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Journal articles on the topic 'Schlumberger Limited'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 January 2023

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1

Perrin, José, Didier Belaud, Jean-Pierre Yver, and Charles Naville. "S-wave anisotropy from two dipole sonic data processing methods, confronted with fracture permeability, logs and cores." Science and Technology for Energy Transition 77 (2022): 13. http://dx.doi.org/10.2516/stet/2022006.

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The present paper consists in two parts, determined by the historical emerging production of Dipole Sonic Imager (DSI) measurements and results in the early 1990’s. The DSI data were processed following two methods simultaneously developed in France and in USA by Schlumberger. In the first part the early dipole sonic S-wave velocity results obtained in late 1993 are confronted with the other borehole data obtained in the scientific borehole MM-1, entirely cored and extensively logged, as part of the comprehensive scientific project named Géologie Profonde de la France (GPF), conducted by the B

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2

Asmoro, Cahyo Puji, and Hana Susanti. "Analysis of Do-it-Yourself (DIY) Electrode for Soil Resistivity Measurement Practical of Geology and Geophysics Subject at Earth and Outerspace Laboratory." Jurnal Temapela 3, no. 1 (2020): 10–18. http://dx.doi.org/10.25077/temapela.3.1.10-18.2020.

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This study describes the process of designing, manufacturing and the performance of Do It Yourself (DIY) electrodes for Soil Resitivity Measurement (SRM) practicum in the Geophysical Geology course. The aim is to produce electrodes that can be used with the Geo Tester tool from the Fluke 1623. The method used was the Research and Development method. the required electrode had been analyzed prior to the idea of making make your own electrode was created. The electrodes were designed in such a way as to consider the level of accuracy, convenience, safety and economics. The results showed that th

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Alzahra, Salsa Rizkia, Didik Taryana, and Ferryati Masitoh. "Identifikasi lapisan akuifer Kawasan Dataran Suko Mulyo, Desa Suko Mulyo, Kecamatan Sepaku, Kabupaten Penajam Paser Utara, Kalimantan Timur." Jurnal Integrasi dan Harmoni Inovatif Ilmu-Ilmu Sosial (JIHI3S) 1, no. 11 (2021): 1239–56. http://dx.doi.org/10.17977/um063v1i11p1239-1256.

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The Suko Mulyo Plain area, Sepaku, North Penajam Paser is experiencing problems with uneven groundwater availability and limited groundwater supply for clean water sources. The purpose of the study was to determine the condition of rock layers based on resistivity values and identify the presence of aquifers. The method used is a configuration geoelectric survey schlumberger 200 meters 5 location points which is then processed with IPI2Win. IPI2Win serves to visualize the modeling of the aquifer layer. Geoelectric modeling results show that the hydrostratigraphy of the Suko Mulyo Plain Area

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4

Tonge, Piers. "Exploiting the industry skills shortage as a competitive advantage." APPEA Journal 50, no. 2 (2010): 715. http://dx.doi.org/10.1071/aj09079.

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Developing skilled petro-technical professionals (PTPs) has the greatest lead-time of any activity that oil and gas companies undertake today. Australia could double its gas production by 2020, which would create 50,000 new jobs. This will intensify competition for skilled petrotechnical professionals, and may drive up people costs. The market for PTPs in Australia is tight today, with active competition for technical talent between the oil and gas industry and other extractive industries. Conventional and unconventional oil and gas projects on Australia’s west and east coasts are already chas

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Boeije, C. S., and W. R. Rossen. "Fitting Foam-Simulation-Model Parameters to Data: I. Coinjection of Gas and Liquid." SPE Reservoir Evaluation & Engineering 18, no. 02 (2015): 264–72. http://dx.doi.org/10.2118/174544-pa.

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Summary Cheng et al. (2000) present a simple method to fit foam-simulation parameters without oil to data for pressure gradient as a function of superficial velocities of gas and liquid. The key in this process is the identification of “high-quality” (high gas fraction) and “low-quality” foam regimes. The method is essentially the same for the foam-model parameters in foam models in STARS (Cheng et al. 2000), UTCHEM (Cheng et al. 2000), or ECLIPSE (Schlumberger 2010). Often, however, available data are more limited: pressure gradient for one scan of foam quality at fixed total superficial velo

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Al-Khersan, Emad. "Integrated Ground Penetrating Radar and Electrical Resistivity Study to Explore Such Basrah Low Resistivity Soils for Engineering Purposes, Southern Iraq." Iraqi Geological Journal 54, no. 2E (2021): 104–21. http://dx.doi.org/10.46717/igj.54.2e.7ms-2021-11-23.

