2095 results about "Ocean environment" patented technology

A method for improving vibratory source seismic data uses a filter which converts a recorded seismic groundforce signal (including harmonic distortion therein) into a desired short-duration wavelet. A plurality of surveys may be carried out using a plurality of sweeps from plurality of vibrators that have their relative phases encoded, the groundforce signal of each vibrator being measured. The recorded seismic reflection signals are then processed to separate out the signals from each vibrator. In another aspect, harmonics of upto any desired order may be canceled while carrying out multiple surveys with a plurality of vibrators. In a marine environment, the recorded signal from a vibrator towed by a moving vessel is used to derive a Doppler shift correction filter that is applied to reflection seismic data.

Methods, apparatus, and systems for accurately estimating acoustic propagation velocity are described. One method comprises deploying in a marine environment a towed seismic spread comprising a plurality of acoustic positioning transmitters and a plurality of positioning point receivers, and using travel times for signals between at least some of the transmitters and point receivers to derive a mathematical model describing acoustic propagation velocity for the marine environment as a function of at least one spread spatial dimension, distances between transmitters and receivers, and any combination thereof. This abstract is provided to comply with the rules requiring an abstract, and allows a reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

A method of conducting multiple source, multiple signal seismic surveys in a marine environment are provided.

The present invention relates to a polymer paint composition for waterproof and anticorrosion of concrete, which prevents neutralization and salt damage of concrete gradually degraded by external environment, by fundamentally blocking the material causing such damage, and a method for waterproof and anticorrosion of concrete structure using the same. In particular, the present invention relates to a paint polymer composition for preventing neutralization and salt damage of concrete structures in the atmosphere or under water, such as concrete structures in various marine environments, harbor structures, underground structures, exposed structures, structures neutralized by aging, bridge structures repeatedly exposed to wetness and dryness, structures exposed to chemical erosion by calcium chloride, SOx, NOx, etc. In more particular, the present invention relates to a polymer paint composition which has an excellent ability of preventing salt damage and neutralization, is capable of controlling hardening time in the air or under water, and has excellent adhesiveness with concrete structures.

A machine and system for power generation through movement of water having an array of power generating cells electrically interconnected, where the array is configured in an interchangeable modular fashion and the cells are positioned to receive kinetic energy from the movement of water to generate electricity through the movement of an electrical turbine within each cell. The individual turbines and cells may generate relatively small amounts of electricity and use polymer magnetics in the impellers and windings in the turbine to withstand ocean environments and are stacked on electrically conductive trays for ease of installation and replacement.

An autonomous open-ocean fish-farming structure has a submersible cage enclosure tethered to a topside buoy. The topside buoy stores feed, is equipped with radio telemetry to communicate positioning signals transmitted from external sources, and generates electrical power using, for example, a hybrid solar OTEC heat engine. The structure is navigated and maintained in a geostationary position within the ocean environment by means of position-correction technology and is propelled by thrusters attached to the cage enclosure and, optionally, to the underside of the topside buoy. The self-positioning, self-powered fish-farming structure enables unmanned, extended marine deployment in deeper ocean waters without the need for tethering or anchoring to the ocean floor. Multiple structures can be maintained in a spaced apart configuration to comprise a flotilla of fish farming structures attended by a tender ship that is autonomous, easily serviced and conveniently relocated.

Many different types of systems are utilized or tasks are performed in a marine environment. The present invention provides various configurations of unmanned vehicles, or drones, that can be operated and / or controlled for such systems or tasks. One or more unmanned vehicles can be integrated with a dedicated marine electronic device of a marine vessel for autonomous control and operation. Additionally or alternatively, the unmanned vehicle can be manually remote operated during use in the marine environment. Such unmanned vehicles can be utilized in many different marine environment systems or tasks, including, for example, navigation, sonar, radar, search and rescue, video streaming, alert functionality, among many others. However, as contemplated by the present invention, the marine environment provides many unique challenges that may be accounted for with operation and control of an unmanned vehicle.

