nonpartitioning tracers; perfluorides, NAPL partitioning tracers; and halons, NAPL and water partitioning tracers. A laboratory method for measuring NAPL-air partition coefficients was developed and TCE-air partition coefficients were measured for the perfluoride and halon tracers. The second component of this study involved conducting a field-scale gas-phase partitioning tracer test, the results which were used to estimate NAPL, water and air saturations. The NAPL saturation, calculated to be an extremely low value, resulted in an estimate of NAPL mass present that is similar to the amount that has subsequently been extracted from the test site via SVE remediation. The alkane tracers, which had been used previously in laboratory column studies as nonpartitioning tracers, were more retarded than the perfluoride tracers at this site. It was the alkane tracers, and not the halon tracers, that were used to determine the water content. The water content was estimated to be approximately 90%, which is unexpectedly high for a vadose zone. Additionally, the tracer response time, vacuum data, and other geological data indicated that the tracer test was performed in fractured clay. The third component of this work comprised an analysis of the tracer test data to determine transport parameters. The analysis employed matching eight simple mathematical models to the experimental data. All of the models tested: two porous, three double-porosity, and three fracture-based (single fracture, multifracture, fracture-matrix) models could reasonably match the experimental data and no one model resulted in consistently superior predictions than the others.
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Cao, Viet [Verfasser], Tobias [Akademischer Betreuer] Licha, Tobias [Gutachter] Licha, and Volker [Gutachter] Thiel. "Tracer compounds in geothermal reservoirs: Improving the outcome quality of a tracer test / Viet Cao ; Gutachter: Tobias Licha, Volker Thiel ; Betreuer: Tobias Licha." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/1156780136/34.

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Kaya, Tevfik. "Characterization Of Kizilcahamam Geothermal Field By Tracer Testing." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606634/index.pdf.

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ABSTRACT CHARACTERIZATION OF KIZILCAHAMAM GEOTHERMAL FIELD BY TRACER TESTING Tevfik Kaya M.S, Petroleum and Natural Gas Engineering Department Supervisor : Assoc. Prof. Dr. Serhat Akin Co-Supervisor : Prof. Dr. Mahmut Parlaktuna September 2005, 107 Pages Kizilcahamam Geothermal Field which is 70 km far from Ankara, has been utilized for Geothermal District Heating System, 25 MWt, 2500 residences capacity, greenhouses heating, thermal facilities since 1994. The average production rate is 350m3/h during the heating season , 150m3/h during the summer season for hot water and yearly average reinjection rate is 114m3/h from the field. The long term projections has been studied concerning on expected pressure decline by matching 10 years field history data which contain dynamic level and temperature data. The pressure decline is 140 kPa in the field between 1999 and 2005 with the existing reinjection rate, if the existing rates do not change, the additional pressure decline which is 120 kPa will be occurred up to 2011. In order to get more information from the field, the fluorescein as tracer has been injected in to the MTA-1, and the samples were collected from the MTA-2, Fethi Bey, IHL-1 and IHL-3 for 3 months. The fluorescein concentration has been detected by using fluorimeter, and tracer concentration time plots were analyzed. The fluoreiscein was detected in short breakthrough time in MTA-2 and Fethi Bey which are close to reinjection well, breakthrough time is longer in IHL-1 and IHL-3. The interpretation of tracer test shows that there is communication between all wells. Tracer concentration time plots were compared with different mathematical models, the best match was obtained with multi-fractured model. These results show that Kizilcahamam field is not homogeneous field. It is expected that increasing the reinjection rate will decrease the pressure decline in the field.
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Crestani, Elena. "Tracer Test Data Assimilation for the Assessment of Local Hydraulic Properties in Heterogeneous Aquifers." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3426637.