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A total of 45 ground penetrating radar profiles have been conducted in Basrah City, Southern Iraq, to detect buried utilities in such soils which have not been tested before. This study tries to explore how much this technique can be useful for Basrah low resistivity soils during arid and humid seasons. In Basrah University Campus (silty clay soil) and Basrah Sport City (silty sand soil), 37 and 8 ground penetrating radar profiles were achieved inside these locations respectively. Vertical electrical sounding (Schlumberger array) and electrical profiling (Wenner array) were also used in compat

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7

Dlugosch, Raphael, Thomas Günther, Mike Müller-Petke, and Ugur Yaramanci. "Improved prediction of hydraulic conductivity for coarse-grained, unconsolidated material from nuclear magnetic resonance." GEOPHYSICS 78, no. 4 (2013): EN55—EN64. http://dx.doi.org/10.1190/geo2012-0187.1.

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The prediction of hydraulic conductivity [Formula: see text] from nuclear magnetic resonance (NMR) measurements has been performed primarily in sandstones. In hydrogeological applications, however, unconsolidated material is more prevalent. Compared to sandstones, unconsolidated sediments can show pore sizes up to several millimeters. The known (semi-)empiric relations to estimate [Formula: see text] from NMR have been applied on this material, but the underlying assumptions are not valid for large pores. We formulated a new model, called the Kozeny-Godefroy model. It is based on capillary por

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8

Stoll, Johannes B., and Karsten Bahr. "Optimization of signal‐to‐noise ratio in dc soundings." GEOPHYSICS 65, no. 5 (2000): 1495–500. http://dx.doi.org/10.1190/1.1444838.

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Geoelectric (dc) sounding methods are usually limited to electrode spacings smaller than 1 km, which restrict the depth of investigation to only several hundreds of meters. Greater depths of investigation require both a larger electrode spacing and motor‐generator driven transmitters. In order to increase the depth of investigation into the middle crust, the distance between transmitter and receiver dipole must be increased up to 100 km as well. Instead of a Schlumberger electrode configuration, we use a dipole‐dipole electrode arrangement, which avoids cable connections of several tens of kil

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9

Carpenter, Chris. "Water-Based Drilling Fluid Helps Control Extreme Conditions in Gas Shale Play." Journal of Petroleum Technology 74, no. 11 (2022): 62–64. http://dx.doi.org/10.2118/1122-0062-jpt.

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_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper URTeC 208307, “A Water-Based Drilling Fluid for Controlling Deep-Reservoir Extreme Conditions in an Abu Dhabi Gas Shale Play,” by Gabe Manescu, SPE, Schlumberger; Balazs Veer, SPE, TotalEnergies; and Panamarathupalayam Balakrishnan, SPE, Schlumberger, et al. The paper has not been peer reviewed. _ A combination of teamwork and fluids technology proved to be the formula for successfully drilling in high-pressure/high-temperature (HP/HT) conditions for an onshore UAE shale gas play. The success achieve

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Yusuf, Solomon Nehemiah, Hilnan Christopher Drenkat, and Charity Mamza Azi. "Groundwater Exploration Using Vertical Electrical Sounding And 2D Electrical Resistivity Tomography In Shale Formation: A Case Study Of Sabongida, Plateau State, North Central Nigeria." Warta Geologi 48, no. 1 (2022): 10–22. http://dx.doi.org/10.7186/wg481202202.

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Sabongida is characterized by lots of abortive boreholes which are often shallow as a result of the complex nature of shale formation in the area and limited application of integrated geophysical techniques before drilling of boreholes. The presence of shale formation in the area makes it extremely difficult to drill productive boreholes, while the existing hand dug wells are always shallow due to the difficulty in digging deeper wells, this and other factors motivated the choice of the study location for the purpose of proffering solutions to solve the perennial water problem in the area. Twe

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11

Özcan, Ercan, Ali Osman Yücel, Sımon F. Mıtchell, et al. "New Records of Caudriella Haman and Huddleston from the Middle and Late Eocene of Neo-Tethys: Taxonomic and Palaeobiogeographic Implications." Journal of Foraminiferal Research 52, no. 1 (2022): 21–39. http://dx.doi.org/10.2113/gsjfr.52.1.21.

