Baker Hughes Corporation

Christopher W Guidry

Stephen L Crow

Erik Vilhelm Nordenstam

Marcelle H Hedrick

William Hered

Erik V Nordenstam

Marcelle H Hendrik

Steve Rosenblatt

Daniel R Hart

David Blair Haughton

Anthony Zavesky

Guruswami Navin

William A Hered

Edward O'Malley

Gregory Lee Hern

Robert O'Brien

John Phillip Davis

Calvin J Stowe

Andrew Ponder

Charles W Pleasants

Paul Lowell Connell

Roy E Swanson

Steven G Blair

Stephen K Harmon

Joshua C Joerg

Kjell Nygardsvoll

Graeme D McKay

Nathan J Brandt

Lambertus C F Joppe

Brett W Hrabovsky

Songfeng Yang

Navin Guruswami

Steve G Blair

Anthony C Zaveky

Grame D Mckay

Lambertus Cf Joppe

Andrew David Ponder

Calvin Joseph Stowe

A wellbore tool which includes a housing having an axial flowbore and a piston sleeve movably disposed within the flowbore. The tool is moveable between first and second operating positions by an actuation mechanism having a piston with a seat having a plurality of separate arcuate segments. The tool can be moved between first and second operating positions with the use of actuating plugs of different sizes that can be landed upon the seat.

Tool with multisize segmented ring seat

A guide has an open end and a finger structure preferably of a shape memory alloy. The guide is run in small-diameter configuration through a restriction with a fishing tool, such as an overshot, above it. Once through the restriction, power to heaters on the fingers takes the material past its transition temperature to allow the guide lower end to fan out and surround a skewed fish that is in a slanted position and leaning on a wall of a surrounding tubular that has a larger dimension than the restriction. The bottomhole assembly is then advanced until the fish is captured by the fishing tool and pulled out of the hole. The fingers are forcibly retracted as the assembly is pulled back through the restriction. The guide can use retained fingers with an outward bias to flare out after passing through a restriction, thus acting as a fish guide.

Fishing guide for directing a skewed fish in a wellbore

A lock holds a movable member in position to a stationary member. The set position of the tool is held while being configured to release with the capability of being reset in the same trip to lock a set position of the tool in the same or a new location.

Resettable lock for a subterranean tool

A cut-and-pull spear is configured to obtain multiple grips in a tubular to be cut in tension. A lock feature holds the set position of the slips and seal. The lock can be defeated with an axial force that retracts a spring-loaded dog, and the lock can be reset to the run-in position, with the slips and seal retracted, so that the assembly can be repositioned in the same trip for another cut. A cam surface prevents setting the slips and seal until the spear is relocated to the next desired cut location or removed from the wellbore. The lock can be defeated with picking up or with a pressuring up on a dropped ball for an emergency release. A surface signal of the release is provided by a stack of disc springs that have to be compressed to release the lock.

Multi-position mechanical spear for multiple tension cuts with releasable locking feature

A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while a mandrel is manipulated. An annular seal is set in conjunction with the slips to provide well control during the cut. An internal bypass around the seal can be in the open position to allow circulation during the cut. The bypass can be closed to control a well kick with mechanical manipulation as the seal remains set. If the tubular will not release after an initial cut, the spear can be triggered to release and be reset at another location. The mandrel is open to circulation while the slips and seal are set and the cut is being made. Cuttings are filtered before entering the bypass to keep the cuttings out of the blowout preventers.

Tubular cutting with a sealed annular space and fluid flow for cuttings removal

Tubular cutting with debris filtration

Multi-position mechanical spear for multiple tension cuts while removing cuttings

A damping assembly including a damping device including a body, a piston assembly having a piston rod disposed within the body, a biasing member biasing the piston rod to a position within the body, and a damping block connected to and movable with the piston rod; and, a connector associated with a downhole tool and connectable to the damping device; and wherein the damping device reduces effects of shocks experienced by the downhole tool via the damping block. Also included is a method of reducing impact of shocks on a downhole tool during tripping.

Damping assembly for downhole tool deployment and method thereof

A system and method for obtaining an impression of an object in a remote environment. An impression block is affixed to a running string and disposed into the remote environment and used to form an impression. The impression block includes an impression section formed of a shape memory material that can be transformed between an original shape and a temporary shape.

Downhole impression imaging system and methods using shape memory material

A whipstock features a spiral ramp so that, in a horizontal run, access to a milled window with other tools is not impeded because such tools can traverse onto the ramp and still be directed to the window. Angular rotation of the ramp can be at 180&#xb0; or more and the pitch is selected to avoid getting the equipment being advanced into a bind. Optionally, a guide track can be configured into the whipstock ramp to help the mill follow the spiral path until the proper orientation is obtained and the track ends to allow separation of the mill from the track. A slot can be provided near the ramp upper end to aid in retrieval operations.

Spiral whipstock for low-side casing exits

An anchor system including a housing having a radial opening therein. A piston disposed within the housing and translatable therein. A slip in operable communication with the piston such that translation of the piston axially of the housing causes movement of the slip radially of the housing. The slip having a contact face that is nonparallel to an axis of the housing and nonparallel to a surface against which the slip is configured to be set. A method for anchoring a tool is included.

Anchor system and method for anchoring a tool with a positional bias

A milling tool which includes a nose cutting portion, a cutting section having a plurality of hardened cutters and a shaft portion. A wear pad is disposed on the cutting section and shaft portion. Upon the shaft portion, the wear pad extends radially outwardly to an engagement diameter that exceeds the maximum cutting diameter of the cutters.

Milling tool for establishing openings in wellbore obstructions

An anchor system includes an anchoring device. The anchoring device is operably connected to at least one of a restriction indicator and a load isolation device each of which include a release member that releases at a selected load in order to ensure setting of the anchor at a desired location. A method is included.

Anchoring system and method

A cutting assembly for external conduits on a tubing string or main tubular conduit features at least one breakaway in the string that can be severed with a tensile force. Preferably each external conduit is run through a cutter housing that is integral with a passage having threaded end connections. While in some scenarios it is preferred that the main tubular conduit is severed below the cutting assembly thus allowing the cutting apparatus to be retrieved with the upper portions of the cut main tubular conduit and external longitudinal member(s), in other circumstances it may be desired that the main tubular conduit is severed above the cutting assembly allowing the cutting apparatus to be left 'downhole' with the lower portion of the cut main tubular conduit and the BHA. The cutter knife assembly chambers or channels can be in banks that are axially spaced using bypass channels to access lower banks. The cutter knife assembly and associated channels can be mirror images so that the external conduits can be cut regardless of where the tubing string is severed and one or more conduits can be cut with a single cutter assembly.

Auxiliary conduit cutting apparatus

A cutting assembly for external conduits on a tubing string features a breakaway in the string that can be severed with a tensile force. Preferably each external conduit is run through a cutter housing. Upon severing of the string and applying a pickup force, a tension is applied to each external conduit since the severing of the string happens above all the cutter housings. Each housing cuts at least one conduit and the upper portion of the string brings with it the upper portion of the external conduit while the lower portions of each cut external conduit are retained in the cutter housings that remain downhole below the breakaway. In that manner there are no loose external conduit ends to interfere with and/or disturb subsequent fishing or other wellbore operations.

Growing community of inventors

Spring, TX, United States of America

Christopher W Guidry