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Articoli di riviste sul tema "Reservoirs"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Lubkov, M. "Optimal installation of horizontal wells in the low-permeable anisotropic oil reservoirs." Collection of Research Papers of the National Mining University 78 (September 2024): 236–46. https://doi.org/10.33271/crpnmu/78.236.

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Purpose. Investigation of the optimal placement of horizontal wells in the low-permeable anisotropic oil reservoirs to increase oil production. The method of investigation. Thenumerical modeling of pressure distribution around a horizontal wells in the low-permeable anisotropic oil reservoirs is carried out using a combined finite-element-difference method. Results. Analysis of the obtained results shows for effective using of anisotropic hard reaching oil reservoirs, it is necessary to place horizontal production wells in the areas with relatively low anisotropy of the reservoir permeability,

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2

Khaydarov, Aziz, Tursunoy Apakxujayeva, and Dinislam Atakulov. "Influence of geographical location on reservoir vegetation formation." E3S Web of Conferences 401 (2023): 01013. http://dx.doi.org/10.1051/e3sconf/202340101013.

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The paper provides information on the vegetation cover area on the reservoir bottom. In the growing shortage of water resources, one of the important tasks is to improve methods for estimating reservoir volume. The vegetation cover of reservoirs influences the quality of the water supply. While the bottom of some reservoirs is drained, this bottom is covered with vegetation, but this trend is not observed in all reservoirs. The Talimarjan and Charvak reservoirs were selected as study sites. As a method, spatial data were selected that were collected using GIS. The results have shown that when

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3

Iqbal, Khairul, Moh Abduh, and ,. Variadi. "Simulation of Multi Reservoir Operation Rules with Interconnected Tunnel and Water Transfer." Aceh International Journal of Science and Technology 12, no. 2 (2023): 285–96. http://dx.doi.org/10.13170/aijst.12.2.32532.

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The multi-reservoir operation rules require accuracy in developing its technical parameters. This is done to prevent operational failure in one of the reservoirs. The water transfer concept is to manage the water resources distribution between the receiving watershed and the donor watershed. The availability of transferable water must be prioritized, meeting the water demand of the donor reservoir. Storage capacity in both reservoirs aims to meet water demand, especially in the recipient. The elevation of the interconnecting tunnel is the minimum limit for water use in simulation. The intercon

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4

Fitriana, Indri Rahmandhani, Djoko Legono, and Heriantono Waluyadi. "Reservoir sedimentation regime analysis: case study of Kedungombo reservoir and Sermo reservoir." MEDIA KOMUNIKASI TEKNIK SIPIL 27, no. 1 (2021): 80–87. http://dx.doi.org/10.14710/mkts.v27i1.35978.

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The Kedungombo and the Sermo Reservoirs have problems in fulfilling basic services because of sedimentation. Sedimentation that occurs in each of the reservoirs would form a specific reservoir sedimentation pattern that is supposed to be similar because the hydrology and physiography conditions of the reservoir's catchment area are similar. This study aims to determine the dynamics of sedimentation patterns that occur in the dead storage for reviewing the characteristics/sedimentation regime of the two reservoirs. The analysis was carried out by processing bathymetrical data which were process

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5

Li, Shuangshuang, Junli Li, Weibing Du, Shuaiqi Liu, Haoyu Wang, and Jingyu Jin. "Combining Satellite Images and the Hydraulic Engineering Archive to Map the Processes of Reservoir Construction in Xinjiang." Remote Sensing 16, no. 2 (2024): 328. http://dx.doi.org/10.3390/rs16020328.

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Reservoirs are essential hydraulic facilities for water resource allocation in Xinjiang. Since the 1950s, many reservoirs have been constructed for oasis water resource utilization in Xinjiang, enhancing the storage capacity of water resources. There are a few intact and open reservoir archives containing both geolocations and hydraulic attributes, such as the reservoir completion year, which can facilitate our understanding of the correlation between hydraulic engineering and oasis expansion. This paper mapped all the reservoirs of Xinjiang using Sentinel-2 MSI images from 2022. It associated

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6

Valluri, Manoj Kumar, Jimin Zhou, Srikanta Mishra, and Kishore Mohanty. "CO2 Injection and Enhanced Oil Recovery in Ohio Oil Reservoirs—An Experimental Approach to Process Understanding." Energies 13, no. 23 (2020): 6215. http://dx.doi.org/10.3390/en13236215.

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Process understanding of CO2 injection into a reservoir is a crucial step for planning a CO2 injection operation. CO2 injection was investigated for Ohio oil reservoirs which have access to abundant CO2 from local coal-fired power plants and industrial facilities. In a first of its kind study in Ohio, lab-scale core characterization and flooding experiments were conducted on two of Ohio’s most prolific oil and gas reservoirs—the Copper Ridge dolomite and Clinton sandstone. Reservoir properties such as porosity, permeability, capillary pressure, and oil–water relative permeability were measured

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7

Zhou, Tianqi, Hongqi Yuan, Fengming Xu, and Rigen Wu. "Tight Sandstone Reservoir Characteristics and Controlling Factors: Outcrops of the Shanxi Formation, Liujiang River Basin, North China." Energies 16, no. 10 (2023): 4127. http://dx.doi.org/10.3390/en16104127.

