A deep low-permeability high gassy seam drilling-slitting-sealing-fracturing drilling device includes a drilling control system, a high-pressure water power system, a water pressure grading control system and a fracturing and sealing control system. The drilling control system adjusts a drilling direction a water supply pressure of the drill rod, the high-pressure water power system supplies high-pressure water with different pressures to the device, and the water pressure grading control system ensures that a water pressure for flushing drill cuttings is less than 5 MPa, a water pressure for slitting in a direction perpendicular to a length of the drill rod is 25-35 MPa, a water pressure for sealing with a borehole sealing capsule is 35-40 MPa, and a water pressure for further pressure relief and permeability increasing of a coal seam is 40-50 MPa. The fracturing and sealing control system controls borehole sealing and hydrofracturing operations.

A power system and method for the adaptive power control of a drilling rig. While operating the internal combustion engine in its efficient operating range, unrequired mechanical power is converted to electrical power for storage, or use via the electrical bus on the rig. When the internal combustion engine is not required to provide mechanical or electrical power it is deactivated, and then reactivated—electrical storage on the system in the meantime providing electrical power to the bus as required. The power supply and management system could be retroactively fitted to an existing drilling rig by the incorporation of a generator and electrical storage device thereon. The system and method of the present invention allow for the optimized use of combustion-based power on a drilling rig while minimizing environmental emissions from the idle running of the at least one internal combustion engine.

The invention relates to an assembly (1) for forming a mast for guiding a drill drive in an HDD machine. The assembly comprises a mast body (10) with a generally U-shaped cross-section, a mast cover with a recessed surface (21), a set of two or more racks (30), first connecting means (24) for connecting the racks releasably to the mast cover and second connecting means (44) for connecting the racks releasably to the mast body. The racks together with the mast body and the mast cover in assembled state form a mast with a substantially closed contour.

The invention relates to an assembly (1) for forming a mast for guiding a drill drive in an HDD machine. The assembly comprises a mast body (10) with a generally U-shaped cross-section, a mast cover with a recessed surface (21), a set of two or more racks (30), first connecting means (24) for connecting the racks releasably to the mast cover and second connecting means (44) for connecting the racks releasably to the mast body. The racks together with the mast body and the mast cover in assembled state form a mast with a substantially closed contour.

A horizontal drilling machine with an impact device, including a support frame, an armored cable, a cable-straightening mechanism, a cable-feeding mechanism, a power head, a drill pipe, a rotating chuck, a damper, a fishing device with the impact device, a core tube and a thrust cylinder. One end of the thrust cylinder is hinged with the support frame, and the other end of the thrust cylinder is connected to the power head. The power head is arranged on a slid rail of the support frame. An active drill pipe of the power head is connected to the drill pipe. An end of the armored cable is connected to a control system, and the other end is connected to the fishing device in the drill pipe. A fishing head of the fishing device is connected to a spearhead of the core tube.

A horizontal drilling machine with an impact device, including a support frame, an armored cable, a cable-straightening mechanism, a cable-feeding mechanism, a power head, a drill pipe, a rotating chuck, a damper, a fishing device with the impact device, a core tube and a thrust cylinder. One end of the thrust cylinder is hinged with the support frame, and the other end of the thrust cylinder is connected to the power head. The power head is arranged on a slid rail of the support frame. An active drill pipe of the power head is connected to the drill pipe. An end of the armored cable is connected to a control system, and the other end is connected to the fishing device in the drill pipe. A fishing head of the fishing device is connected to a spearhead of the core tube.

A drilling machine for angled drilling has a platform having a longitudinal axis and a transverse axis. The drilling machine includes a tower for holding a drill string and a tower interface assembly connected to the platform, so that the tower interface assembly moveably supports the tower. The tower interface assembly is selectively moveable to tilt the tower in either a plane parallel with the longitudinal axis of the platform, or to tilt the tower in a plane parallel with the transverse axis of the platform, so that the tilted drill string can perform angled drilling in either position. Further, the tower interface assembly is selectively moveable to simultaneously tilt the tower in the plane parallel with the longitudinal axis of the platform, and the plane parallel with the transverse axis of the platform.

A drilling machine for angled drilling has a platform having a longitudinal axis and a transverse axis. The drilling machine includes a tower for holding a drill string and a tower interface assembly connected to the platform, so that the tower interface assembly moveably supports the tower. The tower interface assembly is selectively moveable to tilt the tower in either a plane parallel with the longitudinal axis of the platform, or to tilt the tower in a plane parallel with the transverse axis of the platform, so that the tilted drill string can perform angled drilling in either position. Further, the tower interface assembly is selectively moveable to simultaneously tilt the tower in the plane parallel with the longitudinal axis of the platform, and the plane parallel with the transverse axis of the platform.

A system for handling drill pipe on the exit side of the borehole in horizontal directional drilling operations. The system pulls the drill string out of the borehole and uses a top drive and pipe wrench to disconnect the individual segments of drill pipe from the drill string. Pipe gripping arms lift the disconnected drill pipe segment away from the rest of the drill string and release it into a nearby pipe rack. The components of the system are collapsible and can nest in one another during transport.

A system for handling drill pipe on the exit side of the borehole in horizontal directional drilling operations. The system pulls the drill string out of the borehole and uses a top drive and pipe wrench to disconnect the individual segments of drill pipe from the drill string. Pipe gripping arms lift the disconnected drill pipe segment away from the rest of the drill string and release it into a nearby pipe rack. The components of the system are collapsible and can nest in one another during transport.