低渗透油气井排液技术综述  

Summary of Draining Techniques in Low-permeability Well

作　　者：姚展华 杨姝蔚[2] 胡书博[3] 任秋军 赵庆杰 陶立达 王晓磊 

机构地区：[1]渤海钻探工程有限公司井下技术服务分公司,天津300283 [2]大港油田公司勘探开发研究院,天津300283 [3]大港油田公司第五采油厂,天津300283

出　　处：《石油矿场机械》2013年第4期78-82,共5页Oil Field Equipment

摘　　要：对于低渗透油气藏,由于其储层压力低,或者高压低渗等特点,大部分井射孔后或压裂后都不能够依靠地层能量实现持续自喷。为了避免损害储层,诱导自喷,需及时排出井筒积液。由于产量低,必须采用低成本、易操作的排液工艺。经过多年的研究,已开发出抽汲排液技术、水力泵排液技术、注液氮诱喷技术等。介绍了这些技术的原理和特点,为合理选择排液技术,实现安全、环保、经济地开发低渗透油气藏提供指导。Due to its small pores,fine throats,low permeability,and high capillary pressure,most wells in reservoirs with low formation pressure and low permeability can not produce by their own energy. If the intrusive foreign fluid can not be drained out timely,it will deepen the damage to the reservoir and reduce the percolating capacity. Therefore,how to discharge wellbore fluids quickly becomes an extremely important issue. To solve the problem, we have to apply draining techniques with low cost and easy operation,considering the total cost. A number of draining techniques such as swabbing,jet pump drainage and liquid nitrogen drainage have been developed over the years with their own advantages. In this paper, a discussion was made on the advantages and disadvanta- ges of draining techniques currently used in China and an instruction on the choosing of such tech niques was made as well in the development process of low permeability oil fields.

关 键 词：低渗透油气藏 排水采油 技术 

分 类 号：TE935[石油与天然气工程—石油机械设备]