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The hydraulic conductivity distribution in a natural porous media is characterized by a great heterogeneity that makes its spatial assessment problematic and expensive. At the same time, a detailed knowledge of the hydraulic properties, as porosity, storativity, transmissivity and hydraulic conductivity K, is fundamental for the prediction of groundwater flow and solute transport in natural formations. Among the hydraulic properties, being the subsurface transport phenomena in natural formations mainly controlled by the Darcy's law, the proper definition of the K spatial distribution at different scales plays a fundamental role to evaluate the evolution of a contaminant plume, to define the well-catchment areas or to monitor a landfill site. To estimate aquifer hydraulic properties, inverse models have long been studied and, beyond the traditional hydraulic conductivity and head measurements, tracer test analyses have been widely adopted in the past and their use have increased in the recent years thanks to a great improvement of geophysical techniques. Among others, the Electrical Resistivity Tomography (ERT) allows to monitor a tracer test injection, providing time-lapse informations about the plume evolution with limited cost. Assuming that time-lapse spatially distributed data deduced from a tracer test are available, the present work investigates different approaches aimed to the estimation of the local K distribution. At this purpose, Kalman filter based data assimilation techniques are coupled with the Lagrangian transport model and applied in different synthetic contexts
La distribuzione di conducibilità idraulica in un mezzo poroso naturale è caratterizzata da grande eterogeneità, che rende la sua determinazione problematica e costosa. Allo stesso tempo, una approfondita conoscenza delle proprietà idrauliche, quali la porosità, l'immagazzinamento specifico e la conducibilità idraulica K, è di fondamentale importanza per poter predire e analizzare il flusso sotterraneo e il trasporto di soluti in formazioni naturali. Poichè i fenomeni di trasporto sotterraneo che si realizzano negli acquiferi sono principalmente controllati dalla legge di Darcy, tra le diverse proprietà idrauliche sopraccitate, un'opportuna definizione della distribuzione spaziale di K gioca un ruolo fondamentale nella predizione del plume di inquinanti, e quindi assume particolare rilevanza in molte attività di pratico interesse, quali la definizione delle aree di salvaguardia dei pozzi o il monitoraggio di discariche. Le proprietà idrauliche degli acquiferi sono di norma stimate con l'ausilio di modelli inversi utilizzando, oltre le tradizionali misure di conducibilità idraulica e piezometria, quelle derivanti da analisi di iniezioni controllate (test con traccianti o tracer test nella comune dizione anglosassone). I test con traccianti sono stati in diverse occasioni adottati nel passato ma il loro uso è aumentato negli anni recenti grazie agli sviluppi delle tecniche geofisiche che semplificano il monitoraggio delle prove in situ. Fra queste, la Tomografia Elettrica Resistiva (ERT) sembra essere la più appropriata per misurare le quantità di interesse nel caso di iniezioni di traccianti, essendo possibile acquisire un grande numero di informazioni sull'evoluzione spazio-temporale dell'evoluzione del plume, a costi relativamente limitati. Partendo dal presupposto che siano disponibili misure derivanti da una iniezione controllata in pozzo, il presente lavoro suggerisce alcuni approcci che, sulla base dei dati deducibili dalle misure ERT, permettono di stimare la distribuzione spaziale di K e verifica la loro effettiva capacità predittiva. Tali modelli risultano dall'accoppiamento di tecniche basate sul filtro di Kalman con modelli di trasporto Lagrangiano: l'applicazione ad una estesa serie di casi sintetici ha permesso inoltre di ottenere utili indicazioni in relazione a vantaggi e svantaggi di ciascuna delle metodologie proposte
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October, Adolf Gerswin. "Development of a conceptual model for ash dump system using hydraulic and tracer test techniques." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_1072_1367481543.

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Coal provides for 77% of South Africa&rsquo
s primary energy needs and is therefore a major resource that supports the socio-economic needs of South African citizens. Power stations are the major consumers of coal in South Africa and produces electricity from burned coal. The burning of coal produces a large volume of ash that is disposed in the form of ash dump systems. The ash 
dump system is treated with high salinity process water from the power station for dust suppression. The process water contains salts due to evaporation processes from the recirculation 
 
of 
water in the cooling water system. Various studies to evaluate the sustainability of the ash dump system as a sustainable salt sink were therefore conducted. This study aimed to develop a conceptual model for the ash dump system by evaluating the movement of the process water trough the ash dump and the impacts it might have on the underlying weathered dolerite aquifer. This was achieved by evaluating the hydraulic and transport properties of the ash dump system. An initial site conceptual model was first established prior to the application of the hydraulic 
and transport methods. The initial conceptual model was based on the literature, previous reports and an initial site walk over. Known and tested hydraulic and transport methods were applied 
n bo.th field and laboratory scale for the saturated part of the ash dump system. The laboratory experiments comprised of column and core experiments. These methods assisted in 
parameter estimation of hydraulic and transport properties and also assisted in the planning of the field experiments. The field experiments were conducted in the form of slug tests, tracer 
dilution and natural gradient divergent tracer test experiments. The combined laboratory and field experiments provided statistically significant values that were then used as inputs into the 
conceptual model. Field experiments were also applied to a surrogate aquifer that represented the underlying shallow weathered dolerite aquifer of the ash dump system. The components of 
the updated conceptual model identified and investigated include the physical environment, the calculated hydraulic and transport properties.The ash dump can be conceptualized as a 20 to 
 
