One or more specific versions disclosed herein includes a power tong for rotating tubulars in wellbore operations comprising: a gear shaft having a non-threaded portion; a gear rotatably connected to the non-threaded portion of the gear shaft; a tong plate having an inner surface, an outer surface, and a gear shaft aperture, wherein an end of the non-threaded portion is disposed in the gear shaft aperture; and a shaft retainer that is removably coupled to the tong plate and abutted against the end of the non-threaded portion.

A sucker rod tong assembly for fastening together sucker rods to a rod coupling, where the assembly can include a two-stage mechanical drive mechanism. The first stage can connect an upper sucker rod to a lower sucker rod via a rod coupling. The first stage can be limited in mechanical ability to tighten the connection to a pre-set shoulder torque value. The second stage can then be hydraulically and mechanically sequenced, using a linear gear drive mechanism, to rotate a main tong pinion gear that can further rotate the sucker rod connection through a fixed circumferential displacement to a mechanical stop.

A power tong having a door that pivots in a vertical plane that is parallel to a plane that includes the axis of the tubular being made up or broken down by the power tong. The door is pivotally coupled to a power tong body for movement between an open position, that allows a tubular joint to be introduced through a throat and into a bay of the power tong, and a closed position that closes the bay of the power tong to enable the gripping and rotating components of the power tong to be engaged to grip and rotate the tubular joint introduced into the power tong. The power tong door includes structures that are engaged upon pivotal closure of the door with corresponding structures on the power tong body.

A gripper for gripping and spinning a pipe body includes: a rotatable input shaft; a gripping means for gripping the pipe body; a spinning means for spinning the pipe body while it is being gripped by the gripping means; a coupling means for connecting the rotatable input shaft to the gripping means and to the spinning means and for selectively engaging the gripping means and the spinning means ; and a braking means configured to engage the differential coupling means so as to selectively prevent at least one of the gripping means and the spinning means from being operated upon rotating the rotatable input shaft. The coupling means may comprise a differential coupling.

A drill rod gripping apparatus to grip and impart rotational motion to a drill rod including a sled axially mounted at a frame and having first and second jaws moveably mounted at the sled to allow a substantially linear lateral movement across the sled to and from one another. A plurality of rod engagers are mounted at each jaw with at least one of the engagers including an abrasive surface formed from a coating to increase the frictional force between the drill rod and the gripping apparatus.

An attachment that is configured for attachment to an arm of a piece of heavy construction equipment. The attachment is configured to rotate a section of pipe during break-out (i.e. disconnection or disassembly) from another section of pipe and/or make-up (i.e. connection or assembly) with another section of pipe. The attachment is configured to break the joint or torque the joint, unthread or thread pipe, and lift the pipe under the power of the heavy construction equipment.

An exit side pipe handling and vise tool. The tool may be suspended from an arm of a hydraulic machine and rotated and pivoted relative to the arm. The tool comprises two retainer assemblies, two vise assemblies, and a roller assembly each suspended from a linear frame. Each of the retainer assemblies is movable relative to the frame in a direction transverse to a length of the frame. The vise assemblies are in side-by-side configuration to break a connection between adjacent pipe segments. The roller assembly defines rollers having a spiral ramp disposed on an external surface to encourage axial movement of a pipe segment during rotation thereof.

A drilling rig includes a rig floor, first and second support structures, a mast, a lower drilling machine, a continuous drilling unit, an upper drilling machine, and an upper mast assembly. The rig floor includes a V-door defining a V-door axis extending perpendicularly from the side of the rig floor that includes the V-door. The first and second support structures define a traverse corridor having a traverse corridor axis, wherein the traverse corridor axis is perpendicular to the V-door axis. The drilling rig may be used for continuous drilling of a wellbore.

A drill rig having a longitudinal drilling axis, a front portion, and a rear portion can comprise a feedframe aligned with the longitudinal drilling axis, a first head assembly coupled to the feedframe and configured to rotate a drill string, and a rod holder proximate the front portion of the drill rig. A second head assembly can be movable on the feedframe along the longitudinal axis and can include a powered water swivel assembly comprising a spindle having an interior bore a drill rod connector at a first end of the spindle, a motor that is configured to rotate the spindle, a clutch configured to disengage the motor from the spindle, a gearbox that couples the motor to the spindle, and a water swivel that is configured to provide drilling fluid to the interior bore of the spindle.

A power tong assembly has a power tong and a backup for making up and breaking out of threaded tubular connections in tubulars such as drill pipe. The power tong assembly has an overall geometry, including but not limited to a jaw die shape, which reduces contact forces on the tubular, and on the tong body. Preferably, the dies have teeth which are angled to enhance engagement on the tubular. Crush zones or pockets may be provided on the dies, to permit deformation against hard banding on tubulars. In some embodiments, the tong jaws permit mounting the dies in different longitudinal (vertical) positions. In some embodiments, the fixed jaw within the backup has angled sidewalls which accommodate a broader tubular OD range. A cutout in the power tong cage lower plate permits a thicker tong rotary for a given overall tong assembly height.