The invention relates to an ocean environment monitoring and early warning system, especially relating to an offshore ocean environment real-time monitoring and calamity early warning system based on Internet of things and a geographical information system. The invention is aimed at realizing on-line real-time dynamic monitoring and solves a practical problem that present ocean environment monitoring technology and method are only established on a sampling analysis base. A monitoring device of the system acquires a meteorological element, a hydrological element, GPS information and video monitoring information. Communication between monitoring buoys is realized through a wireless sensing network, and communication between a monitoring ship and an offshore monitoring terminal and communication between offshore monitoring terminals are realized through a wireless microwave communication network. The offshore monitoring terminal sends data to a remote monitoring center through a mobile communication network, the monitor center completes data reception, storage and management, and publishes GIS service and Web service information. Early warning information is automatically sent to an intelligent mobile phone terminal through a background management program. A monitoring early warning information platform provides related service information to a user for browse access.

A camera head for use in a marine environment having a cylindrical watertight housing, top and bottom plate members closing the cylindrical housing, and a plurality of ports through the vertical wall of the housing and positioned at a regular angular intervals. A transparent pane is sealed over each port, retained in place by compression against a gasket or O-ring by a compression member. A corresponding plurality of cameras are fixedly positioned behind the ports and the angular field of view of each camera is selected to be greater than the angular interval between the ports such that a continuous 360-degree view of the marine environment is always visible. Six 72-degree FOV cameras spaced at regular 60-degree intervals are preferred. The housing contains cooling / ventilation as well as power and image processing and control systems so as to be self contained.

Invention relates to a novel method of and system for ranging between an acoustic source carried on an unmanned or autonomous undersea mobile vehicle (UUV or AUV) and preferably a plurality of hydrophone receivers remotely deployed from the vehicle in predetermined patterns, generally suspended from sonobuoys equipped with above-the-sea relay radio transmitting antennas, and with time synchronization provided amongst the source and the receivers, wherein the time delay from the transmissions of the source is measured by utilizing special signal processing, enabling range to be measured in close to real time by determining the product of the sound velocity and the measured time delay, and with the process continually and periodically being repeated throughout the duration of the vehicle run. Given the range, the system may then be used to measure the acoustical properties of and / or receiver system performance in the sea or other water body, such as transmission or propagation loss TL, channel impulse response, bottom geoacoustic properties, source level, receiver sensitivity calibration, sonar operator readiness and sonar receiver performance and the like. Further, in situ measured data can be assimilated with models to enable more accurate prediction of the ocean environment than could be obtained from either individually.

A resonant, contactless, RF power coupling suitable for high power-density applications and for use in an ocean environment is disclosed. In the illustrative embodiment, the power coupling includes a transmit coupling and a receive coupling, each of which include a resonant element. A high-powered RF generator is coupled to the transmit coupling and a rectifier circuit is coupled to the output coupling. Each of the resonant elements is disposed in its own electrically-conductive canister and advantageously potted in an appropriate insulating dielectric. Each canister has an open end to facilitate inductive coupling between the two resonant elements. In order to exclude seawater from the interface between the canisters, a seal of compliant material is disposed therebetween.

This invention relates to a composition and use application of aqueous fluidized polymer suspensions of water soluble polysaccharides and / or polyvinyl alcohol (PVA) for use in oil field applications such completion fluids, drilling fluids, fracturing fluids and oil well cement slurries as rheology / viscosity modifier and fluid loss reducer for use where the affect on the marine environment is to be minimized.

The invention relates to a novel concrete artificial fish reef which is prepared from the following raw materials in proportion: cement, sand, stones, mixing water, oyster shell powder, fly ash and mineral powder, wherein the weight ratio of the raw materials is 1:(1.9-2.6):(2.8-3.9):(0.4-0.6):(0.1-0.2):(0.1-0.3):(0.1-0.5). A preparation method of the novel concrete artificial fish reef comprises the following steps of adding the raw materials to a concrete mixer, stirring, then placing on a vibrating table for vibrating uniform compaction, and splitting a mould after 12-34 hours; and after the mould is split, carrying out standard maintenance for 28 days. The novel concrete artificial fish reef disclosed by the invention can not dissolve out a harmful substance in a using process or influence the biological adhesion, has no pollution on the environment, is more suitable for an ocean environment on property and can be improved in artificial fish reef effect.

