Abstract: Systems and methods for performing operations on a well include first and second flow control devices positioned between upper and lower sections of a conduit. An upper connector assembly engaged with the upper section includes connectors adapted for connection to a chemical stimulation device, a blowout preventer, or other well intervention apparatuses. A lower connector assembly engaged with the lower section includes connectors adapted for connection to a chemical stimulation device, a running tool, wellbore conduits, or other well intervention apparatuses. The two connector assemblies, above and below the flow control devices, enable sequential or simultaneous operations to be performed, and can enable operations to be performed independent of the state of the flow control devices.

Abstract: A self-contained, portable firewall is provided having a rectangular configuration with a catwalk and a railing on the top side for accommodating a plurality of manned firefighting stations. The catwalk can comprise two openings, which can be covered by doors or hatches, that allow exit and entry of the manned firefighting stations through stairs located within the firewall structure. The stairs terminate at the floor and lead to a plurality of reinforced doors. Embodiments of the firewall comprise central doors having side doors flanking each central door, and each central door operatively associated with a status light. The manned firefighting stations are fed from at least one fluid input located at the bottom of the firewall structure, and the firewall structure further comprises a plurality of vents, fans and fume hoods.

Abstract: A skid-mounted chemical and hydrate remediation system including a subsea separator is described for use in the event of a hydrate plug with chemical injection. This system comprises a manifold which communicates between a subsea pipeline and a plurality of pumps located within a frame. This plurality of pumps comprises at least two pumps powered by ROV hydraulics which operate in series to extract fluid from the pipeline, and at least one chemical injection pump which communicates hydrate solvent through the manifold back into the pipeline. The system additionally comprises a coiled liquid/gas separator which separates the extracted fluid into liquid and gas components and returns them to the surface separately.

Abstract: The present invention comprises a pumping system operable at the surface (e.g., on a surface platform) to increase or restore hydrocarbon flow from a deep water or ultra deep water subsea environment to a surface production facility. The system comprises a primary conduit coupled to a Y-block splitting into two secondary conduits, one being open and free of obstruction, the other containing a progressing cavity pump coupled to a motor which acts as the prime mover for the pump system. The system may also comprise one or more valves between the primary conduit and the Y-block, one or more valves and between the secondary conduits and the Y-block. An emergency quick disconnect may also be used as part of the system between the Y-block and the secondary conduits.

Abstract: A motion compensating system and method for use on a vessel during well intervention operations through a riser. The system can comprise an upper floor having an opening therethrough, a lower base having an opening therethrough positioned below the upper floor, a first plurality of cylinders extending between the upper floor and lower base, and a riser tensioner. Each cylinder of the plurality of cylinders can be pivotally connected to the upper floor and lower base for moving the upper floor with respect to the lower base. The riser tensioner can have an upper portion, lower portion, and central cavity extending longitudinally through the upper and lower portions, wherein the upper portion can be adapted for connection with a riser or an intermediate tubular member that is connectable to the riser. The lower portion can be connected to the lower base within or about the opening of the lower base.

Abstract: Welding apparatus, for example for a workpiece, comprises resistance welding electrode wheels which form a weld seam between components of the workpiece. The formed weld is monitored by an ultrasonic probe which is situated behind the rollers with reference to the weld direction. The ultrasonic probe comprises a linear phased array of piezoelectric elements. The probe enables real-time monitoring of the welding process, with the facility to adjust the process to correct deviations.

Abstract: A torquing tool for rotating bolts connecting a pipe flange in a subsea environment, comprising a first guide for guiding movement of the torquing along a pipe, a socket for engaging a first bolt, a shaft for transferring torque from a motor to the socket, and a first protruding member for insertion between the pipe and a second bolt of the pipe flange, to prevent the torquing tool from rotating due to counter torque created while applying torque to the first fastener. The torquing tool can further comprise a second protruding member adjacent the socket, wherein the second protruding member can be inserted between the pipe and a third bolt of the pipe flange. The torquing tool can further comprise an angled shaft for transferring torque from the motor to the socket, wherein an axis of rotation of the motor is different from an axis of rotation of the socket.

