Oil-gas mixed transportation device and method for submarine oil well transportation

Abstract

The invention relates to the technical field of seabed oil-gas mixed transportation, and discloses an oil-gas mixed transportation device and method for seabed oil well transportation, the oil-gas mixed transportation device comprises a fixing frame, a mixed transportation mechanism is arranged on the upper part of the fixing frame, a fixing mechanism is arranged, the device can be fixedly connected to the seabed surface, double fixation can be realized, the fixation is relatively firm, and the reliability is high. The device is isolated from seawater to prevent damage caused by seawater erosion; a mixed conveying mechanism is arranged, a liquid phase at the bottom of a buffer tank is pumped into an inlet of a jet pump through a booster pump, low pressure is formed at an outlet of a nozzle, and therefore an oil-gas mixture collected by an oil well is sucked into the buffer tank, due to the oil-gas density difference, layering can be formed in the buffer tank, and the liquid phase gradually deposits to the bottom; the gas phase (or the gas-liquid dispersion phase) can be collected to the upper part of the buffer tank and enters the oil-gas mixed transportation pipeline after being pressurized, so that long-distance mixed transportation is realized, automatic liquid supplement can be realized, and the transportation efficiency is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of submarine oil and gas mixed transportation, and specifically relates to an oil and gas mixed transportation device and method for submarine oil well transportation. Background Art

[0002] After the crude oil is extracted from the wellhead, the three-phase fluid of oil, gas and water is directly transported to the shore through the submarine pipeline. The oil, gas and water are separated on land and stored, transported and sold after meeting the quality standards.

[0003] At present, when the submarine oil and gas are mixed, they are generally transported by connecting the transmission pipeline directly to the submarine oil wellhead. However, the transportation efficiency is low. The pressure at the oil wellhead is insufficient, which makes the pressure entering the pipeline insufficient, resulting in low transportation efficiency. In addition, due to long-term seawater erosion, it is easy to cause damage to the connection between the oil wellhead and the pipeline, resulting in transportation failure and leakage and waste of oil and gas. Oil and gas gathering and transportation is one of the key links in the development process of oil and natural gas. Submarine oil and gas multiphase mixed transportation technology is also a key technology in the oil and gas gathering and transportation area, which helps to simplify the oil and gas gathering and transportation process and improve the overall system efficiency. For submarine oil wells, when the conditions for separate transportation of submarine oil and gas are not available, oil and gas mixed transportation technology will play its advantages. However, conventional oil and gas mixed transportation devices, such as oil and gas mixed transportation pumps, are expensive and have high maintenance costs, which do not meet the needs of low-cost development. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an oil and gas mixed transportation device and method for submarine oil well transportation, which effectively solves the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil and gas mixed transportation device for submarine oil well transportation, comprising a fixed frame, a mixed transportation mechanism is provided on the upper part of the fixed frame, a fixing mechanism is provided on the bottom wall of the fixed frame, the fixing mechanism comprises fixed gear cavities processed at the four corners of the fixed frame, connecting channels are provided between the fixed gear cavities, a fixed screw is rotatably connected between the end walls of the fixed gear cavities, a fixed gear is fixedly connected to the outer surface of the fixed screw, the fixed gear is meshed with a fixed annular rack, the fixed annular rack is meshed and tightened by four fixed gears, the fixed screw extends outside the fixed gear cavity, and is threadedly connected to a fixed threaded pipe, a plurality of limiting rods are connected between the fixed threaded pipe and the fixed frame, The lower end of the fixed threaded tube is rotatably connected to a fixed drill bit, the lower end of the fixed screw is fixedly connected to a telescopic shaft, the lower end of the telescopic shaft is fixedly connected to the fixed drill bit, the outer surface of the fixed threaded tube is evenly fixedly connected to a fixed disk, an auxiliary fixed cavity is provided in a circumferential array on the fixed disk, an electric telescopic rotating shaft is rotatably connected to the end wall of the auxiliary fixed cavity, an auxiliary fixed drill bit is fixedly connected to the outer surface of the electric telescopic rotating shaft, the fixed frame is provided with a gear cavity, a gear shaft is rotatably connected between the end walls of the gear cavity, the gear shaft is dynamically connected to a fixed motor, the fixed motor is fixedly installed in the fixed frame, a driving gear is fixedly installed on the outer surface of the gear shaft, and the driving gear is meshed with the fixed annular rack.

[0006] Preferably, the mixed delivery mechanism includes an installation box fixedly connected to the upper surface of the fixing frame, a buffer tank is fixedly installed on the upper surface of the fixing frame in the installation box, a water storage tank is fixedly connected to the upper surface of the fixing frame, a liquid replenishment pump is fixedly connected to the upper surface of the fixing frame between the water storage tank and the buffer tank, a liquid replenishment pipeline is connected between the liquid replenishment pump and the buffer tank and the water storage tank, a fixing plate is fixedly connected to the inner surface of the installation box, a jet pump is fixedly installed on the fixing plate, one input end of the jet pump is fixedly connected to the output end of the input pipe, the input end of the input pipe is fixedly connected to one end of the boosting pipe, and the other end of the boosting pipe is fixedly connected to the boosting pump The boost pump is fixedly installed on the upper surface of the fixed frame, the boost pump is connected to the buffer tank through a liquid supply pipe, the output end of the jet pump is connected to the inlet and outlet ends of the throat pipe, the output end of the throat pipe is connected to the input end of the diffusion pipe, the output end of the diffusion pipe is connected to a pipeline, the end of the pipeline away from the diffusion pipe is connected to the buffer tank, the other input end of the jet pump is connected to an oil and gas delivery pipe, the end of the oil and gas delivery pipe away from the jet pump is connected to a connecting pipe head, the connecting pipe head is fixedly installed on the bottom of the fixed frame, the connecting pipe head is connected to the oil wellhead pipeline, the upper part of the buffer tank is fixedly connected to a mixed delivery pipe, and the mixed delivery pipe runs through the installation box.

