Halliburton Energy Services, Inc.

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Luis Enrique Quintana

Philippe Fanuel

Olivier Mageren

Erik Dithmar

Jean-Pierre Lassoie

Erik Stein Moi

Stein Eric Moi

Olivier Christophe Roche

Georges Dechief

Alexis Chris Van Lysebeth

Erik Moi Stein

Phillipe Fanuel

A flexible reamer housing includes a tubular central portion including a tool bay with an aperture to allow a reamer cutter arm within the tool bay to move radially outward through the aperture, and tubular first and second auxiliary portions arranged toward opposite ends of the central portion. The first and second auxiliary portions each include a first stiffness that is less than a second stiffness of the central portion.

Flexible tool housing

A downhole tool may include a generally hollow piston having a trigger element extending therefrom, the piston configured to slide along an axial cavity extending through a tubular body of the tool. The trigger element may move from a first position where the trigger engages a support on the body and the piston is fixed, to a second position where the trigger disengages and the piston is released. The tool may also include a generally tubular relief sleeve releasably coupled with the piston using a shear pin, while the trigger element is in the first position, and disposed between the trigger and an extension of the piston, to allow the sleeve to slide between the trigger and the extension after shearing of the pin. The piston, sleeve and pin may be configured to allow the sleeve to release from the piston in response to the shearing of the pin.

Device for actuating a bottom tool

In accordance with an embodiment of the present invention, a drilling tool includes a tubular body defining a longitudinal axial cavity extending therethrough and defining at least one cutter element recess. The drilling tool also includes a cutter element at least partially disposed within the at least one cutter element recess and includes at least first and second cutting arms at least substantially disposed within the cutter element recess in a retracted position. The first and second cutting arms are operable to move from the retracted position to an extended position in which the first and second cutting arms extend at least partially beyond a periphery of the tubular body. The first and second cutting arms and the tubular body enclose a space when the first and second cutting arms are in the extended position.

Reaming and stabilization tool and method for its use in a borehole

An assembly for sidetracked drilling in a wall of a borehole previously drilled or cored in a formation includes a guide element and an expansible device fixed to the front end of the guide element operable to be selectively expanded by an actuation means. A sidetracking channel is formed in the guide element in alignment with an internal space, upstream of the expansible device in the direction of advance. A longitudinal cavity is formed in the guide element parallel to the longitudinal axis and arranged to allow passage from the internal space to the actuation means of the expansible device. Within the internal space of the guide element, an external tube of the core barrel includes a core bit fixed to the front end of the external tube and arranged to slide, after having been released, in the internal space and in the sidetracking channel and then progress to the formation.

One-step directional coring or drilling system

The invention concerns a method and a device for coring and/or drilling through a wall of a bore hole, to deflect transversely from a longitudinal direction of the hole, further comprising selecting a core barrel () equipped with a core bit () having an inner gauge bore (), an arrangement, in the core barrel (), of an abrasion resistant internal guide (), which is internal at least with respect to the bore () so that the bit () can move along guide (), and is designed to deflect the bit () along a desired deflected path, start-up of the coring process with bit () and guiding the bit () through co-operation between its bore () and the guide ().

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Jette, Belgium

Luis Enrique Quintana