Abstract: A wellhead capable of steering fluid flow to minimize contact with equipment in the wellbore comprises a central bore and a plurality of side bores coupled to injection ports. The plurality of side bores comprise a rifled internal surface having a circular or helical configuration into which fluids can be injected. The side bores intersect with the central bore at a mixing chamber, which also comprises a rifled internal surface. By injecting fluids into the wellbore through these ports, the operator can create a vortex utilizing the full capacity of the wellhead while minimizing contact with any wireline equipment.

Abstract: An extension bar apparatus and methods are usable for enhancing or applying increased torque to mechanical tools, such as wrenches and ratchets, to reduce or minimize the force applied by a user to the mechanical tool for producing work. The extension bar apparatus comprises a metallic tube with a hollow on one end for receiving a mechanical tool handle, which then engages with a plurality of bracing dogs that are each perpendicular to the other and affixed to the mechanical tool through multiple threaded members, some of which extend through the inner surface to the outer surface, and wherein the application of a rotational force to the extension bar apparatus applies torque to the mechanical tool.

Abstract: In one system, there is an emergency pipe stroker tool, wherein the emergency pipe stroker tool is configured to act as a first mechanical barrier for a well. Further, there is an emergency quick disconnect tool in communication with the emergency pipe stroker tool, wherein the emergency quick disconnect tool comprises a connector assembly and a fluid conduit in communication with the well, and further wherein the connector assembly is configured to simultaneously detach from the well and to seal the well. Further still, there is a cement retainer in communication with the emergency quick disconnect tool and the emergency pipe stroker tool, wherein the cement retainer is configured to act as a second mechanical barrier for the well, wherein, the emergency pipe stroker tool, the emergency quick disconnect tool, and the cement retainer act in coordination to seal a well while establishing the multiple mechanical barriers.

Abstract: A system and method are usable as a telescoping, small-scale oil rig, having the ability to rotate tubulars in a wellbore, pull tubulars from the wellbore, and insert tubulars into the wellbore. The system comprises a telescopic derrick section, a casing jack platform, and a base section. The telescopic derrick comprises U-shaped substructure frames that can be nested together, and is connected to an adjacent substructure through hydraulic cylinders. When pressurized, the cylinders extend to separate each substructure and raise the telescopic derrick. The casing jack platform comprises a traveling casing jack and spider for holding, inserting and removing tubulars. The base section supports the telescopic derrick and comprises a rotary floor and another spider for holding, inserting and removing tubulars into and from the wellbore. The combination of the traveling spider and stationary spider can be used for inserting tubulars into the wellbore when the well is under pressure.

Abstract: Systems and methods for performing operations on a well include first and second flow control devices positioned between upper and lower sections of a conduit. An upper connector assembly engaged with the upper section includes connectors adapted for connection to a chemical stimulation device, a blowout preventer, or other well intervention apparatuses. A lower connector assembly engaged with the lower section includes connectors adapted for connection to a chemical stimulation device, a running tool, wellbore conduits, or other well intervention apparatuses. The two connector assemblies, above and below the flow control devices, enable sequential or simultaneous operations to be performed, and can enable operations to be performed independent of the state of the flow control devices.

Abstract: A submersible pumping system that is operable under hydrostatic pressure. The system suitably comprises a prime mover submersible within a first fluid; a pump means submersible within the first fluid and sealably coupled to the prime mover; and a fluid source in fluid communication with the prime mover, the fluid source providing a second fluid effective to act on the prime mover to power the pump means; wherein the second fluid is discharged in the first fluid after acting on the prime mover; and wherein the second fluid has a chemical composition substantially similar to the first fluid.

