深层煤层气压裂技术的研究与应用

Research and Application of Deep Coal Bed Methane Fracturing Technology

水力压裂是煤层气开采最有效的方式,延长矿区深层煤层气井的煤层深度达2000 m左右,由于煤层埋藏深和施工压力高等特点,压裂技术难度大,没有成熟的经验可以借鉴。介绍了延长矿区深层煤层气压裂技术,该压裂技术采用了活性水压裂液、大排量低砂比、脉冲加砂和复合支撑的思路,目前该技术已成功在延长的深层煤层气井上进行了2口井的现场压裂试验。

Hydraulic fracturing is the most effective way of coal bed methone（ CBM） exploitation,the depth of deep CBM well of the Yanchang Petroleum mining area is about 2000 m,by coal bed buried deep and construction pressure is high,fracturing technology is difficult,not mature experiences can be used. This paper introduces deep CBM fracturing technology of the Yanchang Petroleum mining area,the fracturing technology used water activity of fracturing fluid,large displacement sand ratio low pulse with sand and composite support ideas. At present,the technology has been successfully tested in 2 deep CBM wells of the Yanchang Petroleum mining area.