Geosystem Engineering最新文献_第4页

A novel method to calculate the increasing rate of water cut in water flooding oil reservoirs 计算注水油藏含水率增长率的新方法

IF 1.7

Geosystem Engineering Pub Date : 2023-03-26 DOI: 10.1080/12269328.2023.2182370

Hongyou Zhang, Yuejie Wang, M. Wang, Qi Deng, Yanhui Zhang

{"title":"A novel method to calculate the increasing rate of water cut in water flooding oil reservoirs","authors":"Hongyou Zhang, Yuejie Wang, M. Wang, Qi Deng, Yanhui Zhang","doi":"10.1080/12269328.2023.2182370","DOIUrl":"https://doi.org/10.1080/12269328.2023.2182370","url":null,"abstract":"ABSTRACT In this paper, a new method for studying the theoretical water cut increasing rate of water flooding reservoirs is proposed based on the correction of the traditional fractional flow equation. First, the stream tube model was used to solve the saturation distribution field of reverse nine-point injection-production well pattern. Second, through analyzing the saturation results, the linear formula between the average water saturation of the reservoir after water breakthrough and the water saturation at the outlet was established for the first time. Then, based on the linear formula, the traditional fractional flow equation was corrected and a new method was proposed. Finally, the proposed method was applied to Bohai S oilfield to demonstrate its accuracy and practicability. On the one hand, the results show that compared with the traditional fractional flow equation method, the prediction accuracy of the proposed method has increased from 80% to more than 92%. On the other hand, the application of the new method effectively evaluates the development effect of oilfields with high water cut and guides formulation of reasonable adjustment measures.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42954482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of air pollution on groundwater contamination through water reservoir 大气污染通过水库对地下水污染的影响

IF 1.7

Geosystem Engineering Pub Date : 2023-03-09 DOI: 10.1080/12269328.2023.2187888

Animesh Samanta, Ayan Chatterjee, M. Singh

{"title":"Impact of air pollution on groundwater contamination through water reservoir","authors":"Animesh Samanta, Ayan Chatterjee, M. Singh","doi":"10.1080/12269328.2023.2187888","DOIUrl":"https://doi.org/10.1080/12269328.2023.2187888","url":null,"abstract":"ABSTRACT In this article, an incisive analysis had been carried out to investigate the impact of air pollution on groundwater through a water reservoir. The primary objective of the present work was to develop a mathematical model that shows the direct impact of air pollution on groundwater contamination. The advection-dispersion equation (ADE) was considered to model the contaminant transport through the different media. Due to its inherent complexities, contaminant transport through the different domains was often difficult to model. To overcome it, the simple solution was to consider different velocities and dispersion for different domains. It was considered that the air zone was directly connected with the groundwater through a large water body. Initially, water body and aquifer had been considered contaminant free along with the flux type boundary condition at the semi-infinite part of the boundary. The model had been solved analytically using Laplace transformations. The current study demonstrates that depending upon the length of the medium the impact of contaminant would vary significantly. The air pollution source height had a direct impact on the contaminant concentration level in the aquifer aquitard system. The current study also illustrates that around 25% of air pollutants were induced in the groundwater.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47035958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Liquid–liquid separation of copper and nickel ammine complexes using phenolic oxime mixture with tributyl phosphate 用磷酸三丁酯混合酚肟液-液分离铜镍胺配合物

IF 1.7

Geosystem Engineering Pub Date : 2023-03-04 DOI: 10.1080/12269328.2023.2187887

S. Ilyas, R. Srivastava, Suhyeon Jin, Hyunjung Kim

引用次数: 6

Complex selection of a demulsifier: laboratory studies, numerical simulation and field tests 破乳剂的复杂选择:实验室研究、数值模拟和现场试验

