井眼测量误差椭球最小间距计算方法

doi:10.7623/syxb201711011

石油学报

井眼测量误差椭球最小间距计算方法

唐宁¹, 王少萍¹, 洪迪峰²

1. 北京航空航天大学自动化科学与电气工程学院北京 100191;
2. 中国石油集团钻井工程技术研究院北京 102206

收稿日期:2016-12-23 修回日期:2017-08-01 出版日期:2017-11-25 发布日期:2017-12-08
通讯作者: 洪迪峰,男,1983年12月生,2006年获清华大学学士学位,2011年获清华大学博士学位,现为中国石油集团钻井工程技术研究院高级工程师,主要从事力学和井下控制工程技术方面的研究。Email:hdfdr@cnpc.com.cn
作者简介:唐宁,男,1995年5月生,2017年获北京航空航天大学学士学位,现为俄罗斯莫斯科鲍曼国立技术大学研究生,主要从事控制理论与控制工程方面的研究。Email:bhtangning@163.com
基金资助:
中国石油集团公司科技项目（2013E-3801、2014A-4215）资助。

A calculation method of minimum distance between wellbore survey error ellipsoids

Tang Ning¹, Wang Shaoping¹, Hong Difeng²

1. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China;
2. CNPC Drilling Research Institute, Beijing 102206, China

Received:2016-12-23 Revised:2017-08-01 Online:2017-11-25 Published:2017-12-08

摘要/Abstract

摘要：

随着丛式井和加密井在油田的广泛应用，对井眼防碰分析提出了更高的要求。井眼分离系数是防碰分析的一个常用指标，然而不同误差椭球分离距计算方法导致结果差异较大，为此提出测量误差椭球最小间距计算新方法，以更好地满足应用需要。在坐标变换及误差椭球计算基础上，推导了中心向量法误差椭球分离距计算公式，进而应用最优化理论求解了两误差椭球最小间距，并研究了快速求解策略，可精确、快速地计算井眼分离系数。算例分析表明，与其他计算方法相比，新方法能更好地指导井眼防碰风险评价工作，在丛式井设计和定向钻井中具有应用价值。

关键词: 丛式井, 井眼防碰, 分离系数, 误差椭球, 最小间距

Abstract:

With the wide application of cluster wells and infill wells in oilfields, higher requirements are put forward for the wellbore anti-collision analysis. Wellbore separation factor is a common index for anti-collision analysis. However, different calculation methods of the distance between wellbore error ellipsoids lead to great differences in results, so that a new method was presented to calculate the minimum distance between wellbore survey error ellipsoids to satisfy the application requirements. Based on the coordinate transformation and error ellipsoid calculation, the formulae for calculating the distance between wellbore error ellipsoids were derived by the center vector method; the minimum distance between wellbore error ellipsoids was further solved using the optimization theory; a rapid solution strategy was also studied to calculate the separation factor accurately and rapidly. The case analysis show that the new method can guide the wellbore anti-collision risk assessment better than other calculation methods, which has application value in the cluster well design and directional drilling.

Key words: cluster wells, wellbore anti-collision, separation factor, error ellipsoid, minimum distance

中图分类号:

TE243.9

唐宁, 王少萍, 洪迪峰. 井眼测量误差椭球最小间距计算方法[J]. 石油学报, DOI: 10.7623/syxb201711011.

Tang Ning, Wang Shaoping, Hong Difeng. A calculation method of minimum distance between wellbore survey error ellipsoids[J]. Acta Petrolei Sinica, DOI: 10.7623/syxb201711011.

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井眼测量误差椭球最小间距计算方法

A calculation method of minimum distance between wellbore survey error ellipsoids

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