[0007] Preferably, the water tank is provided with an automatic liquid replenishing mechanism, and the automatic liquid replenishing mechanism includes a fixed box fixedly connected to the upper part of the water tank, a stop air supply cavity is provided in the fixed box, a stop push plate is slidably connected between the end walls of the stop air supply cavity, a stop push rod is fixedly connected to the bottom wall of the stop push plate, the stop push rod extends into the water tank, the stop push rod is slidably connected to the water tank, a stop reset spring is clamped between the stop push plate and the upper surface of the stop air supply cavity, an air supply pipe is fixedly connected to the upper end wall of the stop air supply cavity, the end of the air supply pipe away from the stop air supply cavity is fixedly connected to the stop air pressure rod, and the stop The pneumatic rod is in contact with the water pump, and the water pump is fixedly installed in the fixed frame. A water pumping port is fixedly connected to the end wall of the water pump, a slide is slidably connected between the end walls of the water storage tank, a starting push rod is slidably connected through the bottom wall of the water storage tank, the starting push rod extends into the starting air supply cavity, the starting air supply cavity is arranged in the fixed frame, a starting push plate is fixedly connected to the lower end of the starting push rod, a starting return spring is clamped between the starting push plate and the bottom wall of the starting air supply cavity, a starting pneumatic rod is fixedly connected to the end wall of the starting air supply cavity, the starting pneumatic rod is in contact with the water pump, and a water inlet pipe is connected between the water pump and the water storage tank.

[0008] Preferably, a protective mechanism is provided on the bottom wall of the fixed frame, and the protective mechanism includes a protective tube rotatably connected to the bottom wall of the fixed frame, a protective cone is fixedly connected to the bottom wall of the protective tube in a circumferential array, a protective annular rack is fixedly connected to the outer surface of the protective tube, the protective annular rack is meshed with a protective gear, the protective gear is fixedly mounted on the outer surface of the protective gear shaft, the protective gear shaft is rotatably mounted between the end walls of the gear cavity, and the protective gear is meshed with the driving gear.

[0009] Preferably, a power generation mechanism is provided on the fixed frame, and the power generation mechanism includes a protective shell rotatably connected to the fixed frame outside the mounting box, a rotating plate is fixedly installed in a circular array on the spherical outer surface of the protective shell, an annular rack is fixedly installed on the outer surface of the lower end of the protective shell, a plurality of power generation gear cavities are machined in the fixed frame, a power generation gear shaft is rotatably connected between the end walls of the power generation gear cavity, a power generation gear is fixedly installed on the outer surface of the power generation gear shaft, the power generation gear is meshed with the annular rack, the power generation gear shaft is dynamically connected to the generator, and the generator is fixedly installed in the fixed frame.

[0010] Preferably, an anti-collision mechanism is provided on the outer surface of the protective shell, and the anti-collision mechanism includes an anti-collision sliding rod evenly slidably connected to the outer surface of the protective shell, and an anti-collision plate is fixedly connected to the end of the anti-collision sliding rod away from the protective shell, and an anti-collision spring is clamped between the anti-collision plate and the protective shell.

[0011] Preferably, a drainage mechanism is provided on the end wall of the protective tube, and the drainage mechanism comprises a drainage port processed on the end wall of the protective tube, and a drainage pump is fixedly installed between the end walls of the drainage port.

[0012] Preferably, a liquid level sensor is fixedly connected to the inner surface of the buffer tank.

[0013] Preferably, a turntable is rotatably connected to the protective shell, the mixing pipe is fixedly connected to the turntable, and a connecting pipe is connected to the turntable to communicate with the mixing pipe.

[0014] The present invention provides a method for mixed oil and gas transportation for submarine oil well transportation. Based on the above-mentioned device for mixed oil and gas transportation for submarine oil well transportation, the steps include:

[0015] Step 1: Connect the connecting pipe head to the oil wellhead pipeline, and perform sealing and waterproofing treatment after connection;

[0016] Step 2: The fixing mechanism moves, thereby driving the fixed drill bit to move and drill into the rock on the seabed, thereby fixing the fixing frame at the seabed position, and the fixing depth can be adjusted to achieve fixing at different depths, and the auxiliary fixed drill bit can be used to drill into the rock for double-layer fixation, which is relatively firm.

[0017] Step 3: When the fixing mechanism moves, it drives the protection mechanism to move, thereby driving the protection cone to rotate and enter the rock, thereby driving the protection tube to move and enter the rock, protecting and isolating the oil wellhead pipeline connection, and wrapping and isolating the connection;

[0018] Step 4: After the isolation package is wrapped, the drainage mechanism moves to discharge the water in the protective tube to prevent the residual moisture in the protective tube from damaging the connection;

[0019] Step 5: The mixing mechanism moves to realize the transportation of oil, and the automatic liquid replenishing mechanism can be used to replenish the oil to ensure the efficiency of transportation;

[0020] Step six: The movement of water flow drives the power generation mechanism to move, thereby generating electricity, and can achieve anti-collision protection through the anti-collision mechanism to prevent damage caused by collision.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention provides an oil and gas mixed transportation device for submarine oil well transportation, which is provided with a fixing mechanism, and can realize the fixed connection of the device to the seabed surface, and can realize double fixation, the fixation is relatively firm, and can realize the use of a protective mechanism to protect the oil well mouth connection, isolate it from seawater, and prevent damage caused by erosion by seawater.

[0023] 2. The present invention provides an oil and gas mixed transportation device for submarine oil well transportation, which is provided with a mixing mechanism. The liquid phase at the bottom of the buffer tank is pumped into the inlet of the jet pump by a booster pump, and a low pressure is formed at the nozzle outlet, thereby sucking the oil and gas mixture collected from the oil well into the buffer tank. Due to the difference in oil and gas density, stratification will be formed in the buffer tank, and the liquid phase will gradually settle to the bottom, and the gas phase (or gas-liquid dispersed phase) will gather at the upper part of the buffer tank, and enter the oil and gas mixed transportation pipeline after being pressurized, so as to realize long-distance mixed transportation, and can realize automatic liquid replenishment to ensure transportation efficiency.

[0024] 3. The oil and gas mixed transportation device for submarine oil well transportation provided by the present invention is provided with an anti-collision mechanism, which can realize anti-collision protection for the device and prevent damage caused by collision on the seabed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0026] In the attached picture:

[0027] Figure 1 This is a schematic diagram of the first direction structure of an oil and gas mixed transmission device for submarine oil well transmission in the present invention.

