Abstract: The present invention discloses a device for solid-state fluidization mining of seabed shallow layer non-diagenetic natural gas hydrates. The device comprises a hydraulic jet nozzle set, a coiled tubing, a hydrate collecting ship arranged on the sea surface, a transfer station arranged in sea water and a riser arranged in a seabed surface layer. A guide seat is arranged in the riser. The hydraulic jet nozzle set is arranged in the guide seat. A delivery pipe connected with the transfer station sleeves a nozzle body. An opening is formed in a position where the delivery pipe is in contact with the nozzle body. The transfer station is connected with the hydrate collecting ship. The present invention further discloses a method for collecting seabed shallow layer non-diagenetic hydrates.

Abstract: The present invention relates to a connector comprising an external locking ring (11) allowing bayonet type connection on either side with two male (9) and female (8) connector elements, by means of studs having identical angular ranges. Furthermore, the connector comprises at least one removable pin (12) for translationally blocking locking ring (11), notably upon locking and unlocking.

Abstract: A device for coupling a riser comprises a flexible joint comprising flanges, a ball joint with a housing comprising a mating face; a connection pipe comprising flanges; a guide pipe comprising a hang off face; a hang off structure underneath a flange of the connection pipe comprising a coned section with a surface contacting the connection pipe, a spline having parts fitting into the connection pipe, hang off segments attached to the hang off structure, the segments providing a load transferring surface; and an adapter fastened to the flexible joint housing comprising a mating surface complementary to a mating surface of the flexible joint housing; support regions; a coned section above a support region, ending at a distance from the hang off structure and in contact with the connection pipe; at least one of the support regions and the flexible joint housing being in contact with the guide pipe.

Abstract: The present disclosure provides an automatic push corer system including a base, a power group, a Geneva transmission group, an intermittent transmission group, a vertical coring transmission group, a clamp group and a coring group. The power group is used to drive the Geneva transmission group. The Geneva transmission group is configured to perform a first intermittent rotary motion. The intermittent transmission group is configured to perform a second intermittent rotary motion. The vertical coring transmission group is configured to cooperate with the second intermittent rotary motion to perform a third intermittent rotary motion. The clamp group is configured to cooperate with the third intermittent rotary motion to perform a lifting reciprocation. The coring group is configured to cooperate with the first intermittent rotary motion and the lifting reciprocation to respectively complete a coring operation and a tubing replacing operation.

Abstract: In combination a drilling installation for drilling a well and a control and signal lines deployment module, wherein the drilling installation includes a rig floor slip device which is adapted to be cleared from a well centre opening to create a clear space around the well centre opening. The combination further includes a temporary workspace floor, which is adapted to be mounted in the clear space at a level below a rig floor surface and to provide a workspace floor for an operator standing in the clear space on said work space floor, allowing the operator to secure at a securing level the one or more control/and or signal lines externally to a second tubulars string suspended from a module slip device.

Abstract: A system and method are able to generate and dissipate heat internally to a certain submarine equipment by applying electric power, aiming to aid in the remediation and treatment of hydrate, which was formed in its inside, aiming its effective spreading. The said system is specially suitable to be used in submarine equipments involved in the fluids flowing linked to Oil and Gas Industry, and includes a cavity filled with a fluid suitable for heat transfer, in which a penetrator is installed thereon interlinking an encapsulated resistance to a compensated hose filled with dielectric oil housing inner electrical wires. The said hose has an electrical connector suitable for operating with ROV in its end.

Abstract: 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.

Abstract: An apparatus that includes a housing, a flowline extending within the housing, and a member retained within the housing and substantially comprising thermally conductive material. The flowline is retained in a substantially cylindrical surface of the member. A heat-generating electrical component is mounted to the member.

Abstract: A system for tethering a subsea blowout preventer (BOP) includes a plurality of anchors disposed about the subsea BOP and secured to the sea floor, a plurality of tensioning systems, and a plurality of flexible tension members. Each tensioning system is coupled to a frame of the BOP and is configured to apply a tensile preload to one of the tension members. Each tension member is coupled to one of the anchors and extends from a first end coupled to one of the tensioning systems to a second end coupled to an anchor.

Abstract: A liner assembly tool includes a base tubular that includes a bore therethrough; a wellbore liner that includes a liner top and is coupled to the base tubular; a pack-off element radially positioned between the base tubular and the wellbore liner to ride on the base tubular; and a wedge positioned to ride on the base tubular and expand the pack-off element to at least partially seal the liner top to a wellbore wall based on a particular fluid pressure supplied through the bore.

Abstract: A multi-well pad for fracturing a subterranean formation can include a valve assembly that includes a shuttle valve, an inlet, a first outlet, and a second outlet, where the inlet is coupled to a fracturing pump, where the first outlet is coupled to a first well, where the second outlet is coupled to a second well, where first shuttle valve has a first position and a second position. The fracturing pump and the first well can form a continuous first path through the valve assembly while closing off a second path between the fracturing pump and the second well when the shuttle valve is in the first position. The fracturing pump and the second well can form a continuous second path through the valve assembly while closing off the first path between the fracturing pump and the first well when the shuttle valve is in the second position.