30 meter high heap of consolidated clay size ash 
particles built on top of an underlying shallow weathered dolerite aquifer. The ash dup is directly connected to the underlying weathered 
dolerite aquifer. The saline water within the saturated zone has the ability to move through the ash dump system with hydraulic conductivities ranging between 10-1-10- 2 m/day, with flow 
velocities of 7-8m/day and effective porosities of 1%-2%. The hydraulic properties of the ash dump are, amongst others, controlled by the ash geology, contact time of the process water with the 
sh and show a significant reduction in hydraulic conductivity over time, before reaching a steady state. The transport properties are controlled by advection and spreading in available 
pathways. Results for the surrogate underlying fractured rock aquifer show flow velocities of 31m/day and an effective porosity of 1%.This suggests that the underlying weathered dolerite 
aquifer is vulnerable to process water contamination from the ash dump system. The study illustrates the importance of a site conceptual model before the application of investigative 
methods. Hence having a site conceptual model provides an excellent platform for hydraulic and transport estimation. The development of a site conceptual model enhanced the 
understanding of flow and transport movement of the processed 
water trough the ash dump, it also assisted as a beneficial tool to enhance ash dump management.

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Brandon, Ryan. "Characterization of a hydraulically induced bedrock fracture." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50511.

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Hydraulic fracturing is a controversial practice because of concerns about environmental impacts due to its widespread use in recovering unconventional petroleum and natural gas deposits. However, water-only hydraulic fracturing has been used safely and successfully for many years to increase the permeability of aquifers used for drinking and irrigation water supply. This process extends and widens existing bedrock fractures, allowing groundwater storage to increase. Researchers have studied the behavior of fractured-rock aquifers for decades, but little has been published on the hydraulic and mechanical properties of hydraulically enhanced fractures. In this study, a multi-faceted approach consisting of aquifer and tracer testing is used to estimate the transmissivity and storage coefficient of a hydraulically induced fracture and observe its behavior as a contaminant flow pathway. The results of the aquifer tests indicated a decrease in both the transmissivity and storage coefficient of the fracture of three orders of magnitude after cessation of pumping. The aquifer temporarily experienced incomplete recovery following pumping tests, likely due to slow recharge. After complete recovery occurred, subsequent tests showed that these hydraulic properties returned to their original values, indicating elastic compression of the fracture during periods of applied stress. The results of the tracer test indicated rapid, uniform, one-dimensional flow through the fracture, with average fluid velocity approaching 1 km/day in an induced steady flow field of 6 x 10-5 m3/s (1 gal/min) and a fracture volume of 0.238 m3 (63 gal). The complex heterogeneity of fractured-rock aquifers necessitates the use of multiple lines of testing in order to arrive at a detailed description of the behavior of these systems. This study demonstrates one effective method of investigating a single fracture that can uncover information about the behavior of a hydraulically enhanced aquifer that is otherwise difficult to obtain.
Master of Science
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El, Ouni Asma. "Measuring Air-Water Interfacial Area in Unsaturated Porous Media Using the Interfacial Partitioning Tracer Test Method." Thesis, The University of Arizona, 2013. http://hdl.handle.net/10150/297008.

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Interfacial partitioning tracer tests (IPTT) are one method available for measuring air-water interfacial area (A(ia)).This study used the standard approach comprising tracer injection under steady unsaturated-flow conditions with a uniform water-saturation distribution within the column. Sodium dodecylbezene sulfonate (SDBS) and pentafluorobenzoic acid (PFBA) were used as the partitioning and nonreactive tracers, respectively. Three types of porous media were used for the study: a sandy soil, a well-sorted sand, and glass beads. Initial water saturations, S(w), were approximately 80%, 80%, and 26 % for the soil, sand, and glass beads, respectively. Water saturation was monitored gravimetrically during the experiments. The maximum interfacial areas (A(ia)/(1-S(w))) calculated from the results of the experiments are compared among the three porous media used in this work, and compared to previous air-water interfacial area studies.
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Kjellstrand, Robert. "Hydraulic Behaviour in an Activated Sludge Tank : From Tracer Test through Hydraulic Modelling to Full-Scale Implementation." Licentiate thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3390.