The invention discloses an ocean environment visualization method. Based on the combination of the ocean environment three-dimensional scene and a parallel coordinate method, the method comprises the concrete steps of modeling the three-dimensional scene and the parallel coordinates of ocean environment; secondly establishing a multi-dimensional element integrated rendering and interactive extraction algorithm based on the three-dimensional scene and the parallel coordinates of the ocean environment; thirdly expressing the multi-dimensional ocean environment data linked features and cluster features. The method can be used for knowledge discovery of ocean phenomena such as storm tides, red tides, ENSO circulation and the like, and provides a new idea for understanding, rebuilding and discovering ocean phenomena.

The invention relates to a flexible intumescence fire-retardant coating and a preparation method thereof, and belongs to the field of functional coatings. The flexible intumescence fire-retardant coating is composed of a component A and a component B. The component A is prepared from epoxy resin, reactive diluent, synthetic elastomer, flexibilizer, a catalyst, a carbon-forming agent, a foaming agent, fire retardant, auxiliaries and solvent. The component B is prepared from a curing agent, a curing accelerator, pigment filler, auxiliaries, refractory fibers and solvent. The flexible epoxy intumescence fire-retardant coating prepared through the method has certain flexibility, and is particularly suitable for fire-retardant protection of the surface of a flexibility or deformation base material and the surface of a shapeless base material or the surface of light metal. In addition, the flexible epoxy intumescence fire-retardant coating prepared through the method has excellent water resistance, medium resistance, ageing resistance and salt-fog resistance and is suitable for fire-retardant protection of hydrocarbon fire potential risk areas in the ship, airplane and ocean environment and the petrochemical industry.

The invention relates to an ocean spilt oil film thickness hyperspectral remote sensing estimation method based on a parameter lookup table and belongs to the field of ocean environment monitoring research. The method includes the steps of obtaining and pre-processing standard oil film thickness continuous change hyperspectral data by designing a simulation experiment; obtaining and pre-processing ocean spilt oil satellite remote sensing data; resampling a standard oil film spectrum based on a satellite sensor performance index; normalizing spectral reflectivity; building an oil film thickness optical calculating model; building an attenuation parameter lookup table; normalizing the reflectivity of satellite data and conducting mask treatment; inquiring and building an optimal wave band of the satellite data and relevant parameters; and calculating the oil film thickness in the satellite data through the parameter lookup table and the optical model. Compared with a traditional observation means, by means of the ocean spilt oil film thickness hyperspectral remote sensing estimation method, field workload is less, the thickness of the spilt oil film can be quantized, the thickness of an oil film in a spilt oil area can be calculated without entering an ocean spilt oil pollution area, and requirements of ocean split oil emergency monitoring and evaluation can be met.

The invention discloses a floating type production platform capable of taking well drilling and oil storage into consideration. The floating type production platform comprises an octagonal-prism floating body with an octagonal horizontal section and a deck, wherein a ballast water tank, an oil storage tank, a production functional cabin, a well-drilling equipment cabin and a pump cabin; the deck is arranged on the floating body; an oil gas treatment system, well-drilling equipment and a positioning mooring system are arranged on the deck; and a moon pool is arranged on the floating type production platform. The floating type production platform has the functions of oil gas production, storage, transportation and well drilling, can be migrated and reused, is flexible and suitable for early trial production and well drilling development of an oil field with the water depth of more than 100 m, and can effectively reduce the economic risk of development of the oil and gas field. The floating type production platform has the same longitudinal and transverse size, has the size less than the longitudinal size of the boat type FDPSO, has basically same environmental force from each direction under the same environment condition and has the environmental force less than that of the boat type FDPSO under the transverse environment, adopts a multi-point mooring system, and can meet the requirements of platform well drilling and oil and gas production operation under the sever marine environment such as the South China Sea and the like.