Abstract: A well stimulation system includes an inlet fluid conduit connected to a manifold, and a first wellhead assembly connected to the manifold, wherein the wellhead assembly includes a frac tree, a wellhead coupled to the frac tree, wherein the wellhead is in fluid communication with a first well, wherein the frac tree of the first wellhead assembly is configured to inlet a stimulation fluid from the manifold to the first well along a first fluid flowpath extending through the frac tree, wherein the frac tree of the first wellhead assembly is configured to outlet well fluid from the first well to the manifold along the first fluid flowpath.

Abstract: A subsea processor may be located near the seabed of a drilling site and used to coordinate operations of underwater drilling components. The subsea processor may be enclosed in a single interchangeable unit that fits a receptor on an underwater drilling component, such as a blow-out preventer (BOP). The subsea processor may issue commands to control the BOP and receive measurements from sensors located throughout the BOP. The subsea processor may relay information to the surface for recording or monitoring. The subsea processor may also be programmed with a model from which to base operation of the BOP, such as in emergency conditions.

Abstract: Systems and methods providing a tree cap that allows power, signal, and/or hydraulic function connections to be established between an Electrical Submersible Pump and a vertical Christmas tree (VXT) control system are provided. The tree cap includes an Electrical Feed-through System (EFS) having an electro-hydraulic stinger configured to form a connection to an ESP hanger plug of the Electrical Submersible Pump (ESP). The tree cap is configured to lock onto the vertical Christmas tree (VXT) and provide a secondary seal barrier element to the environment.

Abstract: A method and apparatus for drilling wells for producing petroleum products from an earth formation that is covered by shallow water having a depth of about 600? or less, using a self-elevating drilling unit (SEDU) to drill one or more wells having wellheads located at or near the seabed. Well drilling is accomplished through a blowout preventer stack and a drilling spool string having a wellhead connector secured at its lower end and establishing releasable connection with the subsea wellhead. As a plurality of wells are being drilled, production of petroleum products can begin from wells that have already been completed, thus initiating an income stream from petroleum production starting only a few months from initiation of well drilling activity. When a well has been drilled, completed and rendered safe, the drilling spool string and wellhead connector is removed to the SEDU, leaving the wellhead positioned at the seabed in readiness for later production.

Abstract: Methods for creating vertical mini-holes in a subterranean formation while creating multi-directional Bernoulli-induced fractures therein are provided. These methods are particularly useful in horizontal or deviated wells. In some embodiments, the method includes forming a mini-hole in the subterranean formation perpendicular to the deviated wellbore. The mini-hole is in fluid communication with the deviated wellbore at a proximal end and has a tip located at a distal end. The method further includes injecting fluid into the mini-hole with a maximum pressure forming at the tip so as to initiate a fracture along local formation stresses proximate the tip of the mini-hole.

Abstract: A downhole tool operable for conveyance within a wellbore extending into a subterranean formation, and for obtaining one or more measurements of the subterranean formation, wherein the downhole tool comprises a sensor, a pressure housing containing the sensor and mounted on an external surface of the downhole tool, and a sliding stabilizer covering the pressure housing.

Abstract: An exemplary method of actuating an operational device includes activating a propellant in a pyrotechnic pressure generator, the pyrotechnic pressure generator comprising an elongated body having a first end, a second end, and a bore extending axially from a barrier to the second end, a piston slidably disposed in the bore, the propellant located in a chamber between the first end and the barrier, a gas outlet orifice through the barrier providing gas communication between the chamber, and a port at the second end in communication with the operational device; producing a gas in the chamber in response to activating the propellant, the gas escaping through the gas outlet orifice into the bore and the gas applying a force to the piston; moving the piston in a stroke from a position proximate to the barrier to a position proximate to the second end; communicating a pressure to the operational device that is equal to or greater than an operating pressure of the operational device in response to moving the piston;

Abstract: An earth-boring tool includes a bit body and an actuator coupled to the bit body. The actuator includes at least one shape memory material configured to transform from a first shape to a second shape to move a bearing pad or a cutting element with respect to the bit body in response to a stimulus. A transformation from the first shape to the second shape includes a phase change from a first solid phase to a second solid phase. A depth-of-cut limiter includes a bearing element and at least one shape memory material coupled to the bearing element. A method of forming or servicing a wellbore includes rotating an earth-boring tool within a wellbore, applying a stimulus to an actuator to convert at least one shape memory material from a first shape to a second shape, and continuing to rotate the earth-boring tool within the wellbore after applying the stimulus.

Abstract: A cutting element comprises a cutting table of a polycrystalline hard material including a cutting face, a sidewall, and at least one peripheral cutting edge portion between the cutting face and the sidewall. A radius of curvature of the peripheral cutting edge portion is greater than a radius of curvature of at least another peripheral edge portion between the cutting face and the sidewall. An earth-boring tool may include one or more such cutting elements.