三种排水采气新工艺实用性探讨  

Practical Discussion on Three New Drainage Gas Recovery Techniques

作　　者：白树强[1] 徐兴恩 赵健光[3] 刘安琪[4] 魏纳[4] 李悦钦[4] 

机构地区：[1]中国石油大港油田第六采油厂,河北黄骅061100 [2]中国海油上海分公司,浙江宁波315800 [3]中国石化中原油田采油二厂,河南范县457532 [4]西南石油大学,四川成都610500

出　　处：《天然气技术》2009年第1期41-43,共3页NATURAL GAS TECHNOLOGY

基　　金：四川省科技攻关计划(中俄合作)项目(编号:05GG021-021)资助

摘　　要：国内外气藏大多属于封闭性的弹性水驱气藏,在开发过程中都不同程度地存在地层出水,产出水若不能及时排出会使得气井产量降低,严重时还会对地层造成极大的污染和伤害,快速有效地排液复产是保持气井产能、高效开发气田的关键。近年来石油工作者通过科研攻关已开发出一系列新的排水采气工艺,如气体加速泵技术、单管球塞连续气举工艺、分体式柱塞气举等。综述并比较上述新工艺的原理、应用现状、优缺点,根据开发实例进行了探讨,得出了规律性认识,即气体加速泵适合用于具有一定自喷能力的产水气井。在气举排水井实施气体加速泵排水后,能明显降低注气压力和注气量及提高气举排水效率;单管球塞连续气举工艺显著降低了气举过程中的液相滑脱损失和井底流动压力,增大了气井生产压差并提高了气井产量;分体式柱塞气举工艺技术的最大优势是节省了普通柱塞气举所需的关井时间,可以连续作业。通过对比,为排水采气工作指明了新的发展方向。Most gas reservoirs in the world belong to closed and elastic water-flooding reservoirs.So,there exists more or less formation water in their development.Gas output will decrease and what's more the formation will be polluted and damaged greatly if produced water is not discharged in time.So,both rapid unloading and effective recovering are important to stabilize well productivity and develop effectively.In recent years,petroleum engineers have developed a series of new drainage gas recovery techniques,such as gas-accelerating pump,continuous pig gas-lift and partial plunger gas-lift.Eventually the principles,application,advantage and disadvantage of new techniques have also compared and discussed based on several development examples.

关 键 词：排水采气 新工艺 采收率 

分 类 号：TE377[石油与天然气工程—油气田开发工程]