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. 17, 1992
Filed:
Mar. 18, 1991
Applicant:
Inventors:
Jean P Buytaert, Ploubalay, FR;
Allen Duckworth, Middlefield, CT (US);
Assignee:
Teleco Oilfield Services Inc., Meriden, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
175 40 ; 175 50 ;
Abstract
An MWD tool includes a mud pulse generator for operation in an upper section of borehole, a sensor portion for operating close to the drill bit in a deep small diameter section of the borehole and a connector portion running inside the drill pipe for conducting output signals of the sensor portion to the mud pulse generator for subsequent transmission to a receiver at the surface of the borehole.