Halliburton Energy Services, Inc.

Srinivasa Prasanna Vemuri

David Joe Steele

Wesley Paul Dietz

Morten Falnes

Stacey Blaine Donovan

Christian Alexander Ramirez

Matthew Bradley Stokes

Aihua Liang

Matthew James Kelsey

Eulalio De Jesus Rosas Fermin

Provided is a y-block, a multilateral junction, and a method for forming a well system. The y-block, in one aspect, includes a housing having a first end and a second opposing end, and a single first bore extending into the housing from the first end, the single first bore defining a first centerline. The y-block according to this aspect further includes second and third separate bores extending into the housing and branching off from the single first bore, the second bore defining a second centerline and the third bore defining a third centerline, wherein the second and third centerlines are angled relative to one another.

High-pressure multilateral junction with mainbore and lateral access and control

Provided is a downhole tool, a y-block, a well system, and a method for forming a well system. The downhole tool, in one aspect, includes a bottom hole assembly (BHA) having an uphole end and a downhole end, and a shroud positioned around and proximate the downhole end of the BHA, the shroud operable to slide relative to the BHA. The downhole tool, in this aspect, may further include one or more shear features coupling the shroud to the downhole end of the BHA.

Downhole tool with a releasable shroud at a downhole tip thereof

Provided is a multilateral leg bore, a multilateral junction, and a well system. The multilateral leg bore, in one aspect, includes a unitary housing having a first end and a second opposing end defining a length (L). In accordance with this aspect, the multilateral junction includes three or more bores formed in the housing and extending along the length (L).

Unitary lateral leg with three or more openings

Provided, in one aspect, is a method for forming a well system. The method, in one aspect, includes forming a wellbore within a subterranean formation, and positioning an anchoring subassembly within the wellbore. The method, according to this aspect, further includes washing over at least a portion of the anchoring subassembly with a washover assembly, and then removing the washed over anchoring subassembly from the wellbore.

Method for washing over an anchoring subassembly

Provided is a multilateral junction (MLT), a well system, and a method for forming a well system. The MLT, in one aspect, includes a y-block having a housing with a single first bore and second and third bores extending therein, the second and third bores defining second and third centerlines. The MLT, in this aspect, further includes a mainbore leg having a first mainbore leg end coupled to the second bore and a second opposing mainbore leg end, and a lateral bore leg having a first lateral bore leg end coupled to the third bore and a second opposing lateral bore leg end. In this aspect, the mainbore leg and the lateral bore leg are twisted with respect to the second and third bore such that a first plane taken through centerlines of the second opposing mainbore leg end and the second opposing lateral bore leg end is angled.

Multilateral junction with twisted mainbore and lateral bore legs

A system and method to protect downhole tools and equipment used in transporting fluids with erosional and/or corrosive characteristics is disclosed according to one or more embodiments. The protection assembly engages with a latch coupling or other surface in need of protection to form a barrier between the latch coupling surface and any erosional or corrosive fluids. The protection assembly comprises a barrier sleeve portion and a support sleeve portion disposed in the barrier sleeve. The support sleeve is moveable between a first and second position within the barrier sleeve. In a first position of the support sleeve, collet fingers in the barrier sleeve may flex to allow movement through the latch coupling while in a second position of the support sleeve, the collet fingers may not flex and the barrier sleeve is engaged and protecting the latch coupling.

Mechanical barriers for downhole degradation and debris control

A method includes conveying a washover whipstock coupled to an orienting latch anchor into a parent wellbore lined with casing and securing the orienting latch anchor to the casing. A washover tool couples to and removes the washover whipstock from the parent wellbore, and thereby exposes a releasable orienting coupling of the orienting latch anchor. A workover whipstock coupled to a junction isolation tool is then conveyed into the parent wellbore and the workover whipstock is coupled to the orienting latch anchor at the releasable orienting coupling. The junction isolation tool is separated from the workover whipstock and advanced into the lateral wellbore, following which the junction isolation tool is retracted back into the parent wellbore to be re-attached to the workover whipstock to remove the workover whipstock from the parent wellbore.

Reduced trip well system for multilateral wells

A casing joint assembly includes a casing joint having an upper end and a lower end, and an upper coupling joint having a first portion coupled to an upper casing section and a second portion coupled to the casing joint at the upper end. A joint interface secures the first portion to the second portion. The first portion is made of a first material and the second portion is made of a second material dissimilar to the first material, and an inner coating is applied on an inner radial surface of the upper coupling joint and extending axially across the joint interface.

Casing joint assembly

An example whipstock assembly includes a whipstock providing a ramped surface and a longitudinal groove defined in the ramped surface. A lead mill is coupled to the whipstock with a shear bolt and having a slot defined therein, and a torque key is movable between an extended position, where the torque key is partially positioned within both the slot and the longitudinal groove, and a retracted position, where the torque key retracts into the slot. When the torque key is in the extended position, the torque key prevents the lead mill from rotating with respect to the whipstock.

Mill blade torque support

Assemblies that can be disposed in a subterranean bore and that can facilitate branch wellbore creation are described. An assembly can include threadedly coupled components having inner and outer sealing members in grooves. The sealing member can cooperate with the components to provide a pressure seal. The assembly can also include a venting member for equalizing pressure in a chamber defined by the coupled components. One of the components can be made from aluminum. At least part of that component can be coated with a coating material that is nonconductive.

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Frisco, TX, United States of America

Srinivasa Prasanna Vemuri