947 results about "Subsea" patented technology

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 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 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.

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.

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.

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.

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.

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 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 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.

The present invention discloses a carry-on multifunctional underwater geotechnical in-situ testing machine, comprising an in-situ testing mechanism and a submersible carrying the in-situ testing mechanism, wherein the in-situ testing mechanism comprises a multi-head hydraulic arm and a mechanical arm, wherein the multi-head hydraulic arm is arranged at the front end of the mechanical arm, and the end of the mechanical arm is connected to a rotating device in the submersible, wherein the multi-head hydraulic arm is provided with a plurality of chambers loaded with different in-situ testing equipment and a hydraulic system, wherein each chamber is provided with a hydraulic clamping groove and a hydraulic clamp is arranged in the hydraulic clamping groove, and each in-situ testing equipment is clamped on the hydraulic clamp in the corresponding chamber. The carry-on multifunctional underwater geotechnical in-situ testing machine can conduct various geotechnical in-situ tests on underwater geotechnical bodies at a calibrated working depth, which can greatly improve the speed of underwater geotechnical in-situ testing and reduce the test cost of underwater geotechnical in-situ testing, and has a simple structure, diverse functions and is easy to operate.

A floating power-generation group comprises a floating hub such as a spar buoy that is anchored to subsea foundations by anchor lines. Floating power producer units such as wind turbines are connected electrically and mechanically to the hub. The power producer units are each moored by mooring lines. At least one mooring line extends inwardly toward the hub to effect mechanical connection to the hub and at least one other mooring line extends outwardly toward a subsea foundation. The groups are combined as a set whose hubs are connected electrically to each other via subsea energy storage units. Anchor lines of different groups can share subsea foundations. The storage units comprise pumping machinery to expel water from an elongate storage volume and generating machinery to generate electricity from a flow of water entering the storage volume. The pumping machinery can be in deeper water than the generating machinery.

A subsea termination assembly comprising a main body, a stab pin with a stabbing end for guiding of the subsea termination assembly during landing on a receiving subsea structure, and a hinge assembly connecting the stab pin to the main body. The subsea termination assembly comprises a connected portion that is pivotably attached to the main body with the hinge assembly. The stab pin comprises a free portion and the free portion comprises the stabbing end. The subsea termination assembly comprises a stab pin connection arrangement, detachably connecting the free portion to the connected portion. A method is also disclosed.

Provided are an intelligent operation and maintenance optimization method and intelligent production optimization method for an offshore oil subsea production system (SPS), and a system, relating to the field of petroleum engineering. The operation and maintenance optimization method includes: determining whether there is a leak in an SPS; and if there is a leak, performing emergency repair; or if there is no leak, performing intelligent operation and maintenance optimization. The performing intelligent operation and maintenance optimization includes: calculating a static health index of the SPS based on ashore sensor status data and Christmas tree sensor data; obtaining dynamic health indexes at different moments through a Kalman filtering algorithm; and formulating an optimal maintenance strategy for the SPS with optimization objectives of maximizing toughness and minimizing a maintenance cost.

The invention provides an offshore seabed power generation and energy storage integrated energy system. The system comprises an underwater turbine generator device, an air compressor, a flexible constant-pressure air storage bag and a steam turbine generator. The underwater turbine generator device converts from the undercurrent of the seabed to obtain first electric energy; the air compressor sucks air from the sea level under the driving of first electric energy, and compresses and stores the sucked air in the flexible constant-pressure air storage bag; the flexible constant-pressure air storage bag releases compressed air stored in the flexible constant-pressure air storage bag to a turbonator on the shore; the steam turbine generator is driven by the compressed air released by the flexible constant-pressure air storage bag to rotate, and second electric energy used by the user is obtained through conversion. The seabed pressure and tidal energy are utilized, renewable energy power generation and the compressed air energy storage technology are combined, the intermittent problem of island renewable energy power generation is solved, the defect that storage is not facilitated due to low energy density of compressed air energy storage is overcome, and continuous supply of energy is ensured.

The invention relates to the technical field of deep-sea mining, and discloses a bubble barrier plume restraining device suitable for deep-sea mining operation. The bubble barrier plume restraining device comprises an air source control unit, a posture adjusting conveying pipe, an air conveying relay box, a mining vehicle, a plurality of flow dividing air conveying hoses, a communication cable and a plurality of seabed bubble releasing units. The gas source control unit is communicated with the gas transmission relay box through the posture adjusting transmission pipe, the gas transmission relay box is connected with the multiple seabed bubble release units through the multiple flow dividing gas transmission hoses, the multiple seabed bubble release units define a bubble barrier, and the mining vehicle is located in the bubble barrier. The mining vehicle, the communication cable, the gas transmission relay box, the posture adjustment transmission pipe and the gas source control unit are sequentially connected. According to the method, plume diffusion in deep-sea mining operation is inhibited, and damage of the deep-sea mining operation to the marine environment is reduced, so that the operation efficiency of the seabed bubble barrier is improved; and the posture of the posture adjusting transmission pipe is always maintained in a safe range.

