摘要
通过岩心及其岩石薄片、铸体薄片、扫描电镜和X-衍射等资料分析和沉积相研究,对准噶尔盆地阜东斜坡区头屯河组二段砂岩的成岩作用进行了系统研究,确定对储集层起破坏作用的成岩作用主要有压实、压溶和胶结作用,起建设性成岩作用的主要有溶蚀作用和早期黏土膜对石英次生加大及胶结物沉淀的抑制作用。综合分析成岩作用组合类型和演化序列,认为头屯河组二段砂岩的成岩演化主体处于早成岩B阶段晚期,部分进入中成岩A阶段早期。在建立成岩演化模式的基础上,划分出薄膜-孔隙型、富方解石胶结-孔隙型、富高岭石胶结-孔隙型、强压实和压溶型4种成岩相。成岩相类型受沉积微相、成岩流体性质及成岩流体活动性的控制,油气产能与成岩相类型有关。
By means of the core thin section, cast thin section, SEM and X-ray diffraction analyses and the sedimentary facies researches, it is indicated that the Toutunhe-2 member sandstone reservoir in Fudong slope area of Junggar basin underwent destructive compaction, pressolution and cementation, as well as constructive inhibition effect of early edge-distributed clay film on quartz secondary overgrowth and cement precipitation during its diagenesis. From analysis of diagenesis types and evolutionary sequence, it is considered that the major diagenetic evolulion of the reservoir is in the late of diagenetic Stage-B, partial in the early of diagenesis Stage-A. Also, on the basis of establishment of diagenetic evolution model, such 4 types of diagenetic facies are classified as film-pore type, rich calcite cemented-pore type, rich kaolinite cemented-pore type and strong compaction-pressolution type. They are all controlled by sedimentary micorfacies, diagenetic fluid property and activity, and the oil-gas productivity here is related to the diagenetie facies types.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第1期10-13,共4页
Xinjiang Petroleum Geology
关键词
准噶尔盆地
阜东斜坡区
头屯河组
储集层
成岩作用
成岩相
控制因素
Junggar basin
Fudong slope area
Toutunhe formation
reservoir
diagenesis
diagenetie facies
control factor
