1241 results about "Subsea" patented technology

The invention discloses a data center design and construction method for connecting a subsea tunnel and a subsea pipe gallery, and belongs to the technical field of subsea data center construction. The subsea tunnel and the subsea pipe gallery are connected through a special connecting structure, and meanwhile, a design method and a construction method for connecting the subsea tunnel and the subsea pipe gallery for connecting the coast and the seabed are provided; according to the data center built by the method, coast and seabed personnel and materials can be transferred through connection of the subsea tunnel and the subsea pipe gallery, and the problem that connection and transfer of the subsea data center and shore-based resources are difficult is solved.

A well system comprises a subsea system to be positioned on a floor of a subsea at or near a current well that is formed in a subsurface formation below the floor of the subsea. The subsea system comprises at least one solids reduction device to receive solids that were part of the subsurface formation from downhole at a surface of the current well, wherein the at least one solids reduction device is configured to reduce a size of at least a portion of the solids.

The utility model relates to a submarine pipeline cleaning device which comprises an impurity removal scraper, a guiding and positioning device, a circumferential rotation flushing device, a pipe wall cleaning device and an advancing driving device. The guiding and positioning device is used for fixing the front end of the submarine pipeline cleaning device and guiding the submarine pipeline cleaning device to advance, the circumferential rotating flushing device flushes the pipe wall, and the pipe wall cleaning device conducts final cleaning on the pipe wall. The advancing driving device is arranged at the rear end of the submarine pipeline cleaning device and provides power for driving the submarine pipeline cleaning device to advance. The subsea pipeline wall cleaning device has the effect of improving the subsea pipeline wall cleaning efficiency.

A subsea wellbore monitoring system of the present disclosure includes hanger, plug, and monitoring assemblies. The hanger assembly installs on landing in the wellhead, engages the lock profile, and has a hanger seal sealing in the wellhead. The plug assembly is supported in the hanger assembly and has a plug seal to seal in the landing. Ports of the plug assembly communicate with a bore envelope and an annulus envelope. The monitoring assembly has pressure monitors that communicate with the ports and measure pressure measurements related to the envelopes. The hanger and plug seals can be elastomeric and / or metal elements. The hanger and plug seals are preferably expandable or can be energized outward so the seals can pass any shoulders and profiles when installed in the wellbore and can then seal against the internal surfaces.

The invention provides a subsea tunnel mechanical property numerical simulation evaluation method under the earthquake action, and relates to the technical field of subsea tunnel damage, and the method specifically comprises the following steps: systematically collecting parameters such as geometric dimensions and material characteristics of a tunnel; establishing a three-dimensional geometric model by utilizing finite element analysis, and performing numerical simulation of static and dynamic responses; static and dynamic test models are constructed, and training is carried out through bearing capacity labels evaluated by experts so as to obtain more accurate static and dynamic bearing capacity; data processing is carried out on environmental factors such as soil strength, underground water level and temperature change, and a correction coefficient is generated to correct a bearing capacity value; and generating a comprehensive coefficient by calculating static and dynamic stability coefficients so as to evaluate the damage state of the subsea tunnel. According to the method, a scientific basis is provided for aseismic design, the damage state of the tunnel under the most unfavorable earthquake action is accurately reflected, meanwhile, the influence of environmental factors on tunnel damage is comprehensively considered, and the accuracy and reliability of evaluation are remarkably improved.

The invention discloses a corrosion-resistant offshore wind power FRP-steel composite tower tube structure multi-objective optimization design method. The method comprises the following steps that a composite tower tube structure in an outer layer GFRP-steel tube-inner layer GFRP composite section form is adopted below the sea level and in a splash zone; mapping the coupling load time history to a parameterized finite element model of the composite tower tube structure; constructing a multi-objective optimization function by taking the minimization of the total manufacturing cost of the composite tower drum structure, the minimization of the total mass of the composite tower drum structure and the maximization of the total volume proportion of the GFRP material of the composite tower drum structure as objectives; and establishing a constraint evaluation system, carrying out iterative optimization on the multi-objective function by adopting a fast non-dominated sorting genetic algorithm with an elitist retention strategy, outputting a Pareto optimal solution set, and selecting a final implementation scheme. The problems that a traditional pure steel tower drum is large in corrosion loss and the design is difficult to balance multiple performance targets in the severe ocean environment can be solved.

A well system comprises a subsea system to be positioned on a floor of a subsea at or near a current well that is formed in a subsurface formation below the floor of the subsea. The subsea system comprises at least one solids reduction device to receive solids that were part of the subsurface formation from downhole at a surface of the current well, wherein the at least one solids reduction device is configured to reduce a size of at least a portion of the solids.

