ISOLATION SYSTEM FOR TWO PRODUCING FORMATIONS - SCHLUMBERGER TECHNOLOGY CORP

Title:

ISOLATION SYSTEM FOR TWO PRODUCING FORMATIONS

Document Type and Number:

WIPO Patent Application WO1999031352

Kind Code:

A3

Abstract:

A formation isolation valve assembly for use in a well includes first and second fluid paths (178, 180) that are coupled to at least first and second completion zones (20, 22). A first valve (116) controls fluid flow from the first zone to the first fluid path, and a second valve (114) controls fluid flow from a second zone to the second fluid path. The valves may include ball valves and sleeve valves.

Inventors:

PATEL DINESH R

Application Number:

PCT/US1998/025838

Publication Date:

September 16, 1999

Filing Date:

December 04, 1998

Export Citation:

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Assignee:

SCHLUMBERGER TECHNOLOGY CORP (US)

International Classes:

E21B23/00; E21B34/10; E21B43/14; (IPC1-7): E21B43/14; E21B23/00; E21B34/10

Domestic Patent References:

WO1992008875A2

1992-05-29

Foreign References:

US3412806A	1968-11-26
US2963089A	1960-12-06
US3912008A	1975-10-14
US2951536A	1960-09-06
US3640341A	1972-02-08
EP0859123A2	1998-08-19

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