12 results about "Natural energy" patented technology

This application provides a method for determining the lower limit radius of movable pore throat after reverse pressure displacement in conglomerate reservoirs. The method first obtains dry core samples from the target conglomerate reservoir. Then, based on the dry core samples, it determines the pore size distribution curve of the dry core samples and the T2 NMR spectrum of the oil-saturated core samples. Based on the pore size distribution curve of the dry core samples and the T2 NMR spectrum of the oil-saturated core samples, it determines the pore throat radius distribution curve of the oil-saturated core samples. Next, it sequentially performs natural energy depletion recovery and reverse pressure displacement on the oil-saturated core samples. After reverse pressure displacement, it determines the pore throat radius distribution curve of the remaining oil in the oil-saturated core samples. Finally, based on the pore throat radius distribution curves of the oil-saturated core samples and the remaining oil, it determines the lower limit radius of movable pore throat in the target conglomerate reservoir after reverse pressure displacement. This method achieves accurate characterization of the lower limit radius of movable pore throat in conglomerate reservoirs after reverse pressure displacement.

The present application relates to the technical field of renewable energy development and seawater desalination, and discloses a deep-geological-ocean energy coupling utilization system and a running method. The system comprises a seawater taking unit, a horizontal full-pipe pressure flow transmission pipeline, a hydraulic power generation unit, a seawater desalination unit and a deep well group unit, and is sequentially connected to form a closed loop through the deep well-pipeline combination constructed by a deep-geological engineering. The present application forms a stable triangular hydraulic distribution along the whole pipeline by artificially setting a water head difference, thereby ensuring that multiple water turbines independently work and power is stably superimposed. The present application can realize long-distance water transmission through the deep well-pipeline, utilize natural energy to assist seawater desalination, and drive reverse osmosis desalination by using the high water head pressure energy of the deep well to generate power. Surplus power can be sent out.

FIELD: mining industry.SUBSTANCE: invention is intended for use in selecting locations for the placement of coal waste dumps during the development of natural energy resource deposits and the disposal of accumulated solid waste from coal mining. The method for selecting locations for coal waste dumps is that in a mining region, using geodynamic zoning, the boundaries of geodynamically active blocks of the earth's crust are identified and the width of the zone of influence of the boundaries of such blocks is determined. Then the coal waste dump site is placed by placing the centre of the site equidistant from the boundaries of the zone of influence of geodynamically active blocks, which represent linear sections of tectonic destruction of the rock massif, and orienting the longitudinal axis of symmetry of the site and its long sides in the east-west direction. After which a coal waste dump is formed. The coal waste dump site is placed near the heat consumer.EFFECT: integrated use of energy resources and improved environmental condition.1 cl, 1 dwg, 1 ex

The present invention relates to a blue carbon process and a blue carbon process system for direct air carbon capture and storage. The natural energy such as wind energy, solar energy and wave energy is used. Only natural seawater (without artificial chemicals) is used to directly capture and store carbon dioxide from air. Amount of the carbon dioxide is measured and calculated. To achieve the climate goal of “net zero” carbon emission, a low-cost and large-scale net negative emission solution with zero carbon footprint, zero artificial chemical footprint and zero land footprint is provided.

This invention belongs to the field of oil and gas reservoir exploration and development technology, specifically relating to a method for estimating the geological reserves of fractured-cavity oil reservoirs. The specific steps include: This invention obtains the abandonment pressure of a target well by analyzing its production data and the relationship between permeability and abandonment pressure coefficient; then, it monitors the cumulative oil production of the target well reaching the abandonment pressure using formation pressure monitoring data; based on the relationship between permeability and natural energy recovery rate (REER) and the permeability of the oil reservoir, it obtains the RER value; and finally, it combines this with the cumulative oil production of the well to dynamically estimate the geological reserves of the target well. This invention is simple to calculate, convenient, and practical. It provides a method for estimating geological reserves when static methods are not feasible, providing a material basis for future development and production capacity construction.

The utility model discloses a kind of ground effect temperature difference collaborative driving's magnetic fluid regulation and control wind power device in the technical field of wind power generation equipment, it includes magnetic suspension generator, magnetic suspension generator has stator, rotor and motor shaft, the one end of motor shaft is connected with blade assembly, further include spiral guide tower pole and impeller, transmission shaft is fixed on impeller, transmission shaft upper portion is fixedly connected with motor shaft, transmission shaft lower portion is hinged with spiral guide tower pole, spiral guide tower pole outside is equipped with wind-assisted cylinder, magnetic suspension generator is embedded for adjusting the magnetic fluid regulation and control module of rotor speed. The utility model detects rotor speed by magnetic fluid regulation and control module, by changing the viscosity of iron-based nanometer magnetic fluid of magnetic field intensity, form flexible damping force, reduce the impact load and abrasion brought by braking, improve device reliability, ground effect temperature difference collaborative natural wind drive magnetic suspension generator, improve natural energy utilization rate and wind power generation stability.

