Embodiments of a wellhead assembly have a tubular body with a removable bottom cap to house a tubing rotator comprising a multi-enveloping worm gear assembly which provides sufficient torque to rotate tubing strings in deep and/or deviated wellbores. The bottom cap is supported on a wellhead having a dognut for supporting a production string therefrom in a wellbore. The bottom cap rotatably supports a mandrel and multi-enveloping worm wheel thereon, the mandrel being connected to the dognut and tubing string for co-rotation therewith. The tubular body supports a multi-enveloping worm for engagement with the worm wheel when the tubular body is lowered axially onto the bottom cap. When the tubular body and worm are lifted axially from the bottom cap, the worm wheel and mandrel are exposed for repair or replacement without need to pull the production string from the wellbore. The tubular housing can further house a flow tee and opposing blowout preventer ports and rams therein, forming an integrated wellhead assembly.

A method and apparatus for testing a blowout preventer which includes a plurality of safety devices and an assembly of fluid control valves that are remotely actuatable to an open and closed position for controlling flow of drilling fluids into a well includes a hydraulic power unit control station for remotely and selectively actuating one or more safety devices and fluid control valves to a test orientation. A hydrostatic test system supplies fluid under first and second test pressure and documents any pressure loss due to fluid leaks within a closed system.

Apparatus for deploying coiled tubing into a wellbore include a neck portion extending between end connections, where the end connections are configured to be attached to a coiled tubing tool string, and a main flow passage, at least one secondary flow passage and at least one electrical device passageway extending through the neck portion and the end connections. A wireline cable or an optical fiber is disposed in the electrical device passageway, and a well treatment fluid flows through the main flow passage. The main flow passage may have a substantially circular cross sectional shape. The apparatus includes at least one secondary flow passage having a substantially circular cross sectional shape, which may be a tube disposed within the main flow passage. The electrical device passageway may in some cases be a tube disposed within the main flow passage.

The present invention relates to a subsea multipiston pump module, a subsea multistage pump and skid, having two reciprocating pistons controlled by a control means in such a way that the pistons can be driven either in a parallel mode, where the pistons are driven in phase with each other, or in a serial mode, where the pistons are driven out of phase with each other, wherein the pistons are fluidly connected with each other by a piston connection means in such a way that in parallel mode they are fluidly connected in parallel, and in serial mode, they are fluidly connected in serial. Further, the invention relates to a method of pumping a media fluid under subsea conditions.

In one aspect there is provided a ram block inner seal assembly comprising a core member having a top face, a bottom face, a front face, a rear face, and two side faces. A connector portion connects the top and bottom faces. A peripheral member surrounds the front, rear and side faces. The core member further comprises a peripheral groove on at least the front and side faces, the peripheral groove having a cross-sectional profile. The peripheral member further comprises an energizing section that has a cross-sectional profile which substantially matches the cross-sectional profile of the peripheral groove.

The present disclosure is directed to systems and methods for a configurable blowout preventer (BOP) system for use in oil and gas operations. According to an embodiment, a BOP system can include two or more modular BOP ram cavity sets, each of the BOP ram cavity sets having at least one BOP ram cavity; one or more frame levels, each of the frame levels separating each of the BOP ram cavity sets and coupling each of the BOP ram cavity sets together; and a plurality of hydraulic piping fluidly connected to each of the BOP ram cavity sets, the plurality of hydraulic piping configured to drive operation of the BOP ram cavity sets.

A system including a bottom hole assembly and a ram positioned below a barrier of a well and methods for deploying the same are described. The ram is configured to secure the bottom hole assembly at an end of the bottom hole assembly to secure the bottom hole assembly within the well.

A system for locking a bearing assembly to a rotating control device (RCD) housing is provided. The RCD housing can be coupled to a blowout preventer, and the bearing assembly can be received within the housing, and can comprise a stationary bearing housing having a perimeter channel. A plurality of locking block assemblies are each supported by the housing and are operable between a locked position and an unlocked position. Each locking block assembly comprises a movable block configured to interface with the perimeter channel when in the locked position, and at least one elastic component is situated between the housing and the movable block. The at least one elastic component is configured to automatically bias the movable block in the locked position. Upon supplying fluid pressure via a valve device, the movable block moves to the unlocked position and the at least one elastic component compresses to facilitate removal of the bearing assembly from the RCD housing. Associated systems and methods are provided.

A rotating control device (RCD) having an anti-rotation locking system for restricting rotation of a bearing assembly housing of the RCD comprises an RCD housing operable with a blowout preventer, and a bearing assembly operable to be received within the RCD housing and comprising a stationary bearing housing. The bearing assembly can be configured to receive and engage with and seal a pipe of a drill string of a drill rig. The stationary bearing housing can have secured thereto a locking ring. The anti-rotation locking system of the RCD can further comprise one or more anti-rotation devices moveable between a locked position and an unlocked position. The anti-rotation device(s) are operable to engage the locking ring, when in the locked position, to lock the stationary bearing housing to the RCD housing independent of the rotational position of the stationary bearing housing relative to the RCD housing.

A rotating control device (RCD) for a drilling operation comprises a housing operable with a blowout preventer, and a bearing assembly operable to be received in the housing, and operable to receive a pipe of a drill string. The RCD comprises a plurality of locking pin assemblies supported by the housing. Each locking pin assembly can comprise a movable pin operable between a locked position that locks the bearing assembly to the housing, and an unlocked position that unlocks the bearing assembly from the housing. An RCD comprises an RCD housing coupled to a blowout preventer, and a bearing assembly received within the RCD housing and comprising a lower sealing element sleeve having a perimeter channel. The system comprises a plurality of locking pin assemblies supported by the RCD housing and operable between a locked position and an unlocked position. The movable pins can be automatically biased to the locked position by elastic elements upon removing fluid pressure from the housing. Associated systems and methods are provided.