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Tight sandstone reservoirs are of interest due to their potentially favorable prospects for hydrocarbon exploration. A better understanding of tight sandstone outcrop reservoir characteristics and their influencing factors is thus needed. By laboratory observation, thin section analysis, and experimental analysis, the current work carried out a detailed investigation of densely sampled tight sandstone outcrops of the Shanxi Formation in the Liujiang River Basin, paving the way for further research on rock types, reservoir spatial distribution, physical properties, and their key controlling fac

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8

Li, Shilin. "Research on Fractures in Hydraulic Fracturing Reservoirs." Academic Journal of Science and Technology 15, no. 2 (2025): 101–5. https://doi.org/10.54097/mahpw233.

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Hydraulic fracturing is an important technology for unconventional natural gas extraction. It generates volume opening in the reservoir by injecting a fluid volume exceeding the reservoir's pore elasticity, thus opening up migration channels for free gas. The fracturing effect is significantly influenced by the distribution of natural fractures and fissures in the reservoir. Natural fractures are crack systems formed in rocks under natural conditions and are widely present in unconventional reservoirs such as shale, tight sandstone, and coal seams. During the hydraulic fracturing process, they

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9

LIU, YANFENG, YUETIAN LIU, LU SUN, and JIAN LIU. "MULTISCALE FRACTAL CHARACTERIZATION OF HIERARCHICAL HETEROGENEITY IN SANDSTONE RESERVOIRS." Fractals 24, no. 03 (2016): 1650032. http://dx.doi.org/10.1142/s0218348x16500328.

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Heterogeneities affecting reservoirs often develop at different scales. Previous studies have described these heterogeneities using different parameters depending on their size, and there is no one comprehensive method of reservoir evaluation that considers every scale. This paper introduces a multiscale fractal approach to quantify consistently the hierarchical heterogeneities of sandstone reservoirs. Materials taken from typical depositional pattern and aerial photography are used to represent three main types of sandstone reservoir: turbidite, braided, and meandering river system. Subsequen

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10

Jin, Jiaxu, Hongyue Zhang, Liang Xu, Kelin Zhou, and Xiangfeng Lv. "Stability Analysis of Downstream Dam Expansion Tailings Pond." Advances in Civil Engineering 2022 (June 2, 2022): 1–13. http://dx.doi.org/10.1155/2022/1809736.

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The buildup of tailings in China has expanded dramatically with economic development and industrial demand, and the safety of tailings reservoirs has become increasingly serious. Due to the difficulty in finding a new reservoir site, the expansion approach of building a new tailings dam downstream of the original reservoir area was investigated. The stability of the tailings reservoir after expansion was calculated using the traditional dynamic and static stability solution method and taking into account the unpredictability of dam construction materials and tailings material parameters in the

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11

Su, Chang, Gang Zhao, Yee-Chung Jin, and Wanju Yuan. "Semi-Analytical Modeling of Geological Features Based Heterogeneous Reservoirs Using the Boundary Element Method." Minerals 12, no. 6 (2022): 663. http://dx.doi.org/10.3390/min12060663.

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The objective of this work is to innovatively apply the boundary element method (BEM) as a general modeling strategy to deal with complicated reservoir modeling problems, especially those related to reservoir heterogeneity and fracture systems, which are common challenges encountered in the practice of reservoir engineering. The transient flow behaviors of reservoirs containing multi-scale heterogeneities enclosed by arbitrarily shaped boundaries are modeled by applying BEM. We demonstrate that a BEM-based simulation strategy is capable of modeling complex heterogeneous reservoirs with robust

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12

Chang, S. P., and S. M. Chuang. "Eutrophication study of twenty reservoirs in Taiwan." Water Science and Technology 44, no. 6 (2001): 19–26. http://dx.doi.org/10.2166/wst.2001.0331.

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Taiwan is an island off the southeastern coast of China with total area of roughly 36,000 km2. The geographic position of Taiwan is between 21° 45′ 25″ to 25° 56′ 31″ north latitude and 119° 18′ 3″ to 124° 34′ 30″ east longitude and includes both tropical and subtropical areas. The study was carried out at twenty main reservoirs in Taiwan area from 1994 to 1998. The study revealed that the water quality of most reservoirs gradually deteriorated during the study period. Total phosphorus concentrations over 60 μg/L were observed in 12.5% of these reservoirs in 1994, but in 22.2% of these reservo

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13

Van Den Hoek, Jamon, Augusto Getirana, Hahn Jung, Modurodoluwa Okeowo, and Hyongki Lee. "Monitoring Reservoir Drought Dynamics with Landsat and Radar/Lidar Altimetry Time Series in Persistently Cloudy Eastern Brazil." Remote Sensing 11, no. 7 (2019): 827. http://dx.doi.org/10.3390/rs11070827.

