A hybrid hydraulic fracturing system having a driveline that includes an internal combustion engine having a crankshaft, a motor operatively coupled to a forward end of the crankshaft, a transmission operatively coupled to a rearward end of the crankshaft, a driveshaft operatively coupled to the transmission, and a fracturing pump operatively coupled to the driveshaft. The system also includes a power source electrically coupled to the motor for supplying power to the motor and a controller configured to power condition the driveline by operating the driveline in a first mode in response to a load change resulting in an increased power demand on the driveline, where the first mode includes providing torque from the internal combustion engine to drive the fracturing pump and selectively providing torque from the motor to a crankshaft of the internal combustion engine to assist the internal combustion engine in driving the fracturing pump.

A rotary dynamic system includes: a drill pipe; a bearing coupled at a first axial end to the drill pipe; and an outer sleeve coupled to a second axial end of the bearing. The outer sleeve rotates independently of the drill pipe.

An extraction systems in the oil sector, in particular to the equipment intended for the completion of the wells after their drilling; more in particular, the system relates to a safety valve for artificial lifting wells driven by reciprocating downhole rod pumps.

The present invention discloses a continuous high-power turbine fracturing equipment, including a turbine engine, a reduction gearbox, a drive shaft and a plunger pump, the turbine engine is arranged in the same straight line with the reduction gearbox, the reduction gearbox is connected to the plunger pump through the drive shaft, the angle of the drive shaft is between 2° and 4°. The beneficial effects are as follows: chassis T1 materials are selected to provide a stable working platform for the equipment; the turbine engine is arranged in the same straight line with the reduction gearbox, the drive shaft is disposed between the reduction gearbox and the plunger pump, and the angle of the drive shaft is between 2° and 4°, ensuring stable and efficient transmission of the turbine engine, thus reducing the incidence of failure; a lubrication system driven by an auxiliary power system ensures that the turbine engine, the reduction gearbox and the plunger pump all run under appropriate circumstances, and a dual lubrication system ensures that the plunger pump achieves a power operation continuously at 5000 HP or above; with all the above technical means, the requirements of continuous high-power operations for the fracturing equipment would finally be satisfied.

A bottom hole assembly is provided, having a housing having a housing lubricant channel; a motor having a rotor and a stator; a mandrel within the housing that rotates when drilling mud flows through the motor; a flex shaft within the housing that includes an internal fluid path for drilling mud to flow into the mandrel; a bushing between the housing and the mandrel having a spiral lubricant channel configured to pump lubricant while the mandrel rotates, such that lubricant in the housing lubricant channel returns to the spiral lubricant channel; first and second on-bottom thrust bearings; and a two stage rotor catch housing attached to the motor and having an internal shoulder, a rotor catch shaft, and a rotor catch nut attached to an upper end of the rotor catch shaft.

An assembly including a seal adapter having a bearing retainer and a bearing, wherein the bearing retainer is cylindrical and has a bearing retainer inside surface and a bearing retainer outside surface, and wherein the bearing retainer comprises a cavity along the bearing retainer inside surface, and wherein the bearing is cylindrical, wherein the bearing has a bearing outside surface, a bearing inside surface, a bearing front surface and a bearing back surface, and wherein, when assembled, the bearing is at least partially within the cavity, such that the bearing outside surface and the bearing back surface are in contact with the bearing retainer inside surface.

Tilting pad bearing assemblies and apparatuses are disclosed herein. The disclosed tilting pad bearing assemblies and apparatuses may be employed in downhole motors of a subterranean drilling system or other mechanical systems. In an embodiment, a bearing assembly or apparatus includes a support ring and a plurality of tilting pads. Each tilting pad is tilted and/or tiltably secured relative to the support ring. In some embodiments, one or more of the tilting pads include a plurality of superhard bearing segments assembled to form a superhard bearing surface. One or more seams may be positioned between adjacent superhard bearing segments of the superhard bearing segments. In other embodiments, one or more of the tilting pads may include at least one or only one superhard bearing segment, such as a polycrystalline diamond bearing segment.

Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat dissipation for bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed about an axis. Each superhard bearing element of the plurality of superhard bearing elements has a superhard table including a superhard surface. The bearing assembly includes a support ring structure coupled to the plurality of superhard bearing elements. One or more of the superhard bearing elements includes a superhard table, which may improve heat transfer from such superhard bearing elements.

A drill speeder. The drill speeder is used for increasing the rotating speed of a drill bit in drilling operation and comprises: an upper joint (1) connected to a drill tool (200) in the drilling operation; a lower joint connected to the drill bit (300); and three wing plates (9) arranged on the outer surface of a gear sleeve (10) of the drill speeder in an equal division mode, and closely attached to pistons embedded on the gear sleeve (10). When the drill bit (300) conducts a speed increasing operation, a drilling slurry column in the drill speeder jacks up the pistons (8) on the gear sleeve (10), and the wing plates (9) are opened and attached to the well wall. The drill speeder further comprises a sun shaft (12) and planetary gears (4). The upper joint (1) is a planetary gear support provided with three support shafts in the axial direction of the drill tool, the support shafts are sleeved with the planetary gears (4), and the planetary gears (4) are engaged with a sun shaft gear and inner teeth of the gear sleeve (10) simultaneously, and the sun shaft (12) serves as the lower joint to be connected to the drill bit (300) and drives the drill bit (300) to conduct speed increasing rotation. A pawl (3) is provided on the upper joint (1). When the planetary gears (4) fail in transmission, the pawl (3) is inserted into a tooth groove of the sun shaft (12) to push the sun shaft (12) to rotate at the rotating speed of the drill tool. The drill speeder can increase the drilling speed of the drill bit to achieve the speed increasing effect.

A sealing assembly having a housing having a main cavity, a sealing unit configured to receive a rotatable shaft, and at least a first sealing element, and a second sealing element positioned uphole with respect to the first sealing element along the longitudinal axis. The sealing assembly includes a first valve carried by the housing and coupled to the first sealing element and the main cavity, and configured to open at a first pressure level. The sealing assembly further includes a second valve coupled to the second sealing element and the main cavity, and configured to open at a second pressure level higher than the first pressure level. The sealing assembly is configured such that pressure is distributed across the first and second sealing elements sequentially.