发明授权
- 专利标题: Method for estimating a position of a wellbore
- 专利标题(中): 估算井筒位置的方法
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申请号: US10028864申请日: 2001-12-21
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公开(公告)号: US06736221B2公开(公告)日: 2004-05-18
- 发明人: Christopher R. Chia , Wayne J. Phillips , Darren Lee Aklestad
- 申请人: Christopher R. Chia , Wayne J. Phillips , Darren Lee Aklestad
- 主分类号: E21B4700
- IPC分类号: E21B4700
摘要:
A method is disclosed which utilizes multiple overlapping surveys to estimate a position in a wellbore and related position uncertainty. Multiple surveys are often taken over the same portion of a wellbore either concurrently or sequentially and/or using various instruments. Each survey generates an estimated survey position and related uncertainty for a given location in the wellbore. By combining the estimated survey positions and uncertainties for these overlapping surveys, a resultant position and related ellipsoid of uncertainty is estimated. This resultant position estimates a position in the wellbore by incorporating the estimated survey positions and uncertainties of multiple overlapping surveys.
公开/授权文献
- US20030121657A1 Method for estimating a position in a wellbore 公开/授权日:2003-07-03