Abstract: An oil well rotating cement head includes a swivel assembly and a plug launcher assembly. The swivel assembly includes a swivel shaft and a collar-shaped, outer swivel subassembly. The swivel shaft has an internal through bore and windows extending through the swivel shaft, and extends through the outer swivel subassembly. The swivel shaft and outer swivel subassembly enclose an inner annular gap in fluid communication with the windows of the swivel shaft. A material inlet formed in the outer swivel subassembly is in fluid communication with the inner annular gap. The plug launcher assembly is affixed to the swivel shaft and releasably holds one or more oil well cementing plugs. The plug launcher assembly provides fluid communication from the internal through bore of the swivel shaft to a bottom end of the plug launcher assembly.

Abstract: A bulkhead may include a fixed body having an exterior fixed body surface, a first cover having a first large region and a first small region, a second cover having a second large region and a second small region, a seal element, a first electrical contact, and a second electrical contact. The exterior fixed body surface may be perpendicular to a radius of the fixed body. The seal element may contact the exterior fixed body surface in a gap provided between the first cover and the second cover. The first electrical contact may extend through the first small region of the first cover. The second electrical contact may extend through the second small region of the second cover.

Abstract: A method of performing a well bore operation in a well bore includes connecting a window mill to a whipstock connector forming a tubular section, supporting a tool below the whipstock connector, running the window mill, the whipstock connector, and the tool into the well bore, and axially loading the tool to perform the well bore operation.

Abstract: A wellhead assembly with a gripping device for securing multiple components of the wellhead assembly is provided. In one embodiment, a system includes a wellhead housing mounted above a hollow body, such that an axial bore extends through the wellhead housing and the hollow body, and a wellhead hanger positioned within the axial bore. The system also includes a clamp that provides a first grip that secures the wellhead housing to the hollow body and a second grip that secures the wellhead hanger within the axial bore. The second grip includes elastic deformation, via the clamp, of at least one of the wellhead housing or the hollow body into tight engagement with an exterior of the wellhead hanger to secure the wellhead hanger at the location within the axial bore. Additional systems, devices, and methods are also disclosed.

Abstract: Embodiments of the present disclosure relate generally to underground horizontal directional drills and, more particularly, to aspects of drill operation, ground anchoring, and operator assistance features. In some embodiments, a drill is provided that includes an anchor assembly and/or a rear stabilizer that may pivot relative to a carriage frame of the drill. In other embodiments, a roller bearing system that permits the carriage to translate along the carriage frame is provided. In still other embodiments, rests to support the drill rod during makeup and breakout are described.

Abstract: A downhole tool includes a top sub-assembly that couples to a downhole conveyance and a housing. The housing includes a bore that extends through the housing from the top sub-assembly to a downhole end of the housing opposite the uphole end, and a plurality of compartments fluidly coupled to the bore. The downhole end of the housing including a tapered portion. At least one of the plurality of compartments includes at least one piston configured to extend away from the housing to forcibly expand at least a portion of a wellbore tubular based at least in part on a fluid pressure in the at least one compartment. The tool includes at least one hydraulic swage coupled to the housing and configured to expand to forcibly expand at least the portion of the wellbore tubular based at least in part on a fluid pressure in the bore.

Abstract: A running tool sets and cements a liner in a borehole. While the tool's bypass section is closed, a plug deployed to the tool diverts hydraulic pressure to set a liner hanger in the borehole. The setting plug is unseated, and the bypass section is switched opened by deploying another plug to an opening seat and shifting a control sleeve open relative to a bypass port. While the tool's packoff remains sealed in the hanger, cement pumped out the bypass port is bullheaded into a lap of the liner and borehole. When cementing is complete, the bypass section is switched closed by deploying another plug to a closing seat and shifting the control sleeve closed relative to the bypass port. The bypass section is then placed in a flow-through condition where fluid communication is reestablished through the tool to the liner by allowing fluid to flow past the plugs in the tool.

Abstract: A perforated filtration insert includes a head unit and a body portion having perforated side walls. The body portion is closed at one end by a cap such that fluid entering the body exits through the perforations in the side walls of the insert.

Abstract: A hydraulic percussion device comprising a piston mounted for reciprocal motion within a cylinder to impact a percussion bit and a control valve to control reciprocation of the piston. A valve pilot line is arranged to switch the control valve based on the position of the piston within the cylinder, wherein the valve pilot line is alternately connected, by the reciprocal movement of the piston, to high and low pressure lines (P, T) via an undercut in the piston. The undercut is located at a portion of the piston having a diameter less than the maximum sealing diameter of the piston.

Abstract: A downhole coupling mechanism for use in downhole tools that find application in wells exploited by a hydraulic refracturing process. The downhole coupling mechanism connects first and second tubular sections via a tensile load arrangement of wires located in complimentary grooves, a torque arrangement of interlocking lugs and notches on opposite ends, and a seal arrangement. The downhole coupling mechanism provides a thin walled coupling where a screw-threaded connection could not achieve the required tensile load, torque and sealing properties needed. Embodiments of a thin walled anchor and packer including the downhole coupling mechanism are described.