IF 1.7

Geosystem Engineering Pub Date : 2023-02-22 DOI: 10.1080/12269328.2023.2179116

Yurievich Ilyushin Pavel, Vyatkin Kirill Andreevich, Kozlov Anton Vadimovich

{"title":"Complex selection of a demulsifier: laboratory studies, numerical simulation and field tests","authors":"Yurievich Ilyushin Pavel, Vyatkin Kirill Andreevich, Kozlov Anton Vadimovich","doi":"10.1080/12269328.2023.2179116","DOIUrl":"https://doi.org/10.1080/12269328.2023.2179116","url":null,"abstract":"ABSTRACT The formation of oil-in-water emulsions is one of the main problems in oil production in many oil fields around the world. The transition of exploited fields to the later stages of development exacerbates this complication. The paper presents a method for the complex selection of a demulsifier for in-line demulsification. Laboratory studies were carried out to select the most effective brand and dosage of the demulsifier. Numerical modeling of the influence of the geometrical parameters of the nozzle for the distributed introduction of the demulsifier into the flow on the degree of distribution of the demulsifier in the pipeline section has been performed. As a result of field research at the target object, a 2-fold reduction in the demulsifier dosage was achieved while maintaining pressure in the pipeline. Similar studies were performed for three other objects, where a reduction in reagent consumption by 60, 59 and 25%, respectively, were achieved. The performed study indicates the importance of not only research on the selection of demulsifiers, but also the study of the influence of the method of its introduction into the oil flow to increase the degree of interaction of the reagent with the emulsion being processed.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43665856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reservoir automatic history matching method using ensemble Kalman filter based on shrinkage covariance matrix estimation 基于收缩协方差矩阵估计的集成卡尔曼滤波器储层历史自动匹配方法

IF 1.7

Geosystem Engineering Pub Date : 2023-01-09 DOI: 10.1080/12269328.2022.2163308

Cao Jing

引用次数: 0

Modeling hydraulic fracture fluid efficiency in tight gas reservoirs using non-linear regression and a back-propagation neural network 基于非线性回归和反向传播神经网络的致密气藏水力压裂液效率建模

IF 1.7

Geosystem Engineering Pub Date : 2023-01-02 DOI: 10.1080/12269328.2022.2159546

Rami Khouli, A. Garrouch, F. Al-Ruhaimani

{"title":"Modeling hydraulic fracture fluid efficiency in tight gas reservoirs using non-linear regression and a back-propagation neural network","authors":"Rami Khouli, A. Garrouch, F. Al-Ruhaimani","doi":"10.1080/12269328.2022.2159546","DOIUrl":"https://doi.org/10.1080/12269328.2022.2159546","url":null,"abstract":"ABSTRACT This study introduces a back-propagation (BP) neural network model and a regression model for estimating the fracture fluid efficiency based on a data set consisting of 1261 staged and ramped simulation runs of tight gas reservoirs subjected to hydraulic fracturing treatment. Data were generated using a 3-D commercial simulator which is a versatile software portfolio that models many well configurations, proppant placement, and fracture geometries. The BP network inputs consist of shear rate/fracture conductivity ratio, the injection rate, reservoir permeability, formation closure stress, reservoir thickness, effective viscosity, and fracture height. The neural network model was able to generate satisfactory estimates of the fracture fluid efficiency for the training dataset, and for the blind testing data. An average error of approximately 2.5% was obtained for the training set, and an average error of 3% was obtained for the testing set. An empirical non-linear regression model has been constructed based on dimensionless groups derived by applying dimensional analysis to a set of variables consisting of the maximum fracture width, fracture length, fracture height, effective viscosity, shear rate/fracture conductivity ratio, reservoir thickness, injection rate, reservoir permeability, and formation closure stress. The average error for estimating the fluid efficiency using the non-linear regression empirical model was approximately 6.17%. Since the non-linear regression model has an explicit formulation, it is easier to apply than the neural network model. The empirical regression model estimates of the fluid efficiency appeared to be unbiased and were more precise than those estimates obtained using either the KGD or the PKN 2-D models. The introduced BP model and the non-linear regression model offer fast and inexpensive alternatives to the application of three-dimensional simulators for estimating the fluid efficiency.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45784352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of heavy metal pollution associated with tailing dam in gold mining area, southern ethiopia 埃塞俄比亚南部金矿区尾矿坝重金属污染评价

IF 1.7

Geosystem Engineering Pub Date : 2022-12-26 DOI: 10.1080/12269328.2022.2160833

Gera Techane, G. Sahilu, Lena Alakangas, W. Mulat, H. Kloos

{"title":"Assessment of heavy metal pollution associated with tailing dam in gold mining area, southern ethiopia","authors":"Gera Techane, G. Sahilu, Lena Alakangas, W. Mulat, H. Kloos","doi":"10.1080/12269328.2022.2160833","DOIUrl":"https://doi.org/10.1080/12269328.2022.2160833","url":null,"abstract":"ABSTRACT Tailings dam is the main heavy metal pollution source in mining areas. In this study, the concentration of heavy metals in soil and water from upstream and downstream of the tailings dam was analyzed. The concentration of As, Cd, Cu, Ni, Pb, and W in tailings soil exceeded the standard value but Hg and Zn in the tailings soil were far below the standard. Average concentrations of As, Pb, and W in soil samples were above the upstream reference soil. The level of As and Pb decreases, downstream as the distance from the tailings dam increases. The mean concentrations of the heavy metals in water for Ni, Cu, Zn, Pb, and Cd were 106.3, 57.3, 21.8, 14.5, and 8.0 µg/L, respectively. The Ni contents in all studied water samples had concentrations higher than Awata River and WHO guidelines for drinking water. Both geo-accumulation and ecological risk indices have indicated significant heavy metal pollution in the study area. The overall results of this study showed that the soil and water downstream of the tailings dam were not safe and must be protected against access to humans and domestic animals.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42562421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Using the electrokinetic remediation (EKR) technique for the soil remediation from the contaminants 利用电动修复技术从污染物中修复土壤