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Tropical reservoirs are critical infrastructure for managing drinking and irrigation water and generating hydroelectric power. However, long-term spaceborne monitoring of reservoir storage is challenged by data scarcity from near-persistent cloud cover and drought, which may reduce volumes below those in the observational record. In evaluating our ability to accurately monitor long-term reservoir volume dynamics using spaceborne data and overcome such observational challenges, we integrated optical, lidar, and radar time series to estimate reservoir volume dynamics across 13 reservoirs in east

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14

Xoshimov, S. N., T. U. Apakhodjaeva, D. Matkaziyev, K. M. Kurbanov, and Sh Jetpisbayeva. "Evaluation of sedimentation processes in riverbank water reservoir." IOP Conference Series: Earth and Environmental Science 1390, no. 1 (2024): 012030. http://dx.doi.org/10.1088/1755-1315/1390/1/012030.

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Abstract Reservoirs are vital for human development, aiding agriculture, energy, industry, and the economy. This study delves into the pressing issue of muddy flooding in reservoirs. Field experiments aimed to identify sedimentation causes in the Chartak reservoir and assess its volume efficiency. Utilizing mathematical and statistical methods alongside river surveyor tools, sediment processes were analyzed. Findings reveal a loss of 9.08 million.m3 in Chartak Reservoir due to sedimentation, impacting efficiency and water balance. Maximum sedimentation influx from natural flow was 0.6 kg/m3, a

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15

Wang, Dong, Jin Yun Deng, Yi Tian Li, and Juan Juan Fang. "Study on the Impounding Process Optimization of Cascade Reservoirs in Upper Changjiang River." Applied Mechanics and Materials 353-356 (August 2013): 2520–26. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2520.

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Overlapping storage periods of the cascade reservoirs would lead to the unreasonable using of the water resources, and each reservoir in the cascade might not be filled, that would influence the comprehensive benefit of the cascade reservoirs. In this paper, the Runoff regulation model of the cascade reservoirs is established and verified, the flood regulating calculation of the Xiluodu-Xiangjiaba-Three Gorges cascade reservoirs is done, and based on the flood regulating calculation, the earliest dates of the starting impounding of the cascade reservoirs are as below: Xiluodu and Xiangjiaba re

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16

Lü, Xiuxiang, Weiwei Jiao, Xinyuan Zhou, Jianjiao Li, Hongfeng Yu, and Ning Yang. "Paleozoic Carbonate Hydrocarbon Accumulation Zones in Tazhong Uplift, Tarim Basin, Western China." Energy Exploration & Exploitation 27, no. 2 (2009): 69–90. http://dx.doi.org/10.1260/0144-5987.27.2.69.

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Diverse types of marine carbonate reservoirs have been discovered in the Tazhong Uplift, Tarim Basin, and late alteration of such reservoirs is obvious. The marine source rocks of the Cambrian-lower Ordovician and the middle-upper Ordovician provided abundant oil and gas for hydrocarbon accumulation. The hydrocarbons filled various reservoirs in multiple stages to form different types of reservoirs from late Caledonian to early Hercynian, from late Hercynian to early Indosininan and from late Yanshanian to Himalayan. All these events greatly complicated hydrocarbon accumulation. An analysis of

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17

PC, Nwankwo. "Efficient Model for Estimation of Dew Point Pressure in Gas Condensate Systems." Petroleum & Petrochemical Engineering Journal 8, no. 4 (2024): 1–8. https://doi.org/10.23880/ppej-16000397.

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Gas condensate reservoirs are a special class of gas reservoirs with temperatures which plot between the critical point temperature Tc and the cricondentherm Tcric on a Pressure–Temperature (P-T) phase diagram. The reservoirs’ produced streams are characterized by relatively, low C1 : C2 +ratio, implying compositions with significant fractions of high molecular weight (C2 +) hydrocarbons, called Natural Gas Liquids (NGLs). NGLs exist as gas at reservoir conditions of high pressures and temperatures but as liquids, called condensates (or distillates) at separator conditions, havinge higher mark

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18

Munadi, Suprajitno, Samsul Hidayat, Julikah Julikah, Oki Hendriana, and Eko Susanto. "UNDERSTANDING NATURALLY FRACTURED RESERVOIRS." Scientific Contributions Oil and Gas 31, no. 2 (2022): 28–34. http://dx.doi.org/10.29017/scog.31.2.1003.

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Naturally fractured reservoir differs from clastic reservoirs in the sense that the concepts of porous media which were usually applied for clastic reservoir analysis must be modified. This means that handling naturally fractured reservoir is also different compared to handling clastic reservoir. The porosity may be changed a bit bigger but the permeability is drastically changed. Also at a depth where rock layers are usually tight, naturally fractured reservoirs converts it to become a good reservoirs. Naturally fractured reservoirs can be found in some part of the Indonesian basin which may

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19

Jia, Ying, Jingqi Ouyang, Feng Xu, et al. "Evaluating Nitrogen Gas Injection Performance for Enhanced Oil Recovery in Fractured Basement Complex Reservoirs: Experiments and Modeling Approaches." Processes 13, no. 2 (2025): 326. https://doi.org/10.3390/pr13020326.

