页岩气水平井泵送桥塞射孔联作常见问题及对策

Common problems of pumping bridge plug and clustering perforation for horizontal shale gas well and countermeasures

刘祖林 杨保军 曾雨辰

LIU Zulin YANG Baojun ZENG Yuchen

中原石油工程有限公司井下特种作业公司，河南濮阳　457164 深圳市百勤石油技术有限公司，广东深圳　518054

Downhole Service Company of Zhongyuan Petroleum Engineering Co., Ltd., Puyang, Henan 457164, China Petro-king Oilfield Technology Ltd., Shenzhen, Guangdong 518054, China

泵送桥塞+ 射孔联作分段压裂近年来在国内外页岩气藏及致密气藏开发中广泛应用。在页岩气水平井泵送桥塞射孔联作分段压裂实践中遇到了泵送桥塞因压力高而不能泵送、桥塞坐封不丢手、桥塞坐封时电缆不点火、电缆点火后桥塞不坐封、射孔枪不响或2 簇射孔只射1 簇、连续油管射孔意外丢手等各种问题。针对所出现的问题进行原因分析，制定了防范措施和解决方案，现场实施后各页岩气井水平井段的压裂改造施工得以完成，所取得的经验和教训可供今后同类井施工借鉴和参考。

In recent years, the pumping bridge plug and clustering perforation technique has been widely used in staged fracturing of shale gas and tight gas reservoirs at home and abroad. In practical operations in horizontal shale gas wells, various problems have been found, such as failed pumping or release of pumping bridge plug due to high pressure, plug setting without cable igniting, plug not set after cable igniting, dumb shooting of the perforating gun or only 1 of 2 clusters shot, and accidental release in coiled tubing perforating. Based on cause analysis for these problems, appropriate preventive measures and solutions are proposed. They have been applied practically to facilitate the fracturing treatment of horizontal shale gas wells. The experiences and lessons thereof will be meaningful references for staged fracturing operations in similar wells.

10.13639/j.odpt.2014.03.019