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碎屑岩储层次生孔隙形成机制及其勘探意义
Genetic Mechanism of Secondary Pores in Clastic Reseroir Rock and Its Exploration Significance
【摘要】 次生孔隙在我国陆相湖盆碎屑岩储层中占有很大比例,主要类型有粒间溶孔、粒内溶孔、铸模孔、胶结物内溶孔和裂缝等.通过研究认为次生孔隙的形成机制有4种:(1)与有机质热演化有关;(2)与大气水渗滤作用有关;(3)与深部地质作用有关;(4)与构造作用有关.寻找次生孔隙发育带的方向为:①晚成岩阶段A亚期为主、次为B亚期的砂岩段中.②沉积间断面附近.③有深大超壳断裂活动区.次生孔隙形成机制的研究对焉耆盆地,泌阳凹陷的油气勘探具有指导意义.
【Abstract】 The main types of secondary pores ’which is in large proportion to pores of elastic reservoir. rock deposited in the terrestrial lucastrine lakes in China include inter - granular pores, intra - granular pores, moldic pores and intra -cement solution pores. There are four types of genetic mechanism. thermal evolution of organic matter; infiltration of meteoric water, geologic activities in tile deep earth; and tectonic movement. The favorable areas for exploration of secondary pores are the following sandstone deposited during substage A or B of the late diagenetic stage, near sedimentary gaps, and zones with deep and large active translithospheric or lithospheric fractures. Research on the genetic mechanism of secondary pores 11as directive function to oil and gas exploration in Yanqi basin and Biyang depression.
【Key words】 terrestrial basin; elastic reservoir rock; secondary pelf e; mechanism; exploration significance;
- 【文献出处】 河南石油 ,Henan Petroleum , 编辑部邮箱 ,2001年02期
- 【分类号】P618.13
- 【被引频次】35
- 【下载频次】402