摘要
针对低渗透薄互砂岩油藏A油田C9区块水平井井区储层物性差、非均质性强、开发难度大等问题,为改善水平井井区开发效果、提高水平井单井产能,应用灰色关联法,结合数值模拟软件,分析影响压裂水平井产能的主要因素,开展水平井压裂参数优化研究,结果表明裂缝半长和裂缝间距是影响压裂水平井产能的主要因素,优选出水平井压裂方案:裂缝半长为150m,裂缝间距为40m,裂缝导流能力为50μm~2·cm;裂缝与水平段夹角为90°.应用灰色关联分析法明确水平井压裂效果的主控因素,为低渗透薄互砂岩油藏现场水平井压裂施工提供了思路和借鉴,具有一定的理论指导意义.
Aiming at the problems of poor physical properties,strong heterogeneity,and difficulty in development of horizontal wells in the C9 block of oilfield A in low-permeability thin sandstone reservoirs,in order to improve the development effect of horizontal wells and increase the productivity of horizontal wells,Applying grey correlation method and numerical simulation software to analyze the main factors that affect the productivity of fractured horizontal wells,and carry out the optimization research of horizontal well fracturing parameters.The results show that the fracture half-length and fracture spacing are the main factors affecting the productivity of fractured horizontal wells.A horizontal well fracturing scheme:the fracture half-length is 150 m,the fracture spacing is 40 m,the fracture conductivity is 50μm~2·cm;the angle between the fracture and the horizontal section is 90°.The gray correlation analysis method is used to clarify the main controlling factors of the fracturing effect of horizontal wells,which provides ideas and references for the fracturing construction of horizontal wells in low-permeability thin interstitial sandstone reservoirs,and has certain theoretical guiding significance.
作者
闫文华
暴赫
司想
余延波
YAN Wen-hua;BAO He;SI Xiang;YU Yan-bo(School of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,China;PetroChina Tarim Oilfield Company,Hede Oil and Gas Development Department,Korla 841000,China;Research Center of Reservoir Reconstruction in China Petroleum Xibu Drilling,Karamay 834000,China)
出处
《数学的实践与认识》
2021年第2期145-151,共7页
Mathematics in Practice and Theory
基金
国家科技重大专项“低物性段改造酸化压裂技术研究”(2016ZX05012-002-006)
东北石油大学国家基金培育基金“济阳坳陷泥页岩微观孔隙结构特征及流动机制研究”(2018GPYB-02)。
关键词
水平井
灰色关联分析法
关联度
压裂参数
局部加密
horizontal well
grey correlation analysis method
correlation degree
fracturing parameter
local infillin
