Patent · US Active

Fill up tool

US8833471B2 · kind B2 · utility

0Cited by

79References

21Claims

0Family size

Assignee

Weatherford/Lamb, Inc. · US

Inventors

Jimmy Duane Wiens · Willis, US
Yury P. Gutsu · Samara, RU
Benson Thomas · Pearland, US
Karsten Heidecke · Houston, US
Jim Hollingsworth · Cypress, US
Doyle Fredric Boutwell, Jr. · Houston, US
Rodney Stephens · Houston, US
Russell W. Thompson · Hallsville, US
Patrick J. Zimmerman · Houston, US

Key dates

Filing date	Aug 9, 2011
Grant date	Sep 16, 2014
Priority date	—
Expiry date	Aug 24, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B33/04
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A fill up tool includes a mandrel; a primary sealing member disposed around the mandrel; and a selectively operable secondary sealing member activated by rotation of the mandrel. In another embodiment, the selectively operable secondary sealing member is activated using hydraulic pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.