Title

STEPPED HORIZONTAL DRILLING TECHNOLOGY

作者

冯志明颉金玲

Authors

Feng Zhiming Jie Jinling

单位

大港油田集团公司定向井技术服务公司, 天津大港 300280

摘要

阶梯水平井是在水平井完成第1水平靶区后,通过降斜、稳斜、增斜段的调整,进入并完成第2水平靶区井段的水平井钻井技术。该技术将水平井技术又推上了一个新的高度。使水平井的应用扩展到常规油气层,连续薄油层、断块油层等复杂油气田。文中从施工难点、优化工程设计、井眼轨迹控制3方面论述了阶梯水平井的钻井技术。列举了TZ406井、YX2P1井、LN61-H1井3口阶梯水平井的施工数据。针对TZ406井施工经过、施工要点、施工技术措施,对阶梯水平井的设计、轨道控制技术、施工难点经验、体会和认识,做了全面的论述。现场应用表明:阶梯水平井显著地增加了产量,大幅度地提高勘探开发的综合经济效益,必将成为油气田开发的重要手段之一。

Abstract

Stepped horizontal drilling technology, a method that realizes the hitting of 2 horizontal targets in a well, indicates a new stage in horizontal drilling. It involves the process of angle dropping, holding and building up before drilling into the second target interval. The application of this technology makes the horizontal drilling available for developing the conventional reservoir, continuous thin reservoir and such complicated reservoirs as fault-block reservoir. The paper mainly discusses the operation difficulties, drilling plan optimization and trajectory control, and gives the operation data of 3 wells for examples, e.g., well TZ406, YX2P1 and LN61-H1. In which, well TZ406 is detailed on its drilling plan, trajectory control technology, and drilling practice, etc. This technology greatly improves the production of horizontal well, and will be one of the important methods for oilfield developing in the future.

关键词：

水平井; 导向钻井; 井眼轨迹; 工程设计; 钻具组合;

Keywords:

horizontal well; navigational drilling; hole trajectory; engineering design; bottom hole assembly;

基金项目

DOI

10.3969/j.issn.1000-7393.2000.05.006

阶梯水平井钻井技术