Halliburton Energy Services, Inc.

Rajesh Parameshwaraiah

Lonnie Carl Helms

Min Mark Yuan

Frank Vinicio Acosta

Mayur Narain Ahuja

Ishwar Dilip Patil

Handoko Tirto Santoso

Stephen Allen Yeldell

Byong Jun Kim

Jinhua Cao

Frank Vinicia Acosta Villarreal

Kevin Wendell Ardoin

Saul Emmanuel Vazquez Niebla

Tor Sigve Saetre

Maithri Muddasani

Thomas Zachary Vonk

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 valve housing has a first flapper moveable from an open position in the housing in which two-way flow is allowed to a closed position in which only one-way flow is permitted. A first collet sleeve is moveable from a first position to a second position in the valve housing. The first collet sleeve in the first position retains the flapper valve in the open position. The collet sleeve is moveable from a first position to a second position which allows the flapper to move to a closed position.

Differential fill valve with collet sleeve

A buoyancy assist tool and a fluid barrier in a casing string define a buoyancy chamber therebetween. The buoyancy assist tool has a housing connected in the casing string with a retaining sleeve detachably connected in the housing. The retaining sleeve is movable from a first to a second position in the housing. A flapper disk is positioned in the housing and covers an upper end of the retaining sleeve in the first position of the retaining sleeve. In the second position of the retaining sleeve the flapper disk is in a retracted position out of the flow path through the housing.

Flapper disk for buoyancy assisted casing equipment

A plug assembly for use in oil and gas wells includes a sleeve having a debris barrier. The plug assembly may have a top sub, a bottom sub, and a middle sub arranged between the top sub and the bottom sub. The middle sub has an interior bore, a valve and a fluid flow channel such that the valve, when opened, allows fluid to flow from an interior bore of the middle sub into the fluid flow channel. The sleeve having the debris barrier is disposed on the middle sub. Fluid flowing in the fluid flow channel moves the sleeve, which moves the debris barrier so that the debris barrier is withdrawn from the fluid flow path through the interior bores of the top sub and the middle sub.

Plug piston barrier

A method of anchoring a housing to an inner diameter of a tubing string can include: installing an anchoring assembly at an end of the tubing string, the anchoring assembly comprising: a body; the housing; an installation sleeve; a rotating sleeve in threaded connection with the housing and the installation sleeve; and a plurality of anchoring buttons located within a plurality of cutouts on the housing; causing movement of the body along a longitudinal axis of the tubing string towards the end of the tubing string that causes the plurality of anchoring buttons to circumvolve around a pin and an edge of the anchoring buttons lockingly engages with the ID of the tubing string after circumvolving; releasing both of the installation sleeve and the rotating sleeve from engagement with the tubing string, the body, and the housing; and removing the installation sleeve and the rotating sleeve from the anchoring assembly.

Anchoring downhole tool housing and body to inner diameter of tubing string

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 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.

Buoyancy assist tool

A dual plug system comprises a bottom plug and a top plug. The bottom plug comprises, a bottom plug mandrel, a plurality of first fins, and a first seat. The plurality of first fins is disposed between a first end and a second end of the bottom plug mandrel, and the first seat is disposed at the second end The top plug comprises a first end and a second end. The top plug further comprises a top plug mandrel, a plurality of second fins, a collar, and a sleeve. The plurality of second fins is disposed around the top plug mandrel covering at least a portion of the length of the top plug mandrel, and the collar is coupled to the top plug mandrel The dual plug system further comprises a connector, wherein the connector is coupled to the first end of the top plug.

Dual sub-surface release plug with bypass for small diameter liners

A downhole tool includes a casing string with a fluid barrier connected therein defining a lower end of a buoyancy chamber. A plug assembly connected in the casing string defines an upper end of the buoyancy chamber. The plug assembly has an outer case with a rupture disc positioned therein configured to block flow and to burst at a predetermined pressure. The rupture disk is removable from a flow path through the outer case upon the flow of fluid therethrough.

Downhole apparatus with removable plugs

A packer assembly and valve assembly without special or custom threads are used to provide a threadless float assembly. A packer assembly with inserts disposed in slip wedges is set by applying compressive forces using a setting tool. A valve assembly may be positioned during setting of the packer assembly between a holder and a setting tool insert end or may be positioned abutting a spacer after setting of the packer assembly. A setting tool and a plunger along with a pump are used to apply compressive forces on the packer assembly to set the packer assembly without requiring that the packer assembly or the valve assembly have special threading as the inserts, holder and spacer maintain the components in a stationary position.

Threadless float equipment and method

A downhole apparatus comprises a casing string with a removable plug therein to block flow therethrough. A flow barrier is positioned in the casing below the removable plug and the removable plug and the flow barrier define a buoyancy chamber therebetween. A debris barrier positioned above the removable plug has a plurality of fragments interspersed in a stretchable material and includes a frangible disc.

Buoyancy assist tool with waffle debris barrier

A downhole apparatus comprises a casing string with a fluid barrier connected in the casing string. A degradable plug is positioned in the casing string above the fluid barrier. The degradable plug and fluid barrier define upper and lower ends of a buoyancy chamber in the casing string. The degradable plug may be degraded to leave an open bore through the casing string after the casing string is lowered into a wellbore.

Buoyancy assist tool with floating piston

A downhole apparatus comprises a casing string with a removable plug therein to block flow therethrough. A flow barrier is positioned in the casing below the removable plug and the removable plug and the flow barrier defining a buoyancy chamber therebetween. A debris barrier positioned above the removable plug includes a frangible disk. A stretchable connecting ring is connected to the frangible disk and to the casing.

Growing community of inventors

Houston, TX, United States of America

Rajesh Parameshwaraiah