An anti jam control system for mobile drilling machines is disclosed. The anti jam control system may include a method for automatically clearing a jam during an automatic drilling mode of a mobile drilling machine including a drill bit mounted on a drill string. The method may include: monitoring a feed rate of the drill bit during the automatic drilling mode; and automatically initiating an anti jam operation when the feed rate is below a predetermined feed rate threshold.

A control system for a drilling machine includes a vertically movable and rotatable drill string having a drill bit at a distal end, a hydraulic cylinder coupled to the drill string to provide a motive force for the vertical movement of the drill string, the hydraulic cylinder having an extend chamber and a retract chamber, a counterbalance valve selectively opening to fluidly couple the retract chamber to a drain, and a holdback valve selectively controlled to adjust the opening of the counterbalance valve based on a weight of the drill string.

A control system for a drilling machine includes a vertically movable and rotatable drill string having a drill bit at a distal end, a hydraulic cylinder coupled to the drill string to provide a motive force for the vertical movement of the drill string, the hydraulic cylinder having an extend chamber and a retract chamber, a counterbalance valve selectively opening to fluidly couple the retract chamber to a drain, and a holdback valve selectively controlled to adjust the opening of the counterbalance valve based on a weight of the drill string.

A system for automatic detection of drill pipe coupling on a drilling machine is disclosed. The system may include a rotary head, a drill pipe, a display, and a controller. The controller may be configured to: automatically identify a coupling or decoupling condition of the drill pipe; monitor motion and forces associated with the rotary head during a coupling or decoupling action of the drill pipe; automatically identify a fully coupled or fully decoupled condition of the coupling or decoupling action based on the monitored motion and forces of the rotary head; terminate the coupling action based on the identification of the fully coupled or fully decoupled condition; and update the display to indicate the fully coupled or fully decoupled condition of the drill pipe.

A hydraulic fracturing system has a pump driven by an electrically powered motor. The pump pressurizes fluid which is piped into a wellbore to fracture a subterranean formation. The pump and motor are mounted on a trailer that is hitched to a tractor. A platform assembly is mounted onto the trailer, and which is selectively moveable between deployed and stowed configurations. The platform assembly includes a platform, a lateral rail assembly mounted to the platform, and gates on the forward and aft ends of the platform. The rail assembly and gates define a safety barrier to prevent operations personnel from falling off the platform. In the stowed configuration the platform assembly is anchored in place over wheels on the trailer. In the deployed configuration, the platform assembly provides work surface so that operations personnel can readily access the pump on the trailer.

A walled work platform or man basket configured for positioning near a surface to be drilled, the platform comprising at least one drill assembly mounting point on a leading edge of the platform wall and a tension member connected to the platform wall adjacent the drill assembly mounting point and extending rearwardly for connection at a rear portion of the platform wall.

A hydraulic fracturing system has a pump driven by an electrically powered motor. The pump pressurizes fluid which is piped into a wellbore to fracture a subterranean formation. The pump and motor are mounted on a trailer that is hitched to a tractor. A platform assembly is mounted onto the trailer, and which is selectively moveable between deployed and stowed configurations. The platform assembly includes a platform, a lateral rail assembly mounted to the platform, and gates on the forward and aft ends of the platform. The rail assembly and gates define a safety barrier to prevent operations personnel from falling off the platform. In the stowed configuration the platform assembly is anchored in place over wheels on the trailer. In the deployed configuration, the platform assembly provides work surface so that operations personnel can readily access the pump on the trailer.

An improved debris catcher and choke system for receiving a pressurized fluid stream from wellbore operations where a controller can selectively place a plurality of debris catchers in debris catching or flushing modes, and the cleaned fluids from one of the debris catchers can be used to flush one of the other debris catchers. One or more embodiments relate to systems and methods for utilizing debris catchers and choke valves.

A hydraulic fracturing system has a pump driven by an electrically powered motor. The pump pressurizes fluid which is piped into a wellbore to fracture a subterranean formation. The pump and motor are mounted on a trailer that is hitched to a tractor. A platform assembly is mounted onto the trailer, and which is selectively moveable between deployed and stowed configurations. The platform assembly includes a platform, a lateral rail assembly mounted to the platform, and gates on the forward and aft ends of the platform. The rail assembly and gates define a safety barrier to prevent operations personnel from falling off the platform. In the stowed configuration the platform assembly is anchored in place over wheels on the trailer. In the deployed configuration, the platform assembly provides work surface so that operations personnel can readily access the pump on the trailer.

A retention, transportation and positioning cradle for a blowout preventer. The cradle includes a frame surrounding a circumference of the blowout preventer, with the frame having an opening for receipt or removal of the blowout preventer. A lift connecter mechanism on the frame connects to a lift mechanism. A pivoting gate encloses the opening on the frame. A plurality of rollers on an upper support surface of the frame engages the blowout preventer permitting rotation of the blowout preventer with respect to the cradle.