低孔低渗储集层探井低伤害压裂技术研究与应用  

Low damage fracturing technology for explo-ration wells in low porosity and permeability reservoirs

作　　者：杨丙秀 蒋廷学[2] 丁云宏[3] 汪永利[3] 王世召[4] 

机构地区：[1]中国石油勘探与生产公司 [2]中国科学院渗流流体力学研究所 [3]中国石油勘探开发研究院廊坊分院 [4]中国石油天然气股份有限公司

出　　处：《石油勘探与开发》2005年第2期119-122,共4页Petroleum Exploration and Development

基　　金：国家"十五"科技攻关项目"大中型油田勘探开发关键技术研究"(2003BA613A 07)课题"低渗透油田增产关键技术研究"的部分成果

摘　　要：水力压裂有助于正确、快速评价低孔低渗储集层的特性。但这类储集层对外来液体非常敏感,如果压裂设计或施工不当容易造成伤害,将影响正确认识储集层。从最大限度地认识与评价低孔低渗储集层的角度,针对探井压裂与开发井压裂的不同,在综合分析塔里木、华北、吉林、青海、玉门及长庆等探区对探井低孔低渗储集层压裂成败的基础上,提出探井低伤害压裂技术体系:与伤害相关的室内实验与分析评价;新型低伤害压裂材料研制;低伤害压裂工艺设计技术;配套的低伤害工艺措施。该技术体系在国内重点探区的现场试验取得了理想效果,2003年对华北油田留西探区深层低丰度油藏探井路45井低孔、特低渗、低电阻率油层进行压裂试油,使该探区近年来获得首次突破。The evaluation of the characteristics of the formation may be incorrect because of the formation damage caused by improper fracturing design and treatment. In order to broaden the knowledge and evaluation of low porosity and low permeability formations, low damage fracturing technology is put forward on the base of comprehensive analyses of fracturing experiences in exploration zones as Tarim, Huabei, Jilin, Qinghai, Yumen and Changqing Oilfield, etc. The highlight of the new fracturing technology lies in laboratory test and analytical technique related to damage, development of low damage fracturing materials, low damage technology design method and low damage of corresponding measures. Well Lu-45 in the low porosity, ultra-low permeability and low resistance formation of Liuxi exploration zone, Huabei Oilfield, was hydraulically fractured using the new fracturing technology in year 2003, which brought the first breakthrough in Liuxi exploration zone for the past decades.

关 键 词：探井 压裂 低伤害 优化 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]