裂缝性储层岩石自吸水性实验研究  

Experimental study on the hydroscopicity of fracture reservoir

作　　者：齐银[1] 张宁生[1] 任晓娟[1] 魏金星[2] 张存厚[2] 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]青海油田分公司,甘肃敦煌736200

出　　处：《西安石油大学学报（自然科学版）》2005年第1期34-36,共3页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：中国石油天然气集团公司青海油田分公司资助项目

摘　　要：通过岩心自吸水实验研究 ,表明南翼山某区块裂缝性储层有强的自吸水能力 ,吸水速度快 ,在2 0h内即可达到较高的自吸水饱和度 ,终吸水饱和度平均为 5 4.5 % ,终吸水驱油效率平均为 37% ;且黏土矿物含量越高 ,吸水量越多 ,岩心膨胀越严重 ,平均体积膨胀 4 .5 % .自吸水后对储层渗透率伤害严重 ,平均可达到 81.8% .因此 。The water-intake capacity of the fracture reservoir in some tract in Nanyishan is experimentally studied. It is shown that, the fracture reservoir has high water-intake speed, it can reach to higher water saturation within 20 h, and final average water saturation is 54.5%; final average hydroscopicity displacement efficiency is 37%; the higher the clay mineral content in the reservoir, the greater the water-intake quantity increases and the more the increase of the volume of the cores; the average volumetric expansion rate of the cores is 4.51%; hydroscopicity has serious damage to reservoir permeability, and the permeability reduces by 81.87% on average. Therefore, water invasing into reservoir should be reduce as far as possible in the process of development.

关 键 词：自吸 裂缝性储层 水侵 储层渗透率 水驱油效率 岩心 区块 黏土矿物 岩石 饱和度 

分 类 号：TE357[石油与天然气工程—油气田开发工程] P618[天文地球—矿床学]