General Downhole Tools, Ltd.

Other

Orion Drilling Company

Jovan Vracar

David Devlin

Milan Rajic

Michael Harvey

Vladimir Jorgic

Mike Harvey

Ozzie Rios

David Gibson

Dave Devlin

Wayne Squires

Philip Seely

A downhole tool includes an outer, intermediate and inner tubular bodies. The intermediate tubular body has vanes and female splines. The inner tubular body in the intermediate tubular body includes a load nut and male splines that rotationally couple with the female splines to allow relative axial movement between the inner tubular body and the intermediate tubular body. The male and female splines can rotate inside the outer tubular body for an angle determined by movement of the vanes between longitudinal ribs in the outer tubular body. The inner tubular body has an extended position. When weight is applied on the drill bit (WOB), the inner tubular body has a retracted position where it is pushed inward to compress springs. This causes the inner tubular body and the intermediate tubular body to rotate for a selected angle relative to the outer tubular body.

System, method and apparatus for hydraulic downhole stick-slip mitigation

A Programmable plug system for accessing and isolating formations during hydraulic fracturing, consisting of a Programmable Plug and plurality of Sliding Sleeve Valves installed in the casing string of a wellbore, wherein Programmable Plug travels, downwards or upwards through the casing and Sliding Sleeve Valves, wherein during its travel the Programmable Plug detects and counts each sleeve using on-board sensors, electronics and software and wherein the Programmable Plug utilizes detected information to locate, activate and engage itself into the Sliding Sleeve Valves, one at a time, from the top or from the bottom, without locking in, according to programmed sequence (to open, close or bypass) stored in the on-board memory. When engaged to the Sliding Sleeve Valve from the top, the Programmable Plug opens the Sliding Sleeve Valve by applying the pump pressure from the surface, thus providing access to the zone adjacent to the Sliding Sleeve Valve while sealing and isolating the zones below the Sliding Sleeve Valve. Applying pressure in opposite direction, or pulling on by the wire line or slick line winch connected to the Programmable Plug causes the Programmable Plug to disengage itself and travel up the casing string towards next Sliding Sleeve Valve where setting, actuation, and opening is repeated for that Sliding Sleeve Valve. To close open Sliding Sleeve Valve, Programmable plug engages Sliding Sleeve from the bottom side and pushed up by well pressure from the bottom or pulled upwards by the slick line or wire line winch, thus closes the Sliding Sleeve Valve.

Programmable plug system and method for controlling formation access in multistage hydraulic fracturing of oil and gas wells

A system, method and apparatus for a clutch for a well string can include a tubular member, a mandrel, a top sub and a bottom sub. A sleeve can be located between the tubular member and the mandrel. The sleeve has an engaged position wherein an inner sleeve spline is coupled to the mandrel spline, and a disengaged position wherein the inner sleeve spline is uncoupled from the mandrel spline. The sleeve has an outer sleeve spline that is coupled to the tubular spline in the engaged position and the disengaged position. A spring in the tubular member can bias the sleeve from one position to another position. The sleeve can be configured to be moved between the positions to overcome the spring bias.

System, method and apparatus for well string clutch

The present invention includes a load bearing mid-section weldment connected between a pair of telescoping incremental stepper assemblies to create a clearance space beneath the load bearing mid-section weldment and the telescoping incremental stepper assemblies thereby allowing the heavy machinery substructure to move and work over ground obstructions. Each telescoping incremental stepper assembly includes a bridge weldment connected between a pair of telescoping legs. Each telescoping leg includes at least one pair of nested leg sections and a linear actuator to adjust the length of the telescoping leg. Each telescoping leg further includes a fixed foot and an articulating pad assembly. The articulating pad assembly is configured to alternatively lift the foot and itself from the ground and moves the foot and itself relative to one another to move the heavy machinery substructure in incremental steps over the ground and any obstructions. The length of each telescoping leg is user adjustable and defines the height of the clearance space. The width of the load bearing mid-section defines the width of the clearance space. The length of the incremental stepper assembly defines the depth of the clearance space.

Heavy machinery substructure for traversing and working over ground obstructions

Growing community of inventors

Calgary, Canada

Jovan Vracar