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This study explored the effectiveness of gas injection for enhanced oil recovery (EOR) in fractured basement complex reservoirs, combining laboratory experiments with numerical simulation analyses. The experiments simulated typical field conditions, focusing on understanding the interaction between the injected gas and the reservoir’s fracture–matrix system. The laboratory results showed that under the current reservoir pressure and temperature conditions, nitrogen gas flooding in the fractured matrix achieved a superior oil recovery efficiency compared to that of the other gases tested (CO2,

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20

Qarinur, M., E. M. R. Silitonga, S. Alvan, S. Ogata, N. Kinoshita, and H. Yasuhara. "Comprehensive Geometric Modeling of the Sibayak Geothermal Field." Journal of Physics: Conference Series 2908, no. 1 (2024): 012007. https://doi.org/10.1088/1742-6596/2908/1/012007.

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Abstract Geothermal reservoirs are significant sources of renewable energy. Accurate geometric modeling of these reservoirs is essential for understanding the distribution of heat and fluid dynamics within them. This study aims to develop a geometric model of the Sibayak geothermal field using borehole data. Borehole data provide detailed geological information, which is crucial for constructing a realistic geometric model. The methodology of this research involves several key steps: the collection of borehole data from the Sibayak geothermal field, the construction of a 3D geometric model of

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21

Qi, Chang Jun, Yuan Zhai, Bao Hong Lu, and Qing Gai Wang. "Research on Vertical Distribution of Water Temperature in Different Regulation Reservoirs." Advanced Materials Research 955-959 (June 2014): 3190–97. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3190.

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The vertical distribution of the reservoir water temperature depends on the scale of the reservoir, regulation manners, as well as the hydrological and geological conditions near reservoir areas. Based on water temperature observation from three different regulation reservoirs, this paper analyses the vertical distribution of these reservoirs water temperature. The preliminary conclusions are: for multi-annual regulation reservoirs, the upper zones usually have stable temperature stratification structures, while the lower zones have constant low temperature; for annual regulation reservoirs, w

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22

Wilopo, Wahyu, Hendy Setiawan, and Doni Prakasa Eka Putra. "Evaluation of Artificial Reservoir Management in Sleman Regency, Yogyakarta Special Region." Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan 17, no. 3 (2020): 205–14. http://dx.doi.org/10.14710/presipitasi.v17i3.205-214.

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The Indonesian government has promoted reservoir (embung) development programs throughout Indonesia. This program is primarily designed at supporting agricultural irrigation, especially in the dry season. However, in its implementation, there are often many obstacles both in technical and management, causing the main purpose of the reservoir construction cannot be achieved optimally. Therefore, this study aims to evaluate the condition of the reservoir located in Sleman Regency, Yogyakarta Special Region, in terms of physical, institutional, and management constraints. The study was conducted

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23

Cheng, Hong. "The Enhanced Oil Recovery Effect of Nitrogen-Assisted Gravity Drainage in Karst Reservoirs with Different Genesis: A Case Study of the Tahe Oilfield." Processes 11, no. 8 (2023): 2316. http://dx.doi.org/10.3390/pr11082316.

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For the Tahe Oilfield, there are multiple sets of karst reservoirs with different genesis developed in carbonate fracture-vuggy reservoirs and the varying karst reservoir type has a considerable influence on the distribution of residual oil. The complex characteristics of different karst reservoirs and the difficulty in producing the remaining oil in the middle and lower part of the reservoir greatly restrict the recovery effects. This work managed to comprehensively investigate the action mechanism of nitrogen-assisted gravity drainage (NAGD) on remaining oil in reservoirs with different kars

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24

Jiang, Chen, Qingjie Liu, Kaiqi Leng, Zubo Zhang, Xu Chen, and Tong Wu. "The Temporal and Spatial Evolution of Flow Heterogeneity During Water Flooding for an Artificial Core Plate Model." Energies 18, no. 2 (2025): 309. https://doi.org/10.3390/en18020309.

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In the process of reservoir water flooding development, the characteristics of underground seepage field have changed, resulting in increasingly complex oil–water distribution. The original understanding of reservoir physical property parameters based on the initial stage of development is insufficient to guide reservoir development efforts in the extra-high water cut stage. To deeply investigate the spatio-temporal evolution of heterogeneity in the internal seepage field of layered reservoirs during water flooding development, water–oil displacement experimental simulations were conducted bas

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25

Baljyan, Pargev, Arestak Sarukhanyan, and Eleonora Avanesyan. "Study of sediment deposition processes and assessment of the change in the W-H characteristics of the madaghis reservoir." EUREKA: Physics and Engineering, no. 1 (January 19, 2023): 3–12. http://dx.doi.org/10.21303/2461-4262.2023.002757.

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The accumulation of sediments in reservoir is always a problem. Over time, these accumulations occupy the volume meant for water management, dramatically reducing the reservoir's effectiveness. The environment of the river basin below the reservoir undergoes significant changes. In this regard, assessing changes in volumetric W-H characteristics, particularly in reservoirs built on high turbidity rivers, is critical. The Mataghis Reservoir on Tartar River was chosen as the object of study. The quantity of accumulated sediments was established by original measurements and was calculated in thre

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Baljyan, Pargev, Arestak Sarukhanyan, and Eleonora Avanesyan. "Study of sediment deposition processes and assessment of the change in the W-H characteristics of the madaghis reservoir." EUREKA: Physics and Engineering, no. 1 (January 19, 2023): 3–12. https://doi.org/10.21303/2461-4262.2023.002757.

