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. 02, 1999
Filed:
Jul. 17, 1998
Applicant:
Inventor:
Mark McCorry, Aberdeen, GB;
Assignee:
Phoenix Petroleum Services Limited, Aberdeenshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166321 ; 1662423 ;
Abstract
A differential pressure operated blanking tool (1) for use in a completion automatically permits logging operations to be carried out in the absence of fluid flow in the tool (1). The tool (1) includes a pair of limbs (3,5) which communicate via a diverter (7) with a production tubing connection (4). In the absence of fluid flow within the tool (1), the diverter remains open to allow access for logging operations but is movable to a closed position occluding one of the limbs (3) as a result of a pressure differential established by fluid movement in the tool (1).