[0028] Figure 2 It is a schematic diagram of the structure in the second direction of an oil and gas mixed transmission device for submarine oil well transmission in the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a third direction of an oil and gas mixed transmission device for submarine oil well transmission in the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of a mixed oil and gas transportation device for submarine oil well transportation in the fourth direction of the present invention;

[0031] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;

[0032] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at the middle BB;

[0033] Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure at CC in the middle;

[0034] Figure 8 for Figure 5 Schematic diagram of the cross-sectional structure at DD in the middle;

[0035] Fig. 9 for Figure 5 Schematic diagram of the cross-sectional structure at FF in the middle;

[0036] Fig.10 for Fig. 9 Schematic diagram of the cross-sectional structure at GG in the middle;

[0037] Fig.11 for Fig. 9 Schematic diagram of the cross-sectional structure at HH in the middle;

[0038] Fig.12 for Figure 7 Schematic diagram of the cross-sectional structure at II in the middle;

[0039] Fig.13 for Figure 7 Schematic diagram of the cross-sectional structure at JJ in the middle.

[0040] In the figure: 1-fixed frame, 2-fixed threaded pipe, 3-fixed plate, 4-auxiliary fixed drill bit, 5-fixed drill bit, 6-anti-collision plate, 7-anti-collision spring, 8-rotating plate, 9-protective shell, 10-connecting pipe, 11-turntable, 12-water pumping port, 13-protective cylinder, 14-protective cone, 15-drainage pump, 16-drainage port, 17-connecting pipe head, 18-mixing pipe, 19-installation box, 20-buffer tank, 21-pipeline, 22-diffuser, 23-throat, 24-jet pump, 25-fixed plate, 26-input pipe, 27-boosting pipe, 28-oil and gas transmission pipe, 29-protective annular rack, 30-gear cavity, 31-protective gear shaft, 32-protective gear, 33-fixed motor, 34-gear shaft, 35-driving gear, 36-fixed annular rack, 37-annular rack, 3 8-water storage tank, 39-anti-collision slide rod, 40-slide plate, 41-fixed box, 42-stop push plate, 43-stop air supply cavity, 44-stop reset spring, 45-air pipe, 46-stop push rod, 47-liquid level sensor, 48-liquid replenishment pump, 49-liquid replenishment pipeline, 50-boosting pump, 51-liquid supply pipe, 52-generating gear cavity, 53-generating gear, 54-generating gear shaft, 55-starting push rod, 56-starting air supply cavity, 57-starting push plate, 58-starting reset spring, 59-starting pneumatic rod, 60-water pump, 61-generator, 62-fixed screw, 63-telescopic shaft, 64-auxiliary fixed cavity, 65-electric telescopic rotating shaft, 66-limiting rod, 67-stop pneumatic rod, 68-fixed gear cavity, 69-fixed gear, 71-connecting channel, 72-water inlet pipe. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] like Figure 1-13As shown, the present invention provides an oil and gas mixed transportation device for submarine oil well transportation, the components in the device are made of pressure-resistant and corrosion-resistant materials, including a fixed frame 1, the fixed frame 1 is supported by metal materials, a mixing mechanism is provided on the upper part of the fixed frame 1, the mixing mechanism is used to mix the oil on the seabed, a fixing mechanism is provided on the bottom wall of the fixed frame 1, the fixing mechanism is used to fix the fixed frame 1 on the seabed to prevent movement and affect transportation, the fixing mechanism includes fixed gear cavities 68 processed at the four corners of the fixed frame 1, a connecting channel 71 is provided between the fixed gear cavities 68, a fixed screw 62 is rotatably connected between the end walls of the fixed gear cavity 68, the fixed screw 62 is made of metal material, the The outer surface of the fixed screw 62 is provided with anti-wear material, and the outer surface of the fixed screw 62 is fixedly connected with a fixed gear 69, and the fixed gear 69 is made of metal material, and the outer surface of the fixed gear 69 is provided with anti-wear material, and the fixed gear 69 is meshed with the fixed annular rack 36, and the fixed annular rack 36 is made of flexible metal material, and the outer surface of the fixed annular rack 36 is provided with anti-wear material, and the fixed annular rack 36 is meshed and tightened by four fixed gears 69, and the fixed screw 62 extends outside the fixed gear cavity 68 and is threadedly connected with the fixed threaded tube 2, and the fixed threaded tube 2 is made of metal material, and the surface of the fixed threaded tube 2 is provided with anti-wear material, and the fixed threaded tube 2 is meshed with A plurality of limiting rods 66 are connected between the fixing frames 1, and the limiting rods 66 are made of metal material. The limiting rods 66 are used to limit the rotation of the fixed threaded tube 2. The lower end of the fixed threaded tube 2 is rotatably connected with a fixed drill bit 5, and the fixed drill bit 5 is made of metal material. The outer surface of the fixed drill bit 5 is provided with anti-wear material. The lower end of the fixed screw 62 is fixedly connected with a telescopic shaft 63, and the telescopic shaft 63 is made of metal material. The telescopic shaft 63 can be telescoped. The telescopic shaft 63 is used to drive the fixed drill bit 5 to rotate. The lower end of the telescopic shaft 63 is fixedly connected to the fixed drill bit 5. The outer surface of the fixed threaded tube 2 is evenly fixedly connected with a fixed disk 3, and the fixed disk 3 is made of metal. The fixing plate 3 is made of metal material, the outer surface of the fixing plate 3 is provided with anti-wear material, the radius of the fixing plate 3 is smaller than the radius of the fixing drill bit 5, the fixing plate 3 is provided with an auxiliary fixing cavity 64 in a circumferential array, the end wall of the auxiliary fixing cavity 64 is rotatably connected with an electric telescopic shaft 65, the electric telescopic shaft 65 is made of metal material, the outer surface of the electric telescopic shaft 65 is fixedly connected with an auxiliary fixing drill bit 4, the auxiliary fixing drill bit 4 is made of metal material, the outer surface of the auxiliary fixing drill bit 4 is provided with anti-wear material, the fixing frame 1 is provided with a gear cavity 30, the end wall of the gear cavity 30 is rotatably connected with a gear shaft 34, the gear shaft 34 is made of metal material, and the outer surface of the gear shaft 34 is provided with anti-wear material,The gear shaft 34 is connected to the fixed motor 33 by power, and the fixed motor 33 is fixedly installed in the fixed frame 1. A driving gear 35 is fixedly installed on the outer surface of the gear shaft 34. The driving gear 35 is made of metal material, and the outer surface of the driving gear 35 is provided with anti-wear material. The driving gear 35 is meshed with the fixed annular rack 36;

