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:
Nov. 08, 1983
Filed:
Jan. 29, 1981
Applicant:
Inventor:
Ronald G Gillespie, Old Tappan, NJ (US);
Assignee:
Texaco Development Corporation, White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 57 ; 166 66 ; 166179 ;
Abstract
Apparatus situated in a borehole traversing an earth formation is protected from closing of the borehole by being encased in an inflatable device. Surface equipment inflates and maintains the inflatable device at a sufficient pressure so as to prevent the earth formation from closing in and contacting the apparatus. A pressure sensor senses the maintenance pressure and provides a corresponding signal. An alarm circuit provides an alarm when the pressure decreases below the sufficient maintenance pressure level.