The invention discloses a preset performance ocean bottom flying node trajectory tracking control method based on a disturbance observer, relates to a preset performance ocean bottom flying node trajectory tracking control method, and aims to solve the problems that an existing method does not consider modeling uncertainty and ocean environment disturbance and propeller faults affect the OBFN (Ocean Bottom Flying Node). The method comprises the following steps that: 1: establishing a Fossen outline six-degree-of-freedom nonlinear kinetic model; 2: carrying out OBFN kinetic model transformationon the nonlinear kinetic model established in S1 to obtain an OBFN kinetic model, and determining an OBFN tracking error equation according to the OBFN kinetic model; 3: establishing a performance function; 4: carrying out error transformation on the tracking error in the S3 to obtain a transformed error; and 5: according to the transformed error obtained in S4, designing an OBFN system total uncertainty observer and a preset performance trajectory tracking controller. The method is used in the field of trajectory tracking control.

The invention relates to a radar imaging method of an electrically large size target in the ocean clutter environment. The radar imaging method is that the radar imaging of the electrically large size target in the ocean clutter environment is achieved by establishing a surface-box complex target scattering model in a multi-interference environment and adopting electromagnetic simulating calculation through a numerical and analytical hybrid algorithm and a rapid back projection imaging mode. The electrically large size in the radar imaging method means that the ratio of the physical dimension to the wavelength of the target is larger than ten. The working frequency range of a radar is generally in a high frequency area, for example, the L waveband frequency ranges from 1GHz to 2 GHz, and the S waveband frequency ranges from 2GHz to 4 GHz. Some military targets, such as fighters, invisible planes and aircraft carriers in the L waveband and the S waveband belong to the electrically large size. According to the radar imaging method, the radar imaging of the electrically large size target in the ocean clutter environment can be achieved by means of geometric modeling of complex targets, the electromagnetic simulating calculation, the rapid back projection imaging algorithm and Kaiser window edge filtering.

The present invention discloses a petroleum degrading strain CN-3, which is preserved in China Center For Type Culture Collection, and the accession number is CCTCC M 2015537. A screening medium and a degradation medium used in experiments both use petroleum as a sole carbon source and sole energy, and the screened-out CN-3 strain is highly efficient in petroleum degradation. The petroleum degrading strain CN-3 has good petroleum degradation effect in the neutral to slightly alkaline environment, can withstand high salinity environment, and is especially suitable for the marine environment, so that the range of application of the petroleum degrading strain CN-3 in marine oil pollution treatment is expanded, and the petroleum degrading strain CN-3 has more application prospects.

The invention discloses a bottom-exploration zigzag-type deep sea submerged buoy system which comprises a spherical pressure-resisting cabin and a trigger action mechanism, wherein the bottom of the spherical pressure-resisting cabin of a submerged buoy body is provided with the trigger action mechanism, thus the submerged buoy which is vertically submerged to the bottom of the sea starts the trigger action mechanism at the instant of contacting the bottom, sea bottom sampling is finished and loads are released and thrown, the submerged buoy floats upward so as to complete the acquisition of vertical section information of a sea water column from the sea level to the sea bottom for the deep submerged section floating buoy; the spherical pressure-resisting cabin is formed by the connection of upper and lower semispherical end covers through bolts; the trigger action mechanism comprises an injector-type sampling mechanism, a throwing and loading mechanism and a deep bottom trigger mechanism; the top of the semispherical upper end cover of the spherical pressure-resisting cabin is provided with a thermohaline deep measuring transducer; and cameras are installed in camera holes which are uniformly distributed circumferentially on the semispherical lower end cover. The bottom-exploration zigzag-type deep sea submerged buoy system disclosed by the invention is simple in structure, low in cost and reliable in operation; and complete water column images and water quality information from the sea water level to the bottom of the ocean can be recorded, and substance sampling at the sea bottom can be realized, and a new prospect is developed in the applications of marine environmental monitoring for the deep submerged section floating buoy.

The invention relates to an arrangement for seismic streamers used in the acquisition of seismic data in a marine environment where the spacing between each adjacent pair of streamers is not all the same. Some streamer spacings and / or receiver spacings are larger and some are smaller to provide a higher quality wavefield reconstruction when covering a larger total area or for a similar total area of seismic data acquisition while providing a wavefield that is optimally sampled by the receivers so that the wavefield reconstruction is suitable for subsurface imaging needs.