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Abstract (sommario):

The accumulation of sediments in reservoir is always a problem. Over time, these accumulations occupy the volume meant for water management, dramatically reducing the reservoir's effectiveness. The environment of the river basin below the reservoir undergoes significant changes. In this regard, assessing changes in volumetric W-H characteristics, particularly in reservoirs built on high turbidity rivers, is critical. The Mataghis Reservoir on Tartar River was chosen as the object of study. The quantity of accumulated sediments was established by original measurements and was calculated in thre

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27

Lubkov, M. V., and K. O. Mosiichuk. "MODELING OF THE OPTIMAL INSTALLATION OF HORIZONTAL WELLS IN WEAKLY PERMEABLE ANISOTROPIC GAS-BEARING RESERVOIRS." PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Number, no. 18(68) (December 1, 2023): 108–19. http://dx.doi.org/10.31471/2304-7399-2023-18(68)-108-119.

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In order to increase gas production in anisotropic weakly permeable hard reaching reservoirs on the base of combined finite-element-difference method for the non-stationary anisotropic Leibenzon problem of piezoconductivity we have carried out a numerical simulation of the distribution of pressure drop around a horizontal production well in an anisotropic weakly permeable gas-bearing reservoir. We have established that the efficiency of gas recovery around a horizontal production well and, accordingly, its productivity significantly depends on the location of the well in a weakly permeable ani

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28

Luo, Yutian, Zhengming Yang, Zhenxing Tang, Sibin Zhou, Jinwei Wu, and Qianhua Xiao. "Longitudinal Reservoir Evaluation Technique for Tight Oil Reservoirs." Advances in Materials Science and Engineering 2019 (January 6, 2019): 1–8. http://dx.doi.org/10.1155/2019/7681760.

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Reservoir evaluation is a method for classifying reservoirs and the description of heterogeneity quantitatively. In this study, according to the characteristics of longitudinal physical properties of tight oil reservoirs, advanced experimental techniques such as nuclear magnetic resonance, high pressure mercury intrusion, and X-ray diffraction were adopted; the flow capacity, reservoir capacity, ability to build an effective displacement system, and the ability to resist damage in reservoir reconstruction were considered as evaluation indexes; average throat radius, percentage of movable fluid

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Amer, Manar M., and Dahlia A. Al-Obaidi. "Methods Used to Estimate Reservoir Pressure Performance: A Review." Journal of Engineering 30, no. 06 (2024): 83–107. http://dx.doi.org/10.31026/j.eng.2024.06.06.

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Reservoir pressure plays a significant role in all reservoir and production engineering studies. It is crucial to characterize petroleum reservoirs: by detecting fluid movement, computing oil in place, and calculating the recovery factor. Knowledge of reservoir pressure is essential for predicting future production rates, optimizing well performance, or planning enhanced oil recovery strategies. However, applying the methods to investigate reservoir pressure performance is challenging because reservoirs are large, complex systems with irregular geometries in subsurface formations with numerous

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Zhou, Chao, Na Sun, Lu Chen, et al. "Optimal Operation of Cascade Reservoirs for Flood Control of Multiple Areas Downstream: A Case Study in the Upper Yangtze River Basin." Water 10, no. 9 (2018): 1250. http://dx.doi.org/10.3390/w10091250.

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The purpose of a flood control reservoir operation is to prevent flood damage downstream of the reservoir and the safety of the reservoir itself. When a single reservoir cannot provide enough storage capacity for certain flood control points downstream, cascade reservoirs should be operated together to protect these areas from flooding. In this study, for efficient use of the reservoir storage, an optimal flood control operation model of cascade reservoirs for certain flood control points downstream was proposed. In the proposed model, the upstream reservoirs with the optimal operation strateg

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Silva, Suelen Cristina Alves da, Armando Carlos Cervi, Cleusa Bona, and André Andrian Padial. "Aquatic macrophyte community varies in urban reservoirs with different degrees of eutrophication." Acta Limnologica Brasiliensia 26, no. 2 (2014): 129–42. http://dx.doi.org/10.1590/s2179-975x2014000200004.

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AIM: Investigate spatial and temporal variation in the aquatic macrophyte community in four urban reservoirs located in Curitiba metropolitan region, Brazil. We tested the hypothesis that aquatic macrophyte community differ among reservoirs with different degrees of eutrophication. METHODS: The reservoirs selected ranged from oligotrophic/mesotrophic to eutrophic. Sampling occurred in October 2011, January 2012 and June 2012. Twelve aquatic macrophytes stands were sampled at each reservoir. Species were identified and the relative abundance of aquatic macrophytes was estimated. Differences amo

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Cao, Zhiguo, Suolin Jing, Lujun Wang, Fanbao Meng, and Yanning Han. "Influence of spatial structure migration of overlying strata on water storage of underground reservoir in coal mine." PLOS ONE 19, no. 1 (2024): e0292357. http://dx.doi.org/10.1371/journal.pone.0292357.

