五段制井眼降斜段钻井提速关键技术分析  

Analysis on key technology of speed-increasing in drop section of slant well

作　　者：王建龙 刘学松 郑永峰 许京国 张雯琼 

机构地区：[1]中国石油集团渤海钻探工程技术研究院,天津300450 [2]中国石油集团渤海钻探第一钻井公司,天津300280 [3]中国石油集团渤海钻探第三钻井公司,天津300280

出　　处：《石油化工应用》2018年第2期15-18,共4页Petrochemical Industry Application

基　　金：中石油渤海钻探工程有限公司科技项目“潜山钻井工程设计优化与实施”项目资助,项目编号:2017ZD38Y-01

摘　　要：五段制井降斜段摩阻大,滑动钻进托压现象严重,导致滑动效率低。为此,本文分析降斜段技术难点,提出了"井斜角≥15°时采用水力振荡器+1.5°单弯螺杆进行主动降斜;井斜角<15°时采用"常规钻具+螺杆式液动冲击器"进行自然降斜段的提速技术,并在B16108井进行了现场试验。试验结果表明,该技术有效提高了降斜段机械钻速,提高降斜效率。本文的研究,为五段制井井眼降斜段钻井提速提供了有力的技术支持。In slant well, the friction is large and the sliding pressure is serious, which results in low sliding efficiency. In order to solve this problem, this paper analyzes the technical difficulties of the drop section, and puts forward that "hydraulic oscillator +1.5° single-curved screw" to reduce the inclination, when the inlination is more than 15°. And the conventional drilling tool +screw type hydraulic impactor is used for natural descent, when the inlination is less than 15°. And the field test is carried out.The test results show that the proposed key technology can effectively improve the ROP of the drop section and improve the down-slope efficiency. The research of this paper provides the technical support for the drilling speed-up of drop section of the slant wellbore.

关 键 词：五段制井 降斜段 托压 水力振荡器 液动冲击器 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]