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ABSTRACT The middle to upper Eocene mixed carbonate-clastic and siliciclastic deposits of the Şevketiye and Keşan formations in northwest Turkey yielded unique assemblages of larger benthic foraminifera, some displaying a typical orbitoidiform test, not comparable to any known taxa in the Palaeogene of the Neo-Tethys. These specimens with a flat, discoidal test, occasionally with an indistinct central depression, possess a central layer of equatorial chambers/chamberlets displaying a cyclical (orbitoidal) growth pattern and thick lateral layers with numerous chamberlets. The megalospheric embr

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12

Shen, L. C., W. C. Savre, J. M. Price, and K. Athavale. "Dielectric properties of reservoir rocks at ultra‐high frequencies." GEOPHYSICS 50, no. 4 (1985): 692–704. http://dx.doi.org/10.1190/1.1441944.

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Conventional resistivity and induction tools measure the electrical conductivity of the formation. Interpretation of these logs is difficult in situations where the formation water resistivity is variable or unknown as a result, for example, of water, steam, or chemical flooding. Recent introduction of several dielectric tools offers a new technique in well logging. These sondes measure the relative dielectric permittivity of the formation at very‐high and ultra‐high radio frequencies. Because water has a much higher relative dielectric permittivity (about 80) than oil (about 2) or gas (about

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Woobaidullah, ASM, M. Moklesur Rahman, and M. Zohir Uddin. "Evaluation of hydrogeological conditions through vertical electrical soundings survey at Mankiganj pourashava, Manikganj, central part of Bangladesh." Bangladesh Journal of Scientific Research 27, no. 2 (2016): 109–20. http://dx.doi.org/10.3329/bjsr.v27i2.26229.

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The Pourashava area of Manikganj, located in the central part of Bangladesh is treated as arsenic hotspot in the country as the outcome of various studies concludes that almost 80% of the domestic tube wells at this area exceed arsenic level of Bangladesh standard (50 ?g/l) for drinking water. To enhance the potable water supply in the area, 15 geoelectric soundings survey using Schlumberger configuration with spreading AB/2 = 300 meters has been executed to decipher the subsurface lithology distribution and aquifers at different depths, to determine the lateral and vertical extent of aquifer

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Woobaidullah, A. S. M., and Mohammad Zohir Uddin. "Geoelectric resistivity sounding for deciphering hydrogeology and locating deep tubewell installation sites in Puroshava area of Bagerhat, Bangladesh." Journal of Nepal Geological Society 42 (September 24, 2011): 107–16. http://dx.doi.org/10.3126/jngs.v42i0.31458.

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The study area includes Bagerhat Pouroshava and its surroundings under Bagerhat Sadar Upazila covering an area of 7.53 sq. km with a population of about 50,000. Bagerhat is a coastal district and the subsurface geology is complicated. As in other areas of the coastal belt the quality of ground water in the area is also variable. For ground water development in the study area the shallow aquifer is not suitable as the water is mostly saline to brackish except some isolated fresh water pockets of limited yielding capacity. The deep aquifer is also not very homogeneous in water quality. In the no

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15

Poddar, M., and Walter L. Anderson. "Transient electromagnetic modeling of shallow A‐type sections with 3-D inhomogeneities." GEOPHYSICS 57, no. 6 (1992): 774–80. http://dx.doi.org/10.1190/1.1443291.

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A hard rock area underlain by granitic/gneissic or basaltic rocks often has an A‐type three‐layer geoelectric section in which resistivity increases with depth. The middle layer of moderate resistivity caused by fracturing/fissuring that lies between the surface‐weathered layer and the substratum of unfractured rock is not a good target for a direct current (DC) resistivity sounding since it is generally suppressed in the observations. Moreover, its definition requires expanding the electrode spacing to a length several times the depth of the target layer, and this may be a drawback if the tar

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16

Han, Choongyong, Mojdeh Delshad, Kamy Sepehrnoori, and Gary Arnold Pope. "A Fully Implicit, Parallel, Compositional Chemical Flooding Simulator." SPE Journal 12, no. 03 (2007): 322–38. http://dx.doi.org/10.2118/97217-pa.

