莺歌海盆地X10区块黄流组储层特征及成因研究

Reservoir characteristics and genesis of Huangliu Formation in X10 block,Yinggehai Basin

本文综合利用常规物性测试、岩石薄片鉴定、重矿物分析、X衍射分析、扫描电镜等实验方法,对莺歌海盆地X10区块黄流组储层进行系统研究,结果表明:(1)储层主要为细-中粒长石岩屑砂岩,填隙物主要为沉积过程的泥质和成岩过程形成的碳酸盐胶结物;(2)储层物性主要为低孔低渗,成岩过程中强压实作用和大量自生矿物形成是造成储层物性变差的主要原因。

In this study,the Huangliu Formation reservoir in the X10 block of Yinggehai Basin was systematically studied through conventional physical properties,thin section observation,heavy mineral analysis,X-ray diffraction,and scanning electron microscopy.The results show that:(1)The reservoir is mainly composed of fine-medium feldspar lithic sandstone,and the interstitial fillings are mainly carbonate cements(formed during diagenetic processes)and clay(formed during sedimentary).(2)The petrophysical properties of the reservoirs are mainly low porosity and low permeability,and the main reasons for the deterioration of the overall petrophysical properties of the reservoirs are the strong compaction and the formation of abundant authigenic minerals in the diagenetic process.