Method of liner drilling and cementing utilizing a...

Details Method of liner drilling and cementing utilizing a... Method of liner drilling and cementing utilizing a...

2011-04-19

2011-04-19

Neuder, William P (Department: 3672)

Boring or penetrating the earth

Processes

C175S171000, C166S380000, C166S208000

Reexamination Certificate

active

07926590

ABSTRACT:
A method of drilling a well and installing a liner includes assembling concentric inner and outer strings of tubulars. A drill bit is located at the lower end of the inner string and a liner with a liner hanger makes up part of the outer string. The inner and outer strings may be rotated in unison to drill the well. At a selected depth, the operator sets the liner hanger and retrieves the inner string. The operator lowers a packer and a cement retainer on a string of conduit. The packer engages the liner hanger and the cement retainer is conveyed to the lower end of the liner. The cement retainer prevents cement in the outer annulus from flowing back up the string of conduit. The operator manipulates the conduit to set the packer.

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