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Underground reservoir technology for coal mines can realize the coordinated development of coal exploitation and water protection in water-shortage-prone areas. The seepage effect of the floor seriously affects the safety of underground reservoirs under the action of mining damage and seepage pressure. Focusing on the problem of floor seepage in underground reservoirs, a spatial mechanical model of underground reservoirs was established. The main factors affecting the seepage of the surrounding rock were studied. The seepage pressure law in different stages of spatial structure evolution of ov

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Quan, Yufei, Yang Xu, Ran Mo, et al. "A Comprehensive Model for Assessing Synergistic Revenue–Cost for the Joint Operation of a Complex Multistakeholder Reservoir System." Water 15, no. 22 (2023): 3896. http://dx.doi.org/10.3390/w15223896.

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The joint operation of a multiobjective multistakeholder reservoir system enhances the revenues of downstream-compensated reservoirs at the expense of increasing the operation cost of upstream-compensating reservoirs. Challenges in quantifying the synergistic revenue–cost tradeoffs with incomplete information arise from difficulties in multistakeholder, high-dimensional, and combinational joint optimal operation modeling. This study proposed an equivalent aggregated reservoir multiobjective operation and synergistic revenue–cost assessment model. The proposed methodology includes three parts.

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Юсупова, K. Yusupova, Корсак, et al. "The Forecast of Phytoplankton Spring Blossoming in the Uchinsky Reservoir." Safety in Technosphere 4, no. 1 (2015): 12–17. http://dx.doi.org/10.12737/8226.

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Increase of water treatment efficiency in water supply systems during the spring period directly depends on the forecast accuracy related to mass blossoming of phytoplankton in drinking reservoirs. Object of research is the Uchinsky reservoir – the drinking reservoir having insignificant its own water collection area, and fed by water of Moscow Canal. The data on seasonal phytoplankton dynamics received in Akulovsky Hydrosite Laboratory of the MCUE &#34;Mosvodokanal&#34; for two stations: Pestovo (reservoir’s headwater) and Listvyanka (reservoir’s lower part), a

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35

Kim, Donghyun, Jongsung Kim, Wonjoon Wang, Haneul Lee, and Hung Soo Kim. "On Hypsometric Curve and Morphological Analysis of the Collapsed Irrigation Reservoirs." Water 14, no. 6 (2022): 907. http://dx.doi.org/10.3390/w14060907.

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The impact of irrigation reservoirs requires investigation through hydrological analysis to identify the flood control functions of these reservoirs. However, there is insufficient information concerning important geographical, morphological, and topographic characteristics, such as the reservoir cross-section. Therefore, this study aimed to identify the morphological and topographic characteristics of reservoirs using geographical information instead of measurement data. Ten reservoirs, including the Ga-Gog reservoir located in Miryang City, South Korea, were selected. The topographic informa

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36

Kjaran, Snorri Páll. "Geothermal Reservoir Engineering Experience in Iceland." Hydrology Research 17, no. 4-5 (1986): 417–38. http://dx.doi.org/10.2166/nh.1986.0033.

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Abstract (sommario):

Geothermal reservoir engineering studies have been carried out in Iceland for years concurrently with the utilization of the various geothermal fields. This has been essential in order to understand the responses of the reservoirs to exploitation. The importance of geothermal energy has grown steadily in the past decades relative to other primary energy resources, providing at present about 40% of the total energy consumed in Iceland. In this article the experience gained from exploiting Icelandic geothermal reservoirs is reviewed. The geological setting of the hydrothermal system is described

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37

Lee, Ji Ho, and Kun Sang Lee. "Multiphase, Multicomponent Simulation for Flow and Transport during Polymer Flood under Various Wettability Conditions." Journal of Applied Mathematics 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/101670.

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Abstract (sommario):

Accurate assessment of polymer flood requires the understanding of flow and transport of fluids involved in the process under different wettability of reservoirs. Because variations in relative permeability and capillary pressure induced from different wettability control the distribution and flow of fluids in the reservoirs, the performance of polymer flood depends on reservoir wettability. A multiphase, multicomponent reservoir simulator, which covers three-dimensional fluid flow and mass transport, is used to investigate the effects of wettability on the flow process during polymer flood. R

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38

Heidari, Hadi, Baptiste Francois, and Casey Brown. "Possibility Assessment of Reservoir Expansion in the Conterminous United States." Hydrology 9, no. 10 (2022): 175. http://dx.doi.org/10.3390/hydrology9100175.

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Abstract (sommario):

Reservoir expansion is commonly considered an adaptation strategy to attenuate water shortage conditions. In many locations in the United States, there are ongoing discussions about the effectiveness and feasibility of reservoir expansion with regard to the growing drought conditions and a consequent significant decrease in surface water. This study investigates if the expansion of the existing Unites States reservoirs should be still considered an effective and adequate management solution to cope with water shortages. To this end, we have defined three reservoir expansion metrics to assess t

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39

Gao, Bole, Fei Tian, Renfang Pan, et al. "Hydrothermal Dolomite Paleokarst Reservoir Development in Wolonghe Gasfield, Sichuan Basin, Revealed by Seismic Characterization." Water 12, no. 2 (2020): 579. http://dx.doi.org/10.3390/w12020579.

