Weatherford Technology Holdings, LLC

Petrowell Limited

Impact Selector Limited

Geodynamics, Inc.

Sentergy Limited

Isle Tools Limited

Kaseum Holdings Limited

Andrew John Elrick

Iain Morrison Macleod

Stephen Reid

Iain Morrison MacLeod

Paul Andrew Church

Stewart Gordon George Christie

Andrew Fraser

Peter Alan Joiner

Philip Cg Egleton

John Thomas Hardesty

Dennis E Roessler

Santiago Galvez Porta

Philip C G Egleton

Alan Craigon

Patrycjusz Bartlomiej Proszynski

Steven Reid

David Jenner

Paul Church

A downhole tool () comprises a power control module (), which includes a battery pack () for supplying power to components of the tool, and an electronic control circuit () for controlling the supply of power by the battery pack. The electronic control circuit () and battery pack () are contained within a housing () that allows their insertion and removal as a single unit. The tool () also comprises an electric motor () for powering a gear assembly (), and a braking system comprising an electrical and a magnetic brake for braking the motor () when required. The gear assembly () comprises two or more stages (), each having a sun gear () with a respective diameter, and each sun gearhaving a raised convex dimple (LD,UD,LD,UD) that is in constant touching contact with the adjacent sun gear's () raised convex dimple (LD,UD,LD,UD), allowing load experienced by the tool () to be transferred along a load path including the dimples (LD,UD,LD,UD), reducing vibrations and shocks.

Downhole tool

A roller toolthat can be connected into a string for deployment into an oil or gas well includes at least two rollers or wheelslocated on each side of the roller tool, with axes of rotation that are perpendicular to the axis of the roller tool. The roller tool further includes at least two interconnecting tubular portions, where one tubular portioncomprises a mandrelthat connects to another tubular portion. An annular hubis fitted over the mandreland the rollersare connected onto the hub. The tubular portionscomprise circumferential sleeve sectionsthat partially extend over the rollersand resist detachment of the rollersfrom the roller tool. The roller toolcan aid passage of a string through a well by holding the string away from the walls of the well and reducing frictional contact.

Roller tool

A flow restrictor for restricting flow in an annulus, the flow restrictor comprising a body and a restrictor assembly mounted on the body, wherein the restrictor assembly is actuatable between a run-in configuration and a set configuration in which at least a portion of the restrictor assembly is radially splayed to thereby substantially restrict flow in the annulus, and wherein the flow restrictor is actuatable by fluid flow over the restrictor assembly above a threshold flow rate to actuate the restrictor assembly from the run-in configuration to the set configuration.

Flow restrictor

A connection mechanism () comprises first and second components () which can be selectively coupled together, one of the first or second components comprises a locking member () which is moveable between a first state and a second state, the other of the first or second component comprises means () for initially moving the locking member from the first to the second state as the first and second components are initially drawn together and means () for returning the locking member to the first state once the first and second components are fully engaged together to prevent disengagement of the first and second components.

Connection mechanism

A time delay apparatus for use with a downhole tool in a wellbore casing. In an exemplary embodiment, the apparatus includes an electronic circuit comprising a timer, a fusible link, a split spool device that includes a center pin held in place in a restrained position with a spool and a spring element surrounding the spool. A pressure applied to a trigger device, such as a rupture disk, activates a pressure switch and starts a timer, configured with a preset countdown time, in the electronic circuit. On expiration of the timer, the timer block of the electronic circuit generates a signal to cause breaking of the fusible link and releasing of the spring element such that the center pin of the split spool travels to a functional position and activates the downhole tool.

Electronic time delay apparatus and method

A controller () for mounting on or within a downhole tool () is provided and comprises a touch operated control device () having a touchable surface () mounted within an aperture () formed in a sidewall () of the downhole tool () such that the touchable surface () is outwardly facing and is the radially outermost component of the controller () such that an operator may touch the touchable surface () without having to disassemble the downhole tool (). The controller () also comprises one or more microprocessors () in electrical or electronic communication with the touch operated control device (), where the microprocessor () is capable of being programmed by an operator to instruct the downhole tool () to actuate wherein the operator instructs the controller () by touching the touchable surface () with one or more distinct touches.

