储层屏蔽暂堵钻井完井液技术研究及应用  

RESEARCH ON RESERVOIR SHIELDING-TEMPORARY PLUGGING DRILLING-COMPLETION FLUID TECHNIQUE AND ITS APPLICATION

作　　者：李志刚[1] 乌效鸣[1] 郝蜀民[2] 熊汉桥[3] 邢振辉[2] 付胜利[4] 

机构地区：[1]中国地质大学 [2]武汉中国石化新星公司 [3]西南石油学院 [4]石油大学

出　　处：《天然气工业》2005年第3期74-78,共5页Natural Gas Industry

基　　金：中国石化集团公司"鄂北塔巴庙地区低压低渗砂岩气藏储层保护和压裂改造技术试验研究"项目(新星XYK2001-51)

摘　　要：鄂尔多斯北部塔巴庙地区的气藏是典型的低压低渗裂缝性砂岩气藏。该区储层具有孔隙度低、渗透率低或致密、储层压力低、毛细管压力高、有效应力高以及储层不均质性强、裂缝和微裂缝发育等特征,简称“三低两高一强”。储层损害机理以储层液锁损害、应力敏感损害以及水敏、盐敏损害等为主。文章在分析储层特征及其损害机理的基础上,研究出了适合塔巴庙地区储层特征的屏蔽暂堵钻井完井液技术。该技术在鄂尔多斯北部塔巴庙、杭锦旗等地区10多口探井、评价井及开发井中进行了现场试验,在储层保护和提高天然气单井产量等方面取得了显著效果。The gas reservoirs in Tabamiao region of North E' erduosi Basin are the typical fractured sandstone gas reservoirs with low formation pressure and low permeability. The reservoirs in this region are of the following characteristics: low porosity, low permeability or high compactability, low reservoir pressure, high capillary pressure, high effective stress, strong heterogentity and developed fractures and microfissures, etc. The formation damage mechanisms mainly include liquid locking, stress sensitivity, water sensitivity and salt sensitivity damages. On the basis of analyzing reservoir characteristics and formation damage mechanisms, a shielding-temperary plugging drilling-completion fluid technique suitable for the reservoir characteristics in Tabamiao area was developed by the authors. Through field tests in more than 10 exploration wells, appraisal wells and development wells in Tabamiao and Hangjingqi regions of North E'erduosi Basin, it was proved that the considerable results were achieved in reservoir protection and increasing gas production of single well by use of such a technique.

关 键 词：屏蔽暂堵 钻井完井液 储层特征 应力敏感 储层保护 储层损害 单井产量 鄂尔多斯 储层压力 孔隙度 

分 类 号：TE254[石油与天然气工程—油气井工程]