大位移井轨道设计方法综述及曲线优选  

Summary and Optimization of Extended-Reach-Well Trajectory Design Methods

作　　者：宋执武[1] 高德利[1] 李瑞营[2] 

机构地区：[1]中国石油大学(北京)石油天然气工程学院,北京昌平102249 [2]大庆石油管理局钻探集团钻井工程技术研究院,黑龙江大庆163413

出　　处：《石油钻探技术》2006年第5期24-27,共4页Petroleum Drilling Techniques

基　　金：教育部"长江学者和创新团队发展计划"创新团队项目(批准号:IRT0411)资助

摘　　要：井眼轨道设计是大位移井的关键技术之一。在总结前人工作的基础上,推导出了圆弧、摆线、悬链线、修正悬链线、拟悬链线、侧位悬链线、抛物线的统一计算公式。对于相同的目标点,计算出了这些曲线的井眼长度、最大造斜率、造斜段长度、下钻摩阻、起钻摩阻、滑动钻进摩阻和旋转钻进摩扭,通过赋给这些项不同的权值,然后用权值乘以各项的值与最小值的比值,最后累加,比较累加后值的大小,即可优选出最佳井眼曲线。Well trajectory design is one of the key techniques for successfully drilling an extended reach well. Based on summarizing researches done by others, a comprehensive formula has been deducted to calculate curve coordinates of arc, cycloid, catenary, amended catenary, near catenary, lateral catenary, lateral parabola. For the same target, after figuring out curve parameters of wellbore length, the maximum build up rate, build section length, trip into and out friction, sliding drilling friction, rotary drilling friction, etc, and assigning different weights to these parameters, then the optimum well path curve can be selected by comparing the sum of parameter values multiplied by their weights.

关 键 词：大角度斜井 井眼轨迹 井身结构设计 加权叠加 

分 类 号：TE21[石油与天然气工程—油气井工程]