The invention relates to a vessel comprising a moonpool, a firing line hoist system, a stationary main deck for storing equipment and/or tubulars, and a mobile working deck having a front deck section and a rear deck section. The working deck can be moved between a working position and a transporting position. A rear deck lift system is provided for lifting and lowering a rear deck section between the working position and the transporting position. A front deck guide system is provided for guiding a front deck section in a substantially horizontal direction between the working position and the transporting position.

A method of building and operating a land-based drilling rig with a high-capacity mast include providing a platform collapsed on a substructure over a proposed well drilling location and building the high-capacity mast in a horizontal condition by attaching a lower portion of the high-capacity mast to the platform. The high-capacity mast having an opening formed therein sized to accommodate four Range 2 pipes or three Range 3 pipes. The high-capacity mast may be raised from the horizontal condition to a vertical condition by pushing the side of the high-capacity mast to pivot the high-capacity mast about a pivot point on the platform. The platform may be raised from a collapsed condition to a raised condition over the substructure. Some implementations include dual racking boards on the high-capacity mast.

An assembly for driving excavating equipment for an excavating machine includes a drive assembly sliding along a mast of a machine, for driving the drilling equipment; and an actuator. The drive assembly includes a first structure with guide members for sliding along the mast; and a second support structure to support the drilling equipment. The first and second support structures are mutually movable. The drive assembly has at least two operating configurations, for setting at least two excavation center-to-center distances. In the operating configurations of the drive assembly, the first and second support structures are mutually rigidly and directly constrained. While switching between operating configurations, the first and second support structures are always directly mechanically constrained to each other. The actuator controls movement between the first structure and the second support structure and carries out further operative functions for driving parts of an excavating machine or drilling equipment.

A method of building and operating a land-based drilling rig with a high-capacity mast include providing a platform collapsed on a substructure over a proposed well drilling location and building the high-capacity mast in a horizontal condition by attaching a lower portion of the high-capacity mast to the platform. The high-capacity mast having an opening formed therein sized to accommodate four Range 2 pipes or three Range 3 pipes. The high-capacity mast may be raised from the horizontal condition to a vertical condition by pushing the side of the high-capacity mast to pivot the high-capacity mast about a pivot point on the platform. The platform may be raised from a collapsed condition to a raised condition over the substructure. Some implementations include dual racking boards on the high-capacity mast.

A snubbing jack including a jack assembly including a base plate, a traveling plate, an axis extending through the base plate and the traveling plate, and a plurality of piston-cylinder assemblies, a rotary drive including a rotary base and a hub, wherein the rotary drive is configured to rotate the hub relative to the rotary base, a clamp coupled to the rotary base and configured to grip a first tubular member, a power tongs coupled to the rotary base and configured to grip a second tubular member and to rotate the second tubular relative to the rotary base, and a torque transfer device coupled between the rotary drive and the jack assembly and configured to allow the rotary drive to move axially relative to the base plate and configured to restrict rotation of the rotary drive relative to the jack assembly.

A mobile, coiled tubing drilling apparatus includes a non-rotating mast on a mobile platform. The mast has mounted thereon an injector, a coiled tubing reel having a tubing pay-off point associated therewith, and a tubing control system. The tubing control system is located between the reel and the injector, and includes a tubing abutment adjacent the tubing pay-off point for applying an opposite bend to the tubing during pay-out of the tubing. The reel is mounted for horizontal (x,y) movement such that, during pay-out of the tubing, the tubing pay-off point can be maintained generally above the injector, and can also be moved towards or away from the tubing abutment.

A system, includes a movable platform slidingly coupled to one or more supports and configured to be selectively moved towards a drill floor and away from the drill floor. The system also includes a roughneck disposed on the movable platform and configured to make up or break out a threaded joint between a first tubular segment and a second tubular segment. The system additionally includes a support member disposed on the movable platform and configured to support one of the first tubular segment or the second tubular segment as the movable platform is selectively moved towards a drill floor or away from the drill floor.

A mobile, coiled tubing drilling apparatus with a rotary drill head, includes a non-rotating mast on a mobile platform. The mast has mounted thereon an injector below a coiled tubing reel. The injector defines an operational axis for the coiled tubing. The rotary drill head is pivotally mounted on the injector so as to be movable between a retracted position away from the operational axis and an operating position in line with the operational axis. The rotary drill head includes a top swivel for non-rotating connection to the coiled tubing and a bottom spindle for rotating connection to a pipe section. The top swivel and the bottom spindle provide fluid communication between connected coiled tubing and connected pipe section during operation.

A system for performing a drilling operation includes a top drive, an adapter configured to be connected to the top drive, and a kelly configured to be connected to the adapter. The top drive is configured to lift the kelly, move the kelly laterally with respect to a well center, and position the kelly in a rotary device.

An assembly for driving excavating equipment for an excavating machine includes a drive assembly sliding along a mast of a machine, for driving the drilling equipment; and an actuator. The drive assembly includes a first structure with guide members for sliding along the mast; and a second support structure to support the drilling equipment. The first and second support structures are mutually movable. The drive assembly has at least two operating configurations, for setting at least two excavation center-to-center distances. In the operating configurations of the drive assembly, the first and second support structures are mutually rigidly and directly constrained. While switching between operating configurations, the first and second support structures are always directly mechanically constrained to each other. The actuator controls movement between the first structure and the second support structure and carries out further operative functions for driving parts of an excavating machine or drilling equipment.