A system is for remotely controlling a running tool to install equipment in a subsea well through a subsea structure. The system has a control device for controlling the running tool and a communication module for wirelessly communicating with the control device. The control device and the communication module include wireless communication interfaces for communicating subsea with each other through the subsea structure when the control device is provided internally to the subsea structure and the communication module is provided externally to the subsea structure. The memory of the control device is configured with state identifiers for representing internal states of the running tool and programs associated with operations for controlling the running tool. The control device is configured to receive commands from the communication module, execute the programs based on the command, and return a state identifier for representing a current internal state of the running tool.

A natural gas hydrate in-situ drilling and drilling fluid treatment system, comprising an offshore control platform (16), a natural gas hydrate subsea in-situ drilling device, a disassembly and assembly servo system, a drilling fluid feeding system, a wellhead flowback drilling fluid treatment system, a hydrate decomposition gas treatment system, a wellhead flowback drilling fluid tailings treatment system, a buoyancy control system (15), and a main control electric-power communication support system (17) connected to each system and controlling same, wherein the natural gas hydrate subsea in-situ drilling device and the drilling fluid feeding system are separately detachably connected to the wellhead flowback drilling fluid treatment system; and the hydrate decomposition gas treatment system is separately connected to the wellhead flowback drilling fluid treatment system, the natural gas hydrate subsea in-situ drilling device and the drilling fluid feeding system. Using unattended automation technology realizes the operation of the natural gas hydrate in-situ drilling and drilling fluid treatment system, such that the production process is simplified, automation and modularization are achieved, and subsea in-situ drilling can be performed on a large scale, thus greatly reducing the operation costs.

The invention provides a seabed node, the seabed node comprises a buoyancy device, a base device and a controller, the buoyancy device is installed at the top of the seabed node, and the buoyancy device comprises a water storage cavity; one end of the communicating vessel is communicated with the water storage cavity; the electromagnetic valve is communicated with the other end of the communicating vessel; the compression water pump is communicated with the electromagnetic valve; the base device is mounted at the bottom of the seabed node, comprises a waterproof electromagnetic device and is connected with the seabed node; the counterweight is electromagnetically coupled with the waterproof electromagnetic device; the controller is used for controlling the electromagnetic valve to be opened and controlling the compression water pump to inject water into the water storage cavity through the communicating vessel, so that the seabed node sinks; the controller further controls the electromagnetic valve to be opened, controls the compression water pump to enable the water storage cavity to drain water through the communicating vessel, and controls the waterproof electromagnetic device to enable the configuration and the waterproof electromagnetic device to be decoupled, so that the seabed node floats upwards.

Disclosed are a device and method for rapidly regulating downhole pressure after a kick in deepwater shallow open-circuit drilling. The device includes a real-time monitoring device and a real-time regulation device. Aiming at deepwater shallow open-circuit drilling characteristics, the present disclosure proposes that a drilling fluid return condition at a seabed is monitored through a subsea remote operated vehicle (ROV); based on this data, whether gas influx occurs in a downhole or not and changes of the gas influx rate and the formation pressure after the gas influx are analyzed in real time, and then real-time guidance is provided for the design of key parameters such as well killing fluid displacement and density, and the well killing fluid displacement and density are regulated in real time, to achieve rapid regulation of the downhole pressure after gas influx of deepwater shallow open-circuit drilling.

The invention discloses an underwater connector for an offshore oil and gas pipeline, the underwater connector for the offshore oil and gas pipeline comprises a first connecting pipe, a second connecting pipe and a connecting assembly, the first connecting pipe is suitable for being connected with a first external pipeline and communicating with the first external pipeline, and the second connecting pipe is suitable for being connected with a second external pipeline; the second connecting pipe is suitable for being connected with a second external pipeline and communicating with the second external pipeline, the connecting assembly comprises a shell, a driving part and a plurality of clamping parts, the shell is arranged on the peripheral side of the first connecting pipe in a sleeving mode and connected with the first connecting pipe, and the inner circumferential face of the shell and the outer circumferential face of the first connecting pipe are arranged in a spaced mode in the inside-outside direction to form a mounting cavity; the driving part is arranged in the mounting cavity and can move relative to the shell in the length direction of the shell, the multiple clamping parts are all arranged in the mounting cavity and arranged in the circumferential direction of the first connecting pipe at intervals, and one end of each clamping part is movably connected with the first connecting pipe. The underwater connector for the offshore oil and gas pipeline has the advantages of being high in connecting efficiency, good in connecting effect and the like.

