特低渗透油藏井网部署与人工压裂裂缝优化  

OPTIMIZATIONS BETWEEN THE PATTERN DEPLOYMENT AND ARTIFICIAL FRACTURING FOR ULTRA-LOW PERMEABILITY OIL RESERVOIR

作　　者：徐庆岩[1] 杨正明[1,2] 王学武[2] 齐亚东[1] 战剑飞[3] 

机构地区：[1]中国科学院渗流流体力学研究所,河北廊坊065007 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2012年第5期93-97,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金（10672187）;国家科技重大专项（2008ZX05000-013-02）;国家油气重大专项（2011ZX0513-005）.

摘　　要：流体在特低渗透储层中渗流符合非线性渗流规律，根据研制的特低渗透非线性渗流数值模拟软件，在考虑非线性弯曲段影响的渗流数学模型基础上，结合矿场实际和室内岩心实验建立了不同井网形式、井排距、裂缝穿透比和裂缝导流能力的模型，并将计算结果进行了对比分析。算例计算表明：矩形井网为最佳井网形式，500m×150m矩形井网为最佳井网，最佳裂缝穿透比为0．75左右，人工裂缝导流能力最优值为50μm·cm。Fluid seepage in ultra-low permeability reservoirs conforms to the nonlinear seepage law, according to the seepage numerical simulation software developed for the above reservoir, on the basis of the flow mathematical model considering of the influences of nonlinear bent section, several models of different pattern configurations, well array spacing, fracture penetration ratio and fracture conductivity are established and comparatively analyzed with the combination of the field application and laboratory experimental data. The calculation results show that： the rectangle well pattern is the best one; among them, 500 m×150 m is the best spacing configuration; the optimal fracture penetrafion ratio is about 0. 75 ; the optimal value of artificial fracture conductivity is 50μm·cm.

关 键 词：特低渗透 非线性渗流 井网形式 井排距 裂缝穿透比 裂缝导流能力 

分 类 号：TE324[石油与天然气工程—油气田开发工程]