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:
Feb. 14, 2006
Filed:
Apr. 30, 2003
Patrick F. Campbell, Dallas, TX (US);
William David Henderson, Tioga, TX (US);
Jay B. Shivers, Liberty, TX (US);
Mark E. P. Dawson, Metarie, LA (US);
Patrick F. Campbell, Dallas, TX (US);
William David Henderson, Tioga, TX (US);
Jay B. Shivers, Liberty, TX (US);
Mark E. P. Dawson, Metarie, LA (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A multi zone isolation tool () for use in a subterranean wellbore includes a first tubular and a second tubular disposed within the first tubular forming an annular flow path () therebetween and a central flow path () through the second tubular. An annular valving assembly () is positioned in the annular flow path () and a central valving assembly () is positioned in the central flow path (). The central valving assembly () is operably coupled to the annular valving assembly () such that when the central valving assembly () is in a closed position, a pressure variation in the central flow path () will operate the annular valving assembly () from a closed position to an open position.