The utility model relates to polyester resin production equipment especially relates to a kind of polyester resin circulating water system;Including: cooling pond and the cooling water tower group being located at the top of the cooling pond;Wherein, the water outlet of cooling pond is connected with the water inlet pipeline of production area;The water outlet of production area is connected with the water inlet pipeline of cooling water tower group;Cooling water tower group includes: first unpowered cooling water tower, second unpowered cooling water tower and mechanical cooling water tower;The water in the cooling pond of the utility model is pressurized by cooling water circulating pump and is supplied to the heat exchanger of production area after heat exchange, and then flows into cooling pond after cooling by cooling water tower group, and the full use of water resources is realized by circulation;The cooling water tower group of the utility model uses unpowered cooling water tower and mechanical cooling water tower mixed configuration, with unpowered cooling water tower as main force to meet full load and conventional condition, with mechanical cooling water tower as auxiliary to supplement under extreme condition, maximize the use of natural energy saving.

This utility model relates to an energy storage-type hot and cold air system based on air compressor modification, belonging to the technical field of heating and cooling equipment. It includes an air compressor assembly, a pressurized air storage device, a constant pressure air storage device, a vortex tube unit, a cold air blower, and a hot air blower. The compressed air outlet on the air compressor assembly is connected to the pressurized air storage device, which is connected to the constant pressure air storage device, which is connected to the vortex tube unit. One end of the vortex tube unit is connected to a cold air collection duct, and the other end is connected to a hot air collection duct. The air compressor assembly is equipped with an insulated enclosure, on which a fresh air blower is installed. This utility model possesses energy storage characteristics, solving the problem of wind and solar power curtailment due to unstable natural energy sources. It utilizes off-peak electricity to obtain inexpensive energy and can be widely used in drying industries, building HVAC, building energy, and hot and cold air supply centers, achieving good results in energy saving, cost reduction, and emission reduction.

This application relates to the field of development and application technology of metal hydrogen storage materials, and provides a system for producing liquid hydrogen and liquid oxygen using metal hydrogen storage materials, including a hydrogen absorption / desorption cycle unit, a helium circulation unit, and a liquid hydrogen / liquid oxygen preparation unit. The system for producing liquid hydrogen and liquid oxygen using metal hydrogen storage materials provided in this application utilizes the low temperature generated during the hydrogen absorption / desorption cycle of the metal hydrogen storage material to achieve air separation and hydrogen liquefaction. It fully utilizes natural energy, including solar energy, and the chemical energy of hydrogen absorption / desorption by the metal hydrogen storage material. It effectively utilizes the heat generated by hydrogen absorption and the cold energy generated by hydrogen desorption, achieving efficient utilization of hydrogen energy.

The application discloses a pipe string structure and a control method for self-flow gas injection from a high-pressure layer to a low-pressure layer, and improves technical problems such as high well completion operation cost and great process difficulty. The pipe string structure comprises a wellbore casing, an isolation assembly, a filter assembly and a gas injection assembly. The gas injection assembly comprises: a gas injection production pipe string arranged in the wellbore casing; a production packer arranged on the gas injection production pipe string and fixedly seated with the wellbore casing, and the production packer is located above a low-pressure layer of a formation; a distribution and injection valve arranged on the gas injection production pipe string and located below the production packer, and the distribution and injection valve is located at the low-pressure layer of the formation; and a sealing part connected to the bottom of the gas injection production pipe string and sealingly connected with the isolation assembly. The application can realize self-flow of natural energy of a high-pressure layer gas group to a low-pressure layer gas group in the same well, improve the recovery rate of the low-pressure layer gas group, save cost and reduce the well completion process difficulty, and the oil well can be subjected to separate layer exploitation in the later period.

The application discloses a kind of unpowered self heat exchange structure and method, unpowered self heat exchange structure is breathable and heat-permeable anti-infiltration buried hole, the breathable and heat-permeable anti-infiltration buried hole is arranged at the bottom of underground reservoir, the breathable and heat-permeable anti-infiltration buried hole is laid breathable anti-infiltration sand, the upper surface of breathable anti-infiltration sand is contacted with water body in reservoir, the lower surface is contacted with soil under reservoir, and water body and soil exchange heat through breathable anti-infiltration sand.Unpowered self heat exchange method, water body in underground reservoir and soil under reservoir exchange heat through breathable anti-infiltration sand laid in breathable and heat-permeable anti-infiltration buried hole under reservoir.The application aims at the limitation of natural energy utilization for building heating in cold and water shortage areas such as north, and proposes a multipurpose rainwater energy pool, which combines sponge city construction and natural energy development, collects, purifies and stores rainwater and sewage, exchanges energy between stored water body and stratum soil, indirectly utilizes soil heat energy, and stores heat energy in water pool.

This invention discloses a method and device for energy modeling and energy-saving obstacle avoidance of marine robots that considers natural energy capture, belonging to the field of marine robot technology. The method first acquires the marine robot's mission information, navigation environment information, and its own motion state information; then, it constructs an energy modeling system including a speed response model, an energy consumption model, and a natural energy capture model; next, it introduces effective speed constraints under the influence of natural energy to construct a dynamic speed window; within the dynamic speed window, it samples candidate speed combinations and generates candidate trajectories by combining them with a kinematic model; it scores the predicted trajectories using a comprehensive evaluation function, selects the speed combination with the best score as the robot's motion control command for the next moment; and iteratively executes the above steps until the robot reaches the target point or the mission termination condition is met. This method improves the utilization of natural energy and enhances the endurance and autonomous navigation capabilities in complex time-varying environments while ensuring the marine robot's safe navigation and effective obstacle avoidance.