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. 08, 1987
Filed:
Dec. 27, 1985
Applicant:
Inventor:
Roderick D McLeod, Edmonton, Alberta, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21B / ;
U.S. Cl.
CPC ...
166 73 ; 166196 ;
Abstract
An expanding nipple, externally mounted packer has a body which mounts onto a casing head by way of a tubing spool or the like. The body contains the upper ends of a pair of concentric mandrels which are lowered into the well casing. The outer mandrel has a deformable seal on its lower end and the inner mandrel has an expander on its lower end. Means in the body, responsive to hydraulic pressure, raises the inner mandrel with respect to the outer mandrel so that the expander forces the seal outwards against the casing wall.