CAJ | 학술논문

通过普通薄片、铸体薄片、扫描电镜、X-射线衍射分析,对昆北油田切6井区E1＋2和E31砂岩储层成岩作用类型、演化阶段、演化序列及储层物性的影响因素进行了研究。结果表明：E1＋2和E31砂岩处于中成岩阶段A亚期的末期,成岩作用类型主要有压实作用、胶结作用、溶蚀作用、交代作用、破裂作用;较强的压实作用、石英次生加大、方解石及硬石膏等矿物的胶结作用是使储层物性变差的重要因素;长石、岩屑和方解石胶结物的溶蚀作用以及砂岩破裂作用使储层物性得到改善。
통과보통박편、주체박편、소묘전경、X-사선연사분석,대곤북유전절6정구E1＋2화E31사암저층성암작용류형、연화계단、연화서렬급저층물성적영향인소진행료연구。결과표명：E1＋2화E31사암처우중성암계단A아기적말기,성암작용류형주요유압실작용、효결작용、용식작용、교대작용、파렬작용;교강적압실작용、석영차생가대、방해석급경석고등광물적효결작용시사저층물성변차적중요인소;장석、암설화방해석효결물적용식작용이급사암파렬작용사저층물성득도개선。
Based on the analysis of ordinary thin sections, cast thin sections, scanning electron microscope and X-ray diffraction, this paper studied the diagenesis types, evolutionary phase, evolutionary series and influencing factors of reservoir properties of E1＋2 and E31 in Qie 6 well area of Kunbei Oilfield. The result shows that the sandstone of E1＋2 and E31 is in the late stage of middle diagenetic stage A, and the main diagenesis types are compaction, cementation, dissolution, metasomatism and cataclasis. The experienced compaction, quartz secondary enlargement and cementation of calcite and anhydrite are the main destructive factors of reservoir properties, while the dissolution of feldspar, detritus and calcite and cataclasis are the constructive factors of reservoir properties.