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.
Patent No.:
Date of Patent:
Jan. 08, 2008
Filed:
May. 05, 2006
Applicant:
Mark W. Hutchinson, Marlow, Bucks SL7 1NX, GB;
Inventor:
Mark W. Hutchinson, Marlow, Bucks SL7 1NX, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 12/02 (2006.01); E21B 21/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for determining a drilling malfunction includes determining a correspondence between at least one drilling operating parameter and at least one drilling response parameter. Determining the correspondence is performed when a parameter related to a dissipative motion of the drill string falls below a selected threshold. A value of the drilling response parameter is predicted based on the correspondence and measurements of the drilling operating parameter. Existence of the malfunction is determined when the predicted value is substantially different from a measured value of the drilling response parameter.