深煤层CO_2泡沫压裂技术及适用性研究  

CO_2 Foam Fracturing Technology and Applicability in Deep Coal Seam

作　　者：王绪性[1] 郭布民[1] 袁征[1] 冯青[1] WANG Xu-xing;GUO Bu-min;YUAN Zheng;FENG Qing(Production Optimization R&D Institute,China Oilfield Service Limited,Tianjin 300459,China)

机构地区：[1]中海油田服务股份有限公司油田生产研究院,天津300459

出　　处：《煤炭技术》2019年第1期108-110,共3页Coal Technology

摘　　要：由于深部煤层(埋深大于1 000 m)埋藏深、渗透率较低、温度高、地应力高、储层力学性质复杂等特点,常规煤层气水力压裂技术开发深部煤层气具有一定的局限性。鉴于CO_2泡沫压裂液在煤层中滤失量小、黏度高、储层伤害低等优点,研究了CO_2泡沫压裂技术开采深部煤层气及其适用条件分析,可为下一步深部煤层气开发提供技术支撑。Because of the deep coal bed methane buried deeply(more than 1 000 meters depth), so the reservoir has low permeability, high temperature, high stress as well as the complex mechanical properties. Because of those, using conventional hydraulic fracturing technology to develop the deep coalbed has some limitations. CO2 foam fracturing fluid has little filtration, high viscosity and low damage in the coal seam reservoir. So the technique of CO2 foam fracturing in mining deep coal bed methane and its applicable condition analysis is studied, which can provide technical support for the next step of deep coal bed methane development.

关 键 词：深部煤层 CO2泡沫 煤层气 水力压裂 

分 类 号：P618.13[天文地球—矿床学] TE37[天文地球—地质学]