川东地区大斜度、水平井排水采气措施探讨  

MEASURES OF DRAINAGE GAS RECOVERY FOR HIGH-ANGLE HORIZONTAL WELLS, EASTERN SICHUAN BASIN

作　　者：梁兵[1] 朱英杰[1] 刘德华[1] 龚伟[1] 唐兴波[1] 程姣[1] 

机构地区：[1]中国石油西南油气田公司重庆气矿

出　　处：《天然气勘探与开发》2015年第4期48-51,12-13,共4页Natural Gas Exploration and Development

摘　　要：通过对已实施排水工艺措施井的生产动态分析,结合龙岗打孔气举的成功案例,建议采取分阶段逐步攻克难题的策略,提出先行解决悬挂封隔器之上的井筒矛盾,悬挂封隔器之下依靠气井自身能量将积液带至油套连通点,减缓井筒矛盾的技术思路,论证了在悬挂封隔器之上的油套环空实施排水采气的适应性,并推荐优先选择有一定剩余储量、地层能量相对充足、水平段相对较短、油套连通点至水平段最低点的垂深相对较小的气井,开展泡排及气举工艺现场应用试验。For some gas wells used drainage measures, their production performance was analyzed. Integrated with many successful examples of slotting gas lift from Longgang area, a suggestion to deal with problems existing in wellbore above a hold-down packer in advance was made. However, some problems occurring in wellbore below the hold-down packer may depend on well energy by itself to carry liquid to a connected point in tubing casing. In addition, the application of drainage gas recovery to tube-casing annular above the packer was demonstrated. Finally,we recommend that a technology of foam drainage and gas lift may be used in some gas wells with a certain remaining reserves, relatively abundant formation energy, shorter horizontal interval, and smaller vertical depth from connected point to the lowest of horizontal interval.

关 键 词：排水采气 大斜度井 水平井 悬挂封隔器 气举 泡排 

分 类 号：TE37[石油与天然气工程—油气田开发工程]