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Summary A fully implicit, parallel, compositional reservoir simulator has been developed that includes both a cubic equation of state model for the hydrocarbon phase behavior and Hand's rule for the surfactant/oil/brine phase behavior. The aqueous species in the chemical model include surfactant, polymer, and salt. The physical property models include surfactant/oil/brine phase behavior, interfacial tension, viscosity, adsorption, and relative permeability as a function of trapping number. The fully implicit simulation results were validated by comparison with results from our IMPEC chemical f

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17

Leytur, Matías, Esteban Gandolfo, Danilo Carnelos, Ernesto Giardina, and Adalberto Di Benedetto. "Biomass accumulation of Schlumbergera truncata (Haw.) Moran (Thanksgiving cactus) grown under high pot density." Journal of the Professional Association for Cactus Development 23 (September 17, 2021): 121–33. http://dx.doi.org/10.56890/jpacd.v23i.331.

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The growth of most pot-grown succulents offered by the ornamental industry is limited mainly by water, nutrients, photoperiod, and temperature manipulation, while other decisions, such as: plant density at pot cropping are often based on the grower’s experience. In the present study, to optimize the biomass accumulation of Schlumbergera truncata under high pot density, we performed an experimental design that included different numbers of initials phylloclades and spraying or not with the synthetic cytokinin 6-benzylaminopurine (BAP). The highest biomass accumulation on a fresh weight basis an

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18

Carpenter, Chris. "Machine Learning Aids Early Detection of Stuck Pipe in Extended-Reach Wells." Journal of Petroleum Technology 74, no. 05 (2022): 82–84. http://dx.doi.org/10.2118/0522-0082-jpt.

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This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 206516, “Stuck-Pipe Early Detection in Extended-Reach Wells Using Ensemble Method of Machine Learning,” by Rushad Ravilievich Rakhimov, SPE, Schlumberger, and Oleg Valerievich Zhdaneev, SPE, and Konstantin Nikolaevich Frolov, SPE, Ministry of Energy of the Russian Federation, et al. The paper has not been peer reviewed. The objective of this paper is to describe the experience of using a machine-learning model prepared by the ensemble method to prevent stuck-pipe events during construction of exten

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Soller, André, Patrícia Soffiatti, Alice Calvente, and Renato Goldenberg. "Cactaceae no estado do Paraná, Brasil." Rodriguésia 65, no. 1 (2014): 201–19. http://dx.doi.org/10.1590/s2175-78602014000100014.

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Este trabalho apresenta o estudo taxonômico de Cactaceae no estado do Paraná. A metodologia inclui a análise de coleções de herbário e realização de coletas em todos os biomas do estado. Doze gêneros e 26 espécies nativas foram inventariados para o estado. Os gêneros mais ricos são Rhipsalis, representado por 11 espécies, Lepismium (4) e Schlumbergera (2). Os outros nove gêneros estão representados por apenas uma espécie cada: Brasiliopuntia brasiliensis, Cereus hildmannianus, Epiphyllum phyllanthus, Hatiora salicornioides, Hylocereus setaceus, Opuntia monacantha, Parodia carambeiensis, Peresk

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Hunter, Aaron W., and Neil D. L. Clark. "The palaeoecology of two Scottish encrinites: Jurassic crinoid assemblages from the Trotternish Peninsula, Isle of Skye, Scotland." Scottish Journal of Geology 45, no. 2 (2009): 169–76. http://dx.doi.org/10.1144/0036-9276/01-366.

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SynopsisDespite a long history of investigation, articulate crinoids from the Jurassic of Scotland have not received great attention compared to their counterparts in Southern England or continental Europe; this is thought to be largely due to poor preservation. Two examples of ‘local’ encrinites (rocks almost entirely composed of crinoids debris), one from the Pliensbachian and the other from the Aalenian/Bajocian from the Isle of Skye, are shown to consist of columnals of Hispidocrinus cf. schlumbergeri and Balanocrinus donovani respectively. They represent local encrinites that have been de

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Ramirez, Dario, and Harvey J. Lang. "Effect of Iron Concentration on Growth and Phylloclade Edge Yellowing of Holiday Cactus." HortScience 30, no. 4 (1995): 866B—866. http://dx.doi.org/10.21273/hortsci.30.4.866b.