The invention discloses an acoustic flow measurement device and a method thereof. The acoustic flow measurement device is adopted between observation stations for sending sound waves to the opposite side simultaneously, then receiving sound waves transmitted by the opposite side, the bidirectional propagation time of the sound waves between the two observation stations is obtained by calculating; the difference and the sum of the acoustic signals bidirectional propagation time are used for reversing the mean velocity and the average temperature between observation stations. The invention can carry on the vertical sample based on sound propagation multi-path effect by only using a pair of sound-source-receiver; as the ocean interior images can be obtained by observing the external measurement of the sea; compared with the traditional method, the synchronous measurement with the large-scale and long time between two points by using a pair of instruments can be realized; the collection performance of the sound propagation can obtain ocean environment parameters with the vast scale in space and the average time which can not be obtained by the traditional point sensor; the method solves the problem that the observing is affected by shipping and fisheries activity.

The invention relates to fair-faced concrete. The fair-faced concrete is prepared from a binding material, a composite water reducer, water and aggregate, wherein the amount of the binding material in the fair-faced concrete is 380-480kg / m<3>; the binding material comprises the following components in parts by weight: 45-70 parts of cement, 10-30 parts of coal ashes and 20-50 parts of granulated blast-furnace slag; the amount of the composite water reducer accounts for 0.5%-1.1% of the binding material; the composite water reducer comprises a polycarboxylate superplasticizer, a defoamer, an air entraining agent and a tackifier; the amount of water accounts for 0.32-0.45 times of the binding material; and the balance is the aggregate. The invention further relates to an application of the fair-faced concrete in ocean engineering construction. The fair-faced concrete provided by the invention is excellent in chloride ion permeability resistance, smooth in surface, and uniform in color and luster; the sum of the area of air bubbles of which the surface area is greater than 1m<2> is not greater than 6*10<-4>m<2>; the maximal diameter of the air bubbles is not greater than 5mm; the depth is not greater than 5mm; and the fair-faced concrete is low in air content and bleeding rate, and can be used in an ocean environment for a long period of time.

Method for using the full wavefield (primaries, internal multiples and free-surface multiples) in inversion of marine seismic data, including both pressure and vertical velocity data (21), to infer a subsurface model of acoustic velocity or other physical property. The marine seismic data are separated (22) into up-going (23) and down-going (24) wavefields, and both wavefields are inverted in a joint manner, in which the final model is impacted by both wavefields. This may be achieved by inverting both wavefields simultaneously (25), or one after the other, i.e. in a cascaded approach (35→37, or 45→47), for the subsurface properties (26, 38, 48).

The invention relates to a hydraulic control system for a ship traction winch, a transmission device and a control method for ocean traction, lifting and load collection and release. The hydraulic control system comprises a hydraulic pump, a hydraulic motor, a speed reducer, a drum, a brake oil cylinder, a stopper oil cylinder, a control valve set, an auxiliary element and a pipeline. In a hydraulic winch system, an adjustable pressure overflow valve is embedded; the working pressure of the overflow valve can be set according to change of sea conditions; and the pressure acted on the hydraulic motor is limited, so that a cable is always located in a proper tensioning state, and the wave compensation capacity is achieved. The hydraulic control system can largely reduce the change of tension in the cable to adapt to different wave requirements, can be used for normal operation, can realize control of constant tension, guarantees stable and safe load collection and release operation, and can effectively improve the operation capacity of the whole winch under complex ocean environment.

A MEMS-based silicon pressure sensor for the ocean environment is presented. The invention is a multiple diaphragm piezoresistive pressure sensor for measuring the pressure of a liquid, comprising an inner deformable diaphragm formed on a silicon substrate, the inner deformable diaphragm having a first thickness an outer deformable diaphragm formed on the silicon substrate, the outer deformable diaphragm having a second thickness which is greater than the first thickness, positioned below the inner deformable diaphragm to support the inner deformable diaphragm, a first piezoresistive bridge embedded in the inner deformable diaphragm, a second piezoresistive bridge embedded in the outer deformable diaphragm and possibly a third piezoresistive bridge embedded in the silicon substrate to compensate for temperature variations.