[0043] The fixed motor 33 is started, thereby driving the gear shaft 34 to rotate, thereby driving the driving gear 35 to rotate, the driving gear 35 is meshed with the fixed annular rack 36, thereby driving the fixed annular rack 36 to move, the fixed annular rack 36 is meshed with the fixed gear 69, thereby driving the fixed screw 62 to rotate, the fixed screw 62 is threadedly connected to the fixed threaded tube 2, thereby driving the fixed threaded tube 2 to move downward, thereby driving the fixed drill bit 5 to move downward, the fixed screw 62 rotates, thereby driving the telescopic shaft 63 to rotate and extend, thereby driving the fixed drill bit 5 to rotate and move downward into the seabed, thereby driving the fixed disk 3 to enter the borehole, when the fixed disk 3 enters the borehole, the electric telescopic shaft 65 starts to rotate, the electric telescopic shaft 65 rotates and extends, thereby driving the auxiliary fixed drill bit 4 to rotate and move, so that the auxiliary fixed drill bit 4 drills into the borehole wall, thereby realizing secondary fixation, thereby realizing the fixing of the fixed frame 1.

[0044] Advantageously, the mixed transport mechanism includes an installation box 19 fixedly connected to the upper surface of the fixing frame 1, the installation box 19 is made of metal material, a buffer tank 20 is fixedly installed on the upper surface of the fixing frame 1 in the installation box 19, the lower part of the buffer tank 20 is filled with liquid, and the upper part is a gas-liquid separation layer, the upper surface of the fixing frame 1 is fixedly connected to a water storage tank 38, the water storage tank 38 is made of metal material, the water storage tank 38 is filled with liquid, and the upper surface of the fixing frame 1 between the water storage tank 38 and the buffer tank 20 is fixedly connected There is a liquid replenishing pump 48, which is used to replenish liquid in the buffer tank 20. A liquid replenishing pipe 49 is connected between the liquid replenishing pump 48, the buffer tank 20 and the water storage tank 38. The liquid replenishing pipe 49 is made of metal material. The inner surface of the installation box 19 is fixedly connected with a fixing plate 25, and the fixing plate 25 is made of metal material. The fixing plate 25 is used to install the jet pump 24. The jet pump 24 is fixedly installed on the fixing plate 25. One input end of the jet pump 24 is connected to the input pipe The output end of the input pipe 26 is fixedly connected, the input end of the input pipe 26 is fixedly connected to one end of the boosting pipe 27, the other end of the boosting pipe 27 is fixedly connected to the boosting pump 50, the boosting pump 50 can be a centrifugal pump or a reciprocating pump, the boosting pump 50 is fixedly installed on the upper surface of the fixed frame 1, the boosting pump 50 is connected to the buffer tank 20 through a liquid supply pipe 51, the output end of the jet pump 24 is connected to the inlet and outlet ends of the throat pipe 23, the output end of the throat pipe 23 is connected to the input end of the diffuser 22, The output end of the diffuser 22 is connected to a pipeline 21, and the end of the pipeline 21 away from the diffuser 22 is connected to the buffer tank 20. The other input end of the jet pump 24 is connected to an oil and gas delivery pipe 28, and the end of the oil and gas delivery pipe 28 away from the jet pump 24 is connected to a connecting pipe head 17, and the connecting pipe head 17 is fixedly installed at the bottom of the fixed frame 1, and the connecting pipe head 17 is connected to the oil wellhead pipeline. The upper part of the buffer tank 20 is fixedly connected to a mixed delivery pipe 18, and the mixed delivery pipe 18 passes through the installation box 19;

[0045] Thus, the liquid in the water storage tank 38 is pumped into the buffer tank 20 through the liquid replenishment pump 48, and the liquid in the buffer tank 20 enters the booster pump 50 through the liquid supply pipe 51, and after being pressurized by the booster pump 50, enters the input pipe 26 through the booster pipe 27, and enters the jet pump 24 through the input pipe 26. The oil and gas mixture in the oil well passes through the connecting pipe head 17 and the oil and gas transmission pipe 28 to enter the jet pump 24, passes through the throat 23 and the diffuser 22, flows through the pipe 21 and enters the upper part of the buffer tank 20, and the oil and gas mixture is discharged through the mixing pipe 18, so that the oil and gas mixture entering the pipe 21 has a pressure greater than that of the oil and gas mixture when entering the oil and gas transmission pipe 28 after being pressurized, which is convenient for mixed transmission and output.

[0046] Advantageously, the water tank 38 is provided with an automatic liquid replenishing mechanism, which is used to automatically replenish liquid in the water tank 38 to facilitate better mixing and delivery. The automatic liquid replenishing mechanism includes a fixed box 41 fixedly connected to the upper part of the water tank 38, and the fixed box 41 is made of metal material. A stop air supply cavity 43 is provided in the fixed box 41. The surface of the stop air supply cavity 43 is smooth, and the outer surface of the stop air supply cavity 43 is provided with anti-wear material. A stop push plate 42 is slidably connected between the end walls of the stop air supply cavity 43. The stop push plate 42 is made of metal material, and the outer surface of the stop push plate 42 is provided with anti-wear material. The stop push plate 42 and the end wall of the stop air supply cavity 43 are sealed. A stop push rod 46 is fixedly connected to the bottom wall of the stop push plate 42, and the stop push rod 46 is made of metal material. The outer surface of the stop push rod 46 is provided with anti-wear material. The stop push rod 46 extends into the water tank 38, and the stop push rod 46 is slidably connected to the water tank 38. A stop reset spring 44 is clamped between the stop push plate 42 and the upper surface of the stop air supply cavity 43, and the stop reset spring 44 is used to drive the stop push plate 42 to reset. An air supply pipe 45 is fixedly connected to the upper end wall of the stop air supply cavity 43, and the end of the air supply pipe 45 away from the stop air supply cavity 43 is fixedly connected to the stop air pressure rod 67, and the air supply pipe 45 is used to transport gas. The stop air pressure rod 67 contacts the water pump 60. When the stop air pressure rod 67 contacts the water pump 60, the water pump 60 stops moving and stops pumping water. The water pump 60 is fixedly installed in the fixing frame 1. The water pump 60 is used to pump water to supply water to the water storage tank 38. A water pumping port 12 is fixedly connected to the end wall of the water pump 60. Water enters through the water pumping port 12. A slide plate 40 is slidably connected between the end walls of the water storage tank 38. The slide plate 40 is made of metal material. The outer surface of the slide plate 40 is provided with anti-wear material. A starting push rod 55 is slidably connected to the bottom wall of the water storage tank 38. The starting push rod 55 is made of metal material. The outer surface of the starting push rod 55 is provided with anti-wear material. Wear material, the starting push rod 55 and the water storage tank 38 are sealed, the starting push rod 55 extends into the starting air supply cavity 56, the end wall of the starting air supply cavity 56 is smooth, the starting air supply cavity 56 is arranged in the fixing frame 1, the lower end of the starting push rod 55 is fixedly connected with a starting push plate 57, the starting push plate 57 is made of metal material, the outer surface of the starting push plate 57 is provided with anti-wear material, a starting reset spring 58 is clamped between the starting push plate 57 and the bottom wall of the starting air supply cavity 56, the starting reset spring 58 is used to drive the starting push plate 57 to reset, the end wall of the starting air supply cavity 56 is fixedly connected with a starting gas pressure rod 59, the starting gas pressure rod 59 is made of metal material,The starting gas pressure rod 59 contacts the water pump 60. When the starting gas pressure rod 59 contacts the water pump 60, the water pump 60 moves to pump water. A water inlet pipe 72 is connected between the water pump 60 and the water storage tank 38. The water inlet pipe 72 is used to supply water to the water storage tank 38.

