Washpipeless isolation strings and methods for isolation...

Details Washpipeless isolation strings and methods for isolation... Washpipeless isolation strings and methods for isolation...

2007-04-10

2007-04-10

Gay, Jennifer H. (Department: 3672)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S386000, C166S329000, C166S332400

Reexamination Certificate

active

10712153

ABSTRACT:
An isolation string having an upper packer and an isolation pipe in mechanical communication with the upper packer, the isolation pipe comprises an operable valve and an object activated valve. An object holding service tool is adapted to release an object to activate the object activated valve. A method of running-in an isolation string, comprising an operable valve and an object activated valve, with an object holding service tool having an object held therewith; setting the isolation string in the casing adjacent perforations; pressurizing the object to cause a release from the object holding service tool, whereby the object travels to the object activated valve; closing the object activated valve with the released object; and withdrawing the object holding service tool from the well.

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