Patent · US Expired

Upper zone isolation tool for intelligent well completions

US6634429B2 · kind B2 · utility

40Cited by

13References

24Claims

0Family size

Assignee

Halliburton Energy Services, Inc. · US

Inventors

William David Henderson · Frisco, US
Travis W. Cavender · Angleton, US

Key dates

Filing date	Aug 17, 2001
Grant date	Oct 21, 2003
Priority date	—
Expiry date	Aug 17, 2021

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B43/14
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Improved methods and apparatus for isolating and opening a subterranean zone in a multiple zone well. An isolation tool is installed in the well with a tubing string accessing a particular zone. The tool can be remotely opened and closed to provide access to the zone either mechanically or by applying pressure variation sequences to the tool.

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