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:
Mar. 22, 2005
Filed:
Dec. 31, 2002
Leila Hoteit, Montigny-sur-Loing, FR;
Jonathan Dunlop, Cambridge, GB;
Walt Aldred, Thriplow, GB;
Richard Meehan, Sugar Land, TX (US);
Leila Hoteit, Montigny-sur-Loing, FR;
Jonathan Dunlop, Cambridge, GB;
Walt Aldred, Thriplow, GB;
Richard Meehan, Sugar Land, TX (US);
Schlumberger Technology Corporation, Ridgefield, CT (US);
Abstract
A method and system for averting or mitigating undesirable drilling events during a drilling process is disclosed. The state of the drilling rig is detected, preferably automatically, based on surface and/or downhole measurement data. One or more undesirable drilling events are detected by correlating the acquired measurement data with the detected state. A drilling rig action is determined which averts or mitigates a detected undesirable drilling event. Finally, the drilling process is overridden by commanding performance of the action. The algorithm used in detecting the most likely rig state is preferably probabilistic in nature, and is even more preferably based on particle filtering techniques.