摘要
马东东地区深部储层物性影响因素分析结果表明,沉积环境、成岩作用和异常超压的形成与分布是影响本区深部储层物性的主要因素.其中,沉积环境对深部储层物性的影响主要表现为岩石组分、结构和沉积相带对储层物性的影响,成岩作用中的铁白云石沉淀和硅质增生是导致深部储层物性变差的重要因素,沉积物中有机质的大量生烃以及粘土矿物在转化过程中所释放出的酸性水的溶解作用是产生大量次生孔隙的重要因素,而深部异常超压的存在是部分原生孔隙和次生孔隙得以保存的重要条件.
Deposition environment, diagenesis and abnormal high pressure are the main factors to control petrophysical properties of deep reservoir in Madongdong area. For deposition environment, rock composition and texture and sedimentary facies could affect deep reservoir petrophysics, and siliceous enlargement and ferrodolomite precipitation during diagenesis have reduced porosity and permeability of deep reservoir. The dissolution of organic acid produced in wide hydrocarbon generation and transformation of clay minerals may produce substantial secondary porosity in reservoir, and the existence of deep abnormal high pressure is a crucial requirement for partial original porosity and secondary porosity to be preserved.
出处
《中国海上油气（地质）》
2003年第2期104-107,共4页
China Offshore Oil and Gas(Geology)
关键词
马东东地区
深部储层
物性
影响因素
沉积环境
成岩作用
异常超压
油气藏
Madongdong area
petrophysical properties of deep reservoir
deposition environment
diagenesis
abnormal high pressure