[0047] Therefore, when the water level in the water storage tank 38 drops, the slide plate 40 moves downward and contacts the start push rod 55, thereby driving the start push plate 57 to move downward, so that the gas on the lower side of the start push plate 57 enters the start pneumatic rod 59, so that the start pneumatic rod 59 moves and contacts the water pump 60, so that the water pump 60 moves, so that the water pump 60 starts to pump water, so that water enters through the water pumping port 12, passes through the water pump 60, and passes through the water inlet pipe 72 into the water storage tank 38, so that the water level in the water storage tank 38 rises, thereby driving the slide plate 40 moves upward and loses contact with the start push rod 55, the start reset spring 58 resets the start push plate 57, and thus the start pneumatic rod 59 resets. When the slide plate 40 moves upward and contacts the stop push rod 46, it drives the stop push rod 46 to move upward, thereby driving the stop push plate 42 to move upward, thereby compressing the stop reset spring 44, thereby allowing the gas on the upper side of the stop push plate 42 to enter the stop pneumatic rod 67 through the air pipe 45, thereby driving the stop pneumatic rod 67 to move and contact the water pump 60, thereby causing the water pump 60 to stop pumping water.

[0048] Advantageously, a protective mechanism is provided on the bottom wall of the fixing frame 1, and the protective mechanism is used to protect the oil wellhead interface. The protective mechanism includes a protective cylinder 13 rotatably connected to the bottom wall of the fixing frame 1, the protective cylinder 13 is made of metal material, and the outer surface of the protective cylinder 13 is provided with anti-wear material, and a protective cone 14 is fixedly connected to the bottom wall of the protective cylinder 13 in a circumferential array, and the protective cone 14 is made of metal material, and the outer surface of the protective cone 14 is provided with anti-wear material, and the outer surface of the protective cylinder 13 is fixedly connected to a protective annular rack 29, and the protective annular rack 29 is fixedly connected to the outer surface of the protective cylinder 13. 9 is made of metal material, the outer surface of the protective annular rack 29 is provided with anti-wear material, the protective annular rack 29 is meshed with the protective gear 32, the protective gear 32 is made of metal material, the outer surface of the protective gear 32 is provided with anti-wear material, the protective gear 32 is fixedly mounted on the outer surface of the protective gear shaft 31, the protective gear shaft 31 is made of metal material, the outer surface of the protective gear shaft 31 is provided with anti-wear material, the protective gear shaft 31 is rotatably mounted between the end walls of the gear cavity 30, and the protective gear 32 is meshed with the driving gear 35;

[0049] Thereby, the gear shaft 34 rotates, thereby driving the driving gear 35 to rotate, and the driving gear 35 meshes with the protective gear 32, thereby driving the protective gear shaft 31 to rotate, and the protective gear 32 meshes with the protective annular rack 29, thereby driving the protective annular rack 29 to rotate, thereby driving the protective tube 13 to rotate, thereby driving the protective cone 14 to rotate, and the fixed frame 1 moves downward, thereby driving the protective cone 14 to rotate and move downward into the seabed, thereby wrapping the oil wellhead interface inside to prevent damage.

[0050] Advantageously, a power generation mechanism is provided on the fixed frame 1, and the power generation mechanism is used to generate electricity by utilizing the movement of the seabed water current. The power generation mechanism includes a protective shell 9 rotatably connected to the fixed frame 1 outside the mounting box 19, and the protective shell 9 is made of a metal material, and the outer surface of the protective shell 9 is provided with an anti-wear material. A rotating plate 8 is fixedly installed in a circular array at the spherical outer surface of the protective shell 9, and the rotating plate 8 is made of a metal material, and the outer surface of the rotating plate 8 is provided with an anti-wear material. An annular rack 37 is fixedly installed on the outer surface of the lower end of the protective shell 9, and the annular rack 37 is made of a metal material. The outer surface of the rack 37 is provided with anti-wear material, and a plurality of power generation gear cavities 52 are processed in the fixing frame 1. A power generation gear shaft 54 ​​is rotatably connected between the end walls of the power generation gear cavity 52. ​​The power generation gear shaft 54 ​​is made of metal material, and the outer surface of the power generation gear shaft 54 ​​is provided with anti-wear material. A power generation gear 53 is fixedly installed on the outer surface of the power generation gear shaft 54. The power generation gear 53 is meshed with the annular rack 37. The power generation gear shaft 54 ​​is connected to the generator 61 by power. The generator 61 is connected to the battery through a wire. The battery is fixedly installed in the fixing frame 1, and the generator 61 is fixedly installed in the fixing frame 1;

[0051] As a result, the water flow moves, thereby driving the rotating plate 8 to rotate, thereby driving the protective shell 9 to rotate, thereby driving the annular rack 37 to rotate, and the annular rack 37 engages with the power generation gear 53, thereby driving the power generation gear shaft 54 ​​to rotate, thereby driving the generator 61 to move and generate electricity, and the generated electrical energy is stored in the battery.

