Patent · US Active

Wellbore casing section with moveable portion for providing a casing exit

US8789580B2 · kind B2 · utility

3Cited by

8References

15Claims

0Family size

Assignee

Halliburton Energy Services, Inc. · US

Inventors

William Wallace Dancer · Little Elm, US
Stacey Blaine Donovan · Fort Worth, US

Key dates

Filing date	Apr 30, 2012
Grant date	Jul 29, 2014
Priority date	—
Expiry date	Apr 30, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B41/0035
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Systems and methods for providing a casing exit include a casing section having a generally cylindrical outer sleeve including a proximal end and a distal end. The outer sleeve may define an outer window extending between the proximal end and the distal end. A generally cylindrical inner sleeve may be received within the outer sleeve and may define an inner window. The inner sleeve may be moveable between a first position in which the inner window is misaligned with the outer window and the inner sleeve substantially closes the outer window, and a second position in which the inner window is aligned with the outer window. A deflector tool may be configured to engage the inner sleeve and move the inner sleeve from the first position to the second position.

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