摘要
对东营凹陷下第三系深部碎屑岩储层成岩作用的影响因素进行了研究 ,结果表明 ,有机无机化学反应提供的酸性水介质环境和异常压力带流体的循环热对流是影响和控制深部碎屑岩储层成岩作用的重要因素。有机质热演化、粘土矿物转化、硫酸盐热化学氧化还原反应、油田水化学性质和烃类物质进入储层等因素引起地层水介质化学性质的变化 ,这严重影响了深部碎屑岩储层的成岩作用。循环热对流是深部储层流体的主要流动方式 。
Synthetic analysis of petroclastic rock in deep formation of Paleogene in Dongying sag show that acidic medium caused from organic-inorganic interactions and circulated convection current in abnormal high pressure formation are important factors influencing and controlling diagenesis. Changes of chemistry of formation water caused by thermal evolution of organic matters, transformation of clay minerals, thermochemical oxidation\|reduction reaction of sulphate, chemistry of water in oilfield and entrance of hydrocarbon to reservoir strongly influenced diagenesis of clastic reservoir in deep formation. As the main flow manner of formation water in deep reservoir, circulated convection current controlled authigenic mineral location and secondary pore distribution.
出处
《石油大学学报（自然科学版）》
CSCD
2000年第1期60-63,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
水介质性质
成岩作用
储层
碎屑岩
流动方式
deep formation reservoir
organic-inorganic interactions
fluid chemistry
circulated convection current
diagenesis
