致密砂岩气藏前置酸压裂技术应用研究  

Application study of pre-acid fracturing technology for tight sandstone gas reservoir

作　　者：唐勤 

机构地区：[1]中石化华北油气分公司石油工程技术研究院,河南郑州450006

出　　处：《石油化工应用》2017年第5期38-42,共5页Petrochemical Industry Application

基　　金：国家科技重大专项"低丰度致密低渗油气藏开发关键技术";项目编号:2016ZX05048

摘　　要：大牛地气田经过多年的开发,目前开发区的储层物性条件越来越差,常规加砂压裂技术有效动用储层的难度越来越大。本文针对大牛地气田致密砂岩气藏低孔、低渗、低压,黏土矿物含量高的特点,通过前置酸酸液与岩石之间的相互化学反应机理研究,结合现有压裂技术对其在致密砂岩气藏压裂中的可行性展开研究,初步形成了一套前置酸压裂技术方法。现场试验表明,该项技术增产效果显著,具有较好的应用前景。After many years of development,the reservoir physical condition of development area of Daniudi gasfield is getting worse and worse,to develop reservoir effectively with conventional sand fracturing technology is more and more difficult.According to the characteristics of the tight sandstone gas reservoir in Daniudi gasfield such as low porosity,low permeability, low pressure and high clay mineral content,a set of pre-fracturing technology is formed with study on the mechanism of chemical reaction between lead acid and rock and study on the feasibility of fracturing in tight sandstone gas reservoir with existing fracturing technology.It shows a good application prospects and remarkable effect on increasing gas production by tests of using this technology in the field test.

关 键 词：大牛地气田 致密砂岩气藏 黏土矿物 前置酸压裂 

分 类 号：TE377[石油与天然气工程—油气田开发工程]