[0052] Advantageously, an anti-collision mechanism is provided on the outer surface of the protective shell 9, and the anti-collision mechanism is used to provide anti-collision protection for the protective shell 9. The anti-collision mechanism includes an anti-collision slide rod 39 that is evenly slidably connected to the outer surface of the protective shell 9. The anti-collision slide rod 39 is made of metal material, and the outer surface of the anti-collision slide rod 39 is provided with anti-wear material. The end of the anti-collision slide rod 39 away from the protective shell 9 is fixedly connected with an anti-collision plate 6, and the anti-collision plate 6 is made of metal material. The outer surface of the anti-collision plate 6 is provided with anti-wear material, and an anti-collision spring 7 is clamped between the anti-collision plate 6 and the protective shell 9;

[0053] Therefore, after the anti-collision plate 6 is hit, the anti-collision sliding rod 39 moves, so that the anti-collision spring 7 is compressed, thereby achieving anti-collision protection.

[0054] Advantageously, a drainage mechanism is provided on the end wall of the protective cylinder 13, and the drainage mechanism is used to discharge the water in the protective cylinder 13. The drainage mechanism includes a drainage port 16 processed on the end wall of the protective cylinder 13, and a drainage pump 15 is fixedly installed between the end walls of the drainage port 16;

[0055] The drainage pump 15 is thereby started, so that the water in the protective tube 13 is discharged through the drainage port 16 .

[0056] Advantageously, a liquid level sensor 47 is fixedly connected to the inner surface of the buffer tank 20, and the liquid level sensor 47 is used to monitor the liquid level in the buffer tank 20;

[0057] Therefore, when the liquid level in the buffer tank 20 monitored by the liquid level sensor 47 is too low, a signal is sent to the liquid replenishing pump 48, so that the liquid replenishing pump 48 is started.

[0058] Advantageously, a turntable 11 is rotatably connected to the protective shell 9, the turntable 11 is made of metal material, the outer surface of the turntable 11 is provided with anti-wear material, the turntable 11 and the protective shell 9 are sealed, the mixing pipe 18 is fixedly connected to the turntable 11, and the turntable 11 is connected to a connecting pipe 10 which is connected to the mixing pipe 18.

[0059] The present invention provides a method for mixed oil and gas transportation for submarine oil well transportation. Based on the above-mentioned device for mixed oil and gas transportation for submarine oil well transportation, the steps include:

[0060] Step 1: Connect the connecting pipe head 17 to the oil wellhead pipeline, and perform sealing and waterproofing treatment after the connection;

[0061] Step 2: The fixing mechanism moves, thereby driving the fixed drill bit 5 to move and drill into the rock on the seabed, so as to fix the fixing frame 1 at the seabed position, and the fixing depth can be adjusted to achieve fixing at different depths, and the auxiliary fixing drill bit 4 can be used to drill into the rock for double-layer fixing, and the fixing is relatively firm;

[0062] Step 3: When the fixing mechanism moves, it drives the protection mechanism to move, thereby driving the protection cone 14 to rotate and enter the rock, thereby driving the protection tube 13 to move and enter the rock, protecting and isolating the oil wellhead pipeline connection, and wrapping and isolating the connection;

[0063] Step 4: After the isolation package is wrapped, the drainage mechanism moves to discharge the water in the protective tube 13 to prevent the residual moisture in the protective tube 13 from damaging the connection;

[0064] Step 5: The mixing mechanism moves to realize the transportation of oil, and the automatic liquid replenishing mechanism can be used to replenish the oil to ensure the efficiency of transportation;

[0065] Step six: The movement of water flow drives the power generation mechanism to move, thereby generating electricity, and can achieve anti-collision protection through the anti-collision mechanism to prevent damage caused by collision.

