低渗透储层气测与液测应力敏感性试验对比分析  

Contrast analysis research of the low permeability reservoir stress sensitivity test by using gas and liquid

作　　者：欧阳传湘[1,2] 张昕[1,2] 承宁[3] 刘杨[3] 

机构地区：[1]油气钻采工程湖北省重点实验室,湖北荆州434023 [2]长江大学石油工程学院 [3]中国石油新疆油田公司勘探开发研究院

出　　处：《石油地质与工程》2011年第4期128-130,10,共3页Petroleum Geology and Engineering

摘　　要：以新疆某低渗油藏岩心为研究对象,分别利用氯气和模拟地层水进行了应力敏感性试验,得出了该储层的渗透率损害率,并对两种测量方式进行了对比研究。试验结果表明,渗透率越低的区块越有可能发生渗透率损失,而且其损失是不可逆的;液测和气测渗透率虽然有一定的偏差,但总体上基本一致。对低渗透油田进行应力敏感性的研究是必要的;对于渗透率较低而要求试验的最大围压值较大的区块,可以考虑用气测代替液测评价。The cores of a Xinjiang low permeability reservoir are used as the research object,which are tested for stress sensitivity by using Nitrogen and simulative formation water.The reservoir permeability harm rate has been obtained and a comparative study with such two measurement methods has been taken.Experimental results show that the lower the permeability of the block is,the more the permeability loss likely to occur,and the loss of permeability is irreversible; the two measurement methods overall basic agreement while they have a certain deviation.Therefore,in the process of the low permeable oilfield development,it is necessary to do the stress sensitivity research,and replace liquid with gas when it requires reaching a greater pressure in stress sensitivity evaluation experiment of a low permeability reservoir.

关 键 词：低渗透储层 应力敏感性 渗透率损害率 有效应力 

分 类 号：TE311[石油与天然气工程—油气田开发工程]