A self-driven offshore oil and gas water separation system

Abstract

The utility model discloses a kind of self-driven offshore oil-gas-water separation systems, it is related to oil-gas-water separation technical field.The utility model includes tank body and hydraulic cyclone separation component, the bottom of the tank body is provided with separation shell, the front side and the right side of the separation shell are provided with fiber coalescing module, the hydraulic cyclone separation component includes two shunt pipes, the opposite side of two shunt pipes is communicated with tank body.The utility model is driven cyclone driver rotation by centrifugal force using mixed liquid itself flow kinetic energy through hydraulic cyclone separation component, spiral guide vane enhances fluid rotation effect, realizes oil-water rapid separation, shunt pipe carries out secondary separation to cyclone in tank body, oil-rich flow is introduced fiber coalescing module by oil pipe, water-rich flow is introduced separation shell by water pipe, entire separation process is completely relied on fluid pressure energy self-driving, without external power input, reduce the dependence of equipment to power interface and rotating component.

Description

Technical Field

[0001] This utility model belongs to the field of oil-gas-water separation technology, and in particular relates to a self-propelled marine oil-gas-water separation system. Background Technology

[0002] During the extraction process, offshore oil platforms extract emulsion mixtures containing natural gas, crude oil, and water. These emulsion mixtures must be effectively separated. This emulsion system is stable, and under the high pressure and turbulent conditions during extraction, the oil and water phases form a large number of micron- or even nano-sized droplets. These tiny droplets can remain stably suspended for a long time due to surface tension, forming complex oil-in-water or water-in-oil emulsion systems that are difficult to separate naturally. This highly emulsified characteristic makes it difficult to achieve rapid and thorough phase separation using traditional methods such as gravity settling. This not only affects the quality of crude oil and subsequent processing but also puts enormous pressure on the platform's production water to meet discharge standards.

[0003] Due to the extremely limited space on offshore platforms, and the fact that the weight and size of the equipment directly affect the high costs of transportation, installation, and operation, there are stringent requirements for separation equipment on the platform. It must be compact, lightweight, energy-efficient, and easy to maintain.

[0004] In current offshore oil, gas and water separation operations, traditional separation equipment relies on external electricity or pump drive to maintain the operation of its internal processes such as swirling, flotation or filtration. This directly leads to the equipment having to be equipped with corresponding power interfaces, rotating parts and complex control systems, resulting in complex internal structures, bulky overall equipment and high energy consumption. At the same time, this dependence on continuous external power also makes the equipment's separation performance unstable when the flow rate fluctuates. Furthermore, the presence of moving parts and complex structures increases the equipment failure rate and maintenance frequency, failing to meet the urgent need for long-term maintenance-free operation, high operational reliability and wide flow rate adaptability in harsh marine environments.

[0005] To address these issues, we provide a self-propelled offshore oil, gas and water separation system. Utility Model Content

[0006] The purpose of this invention is to provide a self-driven offshore oil, gas and water separation system. By combining a hydrocyclone separation component and a fiber coalescing module, it solves the problem that existing offshore oil, gas and water separation systems rely on external electric power to maintain internal operation, resulting in complex overall equipment structure and high energy consumption.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a self-propelled offshore oil, gas and water separation system, comprising a tank and a hydrocyclone separation assembly. A separation shell is located at the bottom of the tank, and fiber coalescing modules are located on the front and right sides of the separation shell. The hydrocyclone separation assembly includes two diversion pipes, each connected to the tank on its opposite side. A cyclone actuator is fixedly connected to the top and bottom of the inner cavity of each diversion pipe. Spiral guide vanes are fixedly connected to the inner walls of both the diversion pipes and the tank. A baffle is fixedly connected to the bottom of the inner cavity of the tank, and a spiral drain pipe connects to the top of the baffle. The fiber coalescing module is connected to the top of the tank and the diversion pipes via an oil delivery pipe, and the bottom of the diversion pipes is connected to the separation shell via a water delivery pipe.

[0009] The present invention is further configured such that the fiber coalescing module includes a hydrophilic separation box and an oleophilic separation box, the front side of the separation shell is connected to the oleophilic separation box, the right side of the oleophilic separation box is fixedly connected to the hydrophilic separation box, the rear side of the hydrophilic separation box is connected to the oil pipeline, and the hydrophilic separation box and the oleophilic separation box are respectively equipped with a hydrophilic braided fiber layer and an oleophilic braided fiber layer. The hydrophilic braided fiber layer can separate water in the oil-rich flow, and the oleophilic braided fiber layer can separate oil in the water-rich flow.