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Hydraulic behaviour in a large denitrifying activated sludge tank, located at the Rya Wastewater treatment plant (WWTP) in Göteborg Sweden, was investigated and optimized by using fullscale tracer test and hydraulic modelling. The Rya WWTP is a high loaded plant with a small footprint. Expansion of the site is limited due to several restrictions. An efficient use of already existing facilities is therefore of great importance in order to meet the demands of decreased effluent limits, set by authorities. The presence of a short circuiting stream was identified with full-scale tracer tests and the hydraulic situation was successfully quantified using the Martin model, a compartment model based on curve fitting to the residence time distribution curve (RTD-curve) from the full-scale tracer test. Computational fluid dynamics (CFD) 3D modelling was used for virtual prototyping of different corrective measures near the inlet to break the previously identified short circuiting stream. From an operational point of view, inlet baffles were chosen as the preferable alternative. After implementation, improved tank hydraulics, were verified with another full-scale tracer test. At a normal flow (3.6 m3/s), the space time in the tank was found to be 16 minutes. In the original tank 30 % of the water had a residence time of less than 8 minutes, 49 % of the water had a residence time between 8 and 24 minutes and 21 % of the water had a residence time of more than 24 minutes. After implementation of corrective measures, the tank with baffles had 6 % of the water with a residence time of less than 8 minutes. 77 % of the water had a residence time between 8 and 24 minutes and 17 % of the water had a residence time of more than 24 minutes. Also, the mixing characteristics in the tank achieved a more plug-flow like character. Full-scale tracer tests are very informative when investigating hydraulic situations in activated sludge tanks. Mathematical modelling using black box approach can help to quantifying the hydraulics in a tank. For example can use of the Martin model help to quantify short circuiting streams and dead volumes. CFD modelling is a useful and informative tool for analyzing problematic hydraulics at wastewater treatment plants and for the design of theoretical corrective measures. Being a useful tool for virtual prototyping, this type of modelling also deserves to have a more central role when designing large reactors and other hydraulic systems.

I. Short Circuiting in a Denitryfying Activated Sludge Tank.

R. Kjellstrand, A. Mattsson, C. Niklasson and M.J. Taherzadeh.

Water Science & Technology, Vol. 52, No. 10-11, pp 79-87, IWA Publishing 2005. II. Improved Hydraulic Behaviour in a Denitrifying Activated Sludge Tank.

R. Kjellstrand, A. Mattsson.

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Loyola, Ana Beatriz Alkmim Teixeira. "Avaliação da suscetibilidade de Aspergillus spp e Fusarium spp a antifungicos por microdiluição em caldo e sistema de monitorização de cresfimento de hifas (Biocell-tracer®)." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/308183.

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Orientador: Angelica Zaninelli Schreiber, Maria Luiza Moretti
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
Made available in DSpace on 2018-08-06T13:48:27Z (GMT). No. of bitstreams: 1 Loyola_AnaBeatrizAlkmimTeixeira_D.pdf: 5844968 bytes, checksum: 4d27c47d59746710e359ef7d4b61f1b7 (MD5) Previous issue date: 2005
Resumo: Os fungos filamentosos do gênero Aspergillus são fungos hialinos, saprófitas, encontrados no solo e na vegetação em decomposição e têm sido, crescentemente, relatados em casos de infecções sistêmicas ou disseminadas. A patogenicidade destes fungos oportunistas está na alta concentração dos microconídios no ar, facilitando a sua inalação. Infecções por Fusarium spp são altamente resistentes à terapia disponível, com prognostico desfavorável e taxa de mortalidade em torno de 57% dos casos. Vários relatos têm descrito a tolerância in vitro, ou resistência, de espécies de Aspergillus aos agentes antifúngicos após falha terapêutica com anfotericina B. A infecção por Aspergillus sp em pacientes imunossuprimidos apresenta taxa de mortalidade em torno de 86%, independente do tratamento antifúngico. Assim, testes de suscetibilidade a antifúngicos são de estrema importância. O teste de microdiluição, utilizando suspensão de conídios, foi recentemente padronizado pelo CLSI. No entanto, em regra, as infecções causadas por fungos filamentosos são caracterizadas pela presença de hifas no tecido infectado, sendo portanto, a realização do teste de suscetibilidade com hifas, de grande interesse clinico. A concentração inibitória mínima (CIM) de vários agentes antifúngicos pode ser determinada pela observação da inibição de crescimento de um hifa isolada. Há poucos relatos na literatura sobre a medição automatizada do crescimento de hifas de Aspergillus sp. e nenhum relato para hifas de Fusarium sp. pelo sistema 'BioCell-tracer POT. MARCA REGISTRADA¿... Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: Aspergillus and Fusarium species are hyaline moulds that are usually found in the soil and plants. These organisms have emerged as a cause of disseminated invasive disease. It has been suggested that airborne conidia might invade the respiratory tract with primary lung or sinus localisation Fusarium species are largely resistant to available chemotherapy and are correlated with poor prognosis and lethal outcome in 57% of the cases. Several reports have described in vitro tolerance or resistance of Aspergillus spp to antifungal infection in immunossupressed patients shows mortality around 86%, independente of antifungal treatment. Antifungal susceptibility testing of filamentous fungi has therefore become more importante. Since most infections caused by filamentous fungi are characterized by the presence of hyphal elements in the tissue, the monitoring of hyphal susceptibility might be of clinical interest. The MICs of several antifungal agents cam be determined based on the growth rate of a single hypha. There are only few reports for automatic growth evaluation for Aspergillus spp and no reports for Fusarium spp using the 'BioCell-tracer POT. MARCA REGISTRADA¿ system. In this work, we selected four clinical isolates of Aspergillus and four clinical isolates of Susarium. For all strains we prodeeded microdilution and hypha susceptibility antifungal evaluation with amphotericin B and itraconazole...Note: The complete abstract is available with the full electronic digital thesis or dissertations
Doutorado
Ciencias Biomedicas
Doutor em Ciências Médicas
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Books on the topic "Tracer test"

