石油钻采工艺Issue(4)：1-16,16.
页岩气储层伤害30年研究成果回顾
Review to shale gas formation damage for 30 years ZHENG Lihui1, 2, WEI Panfeng1
摘要
Abstract
The current researches on shale gas formation damage derive from the conventional theory of sandstone reservoir and carbonate rock reservoir. To review the researches of shale gas formation damage, factors affecting penetration ability were focused on. It was thought that the internal factors have mainly been recognized as listed below:the low-permeability leads to water block;the high content of clay tends to swell and block channels;shale surface capillary force increases resistance to gas lfow;the conditions of high temperature and high pressure do harm to the performance of working lfuids and easy to increase the reservoir lfuids residual;the CO2 lfow contaminates the working lfuids and increases the residual. While the external factors of formation damage include the following items:the swell of clays caused by the insufifcient inhibition ability of working lfuids;the invasion and residual of working lfuids as well as the additives;the bioiflms generated by working lfuids obstruct gas lfow in reservoir;and the liquid volatilization speed around the borehole is too low to prevent water blocking and causes channel blocking, which results from low production pressure. The mechanisms of the formation damage during desorption and diffusion process in shale gas has not been systematically researched as well as the effects of different processes such as drilling and completing, reservoir stimulation and drainage on desorption and diffusion capacity. The basic theory on the formation damage of the shale gas has not been established. Moreover, there is no agreed evaluation criterion on shale gas formation damage indoor and in the ifeld on shale gas.关键词
页岩气/储层伤害/渗透率/工作流体/解吸/扩散Key words
shale gas/formation damage/permeability/working lfuids/desorption/diffusion分类
能源科技引用本文复制引用
郑力会,魏攀峰..页岩气储层伤害30年研究成果回顾[J].石油钻采工艺,2013,(4):1-16,16.基金项目
中国石油科技创新基金“页岩气储层伤害机理研究”（编号2011D-5006-0207）资助。 （）
