吉林省梨树地区致密碎屑岩压裂地质因素分析  

Analysis of geological factors affecting fracturing effects in dense clastic rocks in Lishu area,Jilin Province

作　　者：王娟娟[1] 董传瑞 WANG Juanjuan;DONG Chuanrui(Petroleum Engineering Environmental Protection Technology Research Institute,Northeast Oil&Gas Branch of SINOPEC,Changchun 130062,China)

机构地区：[1]中国石化东北油气分公司石油工程环保技术研究院,长春130062

出　　处：《世界地质》2022年第4期834-841,共8页World Geology

基　　金：中石化集团公司科技部项目(P21104)。

摘　　要：为提高吉林省梨树地区气井压裂增产效果,笔者对压裂井回顾总结,将压裂裂缝还原至地质环境中,以定量求取影响压裂效果的地质参数。结果表明梨树地区3000 m以下储层需要大规模压裂改造才能获得产能突破;压裂裂缝与地层倾角派生的法向、切向应力是影响压裂裂缝形态和改造效果的定量地质因素;在复杂构造带出现的压裂差异,导致压后气井产能差异较大。To improve the fracturing effects of gas wells in Lishu area,Jilin Province,the authors reviewed and summarized the fractured wells,and restored the hydraulic fractures to the geological environment to quantify the geological parameters affecting the fracturing effects.The results show that the reservoir below 3000 m in Lishu area needs large-scale fracturing stimulation to obtain productivity breakthrough.The normal and tangential stress on the hydraulic fracture derived from the stratigraphic dip are the quantitative geological factors affecting the fracture morphology and stimulation effects.Differences in hydraulic fracture morphology in complex tectonic zones result in great changes in post-fracturing productivity of gas wells.

关 键 词：压裂改造 地层倾角 复杂构造带 梨树地区 吉林省 

分 类 号：P618.13[天文地球—矿床学] TE371[天文地球—地质学]