1

A, Davis J., and United States. Environmental Protection Agency. Office of Research and Development., eds. Multispecies reactive tracer test in a sand and gravel aquifer, Cape Cod, Massachusetts. Cincinnati, OH: National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 2001.

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1944-, Kelly George E., and National Institute of Standards and Technology (U.S.), eds. A method of test for tracer gas test of an outdoor furnace designed for installation without a flue pipe. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1998.

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Haggerty, Roy. Application of the multirate diffusion approach in tracer test studies at Äspö HRL: Final report. Stockholm: SKB, 1999.

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Frost, L. H. Excavation damage zone tracer experiment in the floor of the room 415 test tunnel. Pinawa, Man: Whiteshell Laboratories, 1997.

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Frost, L. H. Summary of the fracture zone 3 groundwater tracer test program at the underground research laboratory. Pinawa, Man: AECL, Whiteshell Laboratories, 1995.

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Graham, D. D. Methodology, results, and significance of an unsaturated-zone tracer test at an artificial-recharge facility, Tucson, Arizona. Tucson, Ariz: Dept. of the Interior, U.S. Geological Survey, 1989.

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S, Paybins Katherine, United Water Conservation District (Santa Paula, Calif.), and Geological Survey (U.S.), eds. Statistical analysis and mathematical modeling of a tracer test on the Santa Clara River, Ventura County, California. Sacramento, Calif: U.S. Dept. of the Interior, U.S. Geological Survey, 1998.

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D, Graham D. Methodology, results, and significance of an unsaturated-zone tracer test at an artificial-recharge facility, Tucson, Arizona. Tucson, Ariz: Dept. of the Interior, U.S. Geological Survey, 1989.

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1966-, Paybins Katherine S., United Water Conservation District (Santa Paula, Calif.), and Geological Survey (U.S.), eds. Statistical analysis and mathematical modeling of a tracer test on the Santa Clara River, Ventura County, California. Sacramento, Calif: U.S. Dept. of the Interior, U.S. Geological Survey, 1998.

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Erickson, J. R. Identification and characterization of hydrologic properties of fractured tuff using hydraulic and tracer tests--test well USW H-4, Yucca Mountain, Nye County, Nevada. Denver, Colo: U.S. Dept. of the Interior, Geological Survey, 1985.

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Book chapters on the topic "Tracer test"

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Rumynin, Vyacheslav G. "Models for Tracer Test Analysis and Interpretation." In Theory and Applications of Transport in Porous Media, 287–337. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1306-2_8.

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Bu, Tor, and Sigurd Ivar Aanonsen. "Simulation for Planning and Interpretation of a Single Well Surfactant and Tracer Test." In North Sea Oil and Gas Reservoirs — III, 277–88. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0896-6_24.

