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:
Jun. 02, 1992
Filed:
Dec. 07, 1990
John T Brandell, Duncan, OK (US);
T Austin Freeman, Wassenaar, NL;
Halliburton Company, Duncan, OK (US);
Abstract
A packer apparatus, particularly a cup type casing packer shoe, includes a pressure-actuated closing sleeve and pressure-actuated pumpout seats. An upper pumpout seat moves with the closing sleeve in response to a first pressure so that the closing sleeve closes ports through which fluid is communicated to an annulus outside the apparatus. Both the upper pumpout seat and a lower pumpout seat and any intervening fluid are pumped out of the apparatus in response to a second, higher pressure so that the apparatus communicates with the well below the annulus without a drillout procedure having to be performed through the apparatus or a tubing string in which the apparatus is connected. A related method is also disclosed.