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Production of holiday cactus has been limited by the common occurrence of marginal chlorosis of the phylloclades, which can lead to losses in crop quality. This work was conducted to determine if poor growth and phylloclade yellowing could be correlated to applied Fe concentration. Rooted cuttings of Schlumbergera truncata `White Christmas', `Twilight Tangerine', 'Christmas Charm', and `Lavender Doll' were transplanted into a modified Hoagland's solution, adjusted to a pH of 6.3, containing Fe-EDTA at either 0,10,20,30, or 40 mg·liter–1 Fe. Plants were grown in a controlled environmental chamb

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Carvalho, João Da Silva, Javier Tomasella, Shozo Shiraiwa, and Rutenio Luiz Castro de Araujo. "STRATIGRAPHIC ASPECTS OF THE ALTER DO CHÃO FORMATION IN THE NORTHERN REGION OF MANAUS, BASED ON GEOELECTRIC INFORMATION." Revista Brasileira de Geofísica 32, no. 1 (2014): 61. http://dx.doi.org/10.22564/rbgf.v32i1.397.

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ABSTRACT. The geoelectrical survey was conducted in a portion of the northern edge of the Amazon Sedimentary Basin, between the kilometer 38 and the kilometer 96 of the BR-174 highway, dominated by sediments of the Alter do Chão Formation. We performed eight vertical electrical soundings (Schlumberger) and an electrical imaging section (dipole-dipole), using a portable resistivity (Syscal R2). The field data were processed using IPI2Win and RES2DINV softwares, resulting in the development of profiles and sections of electrical resistivity, which allowed the identification of lithologies and st

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23

Lima, Olivar Antônio Lima de. "GEOPHYSICAL CHARACTERIZATION OF AQUIFERS IN THE SALITRE RIVER BASIN, BAHIA STATE, BRAZIL, USING RESISTIVITY SOUNDINGS AND ELECTRICAL TOMOGRAPHIES." Revista Brasileira de Geofísica 32, no. 4 (2014): 637. http://dx.doi.org/10.22564/rbgf.v32i4.552.

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ABSTRACT. The Salitre River basin, which is located in the semi-arid land of northeastern Brazil, is annually faced with severe surface-water scarcity. Twomain aquifersystems, which are distributed in depth, can be exploited to supply the water needs of the population and its present agro-industrial development: (i) a fractured-karst,water-table component, totally developed within the upper carbonate sequence of the Salitre Formation; and (ii) a fractured-clastic, semi-confined component, mostlikely associating lower Salitre limestones with the meta-sandstones of the Morro do Chap´eu Formation

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Santosa, Langgeng Wahyu, and Tjahyo Nugroho Adji. "The Investigation of Groundwater Potential by Vertical Electrical Sounding (VES) Approach in Arguni Bay Region, Kaimana Regency, West Papua." Forum Geografi 21, no. 1 (2016). http://dx.doi.org/10.23917/forgeo.v21i1.1820.

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This research was conducted within some villages in the surrounding area that administratively including Arguni Bay District, Kaimana Regency, West Papua. The main objective of this study is to vertically measure resistivity value of aquifer with the intention of recognizing deep groundwater potency as a source of native’s domestic needs. In addition, VES method by Schlumberger electrode array was applied within 18 locations, which expectantly represent the whole area of research. The resistivity data is then interpreted by IP2Win 2.1 Geoelectric Software to entirely describe the aquifer syste

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Tadeu Carvalho do Nascimento, Carlos, José Vicente Elias Bernardi, Andreia De Almeida, João Cândido Magalhães, and Paulo Milton Barbosa Landim. "GEOELECTRICAL MODEL FOR AQUIFER IN THE BONITA LAKE REGION, PLANALTINA, DISTRITO FEDERAL, BRAZIL." Revista Brasileira de Geofísica 35, no. 1 (2017). http://dx.doi.org/10.22564/rbgf.v35i1.767.

