Halliburton Energy Services, Inc.

Frank Vinicio Acosta

Lonnie Carl Helms

Nicholas Frederick Budler

Min Mark Yuan

John Key

Rajesh Parameshwaraiah

Stephen Allen Yeldell

Ishwar Dilip Patil

Kevin Wendell Ardoin

Henry Eugene Rogers

David Durward Szarka

Handoko Tirto Santoso

Mayur Narain Ahuja

Avinash Gopal Dharne

Michael Linley Fripp

James R Longbottom

Timothy Rather Tips

Earl Don Webb

Ricky Layne Covington

Jinhua Cao

Michael Dodson

John Roland Key

William Cecil Pearl, Jr

Sam Jason Lewis

Donald R Smith

Donald W Winslow

Gary Joe Makowiecki

Steven Lee Holden

Saul Emmanuel Vazquez Niebla

Tor Sigve Saetre

Priyanshkumar Prashantkumar Desai

Don R Smith

Julio Alberto Cornejo

Clayton Reed Bonn

Thomas Zachary Vonk

Wesley G Duke

Ben E Dawsey

Rafael Hernandez

Stoney M Yates

Kumaran Palanivel

Steven Daniel Southwell

Saul Emmanuel Vazquez-Niebla

Brittany Helene Spivey

Gary J Makowiecki

Donald Wayne Winslow

Cap with cork

Provided, in one aspect, is a cementing apparatus. The cementing apparatus, in one embodiment comprising a housing; a fixed member coupled with the housing, the fixed member having at least one fixed member fluid opening therein; and a moving member positioned downhole of the fixed member and movable between a circulating position and a cemented position, the moving member having at least one moving member fluid opening therein, the at least one moving member fluid opening linearly offset from the at least one fixed member fluid opening.

Cementing apparatus for reverse cementing

A downhole apparatus includes a casing string with a fluid barrier connected therein defining a lower end of a buoyancy chamber. A rupture disk is spaced from the fluid barrier and defines an upper end of the buoyancy chamber. A degradable plug is connected in the casing string above the rupture disk. The degradable plug defines a flow path to permit flow therethrough to the rupture disk, and is movable from a first to a second position in the casing string.

Buoyancy assist tool with degradable nose

A stage cementing tool has a mandrel defining a central flow passage and a plurality of fully open cement flow ports. A packer disposed about the mandrel is movable from an unset to a set position. An opening sleeve is movable in the mandrel from a closed position to an open position in which the flow ports are exposed to allow flow therethrough. The opening sleeve is operable to move the setting sleeve to set the packer against the wellbore as it moves in the mandrel from the closed to the open position.

Stage cementer packer

The present disclosure provides methods for bonding a first downhole tool to a borehole tubular, which include applying solder particles, each particle having an outer shell and a core of liquid metal, to at least one of a surface of the first downhole tool or a surface of the borehole tubular. The methods may also include rupturing the shells of the solder particles to release the liquid metal cores. The methods may further include bonding the first downhole tool to the borehole tubular by allowing the released liquid metal core to solidify.

Systems and methods for bonding a downhole tool to a borehole tubular

A stage cementing tool has a mandrel defining a central flow passage and a plurality of cementing passages in a wall thereof. A packer is disposed about the mandrel. A closing sleeve is detachably connected to and movable relative to the mandrel. An opening sleeve defining a plurality of fully open cement flow ports therethrough is telescopically movable relative to the closing sleeve and movable relative to the mandrel. The opening sleeve is movable to move the packer to the set position, and thereafter movable to open a cement flow path between the central flow passage and an annulus defined by the stage cementing tool and the wellbore.