The angle-adjustable underwater well mouth comprises a high-pressure well mouth, a low-pressure well mouth and a low-pressure well mouth extension sleeve, the high-pressure well mouth and the low-pressure well mouth are positioned and adjusted in direction through a first well mouth spherical pair, and the high-pressure well mouth and the low-pressure well mouth are locked through a locking ring; in the tie-back operation mode, a high-pressure well mouth is connected with a flexible insertion sealing pipe through a high-pressure well mouth thin-wall extension sleeve, a tie-back tail pipe hanger is arranged in a low-pressure well mouth extension sleeve, a guide cylinder is arranged at the upper end of the tie-back tail pipe hanger, and a guide head is arranged at the lower end of the flexible insertion sealing pipe. The flexible insertion sealing pipe can enter the tie-back tail pipe hanger under the guiding action of the guiding head and the guiding cylinder; in the non-tie-back operation mode, the common extension sleeve is connected below the high-pressure wellhead, and the sleeve string is connected below the common extension sleeve. The inclined high-pressure wellhead is adjusted to be approximately vertical as required, so that a service tool, a blowout preventer and a Christmas tree are convenient to mount, the stability of the wellhead is enhanced, and the operation risk is reduced.

The invention belongs to the technical field of offshore petrochemical engineering, and particularly relates to a collaborative optimization method for service life and oil and gas yield of an offshore oil underwater production system. The invention provides an offshore oil subsea production system life and oil and gas yield collaborative optimization method, and the method achieves the real-time collaborative optimization control based on life perception through the comprehensive evaluation of the equipment health state and the yield dynamic state. Besides, a steady-state operation and control switching mechanism is further configured, safe transition of the system can still be guaranteed when the health state of the offshore oil underwater production system is deteriorated or operation disturbance occurs, and reliable technical support is provided for improving the control precision and operation toughness of the system. The collaborative optimization method for the service life and the oil and gas yield of the offshore oil subsea production system comprises the following steps: evaluating the health state of the offshore oil subsea production system; predicting the oil and gas yield; carrying out collaborative optimization on the service life and the oil and gas yield of the offshore oil underwater production system; and formulating a steady-state real-time control strategy.

A subsea foundation exemplified by a monopile or a suction pile comprises an embeddable body that extends along an upright embedment axis. A plurality of fins extend outwardly from the body in directions transverse to the embedment axis. At least some fins of the plurality are at least partially embedded in seabed soil. The plurality of fins is divided into an upper array of upper fins and a lower array of lower fins. The arrays may be spaced apart or overlap along the embedment axis, and may be angularly aligned or angularly offset with respect to each other about that axis.

The invention provides a submarine pipeline corrosion rate prediction method, system and device and a medium, and the method comprises the steps: obtaining monitoring data along a target submarine pipeline and pipeline body data; constructing a microbial corrosion random kinetic model based on the monitoring data, and simulating and generating a random microbial corrosion current component; calculating a pipe wall temperature field which is non-uniformly distributed along the axial direction of the pipeline based on the monitoring data and the pipeline body data; calculating an electrochemical corrosion current component based on the pipe wall temperature field and the electrochemical parameters of the pipeline material; performing multi-physics field coupling calculation on the random microbial corrosion current component and the electrochemical corrosion current component to generate a corrosion space-time distribution field; and performing corrosion risk analysis based on the corrosion space-time distribution field to obtain a corrosion risk prediction result. The method can improve the corrosion prediction accuracy of the submarine pipeline.

A subsea foundation 16 for anchoring a mooring line 14 comprises a mooring base 20, such as a chain that is simply laid upon the seabed in a straight, curved or looped configuration, hence extending across the seabed 18 substantially parallel to the seabed. The mooring base is then anchored by one or more deadman anchors 22 that are embedded in the seabed soil. For this purpose, one or more links 24 extend through the soil to couple the mooring base to the or each deadman anchor. One or more mooring lines can then be coupled to the mooring base.

The utility model relates to a telescopic seabed emergency repair adapter of a bending limiter, which comprises a first joint, a second joint, a first telescopic cylinder and a second telescopic cylinder, a telescopic structure is arranged between the first telescopic cylinder and the second telescopic cylinder, and the first telescopic cylinder and the second telescopic cylinder are telescopically lapped together. The telescopic structure enables the length of the first telescopic cylinder and the second telescopic cylinder which are lapped together to change; the first connector and the second connector are the same in structure, the first connector is assembled at one end of the first telescopic cylinder, and the second connector is assembled at one end of the second telescopic cylinder. The telescopic seabed first-aid repair adapter of the bending limiter is simple in structure, easy to operate, high in stability and high in adaptability due to the fact that the telescopic length is variable, and when first-aid repair personnel conduct seabed first-aid repair, operation is easy and convenient, consumed time is short, and safety and reliability are achieved.