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:
May. 26, 1992
Filed:
Mar. 04, 1991
Applicant:
Inventors:
Assignee:
Schlumberger Technology Corporation, Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 50 ; 175 65 ; 73151 ;
Abstract
A method for the estimation of pore pressure within a subterranean formation containing fluid during the drilling of a bore hole. The bore hole is drilled using a drill string consisting of a drill bit fitted to its lower end, and using drilling mud pumped from the surface through the drill string and finally evacuated. The method is characterized by, while the drill bit is level with the formation and while the drill string is being raised to the surface for a distance at least equalling the drill pipe length,
McCann, Dominic. (1992). Method for the estimation of pore pressure within a subterranean (U.S. Patent No. 5115871). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5115871
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