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Frippiat, Christophe, Benoît Wauters, Vincent Feller, Patrick Conde, Mohammed Talbaoui, and Alain Holeyman. "Physical and Numerical Modelling of a Two-Well Tracer Test at the Laboratory Scale." In Engineering Geology for Infrastructure Planning in Europe, 285–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-39918-6_33.

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Chan, T., F. W. Stanchell, R. M. Srivastava, N. W. Scheier, and M. R. Jensen. "Stochastic Flow and Transport Simulations of a Three-Dimensional Tracer Test in Moderately Fractured Plutonic Rock." In Quantitative Geology and Geostatistics, 205–16. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0810-5_18.

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Mariner, P. E., and D. R. Donohue. "Use of a partitioning interwell tracer test (PITT) to measure water saturation in the Vadose Zone." In Tailings and Mine Waste 2000, 253–58. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003078579-32.

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Pannone, Marilena, and Peter K. Kitanidis. "Large-Time Spatial Covariance of Concentration of Conservative Solute and Application to the Cape Cod Tracer Test." In Dispersion in Heterogeneous Geological Formations, 109–32. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-017-1278-1_6.

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Maliva, Robert G. "Tracer Tests." In Springer Hydrogeology, 403–43. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32137-0_13.

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Brasseau, Mark L., Q. Hu, N. T. Nelson, and R. Brent Cain. "A Diffusive Tracer-Test Method for Investigating the Influence of Mass Transfer Processes on Field-Scale Solute Transport." In ACS Symposium Series, 251–64. Washington, DC: American Chemical Society, 1999. http://dx.doi.org/10.1021/bk-1999-0725.ch018.

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Meus, Philippe, Jérémy Flament, Luc Willems, Luc Funcken, Gauthier Roba, Claire A. Chauveau, Jean Godissart, and Camille Ek. "Point Dilution Tracer Test to Assess Slow Groundwater Flow in an Auxiliary Karst System (Lake of Fontaine de Rivîre, Belgium)." In Advances in Karst Science, 173–82. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14015-1_20.

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Aichernig, Bernhard K., Klaus Hörmaier, Florian Lorber, Dejan Ničković, and Stefan Tiran. "Require, Test and Trace IT." In Formal Methods for Industrial Critical Systems, 113–27. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19458-5_8.

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Conference papers on the topic "Tracer test"

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Aydin, Hakki, Nirup Nagabandi, Diyar Jamal, and Cenk Temizel. "A Comprehensive Review of Tracer Test Applications in Geothermal Reservoirs." In SPE Western Regional Meeting. SPE, 2022. http://dx.doi.org/10.2118/209325-ms.

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Abstract Tracer test is a strong tool that is used to understand the connectivity between injection and production wells in geothermal reservoirs. It is essential to design and implement a tracer test for particular reservoir properties. Inappropriate tracer tests, might cuase wrong reservoir characterization interpretations. This study incorporates in the design, the implementation, and the interpretation of tracer tests in geothermal reservoirs. This study is populated with numerous field applications to ensure better understanding of the subject. The study initially present the types of tracers used in geothermal reservoirs. The appropriate tracer type is selected based on various parameters such as reservoir conditions, economics, type of measurement devices available, minimum detection concentration, environmentally friendly, and stability at reservoir conditions. Once the type of tracer is selected, the amount of tracer to be injected and the tracer sampling frequency are determined based on the distance between wells, mean traveling time, and the desired peak concentration. The tracer is injected as slug/continuous type to the selected injection wells and sampling from production wells. The measured tracer concentrations are then modeled with analytical methods such as the multi-fractures, single fracture, dual-porosity, and homogenous models. Naphthalene sulfonates, is frequently used in high-temperature geothermal reservoirs because of is high resistance and half-life in harsh conditions. Salts such as sodium chloride and potassium chloride are also conservative in harsh conditions; however, a large amount of salt is required to be injected to create an additional concentration in the reservoir brine, which already includes a certain salt concentration. Fluorescein is mostly applicable in low enthalpy reservoirs because of its weakness at high temperatures. Analytical models are matched with field data by using the nonlinear least square method. The most representative reservoir model is determined by evaluating the sum of the squared differences between tracer concentrations of the model and field data. Geothermal reservoirs are generally best matched with multi-fractures and dual-porosity models because of the secondary permeability and porosity of tectonic activities and mineral dissolution mechanisms. This study, provides a detailed information about tracer test design, implementation, and interpretation. It serves as a guidance by including numerous field cases and the latest research about tracers in geothermal.
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Chen, Hsieh, Sehoon Chang, Gawain Thomas, Wei Wang, Afnan Mashat, and Hussain Shateeb. "Comparison of Water and Gas Tracers Field Breakthrough." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205863-ms.