A subsea fluid processing system includes an electric motor that rotates a shaft on which impellers are fixedly mounted. Diffusors are static and fixed to the pump housing. The electric motor includes a rotor surrounding the shaft and a stator that is filled with a dielectric stator fluid. The stator is sealed or “canned.” The inner surface of the stator which faces the rotor is canned with a canning non-metallic material. The motor, as well as bearings for the rotating shaft are lubricated and cooled with a fluid that in some cases is taken from the process fluid and some alternative source. Alternative sources include: MEG, methanol, treated seawater and untreated seawater.

An arrangement and a method for preventing collection of debris on or for removing debris, such as cuttings, from the top of a closed riser sealing device (215) in a subsea riser (1). The arrangement comprises a flushing line and at least one flushing fluid inlet (294) to direct a jet of flushing fluid into said riser (1). The inlet (294) directs flushing fluid into a space in the riser (1) immediately above said closing element. The invention also relates to a swirl element (351) located immediately above the riser sealing device (215) and being rotationally coupled to a drillstring (11).

The invention discloses a simulation platform for autonomous tracking of a subsea pipeline by a UUV. The simulation platform comprises a mother ship command and control node system used for issuing a task instruction to a UUV motion control and situation display system; the UUV motion control and situation display system is used for sending a course adjustment instruction to the UUV underwater unmanned vehicle and carrying out real-time graphical dynamic display on the navigation information of the UUV underwater unmanned vehicle; the UUV side-scan sonar model system is used for receiving the motion attitude information of the UUV underwater unmanned vehicle and carrying out detection result data production calculation on a target area in combination with the motion attitude information; the UUV subsea pipeline detection and identification system is used for carrying out pipeline identification according to side scanning detection result data and sending pipeline information to the UUV pipeline tracking strategy system; the UUV pipeline tracking strategy system is used for calculating the track information of the UUV underwater unmanned vehicle according to the pipeline information and the navigation information of the UUV underwater unmanned vehicle, and sending the track information to the mother ship command control node system.

The invention provides a submarine topography classification method and device, electronic equipment and a storage medium, and relates to the technical field of image processing.The submarine topography classification method comprises the steps that backscattering data and water depth data corresponding to a target submarine area are input into a first modeling network and a second modeling network respectively, extracting a context feature of the backscattering data through a first modeling network to obtain a first modal feature, and extracting a context feature of the water depth data through a second modeling network to obtain a second modal feature; fusing the first modal feature and the second modal feature through a modal shuffling network to obtain a fused feature; performing enhancement processing on the fusion features through an adjacent matrix in the graph transformer network to obtain enhanced features; performing up-sampling processing on the enhanced features through an up-sampling network to obtain target features; and determining a terrain classification result of the target seabed area according to the target features. According to the method, the classification precision of the submarine topography and landform is remarkably improved.

An underwater pile foundation comprises a pump in fluid communication with an internal chamber of the pile to pump water out of or into the chamber. This reduces or increases the pressure of water in the chamber relative to ambient pressure of water outside the chamber during installation or removal of the pile. While that pumping phase is ongoing, and potentially before or after that pumping phase, a pressure variator in fluid communication with the chamber imparts oscillations in the pressure of the water in the chamber. The resulting pressure waves in water within the chamber reduce resistance to movement of the pile relative to soil in which the pile is embedded.

A gravity type variable-length seabed single-point mooring connecting device of a floating fan comprises a floating body with at least two pulley fairlead devices, a single-point anchor arranged on the seabed and connected with a rotatable device, and at least one weight located in water below the floating body. Wherein the heavy block is connected with the single-point anchor through a mooring rope passing through the pulley fair lead. The offshore mooring system is small in seabed coverage area, environment-friendly, high in mooring system efficiency, safer, more reliable, practical and feasible, has a wind indicator function, and can be used for offshore mooring positioning of the floating type wind power platform with the water depth ranging from 50 m to 300 m or even larger than 1500 m.

The utility model discloses a deep sea pipeline connector which comprises a connector body, the connector body comprises a connecting pipe, a mounting assembly located at the end of the connecting pipe and a fastening assembly, and a subsea pipeline to be maintained is in butt joint with the end of the connecting pipe after being inserted into the mounting assembly and axially pressed through the fastening assembly; a mounting frame, wherein the mounting frame is detachably connected with the connector body; and the driving part drives the mounting frame to move in the direction close to or away from the connector body. When a deep-sea pipeline is broken or damaged, the pipeline can be quickly connected, and the connector can be separated and recycled, so that the cost of consumables is reduced.