[0066] The working process of the device of the present invention is to connect the connecting pipe head 17 to the oil wellhead pipeline, perform sealing and waterproofing treatment after the connection, start the fixed motor 33, thereby driving the gear shaft 34 to rotate, thereby driving the driving gear 35 to rotate, the driving gear 35 is meshed with the fixed annular rack 36, thereby driving the fixed annular rack 36 to move, the fixed annular rack 36 is meshed with the fixed gear 69, thereby driving the fixed screw 62 to rotate, the fixed screw 62 is threadedly connected to the fixed threaded pipe 2, thereby driving the fixed threaded pipe 2 to move downward, thereby driving the fixed drill bit 5 to move downward, the fixed screw 62 rotates, thereby driving the telescopic shaft 63 to rotate and extend, thereby driving the fixed drill bit 5 rotates and moves downward to enter the seabed, thereby driving the fixed plate 3 to enter the borehole. When the fixed plate 3 enters the borehole, the electric telescopic shaft 65 starts to rotate, and the electric telescopic shaft 65 rotates and extends, thereby driving the auxiliary fixed drill bit 4 to rotate, so that the auxiliary fixed drill bit 4 drills into the borehole wall, thereby achieving secondary fixation, thereby fixing the fixing frame 1, thereby driving the fixing frame 1 to move downward to close to the seabed surface, the gear shaft 34 rotates, thereby driving the driving gear 35 to rotate, the driving gear 35 meshes with the protection gear 32, thereby driving the protection gear shaft 31 to rotate, the protection gear 32 meshes with the protection annular rack 29, thereby driving the protection gear shaft 31 to rotate. The ring-shaped rack 29 rotates, thereby driving the protective tube 13 to rotate, thereby driving the protective cone 14 to rotate, and the fixed frame 1 moves downward, thereby driving the protective cone 14 to rotate and move downward into the seabed, thereby wrapping the oil wellhead interface inside to prevent damage, and starting the drainage pump 15 to discharge the water in the protective tube 13 through the drainage port 16. When the liquid level in the buffer tank 20 monitored by the liquid level sensor 47 is too low, a signal is sent to the liquid replenishment pump 48, thereby starting the liquid replenishment pump 48, and the liquid in the water storage tank 38 is pumped into the buffer tank 20 through the liquid replenishment pump 48, and the liquid in the buffer tank 20 enters the booster pump 5 through the liquid supply pipe 51. 0, after being pressurized by the booster pump 50, it enters the input pipe 26 through the booster pipe 27, and then enters the jet pump 24 through the input pipe 26. The oil-gas mixture in the oil well passes through the connecting pipe head 17 and the oil-gas delivery pipe 28 to enter the jet pump 24, passes through the throat 23 and the diffuser 22, flows through the pipe 21 and enters the upper part of the buffer tank 20, and the oil-gas mixture is discharged through the mixed delivery pipe 18, so that the oil-gas mixture entering the pipe 21 has a higher pressure after being pressurized than the oil-gas mixture when entering the oil-gas delivery pipe 28, which is convenient for mixed delivery output. When the water level in the water storage tank 38 drops, the slide plate 40 moves downward and contacts the start push rod 55.Thereby, the starting push plate 57 is driven to move downward, so that the gas on the lower side of the starting push plate 57 enters the starting gas pressure rod 59, so that the starting gas pressure rod 59 moves and contacts the water pump 60, so that the water pump 60 moves, so that the water pump 60 starts to pump water, so that water enters through the water pumping port 12, passes through the water pump 60, and enters the water storage tank 38 through the water inlet pipe 72, so that the water level in the water storage tank 38 rises, thereby driving the slide plate 40 to move upward and break away from the contact between the starting push rod 55, and the starting reset spring 58 resets the starting push plate 57, thereby resetting the starting gas pressure rod 59, and when the slide plate 40 moves upward to contact the stop push rod 46, it drives the stop push rod 46 to move upward, thereby bringing The stop push plate 42 is moved upward, thereby compressing the stop reset spring 44, so that the gas on the upper side of the stop push plate 42 enters the stop gas pressure rod 67 through the gas pipe 45, thereby driving the stop gas pressure rod 67 to move and contact the water pump 60, so that the water pump 60 stops pumping water, and the water flow moves, thereby driving the rotating plate 8 to rotate, thereby driving the protective shell 9 to rotate, thereby driving the annular rack 37 to rotate, and the annular rack 37 is engaged with the power generation gear 53, thereby driving the power generation gear shaft 54 ​​to rotate, thereby driving the generator 61 to move to generate electricity, and the generated electrical energy is stored in the battery. After the anti-collision plate 6 is hit, the anti-collision slide rod 39 moves, thereby compressing the anti-collision spring 7, thereby realizing anti-collision protection.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil and gas mixed transmission device for submarine oil well transportation, characterized in that: The invention comprises a fixed frame (1), wherein a mixing mechanism is provided on the upper part of the fixed frame (1), and a fixing mechanism is provided on the bottom wall of the fixed frame (1), wherein the fixing mechanism comprises fixed gear cavities (68) machined at four corners of the fixed frame (1), and connecting channels (71) are provided between the fixed gear cavities (68). A fixing screw (62) is rotatably connected between the end walls of the fixed gear cavity (68), and a fixing gear (69) is fixedly connected to the outer surface of the fixing screw (62), and the fixing gear (69) is meshed with a fixed annular rack (36), and the fixed annular rack (36) is meshed and tightened by four fixing gears (69). The fixing screw (62) extends outside the fixed gear cavity (68) and is threadedly connected to a fixed threaded tube (2), and a plurality of limiting rods (66) are connected between the fixed threaded tube (2) and the fixed frame (1), and a fixed drill bit (5) is rotatably connected to the lower end of the fixed threaded tube (2). The lower end of the fixed screw rod (62) is fixedly connected to a telescopic shaft (63), and the lower end of the telescopic shaft (63) is fixedly connected to the fixed drill bit (5). The outer surface of the fixed threaded tube (2) is evenly fixedly connected to a fixed disk (3). A circumferential array of auxiliary fixed cavities (64) is provided on the upper circumference of the fixed disk (3). An electric telescopic rotating shaft (65) is rotatably connected to the end wall of the auxiliary fixed cavity (64). The outer surface of the electric telescopic rotating shaft (65) is fixedly connected to an auxiliary fixed drill bit (4). The fixed frame (1) is provided with a gear cavity (30). A gear shaft (34) is rotatably connected between the end walls of the gear cavity (30). The gear shaft (34) is connected to a fixed motor (33) in a power connection. The fixed motor (33) is fixedly installed in the fixed frame (1). A driving gear (35) is fixedly installed on the outer surface of the gear shaft (34). The driving gear (35) is meshed with the fixed annular rack (36).

2. The oil-gas mixed transportation device for submarine oil well transportation according to claim 1, characterized in that: The mixed delivery mechanism comprises a mounting box (19) fixedly connected to the upper surface of the fixing frame (1); a buffer tank (20) is fixedly mounted on the upper surface of the fixing frame (1) in the mounting box (19); a water storage tank (38) is fixedly connected to the upper surface of the fixing frame (1); a liquid replenishment pump (48) is fixedly connected to the upper surface of the fixing frame (1) between the water storage tank (38) and the buffer tank (20); the liquid replenishment pump (48) is connected to the buffer tank (20) and the water storage tank ( A fluid infusion pipe (49) is connected between the two pipes, the inner surface of the installation box (19) is fixedly connected to a fixing plate (25), a jet pump (24) is fixedly mounted on the fixing plate (25), an input end of the jet pump (24) is fixedly connected to an output end of an input pipe (26), an input end of the input pipe (26) is fixedly connected to one end of a boosting pipe (27), the other end of the boosting pipe (27) is fixedly connected to a boosting pump (50), and the boosting pipe (27) is fixedly connected to the boosting pump (50). The pump (50) is fixedly mounted on the upper surface of the fixing frame (1); the booster pump (50) is connected to the buffer tank (20) via a liquid supply pipe (51); the output end of the jet pump (24) is connected to the inlet and outlet ends of the throat pipe (23); the output end of the throat pipe (23) is connected to the input end of the diffusion pipe (22); the output end of the diffusion pipe (22) is connected to a pipe (21); the end of the pipe (21) away from the diffusion pipe (22) is connected to the buffer tank ( 20), the other input end of the jet pump (24) is connected to an oil and gas delivery pipe (28), the end of the oil and gas delivery pipe (28) away from the jet pump (24) is connected to a connecting pipe head (17), the connecting pipe head (17) is fixedly installed at the bottom of the fixing frame (1), the connecting pipe head (17) is connected to the oil wellhead pipeline, the upper part of the buffer tank (20) is fixedly connected to a mixed delivery pipe (18), and the mixed delivery pipe (18) passes through the installation box (19).

