Abstract: A cap assembly for use with a tubing spool of a wellhead has a body with an interior passageway body and a mandrel extending upwardly therefrom. The body has a connector extending from an opposite end thereof. The interior passageway extends though the mandrel and the connector. A valve is affixed to the body and extends into the interior passageway. The valve is movable between a first position closing the interior passageway and a second position opening the interior passageway. An actuator is connected to the valve so as to move the valve between the first and second positions. A tubing hanger stab is affixed to the body and extends through the connector so as to join with a tubing hanger in the tubing spool.

Abstract: An apparatus for connecting a hub of a first pipe to a hub of a second pipe in a subsea environment includes a frame suitable for receiving the hub of the second pipe, a post extending outwardly of the frame, a landing structure slidably positioned on the post, and an actuator for moving the landing structure along the post such that the hub of the first pipe is juxtaposed against the hub of the second pipe. The landing structure includes a receptacle formed thereon. This receptacle is suitable for receiving a slotted portion of an arm extending from a trunnion extending around the first pipe such that the first pipe can pivot from a generally vertical orientation to a generally horizontal orientation. A clamp can extend against the hubs of the first and second pipes so as to join the pipes together.

Abstract: A subsea pipe connection assembly has a first flange, a nut magazine positioned against a side of the first flange and having a plurality of nuts therein corresponding to the plurality of holes of the first flange, a second flange having a plurality of holes in alignment with the holes of the first flange, and a plurality of studs extending through holes of the first and second flanges such that the nuts in the nut magazine are affixed to the ends of the studs. A sleeve is affixed to and extending from the second flange. An ROV-delivered frame can be supported on the sleeve of the pipe such that a torquing tool connected to the frame can apply torque to a nut on the stud. The sleeve has a guide surface thereon so as to direct the torquing tool to nuts on the plurality of studs.

Abstract: A subsea relief valve system for use in a subsea environment has subsea piping having a first portion and a second portion, a choke cooperative with the subsea piping and movable between an open position and a closed position, a hydraulic actuator connected to the choke so as to move the choke between the open and closed positions, and a signal source cooperative with the hydraulic actuator so as to actuate the choke to the open position when an overpressure condition is detected. The open position of the choke is suitable for venting a fluid to the subsea environment. The closed position of the choke is suitable for retaining the fluid within the subsea piping.

Abstract: A system for controlling functions of a subsea structure, such as a blowout preventer, has a plurality of actuators respectively affixed to a plurality of controls of the subsea structure, and an acoustic signal generator positioned remotely from the plurality of actuators. Each of the plurality of actuators has a transponder connected thereto. The acoustic signal generator produces an acoustic signal so as to actuate at least one of the plurality of actuators. Each of the actuators is an electrically-powered torque wrench having a battery affixed there to so as to supply power thereto. An induction generator can transmit an electromagnetic wave along the tubing associated with the blowout preventer so as to recharge the batteries of the torque wrenches.

Abstract: A system for capping a blowout preventer has a capping stack with a connector suitable for connection to the blowout preventer, a flowing stack, and an intervention blowout preventer connected to a connector of the flowing stack. The capping stack has a fluid passage extending from the connector. The capping stack has at least one diverter line in communication with the fluid passage. The flowing stack has an interior passageway extending to the connector at an upper end thereof. The flowing stack has at least one pipe in communication with the interior passageway. The pipe is connected with the diverter line of the capping stack such that a flow fluid passing through the diverter line passes through the pipe into the interior passageway of the flowing stack.

Abstract: A method of forming a field joint for a subsea pipeline includes the steps of positioning an end of a first pipe adjacent to an end of a second pipe, welding the end of the first pipe to an end of the second pipe, and applying a coating material over an exterior surface of the first pipe, over the welding, and over an exterior surface of second pipe such that the coating material is in sealing relationship therewith. The coating material has air-filled glass spheres therein. A mold is placed over the adjacent pipe sections and the coating material is injected under pressure into the mold.

Abstract: An apparatus from repairing a subsea pipeline has a pile with a receptacle on a top surface thereof, a frame having a pair of pins extending outwardly on opposite side of the frame and received within the receptacle of the pile, a length of pipeline affixed to the frame. The pipe support is affixed to an end portion of the length of pipeline. The receptacle has a pair of slotted members extending upwardly from a top surface of the pile. Each of the slotted members has a tapered opening with a hole formed below and communicating with the tapered opening.