Telescopic stage cementer packer

Valve systems for inserting into casings used in downhole environments are provided. The valve system includes a mandrel, a check valve assembly, and a setting system. The setting system includes a sealing element, a pair of wedges, and a pair of slips, each located on an outer surface of the mandrel. The wedges are separated from each other by the sealing element. Each wedge includes an inner surface configured to slide along the outer surface of the mandrel and an angled surface having a first set of ratchet teeth. The slips are separated from each other by the pair of wedges. Each slip includes an inner surface having a second set of ratchet teeth configured to engage the first set of ratchet teeth. Also, each slip includes an outer surface having gripping elements configured to grip an inner surface of the casing.

Downhole check valve assembly with a ratchet mechanism

A downhole apparatus includes an outer case connectable at upper and lower ends thereof in a casing string. A degradable plug is fixed in an interior of the outer case. A rupture disc is mounted in a port in the wall of the outer case. The port is positioned to communicate a degrading fluid to an axial flow passage defined in a wall of the outer case and the axial flow passage is configured to communicate the degrading fluid back into the interior of the outer case and into the degradable plug.

Downhole apparatus with degradable plugs

Valve systems and methods for inserting into a casing in a downhole environment are provided. A valve system includes a tool mandrel, a check valve assembly, and a setting system. The setting system includes a sealing element, wedges, slips, and a set nut. Each of the wedges and slips includes an inner surface slidable along the outer surface of the tool mandrel. Each wedge includes a primary angled surface and a secondary angled surface. The wedges are located between the slips and the secondary angled surface of one wedge is in contact to the secondary angled surface of the other wedge. Each of the slips includes an outer surface including gripping elements configured to grip an inner surface of the casing. Also, each of the slips includes an angled side surface configured to engage with the primary angled surface of the wedge.

Downhole check valve assembly with a locking mechanism

The present disclosure relates to multiple stage operations, and more particularly to systems and methods for performing second stage cementing operations with a stage tool. A stage tool comprises: a mandrel; an opening seat; a closing seat; a plurality of ports; a closing sleeve; and a packer element, wherein the opening seat is attached to an interior surface of the mandrel, wherein the closing seat is attached to the interior surface of the mandrel, wherein the plurality of ports is configured to allow fluid communication between the interior surface of the mandrel and an exterior surface of the mandrel, wherein the closing sleeve is disposed on the exterior surface of the mandrel and coupled to the closing seat, wherein the packer element is disposed on the exterior surface of the mandrel.

Annular casing packer collar stage tool for cementing operations

A downhole apparatus comprises a casing string with a degradable plug therein to block flow therethrough. A flow barrier is positioned in the casing below the degradable plug and the degradable plug and the flow barrier defining a buoyancy chamber therebetween. An annular fluid reservoir holds a degrading fluid. The fluid reservoir has first and second rupture disks at upper and lower ends. Fluid from the annular fluid reservoir is communicated to the degradable plug after the first and second rupture disks rupture.

Buoyancy assist tool with annular cavity and piston

A downhole apparatus comprises a casing string with a frangible disk positioned therein. A flow barrier is connected in the casing string and spaced downwardly from the frangible disk. The frangible disk and the flow barrier define a buoyancy chamber. The sliding sleeve will impact and shatter the frangible disk into a plurality of pieces that will pass downwardly in the casing after the casing has been lowered to a desired depth.

Downhole apparatus

A buoyancy assist tool has an outer case and a rupture disk connected in the outer case. A sleeve is disposed in the outer case and movable from first to second position in the outer case. A rupture disk membrane of a rupture disk prevents the sleeve from moving to the second position prior to the rupture disk membrane rupturing. The outer case is configured to be connected in a well casing. A lock ring holds the sleeve in the first position.

Buoyancy assist tool

A buoyancy assist tool has an outer case and a sleeve disposed in the outer case. The sleeve is movable from first to second positions in the outer case. A permeable membrane is attached to the movable sleeve at a lower end thereof. A rupture disk is mounted in the outer case. Fluid flow through the permeable membrane detaches the sleeve from the outer case and moves the sleeve from the first to the second position. In the second position, the sleeve creates an open bore for the passage of downhole tools therethrough.

Growing community of inventors

Spring, TX, United States of America

Frank Vinicio Acosta