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Abstract We are developing new classes of barcoded advanced tracers, which, compared to present commercial offerings, can be optically detected in an automated fashion. The eventual goal for the advanced tracers is to deploy cost-effective, ubiquitous, long-term, and full-field tracer tests in supporting large-scale waterflooding optimization for improved oil recovery. In this paper, we compare model predictions to breakthrough data from two field tests of advanced tracers in a pilot during water alternating gas (WAG) cycles, where gas tracer tests have recently been performed as well. Two advanced tracer injections were performed at the test site. For the first injection, only a dipicolinic acid based advanced tracer (DPA) was injected. For the second injection, DPA and a phenanthroline- based advanced tracer, 4,7-bis(sulfonatophenyl)-1,10-phenanthroline-2,9-dicarboxylic acid (BSPPDA), was injected in conjunction with a commercially available fluorobenzoic acid-based tracer (FBA) to benchmark their performance. Produced water samples were collected weekly for tracer analysis. Both newly developed 2D-high performance liquid chromatography/time-resolved fluorescence optical detection method (2D-HPLC/TRF) and liquid chromatography-mass spectrometry (LC-MS) were used to construct the breakthrough curves for the advanced tracers. In parallel, gas chromatography-mass spectrometry (GC-MS) was used to detect FBA tracer. Gas tracer tests have been performed on the same field. Since DPA, BSPPDA and FBA tracers were water tracers as designed, they were expected to appear in between gas tracer breakthroughs, and we observed exactly that for BSPPDA and FBA. Unexpectedly, the DPA predominantly appeared along with gas tracer breakthroughs, suggesting its favorable compatibility with the gas phase. We suspect the presence of some gas components rendered the medium more acidic, which likely protonates DPA molecules, thereby alters its hydrophilicity. A wealth of information could be gathered from the field tests. First, all tracers survived not only the harsh reservoir conditions but also the irregular WAG injections. Their successful detection from the producers suggested robustness of these materials for reservoir applications. Second, the breakthrough curves of the BSPPDA tracers using optical detection method were very similar to those of FBA tracers detected by GC-MS, substantiating the competency of our in-house materials and detection methods to the present commercial offerings. Finally, even though DPA has passed prior lab tests as a good water tracer, its high solubility to gas phase warrants further investigation. This paper summarizes key results from two field trials of the novel barcoded advanced tracers, of which both the tracer materials and detection methods are new to the industry. Importantly, the two co- injected advanced tracers showed opposite correlations to the gas tracers, highlighting the complex physicochemical interactions in reservoir conditions. Nevertheless, the information collected from the field trials is invaluable in enabling further design and utilization of the advanced tracers in fulfilling their wonderful promises.
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Meza-Perez, Edgar Antonio, Francisco Garcia, Nancy Munoz Audemard, Carlos Reyes Lopez, and Arturo Amador-Ortega. "Optimization of Tracer Test Design—Practical Applications." In International Oil Conference and Exhibition in Mexico. Society of Petroleum Engineers, 2007. http://dx.doi.org/10.2118/108660-ms.

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Ferreira, L. E. A., F. J. Descant, Mojdeh Delshad, G. A. Pope, and Kamy Sepehrnoori. "A Single-Well Tracer Test To Estimate Wettability." In SPE/DOE Enhanced Oil Recovery Symposium. Society of Petroleum Engineers, 1992. http://dx.doi.org/10.2118/24136-ms.

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Isdawimah, Nuha Nadhiroh, A. Damar Aji, and Muhammad Rafi. "Solar Panel Characteristic Tracer for PV Test Solutions." In 2020 International Conference on Applied Science and Technology (iCAST). IEEE, 2020. http://dx.doi.org/10.1109/icast51016.2020.9557706.

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Ji, Bingyu, Xinguang Sui, Qinglin Wang, Qun Li, Liu Anjian, and Tongjing Liu. "Advance on the Tracer Test Technology Among Wells." In SPE Asia Pacific Oil and Gas Conference and Exhibition. Society of Petroleum Engineers, 2002. http://dx.doi.org/10.2118/77874-ms.

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Deans, H. A., and C. T. Carlisle. "Single-Well Tracer Test in Complex Pore Systems." In SPE Enhanced Oil Recovery Symposium. Society of Petroleum Engineers, 1986. http://dx.doi.org/10.2118/14886-ms.

