检索结果-南通市图书馆

Efficient production optimization for naturally fractured reservoir using EDFM

Petroleum Science 2023年第4期20卷 2268-2281页

作者： Jian-Chun Xu Wen-Xin Zhou Hang-Yu Li Key Laboratory of Unconventional Oil&Gas Development China University of Petroleum(East China)Ministry of EducationQingdao266580ShandongPR China School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongPR China

naturally fractured reservoirs make important contributions to global oil and gas reserves and *** modeling and simulation of naturally fractured reservoirs are different from conventional reservoirs as the existence of natural *** address the development optimization problem of naturally fractured reservoirs,we propose an optimization workflow by coupling the optimization methods with the embedded discrete fracture model(EDFM).Firstly,the effective and superior performance of the workflow is verified based on the conceptual *** stochastic simplex approximate gradient(StoSAG)algorithm,the ensemble optimization(EnOpt)algorithm,and the particle swarm optimization(PSO)algorithm are implemented for the production optimization of naturally fractured reservoirs based on the improved versions of the Egg model and the PUNQ-S3 *** results of the two cases demonstrate the effectiveness of this optimization workflow by finding the optimal well controls which yield the maximum net present value(NPV).Compared to the initial well control guess,the final NPV obtained from the production optimization of fractured reservoirs based on all three optimization algorithms is significantly *** with the optimization results of the PSO algorithm,StoSAG and EnOpt have significant advantages in terms of final NPV and computational *** results also show that fractures have a significant impact on reservoir *** economic efficiency of fractured reservoir development can be significantly improved by the optimization workflow.

关键词： Production optimization naturally fractured reservoir Embedded discrete fracture method StoSAG algorithm PSO algorithm

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

naturally fractured hydrocarbon reservoir simulation by elastic fracture modeling

引用

Petroleum Science 2017年第2期14卷 286-301页

作者： Mehrdad Soleimani Faculty of Mining Petroleum and Geophysics Shahrood University of Technology Shahrood Iran

Accurate fluid flow simulation in geologically complex reservoirs is of particular importance in construction of reservoir *** approaches in naturally fractured reservoir simulation involve use of unstructured grids or a structured grid coupled with locally unstructured grids and discrete fracture *** methods suffer from drawbacks such as lack of flexibility and of ease of *** this study,I combined fracture modeling by elastic gridding which improves flexibility,especially in complex *** proposed model revises conventional modeling fractures by hard rigid planes that do not change through *** is a dubious assumption,especially in reservoirs with a high production rate in the *** proposed elastic fracture modeling considers changes in fracture properties,shape and aperture through the *** strategy is only reliable for naturally fractured reservoirs with high fracture permeability and less permeable matrix and parallel fractures with less *** of elastic fracture modeling results with conventional modeling showed that these assumptions will cause production pressure to enlarge fracture apertures and change fracture shapes,which consequently results in lower production compared with what was previously *** is concluded that an elastic gridded model could better simulate reservoir performance.

关键词： reservoir performance Discrete fracture model naturally fractured reservoir History matching Elastic gridding

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modeling flow in naturally fractured reservoirs： effect of fracture aperture distribution on dominant sub-network for flow

引用

Petroleum Science 2017年第1期14卷 138-154页

作者： J. Gong W. R. Rossen Department of Geoscience and Engineering Delft University of Technology 2628 CN Delft The Netherlands

Fracture network connectivity and aperture （or conductivity） distribution are two crucial features controlling flow behavior of naturally fractured reservoirs. The effect of connectivity on flow properties is well documented. In this paper, however, we focus here on the influence of fracture aperture distribution. We model a two dimensional fractured reservoir in which the matrix is impermeable and the fractures are well connected. The fractures obey a power-law length distribution, as observed in natural fracture networks. For the aperture distribution, since the information from subsurface fracture networks is limited, we test a number of cases： log-normal distributions （from narrow to broad）, power-law distributions （from narrow to broad）, and one case where the aperture is pro- portional to the fracture length. We find that even a well- connected fracture network can behave like a much sparser network when the aperture distribution is broad enough （c~ 〈 2 for power-law aperture distributions and σ ≥ 0.4 for log-normal aperture distributions）. Specifically, most fractures can be eliminated leaving the remaining dominant sub-network with 90% of the permeability of the original fracture network. We determine how broad the aperture distribution must be to approach this behavior and the dependence of the dominant sub-network on the parameters of the aperture distribution. We also explore whether one can identify the dominant sub-network without doing flow calculations.

关键词： naturally fractured reservoir Non-uniformflow Effective permeability Percolation Waterflood

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prediction of oil recovery in naturally fractured reservoirs subjected to reinfiltration during gravity drainage using a new scaling equation

引用

Petroleum Exploration and Development 2020年第6期47卷 1307-1315页

作者： AGHABARARI Amirhossein GHAEDI Mojtaba RIAZI Masoud Department of Petroleum Engineering School of Chemical and Petroleum EngineeringP.O.Box ***Shiraz UniversityShirazIran reservoir Modeling and Simulation Center(RMSC) P.O.Box ***Shiraz UniversityShirazIran

By comparing numerical simulation results of single-porosity and dual-porosity models,the significant effect of reinfiltration to naturally fractured reservoirs was confirmed.A new governing equation was proposed for oil drainage in a matrix block under the reinfiltration *** inspectional analysis,a dimensionless equation suitable for scaling of recovery curves for matrix blocks under reinfiltration has been *** the design of experiments,test cases with different rock and fluid properties were defined to confirm the scope of the presented *** defined cases were simulated using a realistic numerical simulation *** method can estimate the oil amount getting into the matrix block through reinfiltration,help simulate the oil drainage process in naturally fractured reservoirs accurately,and predict the recovery rate of matrix block in the early to middle periods of *** the defined scaling equation in the dual-porosity model can improve the accuracy of the predicted recovery rate.

