Stable wind power generation system utilizing offshore oil and gas well

Abstract

The invention discloses a stable wind power generation system utilizing an offshore oil and gas well. Comprising a plurality of wind power air compression systems arranged on one side of an ocean platform of a deep sea; the waste oil and gas field or the seabed cave is arranged below the ocean platform and is connected with the plurality of wind power air compression systems through compressed air inlet pipes; the pressure swing adsorption device is arranged on the land and is connected with the waste oil and gas field or the seabed cave through a compressed air exhaust pipe; the pressure stabilizing tank is arranged on one side of the pressure swing adsorption device and is connected with the pressure swing adsorption device through a first connecting pipeline; and the one or more power plants are connected with the surge tank through a second connecting pipeline. The device has the beneficial effects that unstable offshore wind energy of the deep sea is converted and output into stable electric energy.

Description

Technical Field

[0001] This invention relates to the field of oil and gas drilling and production equipment technology, and in particular to a stable wind power generation system utilizing offshore oil and gas wells. Background Technology

[0002] With the increasing installed capacity of offshore wind power year by year, the stability and security of the power grid are under significant threat, prompting various provinces to propose energy storage requirements for offshore wind power projects. Traditional electrochemical energy storage has a large pollution content throughout its production lifecycle and limited storage capacity. Some new energy storage technologies, such as molten salt energy storage, have low efficiency and high cost, and key technologies, such as the production technology of high-temperature valves, are controlled by foreign countries. With the accelerated development of offshore wind power, the unstable power generation mode, the safe power grid, and the low-cost energy storage method have formed an impossible triangle.

[0003] Currently, researchers are focusing on finding low-cost, high-cycle-count, and large-capacity energy storage methods to solve the problem of unstable power supply from offshore wind power, such as using flow batteries. However, as offshore wind power moves into deeper waters, even with energy storage, the excessively long submarine cables keep the cost of deep-sea offshore wind power high. Using energy islands to produce hydrogen through water electrolysis is limited by hydrogen storage and transportation issues, and this method is also too inefficient.

[0004] This invention proposes a stable wind power generation system utilizing offshore oil and gas wells. This system innovates traditional offshore wind power supply methods by utilizing abandoned natural gas or oil fields. Using compressed air as a medium, it converts offshore wind energy into stable pressure energy, which is then used to stably output electrical energy. This system breaks through the "new energy trilemma" and may become a new model for future offshore wind power generation. Summary of the Invention

[0005] The purpose of this invention is to provide a stable wind power generation system that utilizes offshore oil and gas wells to convert unstable offshore wind energy into stable electrical energy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution, including: Multiple wind-powered air compression systems are installed on one side of an offshore platform in the deep sea; the wind-powered air compression systems are used to convert wind energy into compressed air; Abandoned oil and gas fields or seabed caves are located below an offshore platform and connected to multiple wind-powered air compression systems via compressed air intake pipes. These abandoned oil and gas fields or seabed caves are used to store compressed air. A pressure swing adsorption device is installed on land and connected to the abandoned oil and gas field or seabed cave through a compressed air exhaust pipe. It is used to adsorb impurity gases in the compressed air from the abandoned oil and gas field or seabed cave. A pressure stabilizing tank is located on one side of the pressure swing adsorption device and is connected to the pressure swing adsorption device through a first connecting pipe, used to stabilize the flow rate. One or more power plants are connected to the pressure stabilizing tank via a second connecting pipeline for generating electricity by using pressure difference to drive blade rotation.

[0007] Preferably, the compressed air intake pipe includes: Multiple compressed air intake branch pipes, each connected to a different wind-powered air compression system at its front end; A main compressed air intake pipe is connected at its front end to the ends of the plurality of compressed air intake branch pipes; the end of the main compressed air intake pipe is connected to the abandoned oil and gas field or the seabed cave.

[0008] Preferably, a one-way valve is provided between the front end of the multiple compressed air intake branch pipes and the multiple wind-powered air compression systems; a one-way valve is provided between the rear end of the multiple compressed air intake branch pipes and the front end of the compressed air intake main pipe; and a one-way valve is provided between the rear end of the compressed air intake main pipe and the abandoned oil and gas field or seabed cave.

[0009] Preferably, a pressure sensor is provided inside the pressure stabilizing tank; a first electronic control valve and a first flow controller are provided on the first connecting pipeline, and the first electronic control valve and the first flow controller are electrically connected to the pressure sensor respectively.

[0010] Preferably, a second electronically controlled valve and a second flow controller are provided on the second connecting pipeline.

[0011] Preferably, the engine of the power plant is a differential pressure generator set or an expander.