Abstract: A method for repairing a damaged section of a subsea pipeline has the steps of cutting the damaged section at a first location on the subsea pipeline, cutting the damaged section of the second location on the subsea pipeline, removing the damaged section, affixing a first messenger line assembly to the subsea pipeline at the first location, affixing a second messenger line assembly to the subsea pipeline at a second location, and connecting a jumper line to the first messenger line assembly and to the second messenger line assembly so as to establish a continuous flowway between the first and second locations. Lift frame assemblies are positioned around the subsea pipeline at the first and second locations so as to elevate the subsea pipeline.

Abstract: A method of repairing a subsea pipeline has the steps of positioning a pile onto a subsea floor in a location adjacent to the subsea pipeline, cutting a section of pipeline from the subsea pipeline so that the subsea pipeline has a first cut end and a second cut end, moving a length of pipeline to the pile so as to hingedly connect the length of pipeline with the receptacle on the pile, pivoting the length of pipeline about the hinged connection so as to move the length of pipeline from a generally vertical orientation to a generally horizontal orientation, connecting the first end of the length of pipeline to the first cut end, and connecting the second end of the length of pipeline to the second cut end.

Abstract: A system for remediating hydrates has a heat storage box with an interior volume, a heater for heating fluid flowing into the hot fluid inlet of the heat storage box, a heat exchanger positioned in the interior volume of the heat storage box so as to be in heat exchange relationship with heated water from the interior volume of the heat storage box, and a line connected to a heated water outlet of the heat exchanger so as to be manipulated toward a location of the hydrates for the purpose of delivering the heated water toward the hydrates. The heat exchanger is piping extends in a serpentine pattern within an upper portion of the heat storage box. The line can be connected to a hot stab suitable for a manipulation by an ROV.

Abstract: An anchor pile apparatus for placement in subsea soil has a tubular member has an interior passageway, a support structure affixed to the upper end of the tubular member, a shaft rotatably mounted in the support structure and extending downwardly through the interior passageway of the tubular member, and an auger connected to the shaft. A suitable hydraulic torquing tool can be connected to the shaft so as to cause the shaft to rotate for the purpose of rotating the auger. The auger is rotated so as to draw the tubular member into the subsea soil. The tubular member has a plurality of fins extending radially outwardly therefrom.

Abstract: A grease accumulator apparatus for use in subsea applications has a bottle with an internal chamber, a plunger positioned within the internal chamber and slidable therealong, and an end cap assembly affixed to one end of the bottle. The end cap assembly has an indicator member slidably connected thereto. The indicator member is cooperative with the plunger such that an end of the indicator member moves outwardly of the end cap assembly as the plunger moves in the bottle toward the end cap assembly. The end cap assembly has a body with a housing affixed to one end thereof. The housing has a hydraulic fluid inlet and a hydraulic fluid outlet. The indicator member is movable between a position in which the inlet and outlet are fluidically connected in a second position in which fluid flow is blocked between the inlet and the outlet.

Abstract: An anchor pile apparatus for placement in subsea soil has a tubular member has an interior passageway, a support structure affixed to the upper end of the tubular member, a shaft rotatably mounted in the support structure and extending downwardly through the interior passageway of the tubular member, and an auger connected to the shaft. A suitable hydraulic torquing tool can be connected to the shaft so as to cause the shaft to rotate for the purpose of rotating the auger. The auger is rotated so as to draw the tubular member into the subsea soil. The tubular member has a plurality of fins extending radially outwardly therefrom.

Abstract: An apparatus having a hot stab having a fluid conduit connector thereon, a hydraulic hose having a connector assembly at an end thereof suitable for joining to the fluid conduit connector of the hot stab, and a sleeve affixed to the hot stab and to the hydraulic hose so as to extend over and surround the fluid conduit connector and the connector assembly. A jam nut is affixed to the tubular portion of the fluid conduit connector. The sleeve is threadedly connected to the threaded exterior surface of the jam nut. A crimp fitting is secured to an end of the hydraulic hose. A hose swivel extends around a crimp fitting and is affixed around the fluid conduit connector of the hot stab.