Abstract: Systems and methods for performing operations on a well include first and second flow control devices positioned between upper and lower sections of a conduit. An upper connector assembly engaged with the upper section includes connectors adapted for connection to a chemical stimulation device, a blowout preventer, or other well intervention apparatuses. A lower connector assembly engaged with the lower section includes connectors adapted for connection to a chemical stimulation device, a running tool, wellbore conduits, or other well intervention apparatuses. The two connector assemblies, above and below the flow control devices, enable sequential or simultaneous operations to be performed, and can enable operations to be performed independent of the state of the flow control devices.

Abstract: Explosive cutter assemblies and methods include a liner having a single unitary body, and an explosive charge disposed within the liner. The explosive charge includes a continuous unitary body of explosive material having a first area disposed in association with an inner surface of the liner and a second area extending from the center of the assembly to the first area. A detonator can be used to ignite the second area of explosive material, causing propagation of a detonation to the first area, which in turn causes deformation of the liner and projection of the liner toward a target to form a cut. An adaptor sub having a detonator within can be inserted into the cutter assembly to secure the assembly together, position the detonator in association with the explosive material, and engage a conduit usable to raise and lower the cutter assembly and transmit a detonation signal.

Abstract: In one system, there is an emergency pipe stroker tool, wherein the emergency pipe stroker tool is configured to act as a first mechanical barrier for a well. Further, there is an emergency quick disconnect tool in communication with the emergency pipe stroker tool, wherein the emergency quick disconnect tool comprises a connector assembly and a fluid conduit in communication with the well, and further wherein the connector assembly is configured to simultaneously detach from the well and to seal the well. Further still, there is a cement retainer in communication with the emergency quick disconnect tool and the emergency pipe stroker tool, wherein the cement retainer is configured to act as a second mechanical barrier for the well, wherein, the emergency pipe stroker tool, the emergency quick disconnect tool, and the cement retainer act in coordination to seal a well while establishing the multiple mechanical barriers.

Abstract: A method of machining an object, the method comprising: receiving a signal from an ultrasonic transducer; determining at least a first external surface of the object and a second internal surface of the object in the received signal; determining a thickness between the first external surface and the second internal surface of the object, the object comprising a first material between the first external surface and the second internal surface, and a second material between the second internal surface and a third surface, the determination of the thickness using a database including a plurality of materials and a plurality of associated acoustic wave velocities; and controlling machining of the first external surface using the determined thickness.

Abstract: Fluid connector assembly and methods are usable to establish a sealed fluid connection. The connector assembly comprises a female union connector having an axial bore extending therethrough, internal threads, and an internal shoulder. The connector assembly also comprises two male connectors, each male connector having an axial bore extending therethrough and external threads. The connector assembly further comprises two ring-shaped seals adapted to form a fluid seal between the female union and the male connectors. The first seal contacts the first side of the internal shoulder and a front end of the first male connector to form a fluid seal therebetween. The second seal contacts the second side of the internal shoulder and a front end of the second male connector to form a second fluid seal therebetween.

Abstract: In one system, there is an emergency pipe stroker tool, wherein the emergency pipe stroker tool is configured to act as a first mechanical barrier for a well. Further, there is an emergency quick disconnect tool in communication with the emergency pipe stroker tool, wherein the emergency quick disconnect tool comprises a connector assembly and a fluid conduit in communication with the well, and further wherein the connector assembly is configured to simultaneously detach from the well and to seal the well. Further still, there is a cement retainer in communication with the emergency quick disconnect tool and the emergency pipe stroker tool, wherein the cement retainer is configured to act as a second mechanical barrier for the well, wherein, the emergency pipe stroker tool, the emergency quick disconnect tool, and the cement retainer act in coordination to seal a well while establishing the multiple mechanical barriers.

Abstract: A wellhead capable of steering fluid flow to minimize contact with equipment in the wellbore comprises a central bore and a plurality of side bores coupled to injection ports. The plurality of side bores comprise a rifled internal surface having a circular or helical configuration into which fluids can be injected. The side bores intersect with the central bore at a mixing chamber, which also comprises a rifled internal surface. By injecting fluids into the wellbore through these ports, the operator can create a vortex utilizing the full capacity of the wellhead while minimizing contact with any wireline equipment.