钻井用四相分离器的现状及发展趋势

Present status and developing trend of four-phase separators used for drilling

钻井用四相分离器(地面密闭分离系统)是实施欠平衡钻井作业所必配的装备,目前该分离系统在国外已被广泛使用。为在国内推广应用欠平衡钻井技术,介绍了国外VETERAN能源公司、哈里伯顿和威德福公司所研制的钻井用四相分离器结构及原理,阐明了它们的应用范围和技术特点,同时还介绍了中国石油川庆钻探工程公司钻采工程技术研究院研制的WS2×8-1.5/1型四相分离器,分析了国内外四相分离器的设计差异和应用情况。强调了研制和使用钻井用四相分离器的必要性和其在未来欠平衡钻井作业中的重要性。

The four-phase separator,the so-called ground airtight separating system,is one of the necessary equipments for the underbalanced drilling operation and it has been widely used at abroad.In view of this,this paper introduces the structure and principles of four-phase separators respectively made by the Canadian Veteran Energy,Halliburton,and Weatherford companies,as well as their applicable range and technical features.However,China just started to research and develop such four-phase separators used for drilling.This paper hereby introduces the WS2×8-1.5/1-type separator developed by the Drilling and Production Technology Research Institute of CNPC Chuanqing Drilling Engineering Co.,Ltd.In addition,the differences in the design and application between foreign and domestic separators are also presented.In the end,this paper emphasizes the necessity of studying and using four-phase separators for drilling especially the underbalanced drilling operations.