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Al-Qasim, Abdulaziz, Sunil Kokal, Sven Hartvig, and Olaf Huseby. "Reservoir Description Insights from Inter-well Gas Tracer Test." In Abu Dhabi International Petroleum Exhibition & Conference. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/197967-ms.

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Sanni, Modiu L., Mohammed A. Al-Abbad, Sunil L. Kokal, Sven Hartvig, Huseby Olaf, and Kjersti Jevanord. "A Field Case Study of Inter-well Chemical Tracer Test." In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 2015. http://dx.doi.org/10.2118/173760-ms.

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Sanni, Modiu, Mohammad Abbad, Sunil Kokal, Razally Ali, Ibrahim Zefzafy, Sven Hartvig, and Olaf Huseby. "Reservoir Description Insights from an Inter-Well Chemical Tracer Test." In SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition. Society of Petroleum Engineers, 2017. http://dx.doi.org/10.2118/188060-ms.

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Reports on the topic "Tracer test"

1

Rohay, V. J. Tracer gas diffusion sampling test plan. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10190117.

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Ng, Lisa, Piljae Im, and Yeonjin Bae. Tracer gas test in Net-Zero Energy Residential Test Facility. Office of Scientific and Technical Information (OSTI), June 2020. http://dx.doi.org/10.2172/1648892.

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Sigman, M. E. Perfluoro(Methylcyclohexane) Tracer Tagging Test and Demonstration. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/814458.

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Vermeul, Vincent R., Brad G. Fritz, Jonathan S. Fruchter, William J. Greenwood, Timothy C. Johnson, Jacob A. Horner, Christopher E. Strickland, James E. Szecsody, and Mark D. Williams. 100-NR-2 Apatite Treatability Test: Fall 2010 Tracer Infiltration Test (White Paper). Office of Scientific and Technical Information (OSTI), April 2011. http://dx.doi.org/10.2172/1023204.

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Doughty, C., and G. S. Bodvarsson. Some design considerations for the proposed Dixie Valley tracer test. Office of Scientific and Technical Information (OSTI), June 1988. http://dx.doi.org/10.2172/6118274.

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Visser, A., M. Singleton, and B. Esser. Xenon Tracer Test at Woodland Aquifer Storage and Recovery Well. Office of Scientific and Technical Information (OSTI), March 2014. http://dx.doi.org/10.2172/1162248.

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Reimus, Paul William. What can we learn from previous tracer tests to optimize a colloid-facilitated transport test? Office of Scientific and Technical Information (OSTI), September 2018. http://dx.doi.org/10.2172/1468559.

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Mishra, S. On the use of pressure and tracer test data for reservoir description. Office of Scientific and Technical Information (OSTI), April 1989. http://dx.doi.org/10.2172/6434357.

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Pohll, G., and K. Pohlmann. Evaluation of the radionuclide tracer test conducted at the project Gnome Underground Nuclear Test Site, New Mexico. Office of Scientific and Technical Information (OSTI), August 1996. http://dx.doi.org/10.2172/459873.

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Silva, Mario, Tor Bjørnstad, and Sissel Opsahl Viig. Tracer-based interwell Sor-monitoring and evaluation of efficiency in EOR-methods. University of Stavanger, November 2021. http://dx.doi.org/10.31265/usps.207.

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A partitioning inter-well tracer test (PITT) determines the residual (or even remaining) oil saturation (SOR) in the flooded region between well-pairs. This type of tracer test can be used to identify improved oil recovery (IOR) targets, evaluate IOR projects, evaluate enhanced oil recovery (EOR) methods, and improve reservoir description for efficient hydrocarbon production. Thus, the main objective of the work with inter-well oil/water partitioning tracers developed within the framework of the IOR Centre is to provide tools and methodologies to improve reservoir description for efficient management of resources. The present report aims to provide insight to its users on the deployment of tracer technology in the inter- well region of water-flooded reservoirs to determine SOR. In turn, this parameter can be used as basis to evaluate the efficiency of several oil-production related operations. It will explain workflows, expertise, and tools needed as well as the importance of the information obtained, and methods to obtain it. This report is directed towards operators, primarily to reservoir engineers and reservoir managers, and service companies, particularly those already engaged on the deployment of tracer technology or those who aim to begin this activity. R&D personnel working in both operators and service companies may also benefit from the contents of the present report.
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