Weatherford Technology Holdings, LLC

Weatherford/lamb, Inc.

Egor Dudochkin

Douglas Farley

Steven Michael Rosenberg

Ivan Andre Barannikow

Douglas Brian Farley

Richard Alastair Howard Dalzell

Bjørn Erling Hagen

Richard Alastair Dalzell

Bjorn Erling Hagen

A method of using a liner assembly comprises inserting the liner assembly into a wellbore, the liner assembly having an annular packer and a port collar. The method further comprises closing fluid flow through a lower end of the liner assembly, actuating the annular packer into engagement with the wellbore, and actuating the port collar into an open position to open fluid communication between an interior of the liner assembly and the wellbore. The method further comprises pumping cement into the wellbore through the port collar at a location above the annular packer and actuating the port collar into a closed position to close fluid communication between the interior of the liner assembly and the wellbore.

Remotely operated stage cementing methods for liner drilling installations

A swivel configured to rotationally decouple an upper section of a work string from a lower section of the work string. The swivel includes an upper body coupled to a lower body by a ring member and a plurality of shearable members. The lower body has a plurality of teeth members that engage a plurality of teeth members of the ring member. Rotation of the upper body is transmitted to the lower body by the ring member. The upper body is rotatable relative to the lower body when the shearable members are sheared.

Swivel and method of use

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Conroe, TX, United States of America

Egor Dudochkin