A system and process for subsea fiberoptic logging of a well has a subsea structure having a central bore, an upper valve positioned in the central bore, a lower valve positioned on the central bore below the upper valve, and a subsea probe releasably connected to an upper connector of the subsea structure. The subsea structure has at least one channel adapted to connect to a downline. The upper valve is movable between an open position and a closed position. The lower valve is movable between an open position at a lower position. The channel opens to the central bore in an area between the upper valve and a lower valve. The subsea probe has a fiberoptic line connected thereto. The fiberoptic line is adapted to extend to a portion of the central bore of the subsea structure and into the well so as to sense parameters within the well.

The invention provides a seabed data center double-loop cooling system suitable for a shallow sea area, and the system comprises a heat exchanger which is respectively communicated with a pressure reducing valve, a cooling working medium storage box and a compressor through a first circulation loop; the heat exchanger is provided with an open-loop cooling channel, seawater circulates in the open-loop cooling channel, and the cooling working medium in the circulation loop is cooled through the seawater. Seawater can also directly cool the subsea data center cooling housing through the second circulation loop via valve control. According to the invention, the cooling requirements of the seabed data center can be met at different seawater temperatures through the two circulation loops, and meanwhile, the energy consumption and the PUE value of the cooling system are reduced.

A system and a method for controlling a subsea blowout preventer stack with a subsea well control system having sensors and a well control programmable logic controller. The sensors are coupled to the subsea blowout preventer stack and a subsea blowout preventer control system. The subsea blowout preventer control system operates the subsea blowout preventer stack. The sensors sense a condition of the subsea blowout preventer stack and the subsea blowout preventer control system and transmit a signal representing a value of the condition to the well control programmable logic controller. The well control programmable logic controller receives the signal from the sensors, compares the value to a preset value, and in response to the value greater than or equal to the preset value, and transmits a command signal to the subsea blowout preventer control system to seal a fluid flow through the subsea blowout preventer stack.

The invention relates to the technical field of a seabed substrate advanced detection device and method for a seabed mining vehicle, and provides a seabed substrate advanced detection device and method for a seabed mining vehicle, which can simultaneously obtain submarine topography and landform and detect multiple parameters of a seabed substrate. The deep sea detection system is matched with a mine car to ensure smooth proceeding of a rear mine car in deep sea bottom detection, and comprises a sea surface data processing system and a frame with the cross section in a structure shaped like a Chinese character'tian ', a master control device, a signal receiver and at least four detection modules arranged in a matrix are arranged on the frame, and the master control device is used for controlling the detection modules. The signal receiver is used for transmitting information of the detection module and the sea surface receiving device; the detection module comprises a side-scan sonar module used for rapidly obtaining the topography and landform in front, a transverse push toothed plate used for cutting into a soil body, a turbidity meter module used for measuring the concentration of suspended particles and dissolved matters in the seabed, and a pressing plate module used for obtaining the bearing capacity and the subsidence index of the seabed sediment.

The utility model relates to the field of ocean engineering, in particular to an underwater hauling device for a submarine pipeline, which comprises a plurality of buoys and a plurality of counterweights, the buoys are arranged at intervals along the length direction of the pipeline, the counterweights are arranged at intervals along the length direction of the pipeline, the buoys lift the pipeline, the counterweights pull down the pipeline, and the pipelines are arranged at intervals along the length direction of the pipeline. The conduit is configured to be suspended in water. According to the underwater hauling device for the submarine pipeline, the pipeline is suspended in water by arranging the buoy and the counter weight, so that the pipeline can be hauled away from the bottom between a floating hauling method and a bottom hauling method, the pipeline is not in direct contact with the seabed and is not influenced by the seabed, and therefore only small hauling force is needed, and the pipeline can be hauled away from the bottom. And the pipeline can be prevented from being affected by surface wind wave flow like a floating dragging method, and the device is simple in structure, convenient to use and good in effect.

The invention discloses a shallow sea area water depth inversion method based on a satellite-borne laser radar, and particularly relates to the technical field of single-photon water depth information extraction. The denoising method comprises the following steps: S1, data preprocessing: reading data, carrying out visual presentation, dividing photons into offshore photons, sea surface photons and undersea photons, and intercepting an effective photon region; s2, coarse denoising: denoising the area intercepted in the step S1 by adopting a DBSCAN (Density Based Spatial Clustering of Applications with Noise) algorithm; s3, fine denoising: screening effective signals of sea surface photons by adopting a Gaussian fitting algorithm, removing sea photons, separating subsea photons from the sea surface photons, performing density analysis on the subsea photons, extracting a density peak point, and constructing a density trend curve of the subsea photons by adopting a cubic spline interpolation method, eliminating residual noise deviating from normal distribution according to the trend curve; and S4, performing water depth inversion: performing refraction correction on the subsea photons subjected to fine denoising, fusing the corrected subsea photons and the sea surface photons subjected to fine denoising, and generating a water depth distribution diagram of the shallow sea area.