IF 1.7

Geosystem Engineering Pub Date : 2022-12-22 DOI: 10.1080/12269328.2022.2159884

Faraz Biabanaki, J. Neshati, M. Ehteshami

引用次数: 0

Feasibility study on the use of magnetic susceptibility for recovery of vanadium component in magnetite 利用磁化率回收磁铁矿中钒组分的可行性研究

IF 1.7

Geosystem Engineering Pub Date : 2022-11-02 DOI: 10.1080/12269328.2022.2161074

Yoo Seong Lim, Jaehyuk Choi, Kyoungkeun Yoo, Sang-hun Lee

{"title":"Feasibility study on the use of magnetic susceptibility for recovery of vanadium component in magnetite","authors":"Yoo Seong Lim, Jaehyuk Choi, Kyoungkeun Yoo, Sang-hun Lee","doi":"10.1080/12269328.2022.2161074","DOIUrl":"https://doi.org/10.1080/12269328.2022.2161074","url":null,"abstract":"ABSTRACT Vanadium in the vanadium-bearing titanomagnetite (VTM) exist by replacing iron in the magnetite crystal, and magnetite should be recovered separately from titanium components in the vanadium-bearing titanomagnetite. In the present study, a sensing system was proposed by measuring magnetic susceptibility of magnetite because the magnetic susceptibility can be easily and quickly measured. The effects of mixing ratio of magnetite and ilmenite with silica and the distance between the magnetic susceptibility meter and the sample bed on the magnetic susceptibility were investigated. The magnetic susceptibility of the mixture of magnetite and ilmenite with 0.1 g or 0.2 g of silica decreased with increasing the ratio of ilmenite in the mixture, but the effect of silica addition was not significant. When the distance between the magnetic susceptibility meter and the sample bed increased, the magnetic susceptibility of magnetite decreased, but the magnetic susceptibility decreased with increasing the thickness of magnetite sample bed of magnetite. Because the magnetic susceptibility depended strongly on the content of magnetite, the sensing system using the magnetic susceptibility measurement could be successfully applied to detect magnetite.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45895976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Thermal behavior of acidic and alkali activated laterite based geopolymer: a comparative study 酸、碱活化红土基地聚合物的热行为比较研究

IF 1.7

Geosystem Engineering Pub Date : 2022-11-02 DOI: 10.1080/12269328.2022.2157895

Raphael Belinga Essama Boum, Francois Mvondo Owono, C. R. Kaze, Juste Constant Essomba Essomba, Bakary Souleymanou, J. G. Deutou Nemaleu, M. Ntamak-Nida

{"title":"Thermal behavior of acidic and alkali activated laterite based geopolymer: a comparative study","authors":"Raphael Belinga Essama Boum, Francois Mvondo Owono, C. R. Kaze, Juste Constant Essomba Essomba, Bakary Souleymanou, J. G. Deutou Nemaleu, M. Ntamak-Nida","doi":"10.1080/12269328.2022.2157895","DOIUrl":"https://doi.org/10.1080/12269328.2022.2157895","url":null,"abstract":"ABSTRACT Laterite soils account for 70% of Cameroon territory. The present study aims to investigate the thermal behavior of geopolymer from both thermally activated lateritic clay and indurated laterite at 700°C. The resulting calcined powder was consolidated with phosphoric acid (PA) and alkaline solution (AS), and after 28 days of cure, the geopolymer then was heated at 200°C, 400°C, 600°C, 800°C and 1000°C. At room temperature (25°C), applying an acidic medium developed best mechanical performance (85.6 MPa) using highly indurated laterite (CUPA) than clayey-rich laterite (EMPA) that gave 44.86 MPa. Increasing the heating temperature up to 1000°C greatly affected the samples consolidated with an acid solution than with alkaline medium. This suggests the best stability of N-A-S-H than phosphate binder at high temperature. The high performance of acid-activated samples is related to the alteration of iron minerals in acid medium allowing the formation of Fe-O-P bonds, while the decrease in compressive strength with the increase of heating temperature up to 1000°C is related to the dehydroxylation of formed binder phases that weakened the structure.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43198800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3