Schlumberger Technology Corporation

Other

Torsch Inc.

Steelhaus Technologies, Inc.

Matthew McCarthy

Shane Sargent

Grant George

Grant E George

Curtis Ring

Sean Borschneck

Steven Taitinger

Sanjay Menon

An apparatus for selectably sealing an interior bore of a completion string comprises an elongate body and has connectors for connecting the body in line with a completion string. An interior wall of the apparatus forms a bore through the elongate body. A rupturable barrier member fastened to and bridging the bore is deformable so as to permit passage therepast after being ruptured. The barrier member includes at a weakened path defining a leaf extending from a hinge portion narrower than the widest portion of the leaf.

Barrier member

A technique facilitates operation of a slip assembly, e.g. a frac plug assembly, having a plurality of slips. The plurality of slips may selectively be forced in a radially outward direction via, for example, a cone so as to set the slips against a surrounding casing or other tubing. The slip assembly further comprises a mechanism which allows different amounts of radial movement of individuals slips to ensure sufficient setting of the individual slips when the surrounding tubing is oval or otherwise out of round.

Slip system for use in downhole applications

An apparatus for selectably injecting materials into a well comprises an elongate inner casing having first and second sets of selectably closable passages therethrough and an outer casing extending between the first and second ends surrounding the inner casing so as to form an annular cavity therebetween. The first end of the outer casing is sealably connected to the inner casing and the second end of the outer casing has a free edge proximate to the second set of passages. The first set of passages extends through the inner casing into the annular cavity such that fluid passing through either of the first or second sets of passages enters an exterior of the apparatus at a common location.

Sleeve valve

An apparatus for selectively opening a passage through a downhole casing comprises an elongate cylindrical housing defining a central bore therein and having at least one passage extending therethrough between the central bore and an exterior of the housing, the housing being configured to be located in line within a downhole casing, a ball seat slidably located within the central bore so as to be operable to selectively cover or uncover the at least one passage and a sealing sleeve slidably located within the central bore between an open and closed position wherein the sealing sleeve valve covers the at least one passage in the closed position and uncovers the at least one passage in the open position.

Downhole degradable staging tool

An apparatus and method for assisting transportation of a tool down a wellbore. The apparatus comprises an elongate body having an exterior surface extending between top and bottom ends, a connector at the bottom end operable to be secured above the tool and at least one passage formed into the exterior surface defining a first flow path having an entrance and an exit oriented towards the top end of the elongate body. The method comprises securing the elongate body to a top end of a tool in a wellbore, directing a flow of fluid down the wellbore to a position above the elongate body, separating the flow of the fluid into an inner portion and an outer portion through radially separated paths and redirecting the inner portion to flow upwards into the outer portion of the flow of the fluid.

Pump down assist apparatus

An apparatus for use in forming a plug during hydraulic fracturing of a subterranean soil formation includes a top tubular retaining body extending between top and bottom ends and having a frustoconical outer surface extending from the bottom end thereof; and a plurality of slip arms located around the outer surface of the retaining body, each slip arm extending between top and bottom ends and having an inner surface extending from the slip arm top end corresponding to the outer surface of the retaining body and an exterior surface adapted to engage a wellbore. The plurality of slip arms extend from a ring surrounding the retaining body.

Fracing plug

An apparatus for bridging a section of ruptured casing within an oil well comprising a length of bridging pipe extending between first and second ends sized to be located within the casing so as to span the section of ruptured casing, a first seal located around the bridging pipe proximate to the first end thereof, a second seal located around the bridging pipe proximate to the second end thereof, an installation assembly extending through the bridging pipe operably engaged with the first and second ends of the bridging pipe, wherein the installation assembly is operable to extend each of the first and second seals into engagement with the oil well and wherein the installation assembly is further operable to selectably disengage from the bridging pipe.

Downhole casing patch

An apparatus for use in forming a plug during hydraulic fracturing of a subterranean soil formation comprising a top tubular retaining body extending between top and bottom ends and having a frustoconical outer surface extending from the bottom end thereof. The apparatus further includes a plurality of slip arms located around the outer surface of the retaining body, each slip arm extending between top and bottom ends and having an inner surface extending from the top end corresponding to the outer surface of the retaining body and an exterior surface adapted to frictionally engage a wellbore; and a seal element located around the outer surface of the retaining body above the plurality of slip arms adapted to be displaced towards the top end of the retaining body by the plurality of slip arms so as to seal an annulus between the retaining body and the wellbore.

An apparatus and method for displacing a sleeve within a downhole tool wherein the apparatus comprises an outer mandrel, and a sleeve extending between first and second ends slidably located within the outer mandrel wherein the sleeve and mandrel form first, second and third annular chambers therebetween. The first annular chamber is in fluidic communication with an interior of the sleeve. The second annular chamber is in fluidic communication with an exterior of the mandrel. The third annular chamber is substantially sealed. The method comprises pressurizing the second chamber through bores extending through the sleeve and releasing the pressure within the second chamber so as to permit a vacuum within a third sealed chamber and a pressure from an exterior of the mandrel to pressurize a first chamber to draw the sleeve towards a second end of the outer mandrel thereby uncovering the valve openings.

Method and apparatus for controlling fluid flow through a down hole tool

An apparatus for selectably isolating a subterranean formation from a production string comprises a radially expandable ring located between upper and lower sleeves and retained at a position to intrude into a central passage extending therethrough. The expandable ring is permitted to radially expand into a recess upon displacement of the lower sleeve to permit a body retained thereon to move therepast. The apparatus includes a pair of inner and outer indexing rings which cooperate to permit the inner and outer indexing rings to move towards a bottom end thereof only to a fixed endwall whereafter further movement of the inner and outer indexing rings and lower sleeve is prevented.

Fracking valve and method for selectively isolating a subterranean formation

An apparatus for suspending a liner within a bore comprising a central tubular member and first and second sets of radially expandable arms. Each set of arms are expandable by corresponding longitudinally movable cones spaced apart along the tubular member. The apparatus further includes a seal located between the first and second sets of radially expandable arms and a selectably longitudinally compressible sleeve located between the first and second sets of radially expandable arms.

Liner hanger

An sleeve valve for a well assembly includes at least one set of passages extending through a tubular body between the central passage and an exterior of the tubular body and a sleeve slidably located within the central passage of the valve body adapted to selectably sealably cover or uncover the at least one sets of passages. A shifting tool for actuating the sleeve valve is connectable to a tool string and includes a shifting bore with an actuating piston extending from a central bore through the shifting tool and first and second key bores extending radially inwards from the outer surface each having a piston keys located therein. Each of the first and second piston keys is operably connected to the actuating piston so as to be extended from the outer surface when the central bore is supplied with a pressurized fluid.

Growing community of inventors

Calgary, Canada

Matthew McCarthy