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ABSTRACT. The aim of this study was to analyze the soil geoelectric behavior, through geophysical surveys, in the surrounding region to Bonita Lake, a natural reservoir located in the Ecological Station águas Emendadas (ESECAE), 50 kilometers from Brasília (Brazil). Sixteen vertical electrical sounding (VES) were performed with Schlumberger array. The geoelectrical model, obtained by inversion of the field data and statistical analysis of the inverted data, indicated structure with superficial dry soil above partially saturated layer, and finally a soil or rock with low permeability, related t

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26

Afuekwe, Austin, and Kelani Bello. "Use of Smart Controls in Intelligent Well Completion to Optimize Oil & Gas Recovery." Journal of Engineering Research and Reports, June 10, 2019, 1–14. http://dx.doi.org/10.9734/jerr/2019/v5i416930.

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For the past few years, the oil and gas industry has faced several economic, geographic and technical challenges largely due to decline in crude oil prices and market volatility. In the quest to address some of these challenges to accelerate production and subsequently maximize ultimate recovery, operators are limited to remote hydraulic and electro-hydraulic monitoring and control of safety valves providing the means of obtaining downhole production data which demands periodic well intervention-based techniques with risk of loss of associated tools. This has highlighted the need for com

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Jekayinfa, Solomon M., Michael A. Oladunjoye, and Kennedy O. Doro. "Imaging the distribution of bitumen contaminants in shallow coastal plain sands in southwestern Nigeria using electrical resistivity." Environmental Earth Sciences 82, no. 2 (2023). http://dx.doi.org/10.1007/s12665-022-10718-w.

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AbstractNaturally occurring bitumen seeps migrating within the shallow subsurface contaminates soil and groundwater in communities within the eastern segment of the Dahomey Basin in southwestern Nigeria. Managing these contaminations require an understanding of the distribution of the bitumen seeps to isolate contaminated regions to avoid farming activities or drilling shallow drinking water wells within them. Several studies have assessed the shallow occurrence of bitumen in the region, focusing on their economic potentials but ignores the challenges with soil and groundwater contamination in

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Moradi, Ali, and Britt M. E. Moldestad. "A Proposed Method for Simulation of Rate-Controlled Production Valves for Reduced Water Cut." SPE Production & Operations, April 1, 2021, 1–16. http://dx.doi.org/10.2118/205377-pa.

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SummaryIn recent years, the advancement of horizontal-well technology has played a major role in making oil production economically feasible from many reservoirs. One of the major problems that can reduce the efficiency of using horizontal wells is gas and water coning caused by the heel-toe effect and heterogeneity along the well. To tackle this problem, Equinor’s autonomous inflow-control device (ICD) (AICD), known as rate-controlled production (RCP) valves, is widely used today. RCP valves can effectively delay the early water breakthrough and partially choke back water autonomously after w

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Ibuot, J., G. Akpabio, and N. George. "A survey of the repository of groundwater potential and distribution using geoelectrical resistivity method in Itu Local Government Area (L.G.A), Akwa Ibom State, southern Nigeria." Open Geosciences 5, no. 4 (2013). http://dx.doi.org/10.2478/s13533-012-0152-5.

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AbstractVertical electrical sounding (VES), employing a Schlumberger electrode configuration, was used to investigate the sediments and aquifer repositories in Itu Local Government Area of Akwa Ibom state, southern Nigeria. This was done in sixteen (16) locations/communities with the maximum current electrode spread ranging between 800–1000m. The field data were interpreted using forward and iterative least square inversion modeling, which gives a resolution with 3–5 geoelectric layers. The observed frequencies in curve types include 31.25% of AKH, 18.8% of AAK and HK and 6.25% of K, QHK, AKH,

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Agyemang, Victor Ofori. "Geophysical investigation of groundwater potential and aquifer protective capability in selected communities within Cape Coast municipality, Ghana." Applied Water Science 12, no. 2 (2022). http://dx.doi.org/10.1007/s13201-021-01558-3.

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AbstractApplication of VES geophysical technique to investigate the groundwater potential and the aquifer protective capability has been carried at Cape Coast Municipality, Ghana. The geology of Cape Coast is mainly made of the Secondian formation and the Eburnean Plutonic Suite. Twenty (20) VES points were selected after the profiling, and Schlumberger array was applied for the conduction of the VES. The PASI Resistivity Terrameter was used, and the maximum current electrode spacing (AB/2) was 100 m. Partial curve matching technique and computer iteration technique were applied in the interpr

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