闭合酸压技术在川东北气田的研究与应用  

APPLICATION OF CLOSED ACID FRACTURING TO NORTHEASTERN SICHUAN GASFIELD

作　　者：屈静[1] 林立世[1] 杨永华[1] 张磊[1] 杨衍东[1] 

机构地区：[1]中国石化西南油气分公司工程技术研究院

出　　处：《天然气勘探与开发》2010年第2期47-50,共4页Natural Gas Exploration and Development

摘　　要：酸压改造是川东北地区海相碳酸盐岩储层增储上产的重要手段。川东北海相碳酸盐岩储层具有的埋藏深、温度高、非均质性强、低孔低渗、部分地区高含硫等特点,使实施储层改造措施面临大量技术难题。为此,选用该地区储层岩心进行室内试验,优选出适合该地区的胶凝酸酸液体系;从实际情况出发,结合储层的具体特征,优选出适合该地区的闭合酸化工艺;并以一口典型井为例,证实了优选出的酸液体系及酸化工艺在该地区具有较好的适应性。Acid fracturing is an important tool to increase reserves and production of marine carbonate rock reservoir in northeastern Sichuan Basin.The reservoir is characterized by deep bury,high temperature,strong heterogeneous,low porosity and permeability,and rich H2S in some areas.So,it's very hard to have a reservoir reconstruction in view of technology.In this study,to chose some cores obtained from the marine carbonate rock reservoir;and then to take gelling acid suited for this area as an acid fluid;thirdly to optimize closed acid-fracturing technique also suited for this area;at last to apply the optimized acid fluid and closed acid-fracturing technique to one well.A better result has been achieved.

关 键 词：碳酸盐岩 胶凝酸 闭合酸压 

分 类 号：TE377[石油与天然气工程—油气田开发工程]