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Abstract (sommario):

Hydrothermal dolomite paleokarst reservoir is a type of porous carbonate reservoir, which has a secondary porosity and can store a large amount of oil and gas underground. The reservoir is formed by magnesium-rich hydrothermal fluids during the karstification and later stages of the transformation. Due to the strong heterogeneity and thin thickness of hydrothermal dolomite paleokarst reservoirs, it is a real challenge to characterize the spatial distribution of the reservoirs. In this paper, we studied the hydrothermal dolomite paleokarst reservoir in the Wolonghe gasfield of the eastern Sichu

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40

OLAGBEMIDE, PETER Taiwo, and Olufemi David Owolabi. "Appraisal of Fish Health Assessment Index in Three Major Reservoirs in Ekiti State, Southwest Nigeria." ASM Science Journal 19 (December 10, 2024): 1–10. https://doi.org/10.32802/asmscj.2023.1461.

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Abstract (sommario):

Increased anthropogenic activities and chemical contaminants in Ekiti State reservoirs have substantial effects on the reservoirs’ fish, which are valuable indicators of the health of the aquatic environments. The aim of the study was comparatively assessing the probable environmental deterioration in Egbe, Ero and Ureje reservoirs using the fish Health Assessment Index (HAI). Blood component analysis, necropsy data, and parasite index were used to compute HAI. Haematocrit values were not within the normal range in 78.85% (Ureje reservoir), 73.47% (Egbe reservoir), 57.38% (Ero reservoir), and

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41

Han, Yu, Peiru Wanyan, Haoli Wang, Mengfei Qu, Hanlie Cheng, and Fahim Theon. "Effectiveness of Oil Filling in Tight Sandstone Reservoirs of Yancheng Formation in Ordos Basin." Journal of Chemistry 2022 (October 4, 2022): 1–8. http://dx.doi.org/10.1155/2022/9907772.

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Abstract (sommario):

The Ordos basin is one of the important oil-bearing basins in China, with abundant tight sandstone oil resources, wide distribution, and large thickness. It is the most realistic field of unconventional oil and gas exploration in China, and it is also an important oil and gas replacement resource at present. Oil accumulation in tight reservoirs is obviously different from conventional oil and gas accumulation, and the key lies in studying the effectiveness of oil filling in tight reservoirs. In order to solve this problem, this paper takes the tight sandstone reservoir of Member 7 of the Yanch

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42

Ulseth, A. J., and R. O. Hall Jr. "Dam tailwaters compound the effects of reservoirs on the longitudinal transport of organic carbon in an arid river." Biogeosciences Discussions 12, no. 8 (2015): 6081–114. http://dx.doi.org/10.5194/bgd-12-6081-2015.

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Abstract (sommario):

Abstract. Reservoirs on rivers can disrupt organic carbon (OC) transport and transformation, but less is known how downstream river reaches directly below dams contribute to OC processing than reservoirs alone. We compared how reservoirs and their associated tailwaters affected OC quantity and quality by calculating particulate (P) OC and dissolved (D) OC fluxes, and measuring composition and bioavailability of DOC. We sampled the Yampa River near Maybell, Colorado, USA and the Green River above and below Fontenelle and Flaming Gorge reservoirs, and their respective tailwaters from early snowm

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43

Bai, Xiangwu, Zhiping Li, and Fengpeng Lai. "Optimal Selection Method for Sweet Spots in Low-Permeability Multilayered Reservoirs." Geofluids 2021 (January 18, 2021): 1–10. http://dx.doi.org/10.1155/2021/6698010.

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Abstract (sommario):

Low-permeability oil reservoirs account for more than two-thirds of China’s proven reserves, and most of them are multilayered; the traditional sweet spots focus on single-layered reservoirs. The sweet spots of low-permeability reservoirs have two meanings: the geologically superior reservoir and the beneficial development of the reservoir. In this study, a concept of reservoir stratification coefficient is proposed to evaluate the characteristics of multilayered reservoirs, and three indicators are proposed, namely, reservoir stratification coefficient, energy storage coefficient, and stratig

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44

Tashlykova, Tatiana G., Tamara G. Ryashchenko, Anna A. Dolgaya, and Elena A. Lukyanova. "Induced seismicity: a geo-ecological problem of a technogenic nature." Environmental & Socio-economic Studies 4, no. 3 (2016): 21–25. http://dx.doi.org/10.1515/environ-2016-0014.

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Abstract (sommario):

Abstract A debatable problem of the display of induced seismicity and its causes during the construction of reservoirs (Reservoir Induced Seismicity - RIS) is considered on the basis of an analysis of various publications. This paper describes the history of the evolution of ideas about the possibility of the activation of seismic events in the zones of influence of artificial reservoirs and examples of such activation in aseismic areas, which is a medium geological response to technogenic interference (e.g. Shivajisagar reservoir in West India, Mead reservoir in the USA, Danjiangkou Reservoir

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45

Song, Yunlong. "Study on Water Quality and Trophic Status of Subtropical Cascade Reservoirs in Dongjiang River Basin in Dry Season." E3S Web of Conferences 406 (2023): 03022. http://dx.doi.org/10.1051/e3sconf/202340603022.