An apparatus for controlling a subsea blowout preventor (BOP) includes a control system for controlling a subsea BOP of a subsea stack assembly installed over a subsea oil and gas well. The control system includes a first topside control device and a second topside control device, and a first subsea control device and a second subsea control device. The first topside control device, the second topside control device, the first subsea control device, and the second subsea control device are each communicatively connected with the BOP and operable to control operation of the BOP. The first subsea control device is a portion of a first control pod of the subsea stack assembly. The second subsea control device is a portion of a second control pod of the subsea stack assembly. The first topside control device is communicatively connected with the second topside control device via a ring communication network.

The invention discloses a positioning method for submarine pipeline laying for an arc-shaped route. The positioning method comprises the following steps: selecting a plurality of monitoring points on a pipe laying ship; the pipe laying ship is used for laying subsea pipelines, and the positions of the multiple monitoring points on the pipe laying ship are different; the design route of the subsea pipeline is an arc-shaped route; a measuring module and a control module are arranged on the pipe laying ship; determining parameters of the arc-shaped route; the parameters of the arc-shaped routing comprise a circle center, a radius, a starting point and an ending point; calculating theoretical track lines of the plurality of monitoring points; the actual position of each monitoring point is obtained by using the measurement module and the control module; and calculating the deviation between the actual position and the theoretical track line, and giving an early warning when the deviation exceeds a preset value. According to the positioning method for submarine pipeline laying for the arc-shaped route, the submarine pipeline can be laid on the arc-shaped route by the pipe laying ship along the optimal path.

A subsea line clamp assembly (1) has a body (10) having an axis and a clamp member (50), assembled in segments around a subsea line (3), and tethered to a subsea anchor (5). The clamp member (50) is movably located within the body (10). The inner surface of the body (10) and the outer surface of the clamp member (50) have respective tapered portions as part of teeth (32, 72) arranged to inter-engage. Adjacent teeth (32, 72) may be separated by axis-parallel portions. The clamping force on the subsea line (30) can be maintained at a consistent clamping force throughout the service life of the subsea line (3), despite the actions of creep and compression acting to reduce the outer diameter of the line (3).

The invention provides a multifunctional experimental device and method for simulating a corrosion state in a submarine pipeline, and belongs to the field of pipeline corrosion internal detection. The experimental device comprises an experimental device body, a heating device and a circulating pump, a medium in the experimental device body can be externally heated through the circulating pump, and in other words, the circulating pump can continuously convey the medium heated by the heating device to the experimental device body. The test method comprises a corrosion coupon experiment, a corrosion probe experiment and a double-layer pipe annulus corrosion simulation experiment. When a corrosion coupon experiment and a corrosion probe experiment are carried out, a corrosion probe and a corrosion coupon are respectively inserted into the experiment device main body, and corrosion rate data are continuously monitored and detected for 7 days; when a double-layer pipe annulus corrosion simulation experiment is carried out, wireless wall thickness detectors are sequentially attached to the three clamping grooves, and the average corrosion rate of the wireless wall thickness detectors is based on thickness measurement data of the wireless wall thickness detectors. According to the invention, a plurality of corrosion rate simulation parallel experiments can be simultaneously carried out, the operation is simple, the safety is high, and the controllability is high.

The invention relates to the field of submarine pipeline connecting devices, in particular to a step-by-step type submarine pipeline connector which comprises a lower flange and a middle flange, a sealing assembly is arranged in an inner hole of the lower flange, a slip is arranged in an inner hole of the middle flange, the middle flange is in threaded connection with an adjusting screw, and the adjusting screw is provided with a pressing sleeve pressed on the sealing assembly. The adjusting screw is used for driving the pressing sleeve to push the sealing assembly to seal the pipeline, the middle flange is connected with an upper flange through a stud, the stud penetrates through the upper flange, the end, penetrating through the upper flange, of the stud is in threaded connection with a compression nut, a slip bowl is arranged at the end of the upper flange, and the compression nut is used for driving the slip bowl to push the slip to tightly hold the pipeline. Through the arrangement of the adjusting screw, the upper flange and the adjusting screw are used for controlling pipeline holding and pipeline sealing respectively, so that the pipeline sealing process and the pipeline holding process are mutually independent and do not influence each other, and the situation that the pipeline repairing effect is reduced due to the fact that leakage is likely to occur after pipeline repairing caused by unified control of the two processes is reduced.