[0012] Preferably, the wind-powered air compression system consists of a fan and an air compressor, wherein the fan generates electrical energy, which drives the air compressor to compress air.

[0013] Preferably, the wind-powered air compression system is a wind compressor that converts wind power into compressed air; the wind compressor is a vertical wind compressor.

[0014] Preferably, the pressure stabilizing tank is a concrete tank or a steel tank.

[0015] The beneficial effect of this invention is that it converts unstable wind energy in deep-sea areas into stable electrical energy. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a stable wind power generation system utilizing offshore oil and gas wells according to the present invention. Detailed Implementation

[0017] The invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0018] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0019] like Figure 1 As shown, a stable wind power generation system utilizing offshore oil and gas wells according to the present invention includes: Multiple wind-powered air compression systems 110 are installed on one side of an offshore platform 210 in the deep sea 2. The wind-powered air compression system 110 is used to convert wind energy into compressed air. Preferably, the wind-powered air compression system 110 consists of a fan and an air compressor. The fan generates electrical energy, which drives the air compressor to compress air. More preferably, the wind-powered air compression system 110 is a wind compressor that converts wind power into compressed air. The wind compressor is a vertical wind compressor.

[0020] An abandoned oil and gas field or subsea cave 130 is located below the offshore platform 210 and connected to multiple wind-powered air compression systems 110 via a compressed air intake pipe. The abandoned oil and gas field or subsea cave 130 is used to store compressed air. Preferably, the compressed air intake pipe includes: multiple compressed air intake branch pipes 121, each connected at its front end to one of the multiple wind-powered air compression systems 110; a compressed air intake main pipe 122, the front end of which is connected to the ends of the multiple compressed air intake branch pipes 121; and the end of the compressed air intake main pipe 122 is connected to the abandoned oil and gas field or subsea cave 130. More preferably, a one-way valve is provided between the front ends of the multiple compressed air intake branch pipes 121 and the multiple wind-powered air compression systems 110; a one-way valve is provided between the rear ends of the multiple compressed air intake branch pipes 121 and the front end of the compressed air intake main pipe 122; and a one-way valve is provided between the rear end of the compressed air intake main pipe 122 and the abandoned oil and gas field or subsea cave 130.

[0021] A pressure swing adsorption device 150 is installed on land 3 and connected to the abandoned oil and gas field or seabed cave 130 via a compressed air exhaust pipe 140. It is used to adsorb impurity gases from the compressed air from the abandoned oil and gas field or seabed cave 130.

[0022] A pressure stabilizing tank 160 is disposed on one side of the pressure swing adsorption device 150 and connected to the device 150 via a first connecting pipe for stabilizing flow rate. Preferably, a pressure sensor is provided inside the pressure stabilizing tank 160. A first electronic control valve and a first flow controller are provided on the first connecting pipe, and the first electronic control valve and the first flow controller are electrically connected to the pressure sensor, respectively. More preferably, the pressure stabilizing tank 160 is a concrete tank or a steel tank.

[0023] One or more power plants 170, connected to the pressure stabilizing tank via a second connecting pipeline, are used to generate electricity by driving blades to rotate using a pressure difference. Preferably, a second electronically controlled valve and a second flow controller are provided on the second connecting pipeline. More preferably, the engine of the power plant is a differential pressure generator set or an expander.

[0024] During operation, the wind-powered air compression system 110 converts wind energy into electrical energy, which is then used to compress air. The compressed air is delivered to multiple compressed air intake branch pipes 121, and then merges into the compressed air intake main pipe 122. The heat generated during this process can be cooled by seawater. The compressed air from the compressed air intake main pipe 122 is then stored in abandoned oil and gas fields or seabed caves 130. When power generation is needed or the power grid requires peak shaving (valley filling), the electronic control valves and flow controllers between the pressure stabilizing tank 160 and the pressure swing adsorption device 150, as well as the electronic control valves and the first flow controller between the air pressure differential power plant and the pressure stabilizing tank, are opened. The pressure sensor regulates the electronic control valves and the first flow controller to maintain a constant pressure in the pressure stabilizing tank, enabling the power plant 170 to generate electricity stably. During this process, the pressure swing adsorption device 150 adsorbs impurities in the compressed air.

[0025] In another embodiment, the compressed air intake pipe includes: multiple compressed air intake branch pipes 121, the front ends of which are respectively connected to multiple wind-powered air compression systems 110; a compressed air intake main pipe 122, the front end of which is connected to the end of the multiple compressed air intake branch pipes 121; and the end of the compressed air intake main pipe 122 is connected to the abandoned oil and gas field or the seabed cave 130.