Touch controller for a downhole tool

The invention relates to an interlock and setting section for a downhole tool system, the interlock and setting section comprising: a shifting profile located within a throughbore of the downhole tool system, wherein the shifting profile is capable of being coupled to by a shifting tool in the throughbore of the downhole tool system, in order to move the shifting profile with respect to the downhole tool system; a load connector member coupled to the shifting profile and further coupled to a load setting member arranged to deliver a load to a tool as required; wherein there is further provided a selective locking mechanism to selectively lock at least the load setting member to at least one of the downhole tool system and the shifting profile.

Interlocking and setting section for a downhole tool

An expandable slips system for use on a mandrel having a longitudinal axis, the mandrel adapted to be run into a borehole, the expandable slips system comprising: at least one slip which in use is adapted to be moved outwardly from the longitudinal axis of the mandrel to grip against and thereby engage a downhole formation, the at least one slip comprising at least one angled member; at least one cone member for engagement with the at least one slip, the cone member comprising at least one angled member for engagement with the at least one angled member of the slip; and at least one cone member expansion device for engagement with the at least one cone member, the cone member expansion device comprising at least one angled member for engagement with another at least one angled member of the cone member.

Expandable slip system

A lock ring for use as a one way movement restrictor between two telescopingly arranged tubulars to permit movement in one direction and prevent movement in the other direction of one tubular relative to the other tubular; the lock ring comprising: a profile having one or more formations formed on the outer circumference for engagement with a suitable formation profile formed on the inner circumference of the outer telescopic tubular; and one or more teeth formed on its inner circumference, the teeth being adapted to dig into the outer surface of the inner telescopic member; such that the profile having one or more formations on the outer circumference and/or the said one or more teeth permits the lock ring to be pushed along the outer surface of the inner telescopic tubular when pushed by the outer telescopic tubular in one direction; and is further adapted to dig the teeth into the outer surface of the inner telescopic tubular when the push in said one direction is removed or when it is pushed by the outer telescopic tubular in the other direction in order to prevent the lock ring from moving in the other direction relative to the inner telescopic tubular.

Apparatus and method for setting a downhole anchor and related telescopic joint

The tubing section comprises an outer skin () defining at least one perforation (), an inner skin (), the inner and outer skins being arranged to define a tubing annulus therebetween and an access device () to selectively provide fluid communication between the tubing annulus and a tubing section throughbore.

Tubing section

A setting tool () for use in a downhole wellbore is described as having a hydraulic fluid pumping mechanism () for providing pressurized hydraulic fluid. A piston mechanism () is moveable by said pressurized hydraulic fluid acting upon a portion of the piston mechanism (). A resetting mechanism () is provided which when operated releases the pressurized hydraulic fluid from acting upon said portion of the piston () and which results in the resetting of the setting tool (). In addition, a method for resetting a setting tool () is described including the steps of:

Downhole apparatus

A tubing section coupling comprises a first tubular portion and a second tubular portion () having an external surface adapted to slidingly engage an internal surface defined by the first tubular portion. The first and second tubular portions () are axially restrained by means of a fixing device adapted to releasably connect the first and second tubular portions together. The first and second tubular portions () each define a profile; the profiles are adapted to be connected to rotationally restrain the tubular portions.

Tubing section coupling

An apparatus for controlling the flow of downhole fluids comprises a body having a throughbore and at least one port extending through a sidewall of the body to enable fluid communication between the throughbore and an exterior of the body. The apparatus comprises a flow control device for controlling the flow of fluids through the port. The flow control device is arranged to change configuration between a closed configuration in which fluid flow through the port is restricted and an open configuration in which fluid flow through the port is permitted. The apparatus further comprises an actuator mechanism associated with the flow control device for selective actuation of the flow control device to change the configuration of the flow control device between the closed and open configurations. The apparatus further comprises a locking device to lock the configuration of the flow control device, and an unlocking mechanism to unlock the locking device and to permit the actuator mechanism to change the configuration of the flow control device.

Growing community of inventors

Peterhead, United Kingdom

Andrew John Elrick