The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 14, 2013

Filed:

Nov. 11, 2008
Applicants:

Wayne J. Phillips, Houston, TX (US);

Georgiy Bordakov, Richmond, TX (US);

Alexander Kostin, Houston, TX (US);

Shyam Mehta, Missouri City, TX (US);

Denis Heliot, Missouri City, TX (US);

John C. Rasmus, Richmond, TX (US);

Inventors:

Wayne J. Phillips, Houston, TX (US);

Georgiy Bordakov, Richmond, TX (US);

Alexander Kostin, Houston, TX (US);

Shyam Mehta, Missouri City, TX (US);

Denis Heliot, Missouri City, TX (US);

John C. Rasmus, Richmond, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/022 (2012.01);
U.S. Cl.
CPC ...
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.


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