Abstract: A drilling apparatus in the form of a Kelly drilling rig including a drilling tool holder for holding a drill rod, in particular a Kelly bar, which can be rotatably driven by a rotary drive via a gearbox, wherein the gearbox includes a gearbox housing with multiple gearbox elements rotatably mounted therein. At least one plastically deformable shock absorber element for absorbing shocks is provided on at least one of the gearbox elements in the gearbox housing.

Abstract: A stand-building system and method for a drilling rig, of which the system includes a casing preparation skid configured to prepare a casing joint for connection to another casing joint, and a casing stand assembly skid configured to receive the prepared casing joint and to connect together the prepared casing joint with one or more other joints so as to form a casing stand. The casing preparing skid and the casing stand assembly skid are horizontally aligned with and extend parallel to one another and to a catwalk of the drilling rig, and the casing stand assembly skid is configured to deliver the casing stand to the catwalk.

Abstract: A method automatically for adjusting the hoist speed of a drill is disclosed. The method includes determining the mast angle of the drilling implement relative to a work surface, and changing the hoisting speed of the drill implement depending on the mast angle.

Abstract: A method includes running a workover liner, having a workover liner top end, into the workover well, installing a crossover bottom end of a crossover to the workover liner top end, installing a crossover top end of the crossover to a tieback casing bottom end of a tieback casing, running the workover liner, crossover, and tieback casing into the workover well such that the workover liner is set within the production liner, the crossover is set above the liner hanger of the production liner, and the tieback casing is set within the production casing and extends to a surface location. The method further includes cementing the workover liner, crossover, and tieback casing with cement and leaving behind a shoe track. The cement holds the workover liner, crossover, and tieback casing in place within the workover well and prevents leakage of fluids out of the workover well.

Abstract: An amorphous-based material component may be incorporated into a liner for a shaped charge used in perforating a wellbore casing. Other components of the shaped charge and/or perforating gun that accommodates the shaped charge may be of amorphous-based materials. Further, the liner and other components of the shaped charge may be manufactured by way of three dimensional printing. Indeed, a multi-material three dimensional print application may be utilized to form shaped charge components simultaneously along with an entire perforating gun system.

Abstract: A flow control system for a well includes a primary safety valve and a secondary safety valve disposable within a valve body of the primary safety valve. The secondary safety valve may include a control line port for receiving control fluid pressure from the same control line as the primary safety valve. A choke in fluid communication with the control line port delays a closing of the secondary safety valve relative to a closing of the primary safety valve in response to a decrease in the control fluid pressure.

Abstract: A subsurface safety valve assembly that includes a valve housing comprising a valve seat with a circumference and a seat seal surface. The valve assembly also includes a flapper rotatably connected to the valve housing and comprising a flapper seal surface. The flapper is rotatable into sealing engagement with the seat seal surface in a closed position to form a circumferential surface-to-surface seal. The valve assembly also includes a dovetail groove cut into the seat seal surface or the flapper seal surface and a seal ring held within the dovetail groove and positioned to form a seal against the seal ring when the flapper is in the closed position. The seat seal surface, the flapper seal surface, the dovetail groove, and the seal ring are shaped such that the load on the seal ring is uniform around the seal ring when the flapper is in the closed position.

Abstract: A mining or construction vehicle comprising an extendable boom comprised of a first and a second telescopic section extending in a longitudinal direction, wherein the first telescopic section is arranged to be connected to the mining or construction vehicle and a hydraulic device is arranged to be connected to a mounting device at a free end of the second telescopic section, wherein a hydraulic cylinder is arranged in connection to the extendable boom to govern extension of said extendable boom. Hydraulic conduit for supply of hydraulic fluid to the hydraulic device on the mounting device are arranged through the length of the extendable boom.

Abstract: A system including an elevator to move a tubular, the elevator including two or more remotely operable latches that can configure the elevator to handle various tubular diameters. A portion of the latches can be laterally offset from each other and another portion can overlap adjacent latches. The elevator can be Atmosphere Explosible (ATEX) certified or International Electrotechnical Commission for Explosive Atmospheres (IECEx) certified according to explosive (EX) Zone 1 requirements with an electronics enclosure contained within a sealed chamber. The elevator can be rotated greater than 90 degrees relative to a pair of links that support the elevator. The elevator can use rotary actuators to operate the latches and rotate the housing of the elevator.

Abstract: A system for an adjustably flexible downhole tool includes first and second connector ends each configured to connect to adjacent downhole tools and a shaft extending between the first and second connector ends. The shaft is configured to bend in response to passing through curved portions of a wellbore. The adjustably flexible downhole tool also includes an outer sleeve disposed around at least a portion of the shaft and extending from the first connector end in a direction toward the second connector end and at least one adjustable member configured to move axially, with respect to the shaft, from a first position to a second position to increase bending stiffness and/or torsional stiffness of the adjustably flexible downhole tool. The at least one adjustable member at least partially restrains bending of the shaft in the second position.