Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Natural Gas Industry》 2012-11
Add to Favorite Get Latest Update

Optimization of fracture parameters of fractured horizontal wells in tight sandstone gas reservoirs

Zeng Fanhui 1,Guo Jianchun 1,He Songgen 1,Zeng Lijun 2(1.Petroleum Engineering Institute,Southwest Petroleum University,Chengdu,Sichuan 610500,China;2.Drilling and Oil Production Technology Research Institute of Qinghai Oilfield Company,PetroChina,Dunhuang,Gansu736202,China)  
This paper aims to solve the problem of how to comprehensively optimize multiple parameters of a fractured horizontal well.First,based on the knowledge of unstable effluent seepage,complex potential theory,superposition principle and numerical method are adopted to develop aproductivity prediction model of fractured horizontal gas wells with the fracture interference taken into account.On this basis,the rules are discussed on how an individual factor will have an impact on fractured horizontal well production.Moreover,in combination with the orthogonal experiment design method and grey correlation theory,the ranking of sensitive parameters impacting fractured horizontal well productivity are determined,and thus an optimal design is accomplished for multiple parameters of fractured horizontal wells.The calculation results show that the importance of parameters influencing the well production ranks as follows : stratum permeability,reservoir thickness,porosity,and the length of the horizontal section,the number of fractures,fracture length and flow conductivity.The preferred combination of horizontal well parameters is as follows : horizontal section of 1000mlong,10fractures(60mlong) and conductivity of 10 μ m 2.cm.In an actual field practice according to the optimized parameters,a significant increase was finally found at the open flow capacity in that well.
【Fund】: 国家自然科学基金资助项目“油气层岩矿酸损伤理论研究”(编号:51074138)
【CateGory Index】: TE37
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved