A natural gas hydrate drilling simulation device, includes a hydrate rock core simulation system, a drilling system, a drilling fluid injection system and a drilling fluid treatment system. The hydrate rock core simulation system includes a hydrate formation simulation wellbore, an artificial rock core, a water bath jacket and low temperature water bath. The drilling system includes a bracket, a high pressure rotary connecting device, a hydraulic device and a drilling device. The drilling fluid injection system includes a mud tank, a drilling fluid flowmeter, mud pumps and an overflow valve. The drilling fluid treatment system includes a high pressure sand remover, a back pressure and overflow control system, a gas-liquid separator, a dyer, a gas flowmeter, a liquid flowmeter and a mud treatment tank. This natural gas hydrate drilling simulation device performs simulation experiments under a variety of downhole working condition environments.

Disclosed is an actuator capable of imparting a linear, rotary, or combined roto-linear force. In one embodiment, the actuator has a rotor and a stator, each having helical grooves with a thrust ball occupying the grooves. A nose piece is situated at the end of the actuator and can be attached to other equipment. The actuator is electrically controlled and can be used in applications requiring high forces or other specialized environments.

In one embodiment, an annular isolation device for a riser includes a tubular body connectable to the riser. A closure member is rotatable between a closed position isolating fluid communication in the tubular body and an open position permitting fluid communication through the tubular body. The annular isolation device further includes an actuator disposed outside the tubular body and operable to rotate the closure member between the open position and the closed position.

A subsea fluid distributor comprises a support framework configured to be removably mounted to and hydraulically connected to a subsea structure intermediate the subsea structure and an incoming flying lead terminator of an incoming flying lead; a plate attached to an upper section of the support framework; a fixed bucket attached to the support framework; a valve attached to the support framework; a lower framework attached to a lower portion of the support framework; a first hydraulic tube attached to the lower framework and in fluid communication with the valve; a flying lead junction plate support framework attached to the lower portion of the support framework; a second hydraulic tube disposed at least partially within flying lead junction plate support framework and in fluid communication with various subsea equipment; a first remotely operated vehicle (ROV) torque bucket (62) attached to an upper portion of the flying lead junction plate support framework; a second ROV torque bucket (22) attached to the upper of the support framework; and a predetermined set of signal connectors attached to the upper of the support framework and operatively connected to the valve to aid in controlling the operation of the valve.

A subsea fluid distributor comprises a support framework configured to be removably mounted to and hydraulically connected to a subsea structure intermediate the subsea structure and an incoming flying lead terminator of an incoming flying lead; a plate attached to an upper section of the support framework; a fixed bucket attached to the support framework; a valve attached to the support framework; a lower framework attached to a lower portion of the support framework; a first hydraulic tube attached to the lower framework and in fluid communication with the valve; a flying lead junction plate support framework attached to the lower portion of the support framework; a second hydraulic tube disposed at least partially within flying lead junction plate support framework and in fluid communication with various subsea equipment; a first remotely operated vehicle (ROV) torque bucket (62) attached to an upper portion of the flying lead junction plate support framework; a second ROV torque bucket (22) attached to the upper of the support framework; and a predetermined set of signal connectors attached to the upper of the support framework and operatively connected to the valve to aid in controlling the operation of the valve.

A modular subsea chemical injection system, comprising a power and communications module, a power and communications umbilical terminator, a power and communications module, a fluid storage module comprising a plurality of fluid storage bays adapted to selectively receive a corresponding plurality of high and/or low flow fluid storage units, a pump module comprising a plurality of pump bays adapted to selectively receive a corresponding plurality of high fluid flow and/or low fluid flow pumps, and a fluid distribution unit in fluid communication with a pump module fluid port can be disposed on a seafloor adjacent to a well site and used to selectively provide low and/or high flow fluid delivery by use of subsea storage and pressure boosting for low flow fluid needs and low flow fluid needs.

A modular subsea chemical injection system, comprising a power and communications module, a power and communications umbilical terminator, a power and communications module, a fluid storage module comprising a plurality of fluid storage bays adapted to selectively receive a corresponding plurality of high and/or low flow fluid storage units, a pump module comprising a plurality of pump bays adapted to selectively receive a corresponding plurality of high fluid flow and/or low fluid flow pumps, and a fluid distribution unit in fluid communication with a pump module fluid port can be disposed on a seafloor adjacent to a well site and used to selectively provide low and/or high flow fluid delivery by use of subsea storage and pressure boosting for low flow fluid needs and low flow fluid needs.

A valve assembly for drilling systems comprising a bidirectional valve (1) cooperating with a hydraulic clamping device (2) and being applied to a drilling machine for supplying a drilling fluid in two discrete directions, the valve assembly comprising a valve outer body adapted to be arranged between drilling rods while allowing said rod to be exchanged while keeping the mud continuously circulating.

A valve assembly for drilling systems comprising a bidirectional valve (1) cooperating with a hydraulic clamping device (2) and being applied to a drilling machine for supplying a drilling fluid in two discrete directions, the valve assembly comprising a valve outer body adapted to be arranged between drilling rods while allowing said rod to be exchanged while keeping the mud continuously circulating.

A high pressure valves for the energy sector. Specifically, a first valve assembly and a second valve assembly being in communication of each other around a plug to allow for dynamic control over the pressure desired to set the plug.