摘要
二连盆地高力罕凹陷下白垩统地层勘探程度低,储层成岩作用等内容研究相对薄弱,在一定程度上制约了该区下一步有利储层的优选。本文通过薄片鉴定、扫描电镜、粘土矿物X衍射等方法对高力罕凹陷下白垩统碎屑岩所经历的成岩作用类型及其对储层物性的控制作用进行了深入研究。结果表明,研究区成岩作用类型主要包括压实作用、胶结作用、交代作用以及溶解作用等。其中压实作用、胶结作用以及交代作用均属于破坏性成岩作用,而溶解作用属于建设性成岩作用。压实作用是使储层物性变差的根本原因,碳酸盐矿物、粘土矿物以及硅质的胶结作用使储层物性进一步变差,而溶解作用是改善研究区储层物性主要的成岩作用类型,但发育程度相对较低。
The exploration of favorable areas of reservoir of the lower cretaceous of Gaolihan depression in Erlian Basin is limited to some extent by the low degree of exploration and the relatively weak research of reservoir diagenesis. Based on the thin section identification, scanning electrion microscopy and X diffraction of clay minerals, types of diagenesis were researched as well as its effect on physical properties of clastic reservoir of the lower cretaceous of Gaolihan depression. The results show that the main types of diagenesis include compaction, cementation, metasomatism and dissolution. Compaction is the basic reason to make the physical property become bad; the cementation of carbonate minerals, clay mineral and siliceous make the physical property become worse, which all belong to destructive diagenesis;while the dissolution can improve the physical property, but degree of development is low.
作者
池继立
CHI Ji-li(Shaanxi Yanchang Petroleum Group Oil and Gas Exploration Company, Shaanxi Yan＇ an 716099, China)
出处
《辽宁化工》
CAS
2016年第9期1224-1226,共3页
Liaoning Chemical Industry
基金
国家自然科学基金项目
项目号:No.41502132
关键词
二连盆地
高力罕凹陷
下白垩统
成岩作用
物性
Erlian Basin
Gaolihan depression
Lower Cretaceous
diagenesis
physical property