关键词： naturally fractured reservoir gravity drainage reinfiltration scaling equation dual-porosity simulation inspectional analysis

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Transient flow model and pressure dynamic features of tree-shaped fractal reservoirs

引用

Journal of Hydrodynamics 2014年第4期26卷 654-663页

作者：谭晓华李晓平 State Key Laboratory of Oil and Gas reservoir Geology and Exploitation Southwest Petroleum University

A transient flow model of tree-shaped fractal reservoirs is built by embedding a fracture network simulated by a tree-shaped fractal network into a matrix system. The model can be solved using the Laplace conversion method. The dimensionless bottom hole pressure can be obtained using the Stehfest numerical inversion method. The bi-logarithmic type curves for the trce-shaped fractal reservoirs are thus obtained. The pressure transient responses under different fractal factors are discussed. The factors with a primary effect on the inter-porosity flow regime include the initial branch number N, the length ratio α, and the branch angle θ. The diameter ratio β has a significant effect on the fracture radial flow, the inter-porosity and the total system radial flow regimes. The total branch level M of the network mainly influences the total system radial flow regime. The model presented in this paper provides a new methodology for analyzing and predicting the pressure dynamic characteristics of naturally fractured reservoirs.

关键词： tree-shaped fractal transient flow pressure dynamic characteristic naturally fractured reservoir type curve

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanistic simulation of fracture effects on miscible CO_(2)injection

引用

Petroleum Research 2022年第4期7卷 437-447页

作者： Seyed Mohammad Hossein Hashemi Behnam Sedaee Institute of Petroleum Engineering School of Chemical EngineeringCollege of EngineeringUniversity of TehranIran

Miscible injection of carbon dioxide(CO_(2))into oil reservoirs as an Enhanced Oil Recovery(EOR)method has proved to be highly *** to the volume of the world's recoverable oil resides inside the fractured reservoirs,investigation of the controlling parameters in the efficient injection of miscible CO_(2) is of paramount importance,mainly owing to the intricacies and complexities associated with this *** complexity in fractured reservoirs arises due to the presence of two distinct media for fluid transfer(i.e.,matrix and fracture network)and the corresponding differences in fluid ***,performance of miscible carbon dioxide injection in these reservoirs was investigated through mechanistic simulation model in the form of dual-porosity(DP),and dual porosity-dual permeability(DPP).Moreover,due to limited supply and high injection costs of this gas in its pure form,performance of the miscible CO_(2) injection combined with C_(1),N_(2),and H_(2)S was also surveyed and compared to pure gas injection case.A sensitivity analysis was also performed based on fracture porosity,fracture horizontal and vertical permeability,matrix horizontal permeability,block height shape factor,matrix capillary pressure,and impure injected components in DP and DPP models,showing that matrix horizontal permeability and capillary pressure have the greatest,and porosity has the lowest impact on miscibility performance and oil recovery in these *** the end,after investigating the effect of different injection cases on miscibility performance and oil recovery,it was concluded that the highest oil recovery in miscible gas injection obtained through optimization of a gas composition having the lowest minimum miscibility pressure(MMP)and the lowest density.

关键词： naturally fractured reservoir Carbon dioxide Miscibility Impurity Simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

On the evaluation of steam assisted gravity drainage in naturally fractured oil reservoirs

引用

Petroleum 2017年第2期3卷 273-279页

作者： Seyed Morteza Tohidi Hosseini Shayan Esfahani Mehran Hashemi Doulatabadi Abdolhossein Hemmati Sarapardeh Amir H.Mohammadi Department of Petroleum Engineering Amirkabir University of TechnologyTehranIran Institut de Recherche en Genie Chimique et Petrolier(IRGCP) Paris CedexFrance Thermodynamics Research Unit School of EngineeringUniversity of KwaZulu-NatalHoward College CampusKing George V AvenueDurban 4041South Africa Departement de Genie des Mines de la Metallurgie et des MateriauxFaculte des Sciences et de GenieUniversite LavalQuebec(QC)G1V 0A6Canada

Steam Assisted Gravity Drainage(SAGD)as a successful enhanced oil recovery(EOR)process has been applied to extract heavy and extra heavy *** amount of global heavy oil resources exists in carbonate reservoirs which are mostly naturally fractured *** clastic reservoirs,few studies were carried out to determine the performance of SAGD in carbonate *** though SAGD is a highly promising technique,several uncertainties and unanswered questions still exist and they should be clarified for expansion of SAGD methods to world wide applications especially in naturally fractured *** this communication,the effects of some operational and reservoir parameters on SAGD processes were investigated in a naturally fractured reservoir with oil wet rock using CMG-STARS thermal *** purpose of this study was to investigate the role of fracture properties including fracture orientation,fracture spacing and fracture permeability on the SAGD performance in naturally fractured ***,one operational parameter was also studied;one new well configuration,staggered well pair was *** indicated that fracture orientation influences steam expansion and oil production from the horizontal well *** was also found that horizontal fractures have unfavorable effects on oil production,while vertical fractures increase the production rate for the horizontal ***,an increase in fracture spacing results in more oil production,because in higher fracture spacing model,steam will have more time to diffuse into matrices and heat up the entire ***,an increase in fracture permeability results in process enhancement and ultimate recovery ***,diagonal change in the location of injection wells(staggered model)increases the recovery efficiency in long-term production plan.

关键词： SAGD EOR naturally fractured reservoir Operational parameters

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：