鄂尔多斯盆地长8、长6超低渗透油藏开发对策探讨  

Discussion of Development Countermeasures of Ultra-Low Permeability Chang8 and Chang6 Reservoirs in Ordos Basin

作　　者：万晓龙[1] 赵继勇[1,2] 李书恒[1] 何永宏[1] 张奎[1] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院 [2]中国科学院地质与地球物理研究所

出　　处：《低渗透油气田》2007年第3期94-99,共6页

摘　　要：鄂尔多斯盆地长8、长6超低渗油藏岩性致密，储、隔层岩石力学性质差异小，不利于控制储层压裂缝高，应力敏感性强，启动压力梯度高，难以建立有效的压力系统。针对该类储层特征．通过理论研究和现场试验探讨了开发对策：油井压裂与注水同期进行，可避免压裂裂缝高度失控，实现储层有效改造；五点井网可以建立有效的压力驱替系统，提高超低渗油藏的单井产量。Ordos Basin ultra-low permeability Chang8 and Chang6 reservoirs lithology, certificates, interlayer small differences in the nature of rock mechanics, not conducive to control cracks in reservoir pressure, the stress-sensitive, high start-up pressure gradient, it is difficult to establish an effective pressure system. Against such reservoir characteristics, through theoretical studies and field tests on the development of responses： fracturing and water injection wells over the same period, can avoid the high degree of fracturing cracks lost control and the effective realization of reservoir; Five wells net can establish an effective pressure displacement system, the uhra-low permeability reservoirs single well production.

关 键 词：鄂尔多斯盆地 延长组 超低渗油藏 开发对策 井网形式 压裂时机 

分 类 号：TE348[石油与天然气工程—油气田开发工程] P618.130.2[天文地球—矿床学]