准东阜东斜坡区齐古组砂岩成岩作用研究  

Diagenesis of sandstone reservoirs of Qigu Formation in Fudong slope area, eastern Junggar Basin

作　　者：蒋艳霞[1] 文华国[1] 张航[2] 刘亚鹏[1] 李云[1] 靳军 

机构地区：[1]成都理工大学沉积地质研究院,成都610059 [2]中国石油西南油气田分公司川东北气矿,四川达州635000 [3]中国石油新疆油田分公司实验检测研究院,新疆克拉玛依834000

出　　处：《岩性油气藏》2015年第6期78-86,131,共10页Lithologic Reservoirs

基　　金：中国石油新疆油田分公司项目"准东阜东斜坡区侏罗系齐古组储层精细研究"(编号:2013-C4039)资助

摘　　要：侏罗系岩性油藏是准噶尔盆地阜东斜坡区非常重要的原油产层,探索储层主要成岩作用类型对该区齐古组油气勘探及开发具有重要意义。利用铸体薄片、扫描电镜、X射线衍射、阴极发光、镜质体反射率和物性分析等资料,对阜东斜坡区侏罗系齐古组砂岩成岩作用及其对储层物性的影响进行了研究。该区齐古组砂岩储层岩石类型主要为岩屑砂岩,其次为长石岩屑砂岩;成分成熟度较低,结构成熟度较高;主要成岩作用类型包括压实作用、胶结作用以及溶蚀作用,成岩演化阶段已达到中成岩阶段A期。其中,建设性成岩作用主要包括部分绿泥石和伊利石包膜胶结作用和溶蚀作用,破坏性成岩作用主要包括压实作用以及方解石、凝灰质、方沸石和硅质胶结作用。该研究成果为进一步的岩性-地层油藏的储层预测提供了依据。Jurassic lithologic reservoir is the main exploration layer in Fudong slope area of eastern Junggar Basin, so it is significant to study reservoir diagenesis for oil and gas exploration and development. Based on the analysis of thin sections, scanning electronic microscope, X-diffraction, cathodoluminescence, vitrinite reflectance and physical properties, the diagenesis and its influence on reservoir quality of Qigu Formation in Fudong slope area were detailly studied. The result shows that the sandstone reservoirs are mainly lithic sandstone, followed by feldspar lithic sandstone,which have low compositional maturity and high textural maturity. The main types of diagenetic include compaction,cementation and dissolution, and the diagenetic phase reached the middle diagenetic stage A. Among them, constructive diagenesis includes parts of chlorite envelope and illite envelope cementation and dissolution, while destructive diagenesis mainly includes compaction, multi-phase intense calcite cementation, tuffaceous cementation, siliceous cementation and analcime cementation. This study could provide reference for the reservoir prediction of lithologicstratigraphic reservoirs.

关 键 词：砂岩储层 成岩作用 齐古组 阜东斜坡区 

分 类 号：P588.2[天文地球—岩石学]