东北含油气盆地储层次生孔隙形成机制  

Development Mechanism of the Secondary Pores in the Oil gas Reservoirs of Northeastern Basins of China

作　　者：王海云[1] 李捷[1] 

机构地区：[1]大庆石油学院石油勘探系

出　　处：《大庆石油学院学报》1998年第4期5-8,共4页Journal of Daqing Petroleum Institute

基　　金：黑龙江省自然科学基金;大庆石油学院自然科学基金

摘　　要：次生孔隙在东北含油气盆地深部储层中占有很大比例．通过对二连、海拉尔、松辽等东北主要含油气盆地储层成岩和孔渗资料研究，总结出其次生孔隙形成机制主要有４种：１）与泥岩有机质热演化有关；２）与地表水和地下水的渗滤作用有关；３）与晚期火山活动有关；４）与构造作用和成岩作用有关．明确了东北深层寻找次生孔隙发育带的方向为：１）成岩强度为早成岩阶段Ｂ亚期和晚成岩阶段Ａ、Ｂ亚期的砂岩中；２）沉积间断面附近；３）地温较高地段岩浆热液影响附近；４）在致密砂岩。The secondary pores account for a great proportion in the late Jurassic to the early Cretaceous (J 3-K 1)reservoirs. Through researches of the diagenic data and pore/permeabiling data of the northeastern oil gas basins, we may clearly understand that the development mechanism may fall into 4 categories: the first one relates to the thermal evolution of organic matter in the mudstone;the second one to the infiltration of the surface and subfurface water;the third one to the late volcanism;and the fouth one to the tectonic movement and diagenesis The searching direction of the secondary pores of the deep zones in the northeast of China are as follows:1 the medium grade of the diagenic intension in the sandstones between substage B of the early diagenesis and A and B stages of the late diagenesis;2 adjacent to the break plane;3 adjacent to the influence of hydrothermal magma in the intervals with higher temperature;4 searching for the development of fissures in the compact sandstones,mudstones and base rocks.

关 键 词：东北 含油气盆地 次生孔隙 储集层 油气藏 

分 类 号：P618.130.2[天文地球—矿床学]