Halliburton Energy Services, Inc.

Odee Paul Daigle

Gary Kohn

Ryan Thomas Humphrey

Arthur Terry Stautzenberger

Richard Paul Noffke

Stephen Ross Maddux

David Matus

Emile Edmund Sevadjian

Grant L Hartman

Carlos Alberto Moreno

Gary Allen Kohn

The disclosed embodiments include a coupler assembly and method for conveying a single piece liner hanger body. In one embodiment, the coupler assembly includes a nut, a load transfer sleeve, a locking dog retainer, a garter spring, a locking dog, a collet, an outer collet mandrel, and a collet prop mandrel. As described herein, components of the coupler assembly are assembled and installed within the inner diameter of the single piece liner hanger body for engaging with a liner hanger sub-assembly attached to a miming tool.

Big bore running tool quick lock adaptor

A downhole coupling system for joining together two segments of a tool string includes two mandrels, each having an interlocking interface at an end that abuts the adjacent mandrel and to communicate torque from one mandrel to the next. Each of the mandrels includes a threaded exterior surface, with the threaded surfaces have opposing thread directions or differing thread pitches. The coupling includes mating internal threads. A plurality of axial grooves is formed in each of the interior surface of the coupling and the exterior surface of one of the mandrels. A keyed latch ring having a plurality of internal keys and a plurality of external keys is included to engage the axial grooves, thereby rotationally locking the coupling relative to the first mandrel and second mandrel.

Running tool lock mechanism

A method for reverse circulation cementing of a liner in a wellbore extending through a subterranean formation is presented. A running tool with expansion cone, annular isolation device, and reverse circulation assembly is run-in with a liner. The annular isolation device is set against the casing. A valve, such as a dropped-ball valve, opens reverse circulation ports for the cementing operation. The liner annulus is cemented using reverse circulation. An expandable liner hanger, if present, is expanded into engagement with the casing. The running tool is released and pulled from the hole.

Cementing a liner using reverse circulation

Reverse circulation cementing of a liner in a wellbore extending through a subterranean formation is presented. A running tool with expansion cone, release assembly, annular isolation device, and reverse circulation assembly is run-in with a liner. The annular isolation device is set against the casing. A valve, such as a dropped-ball operated sliding sleeve valve, opens reverse circulation ports for the cementing operation. The liner annulus is cemented using reverse circulation. The expandable liner hanger is expanded into engagement with the casing. Conventional circulation is restored. The running tool is released and pulled from the hole.

Reverse circulation cementing system for cementing a liner

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Sachse, TX, United States of America

Odee Paul Daigle