Schlumberger Technology Corporation

Other

Novatek Ip, LLC

Cameron International Corporation

Smith International, Inc.

Hall Labs LLC

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Jonathan D Marshall

David R Hall

Scott Steven Dahlgren

Scott Richard Woolston

David C Hoyle

Tyson J Wilde

Jordan Dane Englund

Jacques J Orban

Geoffrey Charles Downton

Neil Cannon

Edward George Parkin

Christopher Durrand

Daniel Manwill

Edmund Peter McHugh

Declan Elliott

Malcolm Roy Taylor

Jerry Allen Martino

Ghulam A Barkatally

Scott A Miller

R Craig Boswell

Michael George Azar

Nathan Elijah Fuller

Italo Elqueta

Brian Oliver Clark

Craig Boswell

Steven G Villareal

Paula Turner

Daniel Hendricks

Benjamin Jensen

Jim Shumway

Michael Pearce

Julien Steimetz

Clint William Philbrick

Dahlgren Scott

D Peter Johnson

Joe R Fox

Ronald B Crockett

Yuelin Shen

Jeff Jepson

Daniel Madsen

Geoff Downton

Nathan Nelson

Manoj D Mahajan

Nalin Weerasinghe

Balasubramanian Durairajan

Paul Schramm

Jad Mills

John J Pierce

Huntington Tracy Hall

Jordan Englund

Dennis Patrick Chesnutt

Joshua J Hanson

Ray R Sherrill

Dennis Patrick Chestnutt

A downhole drilling tool, forming part of a subterranean drilling system, may include at least one plate secured to an exterior of an elongate body. Electronics may be disposed between the plate and the body to be protected by the plate while still readily accessible. A dynamic element may be radially extendable from the plate to engage an inner wall of a borehole being drilled. If this radially-extendable element becomes worn or damaged from this engagement, the plate may be replaced. More expensive components of the drilling tool may be contained within the elongate body, rather than the plate, thus reducing replacement frequency. Additionally, plates including unique features may be employed at different times without altering the underlying elongate body.

Downhole tools having radially extendable elements

Embodiments of the present disclosure relate to a choke valve that includes a choke body, a choke trim disposed in the choke body, where the choke trim is configured to adjust a cross-sectional area of a flow path in the choke body to adjust a fluid flow through the choke valve, a needle of the choke trim disposed in the flow path of the fluid flow, where the needle includes a first portion having a superhard material, a seat of the choke trim, where the needle is configured to move along an axis extending through an opening of the seat to adjust the fluid flow through the choke valve.

Needle tip and seat for a choke valve

A bit used in a downhole environment has an active element that is movable relative to the bit. The bit is rotated in the downhole environment, and at least one downhole parameter is measured. The at least one downhole parameter is compared against a target parameter value, and when the at least one downhole parameter is beyond a threshold value of the target parameter value, the active element is selectively relative to the bit. Movement of the active element alters the proportion of the weight on the active element as compared to the other cutting structure of the bit. Changing the proportion of weight can be used to reduce the depth of cut of the cutting structure and to reduce or eliminate motor stall or stick-slip behavior.

Systems and methods of controlling downhole behavior

A tool, e.g. a downhole tool, utilizes at least one actuator which may be actuated rapidly between positions during operation of the tool. The actuator is moved via flow of an actuating fluid controlled by a main valve which, in turn, is controlled via a pilot valve. The pilot valve is operated to selectively control flow of the actuating fluid to the main valve so as to shift the main valve between desired operational positions.

Actuation valve system with pilot and main valves

A downhole steering system includes a substantially tubular housing, a shaft positioned within the substantially tubular housing, a first bearing and a second bearing, the first and second bearings being configured to support rotation of the shaft relative to the housing. The first bearing, the second bearing, the shaft, and the housing at least partially define a chamber therebetween. The system also includes at least one structure positioned axially between the first and second bearing and being configured to extend from an exterior of the housing in response to pressure communicated to the chamber.

Downhole steering system and methods

A downhole transducer assembly capable of being safely operated at a variety of pressures and depths may include a turbine rotatable by a fluid pressure differential rotationally fixed to a rotor in a generator. To reduce the rotational speed of the turbine and rotor, a pressure regulator may limit a fluid pressure differential by controlling the volumetric flow. One or more nozzles may be configured to automatically regulate a nozzle diameter, and therefore the pressure drop across the nozzle. A surge protector may be connected to the generator.

Downhole transducer assemblies and pressure range control therein

A downhole turbine assembly may comprise a tangential turbine disposed within a section of drill pipe. A portion of a fluid flowing through the drill pipe may be diverted to the tangential turbine generally perpendicular to the turbine's axis of rotation. After rotating the tangential turbine, the diverted portion may be discharged to an exterior of the drill pipe.

Downhole turbine assembly

A valve includes an exterior body and an interior body. The exterior body includes an ultrahard material, at least one exterior inlet, at least one exterior outlet, and a chamber inside the exterior body and in fluid communication with the exterior inlet and the exterior outlet. The interior body is located in the chamber within the exterior body and is moveable relative to the exterior body from an open configuration to a closed configuration. The interior body includes an ultrahard material, at least one interior inlet, and at least one interior outlet.

Controlling fluid flow through a valve

A downhole drilling apparatus, passing through a subterranean borehole, may mark an inner wall of the borehole with a marking element. A sensor, spaced axially from the marking element on the drilling apparatus, may subsequently sense the marking as it passes. A rate of penetration of the drilling apparatus may be calculated by dividing an axial distance, between the marking element and the sensor, by a time interval, between when the marking element marks the inner wall and when the marking is sensed by the sensor. Alternately, a second sensor, spaced axially from the first, may also sense the marking. A rate of penetration may then be calculated by dividing an axial distance, between the two sensors, by a time interval, between when the two sensors sense the marking.

Marking and sensing a borehole wall

A system for releasably securing a platform in a raised position is disclosed. A track is provided. An arm is connected at a first end to the platform. A second end, with a lug, is biased toward a side portion of the track. The lug is configured to ride in the track. As the platform is raised, the lug rides upward and enters the top portion and clears a first vertical wall, whereupon the lug rests in the depression and thus supports the platform in the raised position. As the platform is raised further, the lug clears a second vertical wall, whereupon the lug can ride downward in the side portion and through a bottom portion, past a door and out an open end of the bottom portion.

Systems for releasably securing a platform

A piston assembly may comprise a housing with a wall, and at least one chamber formed in the wall. A piston may be disposed within the chamber and at least one passageway may pass through the piston. At least one pin may be disposed within the passageway and attached to the chamber, and the piston may be free to translate relative to the pin.

Downhole tool piston assembly

A downhole transducer assembly capable of being safely operated at a variety of pressures and depths may include a turbine rotatable by a fluid pressure differential rotationally fixed to a rotor in a generator. To reduce the rotational speed of the turbine and rotor, a pressure regulator may limit a fluid pressure differential by controlling the volumetric flow. In other embodiments, one or more nozzles may be configured to automatically regulate a nozzle diameter, and therefore the pressure drop across the nozzle. In other embodiments, a surge protector may be connected to the generator.

Pressure range control in a downhole transducer assembly

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Provo, UT, United States of America

Jonathan D Marshall