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Abstract (sommario):

The Dongjiang River Basin is an important water source for Guangdong Province, providing water for living, production and ecology for more than 40 million people. The three large reservoirs, Xinfengjiang Reservoir, Fengshuba Reservoir and Baipenzhu Reservoir, are the three largest reservoirs in the Dongjiang River Basin. The quality of the water environment in the three reservoirs plays an important role in ensuring the safety of drinking water and promoting the overall protection, systematic restoration and comprehensive management of the water ecosystem. 11 indicators, including water temper

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46

Maju-Oyovwikowhe, E. G., and A. D. Osayande. "Hydrocarbon evaluation and distribution in Well-X and Well-Y in the Niger Delta Basin: Findings and validation through porosity comparison." Scientia Africana 22, no. 1 (2023): 255–78. http://dx.doi.org/10.4314/sa.v22i1.22.

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Abstract (sommario):

The aim of this study is to integrate well logs and core data to identify reservoir characteristics and determine the reservoir's petrophysical properties in order to improve the understanding of the reservoir and provide valuable information for reservoir management. Wells X and Y of the ‘SCOJAS’ Field in the Niger Delta Basin of Nigeria were analyzed using Gamma ray logs, Resistivity logs, Sonic, Neutron and Density Logs. The obtained results were compared with core data from the wells to verify their accuracy. Porosity values for Wells X and Y fall within the range typically observed in sed

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47

Finecountry, S. C. P., and S. Inichinbia. "Lithology and Fluid discrimination of Sody field of the Nigerian Delta." Journal of Applied Sciences and Environmental Management 24, no. 8 (2020): 1321–27. http://dx.doi.org/10.4314/jasem.v24i8.3.

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Abstract (sommario):

The lithology and fluid discrimination of an onshore Sody field, of the Niger Delta was studied using gamma ray, resistivity and density logs from three wells in the field in order to evaluate the field’s reservoir properties. Two reservoir sands (RES 1 and RES 2) were delineated and identified as hydrocarbon bearing reservoirs. The petrophysical parameters calculated include total porosity, water saturation and volume of shale. The results obtained revealed that the average porosity of the reservoir sands, range from 21% to 39%, which is excellent indicator of a good quality reservoir and pro

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48

Chen, Mei Tao, Ning Yang, and Shang Ming Yang. "Paleozoic Carbonate Hydrocarbon Accumulation Zones in Tahong Uplift Tarim Basin, Western China." Advanced Materials Research 403-408 (November 2011): 1511–16. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.1511.

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Abstract (sommario):

Analyzing the discovered carbonate reservoirs in the Tazhong area, Tarim Basin indicates that the development of a reservoir is controlled by subarial weathering and freshwater leaching processes, sedimentation, early diagenesis, and alteration by deep fluids. According to the origin and lateral distribution of reservoirs, the hydrocarbon accumulation zones in the Tazhong area are classified into four types: buried hill and palaeoweathering crust, organic buildup reef-bank, dolomite interior, and deep fluid alteration. Different types of carbonate hydrocarbon accumulation zones are distributed

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49

Silva, Juliano Pilotto Abelardino da, Adriane Esquivel Muelbert, Elton Celton de Oliveira, and Luís Fernando Fávaro. "Reproductive tactics used by the Lambari Astyanax aff. fasciatus in three water supply reservoirs in the same geographic region of the upper Iguaçu River." Neotropical Ichthyology 8, no. 4 (2010): 885–92. http://dx.doi.org/10.1590/s1679-62252010000400019.

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Abstract (sommario):

The species Astyanax aff. fasciatus was investigated as regards differences in reproductive tactics in three reservoirs with different ages (Iraí, Piraquara and Passaúna) located in the same geographic region. The biological material was obtained through monthly collections carried out from july/2006 to june/2007. The average value of the gonadosomatic index (GSI) in Passaúna reservoir was significantly higher in relation to the values obtained in the other reservoirs. Spawning was total in Iraí reservoir and partial in the others. Allometric growth of the species was negative in Iraí reservoi

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50

Li, Xinshuai, Xuesong Yang, Huilai Wang, et al. "Accurate identification of traps and pinch-outs on a stratigraphic reservoir-A case from Hala’alate Mountain in the Junggar Basin, China." PLOS ONE 19, no. 5 (2024): e0303467. http://dx.doi.org/10.1371/journal.pone.0303467.

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Abstract (sommario):

In the investigation of stratigraphic reservoirs, a significant discrepancy frequently exists between the delineation of the formation pinch-out line as traced using the characteristics of seismic wave reflections and the actual location of the formation pinch-out line. This has been the main problem restricting further hydrocarbon exploration and development. In this study, Hala’alate Mountain on the northwestern margin of the Junggar Basin is taken as an example for carrying out the study of stratigraphic reservoirs by integrating logging, drilling, and 3D seismic data. On the one hand, in s

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