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:
Jul. 08, 1986
Filed:
Feb. 28, 1985
Applicant:
Inventor:
Roy R Vann, Katy, TX (US);
Assignee:
Geo Vann, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166250 ; 166297 ; 175-455 ; 73155 ;
Abstract
An improved downhole pressure measuring apparatus includes a flow tube conveying pressurized fluid from a fluid source on the surface into a borehole. The fluid flow and pressure is measured at the surface and the downhole pressure is determined. A perforating gun firing mechanism may be attached to a lower end of the flow tube and positioned in the borehole respective to a perforating gun for the firing thereof. The gun is fired by manipulating the flow tubing and the downhole pressure is simultaneously recorded.