[0026] In another embodiment, a one-way valve is provided between the front end of the plurality of compressed air intake branch pipes 121 and the plurality of wind-powered air compression systems 110; a one-way valve is provided between the rear end of the plurality of compressed air intake branch pipes 121 and the front end of the compressed air intake main pipe 122; and a one-way valve is provided between the rear end of the compressed air intake main pipe 122 and the abandoned oil and gas field or seabed cave 130.

[0027] In another embodiment, a pressure sensor is provided inside the pressure stabilizing tank 160; a first electronic control valve and a first flow controller are provided on the first connecting pipeline, and the first electronic control valve and the first flow controller are electrically connected to the pressure sensor respectively.

[0028] In another embodiment, a second electronically controlled valve and a second flow controller are provided on the second connecting pipeline.

[0029] In another embodiment, the engine of the power plant is a differential pressure generator or an expander.

[0030] In another embodiment, the wind-powered air compression system 110 consists of a fan and an air compressor, wherein the fan generates electrical energy to drive the air compressor to compress air.

[0031] In another embodiment, the wind-powered air compression system 110 is a wind compressor that converts wind power into compressed air; the wind compressor is a vertical wind compressor.

[0032] In another embodiment, the pressure stabilizing tank 160 is a concrete tank or a steel tank.

[0033] In summary, the present invention provides a stable wind power generation system 1 utilizing offshore oil and gas wells, which converts unstable offshore wind energy in deep waters into stable electrical energy.

[0034] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A stable wind power generation system utilizing offshore oil and gas wells, characterized in that, include: Multiple wind-powered air compression systems are installed on one side of an offshore platform in the deep sea; the wind-powered air compression systems are used to convert wind energy into compressed air; Abandoned oil and gas fields or seabed caves are located below an offshore platform and connected to multiple wind-powered air compression systems via compressed air intake pipes. These abandoned oil and gas fields or seabed caves are used to store compressed air. A pressure swing adsorption device is installed on land and connected to the abandoned oil and gas field or seabed cave through a compressed air exhaust pipe. It is used to adsorb impurity gases in the compressed air from the abandoned oil and gas field or seabed cave. A pressure stabilizing tank is located on one side of the pressure swing adsorption device and is connected to the pressure swing adsorption device through a first connecting pipe, used to stabilize the flow rate. One or more power plants are connected to the pressure stabilizing tank via a second connecting pipeline for generating electricity by using pressure difference to drive blade rotation.

2. The stable wind power generation system utilizing offshore oil and gas wells according to claim 1, characterized in that, The compressed air intake pipe includes: Multiple compressed air intake branch pipes, each connected to a different wind-powered air compression system at its front end; A main compressed air intake pipe is connected at its front end to the ends of the plurality of compressed air intake branch pipes; the end of the main compressed air intake pipe is connected to the abandoned oil and gas field or the seabed cave.

3. The stable wind power generation system utilizing offshore oil and gas wells according to claim 2, characterized in that: A one-way valve is provided between the front end of the multiple compressed air intake branch pipes and the multiple wind-powered air compression systems; a one-way valve is provided between the rear end of the multiple compressed air intake branch pipes and the front end of the compressed air intake main pipe; a one-way valve is provided between the rear end of the compressed air intake main pipe and the abandoned oil and gas field or seabed cave.

4. The stable wind power generation system utilizing offshore oil and gas wells according to claim 1, characterized in that: A pressure sensor is installed inside the pressure stabilizing tank; a first electronic control valve and a first flow controller are installed on the first connecting pipeline, and the first electronic control valve and the first flow controller are electrically connected to the pressure sensor respectively.

5. The stable wind power generation system utilizing offshore oil and gas wells according to claim 1, characterized in that: A second electronically controlled valve and a second flow controller are provided on the second connecting pipeline.

6. The stable wind power generation system utilizing offshore oil and gas wells according to claim 1, characterized in that: The power plant's engine is a differential pressure generator set or an expander.

7. The stable wind power generation system utilizing offshore oil and gas wells according to claim 1, characterized in that: The wind-powered air compression system consists of a fan and an air compressor. The fan generates electrical energy, which drives the air compressor to compress air.

8. The stable wind power generation system utilizing offshore oil and gas wells according to claim 1, characterized in that: The wind-powered air compression system is a wind compressor that converts wind power into compressed air; the wind compressor is a vertical wind compressor.

9. The stable wind power generation system utilizing offshore oil and gas wells according to claim 1, characterized in that: The pressure stabilizing tank is a concrete tank or a steel tank.

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