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:
Aug. 01, 1989
Filed:
Nov. 19, 1987
Applicant:
Inventors:
Bertrand Peltier, Paris, FR;
Richard Deshais, Courbevoie, FR;
Assignee:
Schlumberger Technology Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 40 ; 175 27 ; 73151 ; 731515 ; 364422 ;
Abstract
The invention relates to the monitoring of the drilling operations of a well using a drill bit mounted at the end of a drill string, which can be taken up by the travelling block of a lifting gear installed in a derrick, in order to permit the addition or removal of members from the drill string. By measurement with the aid of sensors associated with the lifting gear and connected to a processing unit, the altitude and the hook load of the travelling block, it is possible to plot the curve, form which it is possible to deduce information concernig the structure and the behavior of the well being drilled.