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:
Sep. 15, 1981
Filed:
Aug. 20, 1979
Applicant:
Inventor:
John V Fredd, Dallas, TX (US);
Assignee:
Otis Engineering Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166183 ; 166184 ; 166321 ; 137540 ; 251 12 ;
Abstract
A well test apparatus in which a by-pass sleeve valve lands in a previously set packer. A lock mandrel assembly lands in the sleeve valve and carries a transducer fitting. A transducer is releasably carried in the fitting. Well conditions such as pressure may be sensed by the transducer and recorded or transmitted to the surface. By manipulation of casing pressure, the by-pass valve may be opened and closed to flow the well at high production rates with the transducer in place.