石油钻采工艺Issue(4)：9-11,3.DOI:10.13639/j.odpt.2015.04.003
导眼与扩眼组合钻进模式在定向井轨迹控制中的应用
Application of combined drilling mode of pilot hole & reaming in the control of directional well trajectory
梁奇敏 1刘新云 1石李保 1陶冶 1李令东 1胡贵1
作者信息
- 1. 中国石油勘探开发研究院工程技术研究所，北京 100083
- 折叠
摘要
Abstract
Directional wells are affected by a number of factors. Their actual drilling trajectory sometimes is not along the designed track, posing great challenge to drilling operation. This paper does not take into account the inlfuencing factors like formation properties, drilling parameters and wellbore trajectory, but uses simple and practical formula which also satisifes the engineering requirement to calculate and analyze the theoretical geometric build-up rate by combination of single-bend, monostable screw drill assembly. The paper studies the effect of wellbore and drillstring size on the build-up rate and ifnds that high build-up rate can be obtained more easily in small hole than in large hole under the same conditions. Hence, it is suggested that a small hole may be drilled ifrst where high build-up rate is required, then reaming to the designed size with the combined drilling mode. Take Well X as an example, in directional wells where borehole trajectory is hard to control, the combined drilling mode can meet the engineering requirement, reduce drilling costs and shorten drilling cycle. The research results provide theoretical guide and reference for the design of wellbore conifguration and control of directional well trajectory.关键词
导眼/扩眼/定向井/造斜率/轨迹控制/钻井Key words
pilot hole/reaming/directional well/build-up rate/trajectory control/drilling分类
能源科技引用本文复制引用
梁奇敏,刘新云,石李保,陶冶,李令东,胡贵..导眼与扩眼组合钻进模式在定向井轨迹控制中的应用[J].石油钻采工艺,2015,(4):9-11,3.
