中国石油大学学报（自然科学版）2017，Vol.41Issue(2)：1-11,11.DOI:10.3969/j.issn.1673-5005.2017.02.001
牛庄洼陷西南部沙三中亚段浊积岩储层成岩作用与物性演化
Diagenesis and physical properties evolution of turbidite reservoirs in Es3z of Niuzhuang sag, Dongying Depression
摘要
Abstract
A comprehensive analysis was conducted to evaluate the diagenesis and property evolution of Es3 z in Niuzhuang sag,by combining core observation,thin section identification,image analysis,fluid inclusion analysis,carbon and oxygen isotope analysis and physical property test.The burial,thermal and hydrocarbon charging history of the reservoirs were also taken into consideration.The results show that the turbidite reservoirs of Es3 z are characterized with low porosity and permeability,and may have experienced diagenetic environment changes through the sequence of weak alkaline,acidic,alkaline,and weak acidic conditions.With various diagenesis,the main dissolving-cementation sequence was:early siderite and calcite cementation;feldspar dissolution/quartz overgrowth/authigenic kaolinite precipitation;first hydrocarbon charging;ferrocalcite/ankerite cementation/quartz dissolution;second hydrocarbon charging;a small amount of feldspar dissolution/quartz overgrowth/pyrite cementation,and finally compaction existing throughout the whole burial history.According to the matching relation of reservoir physical properties and hydrocarbon accumulation,both conventional reservoirs and tight reservoirs coexisted in the turbidites,and the tight reservoirs could be further divided into two types,one became tight reservoirs during hydrocarbon accumulation and the other became tight before hydrocarbon accumulation.It is concluded that the best exploration targets are the conventional reservoirs followed by reservoirs becoming tight during hydrocarbon accumulation,and then the reservoirs becoming tight before hydrocarbon accumulation.关键词
成岩作用/成岩演化/物性演化/浊积岩/牛庄洼陷Key words
diagenesis/diagenetic evolution/physical properties evolution/turbidite/Niuzhuang sag分类
能源科技引用本文复制引用
张少敏,操应长,王艳忠,杨田,王尉,王思佳..牛庄洼陷西南部沙三中亚段浊积岩储层成岩作用与物性演化[J].中国石油大学学报（自然科学版）,2017,41(2):1-11,11.基金项目
国家科技重大专项(2011ZX05006-003) （2011ZX05006-003）
国家自然科学基金石油化工联合基金重点项目(U1262203) （U1262203）
中央高校基本科研业务费专项(15CX06009A) （15CX06009A）