3. The oil-gas mixed transmission device for submarine oil well transportation according to claim 2, characterized in that: The water storage tank (38) is provided with an automatic liquid replenishing mechanism, and the automatic liquid replenishing mechanism includes a fixed box (41) fixedly connected to the upper part of the water storage tank (38), and a stop air supply cavity (43) is provided in the fixed box (41). A stop push plate (42) is slidably connected between the end walls of the stop air supply cavity (43), and a stop push rod (46) is fixedly connected to the bottom wall of the stop push plate (42). The stop push rod (46) extends into the water storage tank (38), and the stop push rod (46) is slidably connected to the water storage tank (38). A stop reset spring (44) is clamped between the stop push plate (42) and the upper surface of the stop air supply cavity (43). An air supply pipe (45) is fixedly connected to the upper end wall of the stop air supply cavity (43), and the end of the air supply pipe (45) away from the stop air supply cavity (43) is fixedly connected to a stop air pressure rod (67), and the stop air pressure rod (67) is connected to a water pump. (60), the water pump (60) is fixedly installed in the fixing frame (1), the end wall of the water pump (60) is fixedly connected with a water pumping port (12), the end wall of the water storage tank (38) is slidably connected with a slide plate (40), the bottom wall of the water storage tank (38) is penetrated and slidably connected with a starting push rod (55), the starting push rod (55) extends into a starting air supply chamber (56), and the starting air supply chamber (56) is arranged in the fixing frame (1), A starting push plate (57) is fixedly connected to the lower end of the starting push rod (55); a starting reset spring (58) is clamped between the starting push plate (57) and the bottom wall of the starting air supply chamber (56); a starting pneumatic rod (59) is fixedly connected to the end wall of the starting air supply chamber (56); the starting pneumatic rod (59) is in contact with the water pump (60); and a water inlet pipe (72) is connected between the water pump (60) and the water storage tank (38).

4. The oil-gas mixed transportation device for submarine oil well transportation according to claim 3 is characterized in that: A protection mechanism is provided on the bottom wall of the fixing frame (1), the protection mechanism comprising a protection tube (13) rotatably connected to the bottom wall of the fixing frame (1), a protection cone (14) fixedly connected in a circumferential array on the bottom wall of the protection tube (13), a protection annular rack (29) fixedly connected to the outer surface of the protection tube (13), the protection annular rack (29) meshing with a protection gear (32), the protection gear (32) fixedly mounted on the outer surface of a protection gear shaft (31), the protection gear shaft (31) rotatably mounted between the end walls of the gear cavity (30), and the protection gear (32) meshing with the driving gear (35).

5. The oil-gas mixed transmission device for submarine oil well transmission according to claim 4, characterized in that: The fixed frame (1) is provided with a power generation mechanism, and the power generation mechanism comprises a protective shell (9) rotatably connected to the fixed frame (1) outside the installation box (19), a rotating plate (8) is fixedly installed in a circular array at the spherical outer surface of the protective shell (9), and an annular rack (37) is fixedly installed on the outer surface of the lower end of the protective shell (9). A plurality of power generation gear cavities (52) are machined in the fixed frame (1), and a power generation gear shaft (54) is rotatably connected between the end walls of the power generation gear cavity (52), and a power generation gear (53) is fixedly installed on the outer surface of the power generation gear shaft (54), and the power generation gear (53) is meshed with the annular rack (37). The power generation gear shaft (54) is dynamically connected to a generator (61), and the generator (61) is fixedly installed in the fixed frame (1).

6. The oil-gas mixed transmission device for submarine oil well transportation according to claim 5, characterized in that: The outer surface of the protective shell (9) is provided with an anti-collision mechanism, and the anti-collision mechanism comprises an anti-collision sliding rod (39) evenly slidably connected to the outer surface of the protective shell (9), and the end of the anti-collision sliding rod (39) away from the protective shell (9) is fixedly connected to an anti-collision plate (6), and an anti-collision spring (7) is clamped between the anti-collision plate (6) and the protective shell (9).

7. The oil-gas mixed transportation device for submarine oil well transportation according to claim 4, characterized in that: The end wall of the protective tube (13) is provided with a drainage mechanism, which comprises a drainage port (16) processed on the end wall of the protective tube (13), and a drainage pump (15) is fixedly installed between the end walls of the drainage port (16).

8. The oil-gas mixed transmission device for submarine oil well transportation according to claim 2, characterized in that: A liquid level sensor (47) is fixedly connected to the inner surface of the buffer tank (20).

9. The oil-gas mixed transmission device for submarine oil well transmission according to claim 6, characterized in that: A turntable (11) is rotatably connected to the protective shell (9), the mixing pipe (18) is fixedly connected to the turntable (11), and a connecting pipe (10) is connected to the turntable (11) and communicates with the mixing pipe (18).

10. A method for mixed oil and gas transportation for submarine oil well transportation, based on the device for mixed oil and gas transportation for submarine oil well transportation according to any one of claims 1 to 9, characterized in that: include: Step 1: Connect the connecting pipe head (17) to the oil wellhead pipeline, and perform sealing and waterproofing treatment after the connection; Step 2: The fixing mechanism moves, thereby driving the fixing drill bit (5) to move and drill into the rock on the seabed, thereby fixing the fixing frame (1) at the seabed position, and the fixing depth can be adjusted to achieve fixing at different depths, and the auxiliary fixing drill bit (4) can be used to drill into the rock for double-layer fixing, and the fixing is relatively firm; Step 3: When the fixing mechanism moves, it drives the protection mechanism to move, thereby driving the protection cone (14) to rotate and enter the rock, thereby driving the protection tube (13) to move and enter the rock, protecting and isolating the oil wellhead pipeline connection, and wrapping and isolating the connection; Step 4: After the isolation package is formed, the drainage mechanism moves to discharge the water in the protective tube (13) to prevent the residual water in the protective tube (13) from damaging the connection; Step 5: The mixing mechanism moves to realize the transportation of oil, and the automatic liquid replenishing mechanism can be used to replenish the oil to ensure the efficiency of transportation; Step six: The movement of water flow drives the power generation mechanism to move, thereby generating electricity, and can achieve anti-collision protection through the anti-collision mechanism to prevent damage caused by collision.

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