测井技术2023，Vol.47Issue(6)：717-725,9.DOI:10.16489/j.issn.1004-1338.2023.06.010
基于电成像测井的深层页岩气储层裂缝特征及其与构造演化的关系
Fracture Characteristics of Deep Shale Gas Reservoirs and Their Relationship with Tectonic Evolution Based on Electric Imaging Logging
摘要
Abstract
In order to find out the relationship between fractures and tectonic evolution in deep shale gas reservoirs,this paper makes full use of electric imaging logging data,core and geochemical data to study the types,occurrence characteristics,formation periods and the relationship between structural evolution and structural fracture in deep shale gas reservoir of L20X well in Luzhou,south Sichuan.The results show that,first the structural fractures can be divided into cross-layer shear fractures,intra-layer tension fractures,bedding detachment fractures,composite fractures,and structural pressure-soluble suture lines.The structural joints that can be identified by electric imaging logging data are high resistance joints,high guide joints and fault joints,and the high resistance joints and high guide joints are mostly through-layer shear joints.Second,the formation of tectonic fractures is mainly influenced by three phases of tectonic movement:during the Indochinese period,the shear fractures in the NEE section and the faults in the NWW section developed due to the NNW stress compression.The NNE shear fractures and NEE faults were developed in the late and early mountains of Yanshan due to SEE compression.Due to NEE compression,NW shear fractures and NNE faults developed in the middle and late mountains.The fracture strike occurrence of NEE,NNE,NW,which is closely related to the third-stage tectonic movement,is the structural record left by the third-stage tectonic movement in the stratum.This study indicates that the electric imaging logging data provide basis for the analysis of the sub-evolution of the tectonic period.关键词
电成像测井/深层页岩气/裂缝/构造期次/构造演化/剪切缝/断层Key words
electric imaging logging/deep shale gas/fracture/tectonic stage/tectonic evolution/shear fracture/fault引用本文复制引用
张轩昂,闫建平,廖茂杰,钟光海,郭伟,黄毅..基于电成像测井的深层页岩气储层裂缝特征及其与构造演化的关系[J].测井技术,2023,47(6):717-725,9.基金项目
国家自然科学基金项目"低电阻率页岩气储层:成因机制差异及含气饱和度模型研究"(42372177) （42372177）
中国石油-西南石油大学创新联合体科技合作项目"川南深层与昭通中浅层海相页岩气规模效益开发关键技术研究"(2020CX020000) （2020CX020000）
四川省自然科学基金项目"页岩气储层低电阻率成因机制及对含气性的影响研究"(2022NSFSC0287) （2022NSFSC0287）
西南石油大学国家级创新训练项目"深层页岩气地层裂缝发育因素及测井定量评价方法"(202210615010) （202210615010）
高等学校学科创新引智计划(111计划)"深层海相页岩气高效开发学科创新引智基地"(D18016) （111计划）
