A mast assembly that includes a mast and a hydraulic circuit for moving the mast. The hydraulic circuit includes a primary hydraulic cylinder coupled to the mast to rotate the mast about a pivot axis and a secondary hydraulic cylinder extending from a rod end to a cap end that is fluidly coupled to the primary hydraulic cylinder. A directional valve is fluidly coupled between the primary hydraulic cylinder and secondary hydraulic cylinder to keep a pressure on the cap end of the secondary hydraulic cylinder greater than the pressure on the rod end of the secondary hydraulic cylinder during all operating conditions.

The present disclosure provides a device for power transmission and signal transfer between the stator and the rotor of a screw drilling tool. The present disclosure can replace the wireless communication technique between the rotary steering tool and the integrated MWD/LWD, omit the upper mud generator above the rotary steering tool, and thereby realize power transmission and signal transfer between the stator and the rotor of the screw drilling tool.

Provided is a wellbore tractor and method for operating a well system. The wellbore tractor, in one aspect, includes a base member, and one or more turbines fixed to the base member for rotating the base member in a first rotational direction based upon a first direction of fluid flow. The wellbore tractor, according to this aspect, further includes one or more wellbore engaging devices radially extending from the base member, the one or more wellbore engaging devices contactable with a surface of a wellbore for displacing the base member and one or more turbines axially downhole as the one or more turbines rotate in the first rotational direction.

Provided is a wellbore tractor and method for operating a well system. The wellbore tractor, in one aspect, includes a base member, a hydraulically powered drive section coupled to the base member, and one or more turbines coupled to the hydraulically powered drive section for powering the hydraulically powered drive section based upon fluid flow across the one or more turbines. The wellbore tractor, according to this aspect, further includes one or more wellbore engaging devices radially extending from the hydraulically powered drive section, the one or more wellbore engaging devices contactable with a surface of a wellbore for displacing the wellbore tractor axially downhole.

Embodiments of the invention generally provide a tube centralizer. The tube centralizer generally includes a base structure, and at least one rubber fin formed on the base structure, wherein the at least one rubber fin is configured to separate an inner pipe to which the tube centralizer is attached from an outer pipe.

A coiled tubing transport unit includes a coiled tubing reel unit, a guide sleeve coupled to the coiled tubing reel unit, and a corresponding arm coupled to the coiled tubing transport unit, wherein the arm is retractable or extendable from the guide sleeve, and a hydraulic cylinder coupled between the coiled tubing reel unit and the transport unit. The arm retracts or extends from the guide sleeve when the hydraulic cylinder is actuated to push or pull against and move the coiled tubing reel unit along a length of the coiled tubing transport unit.

A motorized release device for a downhole device includes one or more dogs disposed within a guide of the downhole device. The one or more dogs may move radially within the guide relative to a central axis of the motorized release device, such that the one or more dogs may move between an engaged position and a disengaged position. The motorized release device also includes a cam that is rotatable about the central axis, such that the cam may move between a locked position and an unlocked position. The cam may block the one or more dogs from moving to the disengaged position while the cam is in the locked position. The motorized release device may also include an electronics board. The electronics board may attach to a motor that rotates the cam between the locked position and the unlocked position.

A machine comprising a frame supported on a movable carrier. A first actuator is adapted to actuate a boom coupled to the frame. A first sensor generates signals indicative of a spatial orientation of the boom. At least one second actuator actuates a drilling work device coupled to the boom. A second sensor generates signals indicative of a spatial orientation of the drilling work device. A controller receives signals indicative of the spatial orientation of the boom and the drilling work device and actuates at least one of the first actuator and the second actuator through predetermined sequential steps to automatically position the machine in a default configuration. The controller further receives signals indicative of data corresponding to at least one drilling hole and automatically positions the machine in an operating configuration.

A directional drill securing device and associated methods are shown. Securing devices and methods shown include a plurality of staking devices on a single lateral side of a directional drill. Using examples shown, a lower force is required to drive multiple staking devices than would be needed for a larger staking device of equivalent area.

The present invention relates to a multi-functional drilling experiment platform, which consists of a gantry, a hydraulic cylinder, a power swivel and a platform base. The gantry mainly realizes the control of the drill string during the drilling-in process. In order to simulate the vertical well, the inclined well, and the horizontal well, the drilling machine needs to rotate between 0 and 90. The rotation of the gantry is realized by the extension and contraction of the hydraulic cylinder. The platform base is used to set up the gantry and the hydraulic cylinder, bearing the pulling, pressing and twisting loads of drilling experiments. Also, the platform base can move along the track to achieve different types of experiments. The multi-functional drilling experiment platform of the present invention realizes the load simulation experiment of the drilling machine at different angles using the gantry and the hydraulic cylinder.