Invention Grant
- Patent Title: Method of determining and utilizing high fidelity wellbore trajectory
- Patent Title (中): 确定和利用高保真井眼轨迹的方法
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Application No.: US12742514Application Date: 2008-11-11
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Publication No.: US08442769B2Publication Date: 2013-05-14
- Inventor: Wayne J. Phillips , Georgiy Bordakov , Alexander Kostin , Shyam Mehta , Denis Heliot , John C. Rasmus
- Applicant: Wayne J. Phillips , Georgiy Bordakov , Alexander Kostin , Shyam Mehta , Denis Heliot , John C. Rasmus
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Chadwick A. Sullivan
- International Application: PCT/US2008/083135 WO 20081111
- International Announcement: WO2009/064732 WO 20090522
- Main IPC: E21B47/022
- IPC: E21B47/022

Abstract:
Various methods are disclosed, comprising obtaining a plurality of raw depth measurements for a wellbore; obtaining survey data about a bottom hole assembly; obtaining depth compensation information; calculating a plurality of compensated depth measurements from the raw depth measurements and the depth compensation information and one or more additional corrections for residual pipe compliance, tide, and rig heave; calculating sag angle and correcting the survey data with the sag angle; determining a high fidelity wellbore trajectory from the compensated depth measurements and the survey data; and then employing the high fidelity wellbore trajectory in various drilling, formation evaluation, and production and reservoir analysis applications. Depth compensation information may comprise at least one of weight on bit, a friction factor, temperature profile, borehole profile, drill string mechanical properties, hookload, and drilling fluid property. The surveys may include both static and continuous surveys.
Public/Granted literature
- US20100307742A1 METHOD OF DETERMINING AND UTILIZING HIGH FIDELITY WELLBORE TRAJECTORY Public/Granted day:2010-12-09
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