[0010] The present invention is further configured such that a guide vane is movably connected between the two sides of the inner cavity of the separation shell, a rotating wheel is fixedly connected to the surface of the guide vane, a rotating shaft is movably connected to the left side of the inner cavity of the separation shell, a vortex vane is fixedly connected to the surface of the rotating shaft, a semi-friction wheel is fixedly connected to the right side of the surface of the rotating shaft, and a drive bar is provided on the front side of the semi-friction wheel. The vortex vane can control the rotation of the rotating shaft and the semi-friction wheel by cooperating with the water flow. The semi-friction wheel can intermittently control the drive bar to move up and down during the rotation. During the movement, the drive bar can control the rotation of the rotating wheel and the guide vane, so that the guide vane oscillates continuously, and guides the water-rich flow evenly to the surface of the oleophilic woven fiber layer, improving its distribution uniformity and increasing the separation effect.

[0011] The present invention is further configured such that a sliding rod is fixedly connected to the top of the inner cavity of the separation shell, a sliding sleeve is slidably connected to the surface of the sliding rod, and the front side of the sliding sleeve is fixedly connected to the drive bar. The sliding rod and the sliding sleeve can limit the drive bar so that it can be smoothly adjusted up and down, and prevent the drive bar from tilting or deviating during movement.

[0012] The present invention is further configured such that both sides of the guide vane are movably connected to the inner wall of the separation shell through bearings. The guide vane includes a main shaft, and a guide plate is fixedly connected to the front side of the main shaft. The bearings can increase the stability of the guide vane during the swing process. The main shaft can control the swing of the guide plate during the rotation process to achieve a uniform distribution of the water-rich flow.

[0013] The present invention is further configured such that the left side of the rotating shaft is movably connected to the inner wall of the separation shell, a positioning frame is movably connected to the surface of the rotating shaft, the bottom of the positioning frame is fixedly connected to the inner wall of the separation shell, and a flow guide cone is fixedly connected to the left side of the rotating shaft. The positioning frame can increase the stability of the rotating shaft during rotation, and the flow guide cone prevents water flow from causing turbulence after impacting the rotating shaft.

[0014] The present invention is further configured such that the vortex actuator includes a positioning ring, the surface of which is fixedly connected to the inner wall of the diverter, a rotating ring is slidably connected to the inner wall of the positioning ring, and blades are fixedly connected to the inner wall of the rotating ring. The positioning ring facilitates the installation of the rotating ring, and the blades can cooperate with the rotating ring to rotate under the impact of the water flow. The rotating blades improve the rotation effect of the water flow and increase the oil-water separation speed.

[0015] The present invention is further configured such that a water injection pipe is connected to the bottom of the front side of the tank, and the spiral drain pipe includes three spiral water guide pipes. The water injection pipe can facilitate the injection of the oil-gas-water emulsion mixture into the tank, and the three spiral water guide pipes can force the mixture to be in a rotating flow state.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model utilizes a hydrocyclone separation component, which uses the kinetic energy of the mixture itself to drive the cyclone actuator to rotate and generate centrifugal force. The spiral guide vanes enhance the fluid rotation effect, achieving rapid oil-water separation. The diversion pipe performs secondary separation of the cyclone in the tank. The oil-rich flow is introduced into the fiber coalescence module through the oil delivery pipe, and the water-rich flow enters the separation shell through the water delivery pipe. The entire separation process is entirely self-driven by fluid pressure energy, requiring no external power input. This reduces the equipment's dependence on power interfaces and rotating parts, simplifies the internal structure, reduces the overall weight and volume, and adapts to the space constraints of offshore platforms.

[0018] 2. This utility model utilizes a fiber coalescence module to control the aggregation of residual water droplets in the oil-rich flow through a hydrophilic woven fiber layer in the hydrophilic separation box, and an oleophilic woven fiber layer in the oleophilic separation box to control the aggregation of residual oil droplets in the water-rich flow. This facilitates the separation effect of subsequent fine separation equipment. The guide vanes inside the separation shell drive the semi-friction wheel to rotate under the impact of water flow through vortex vanes on the rotating shaft. The drive strips intermittently push the rotating wheel to control its oscillation, evenly distributing the fluid to the fiber surface and improving contact efficiency and separation effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 A three-dimensional diagram of a self-propelled offshore oil, gas and water separation system; Figure 2 Rear view of a self-propelled offshore oil, gas and water separation system; Figure 3 A cross-sectional view of the tank and diversion pipe in a self-propelled offshore oil, gas and water separation system; Figure 4 An exploded view of a cyclone actuator in a self-propelled offshore oil, gas and water separation system; Figure 5 A schematic diagram of a spiral drainage pipe in a self-propelled offshore oil, gas and water separation system; Figure 6 A cross-sectional view of the separation shell in a self-propelled offshore oil, gas and water separation system; Figure 7 This is a side sectional view of the separation shell in a self-propelled offshore oil, gas and water separation system.

[0021] In the attached diagram: 1. Tank body; 2. Separation shell; 3. Hydrocyclone separation assembly; 31. Diverter pipe; 32. Cyclone actuator; 321. Positioning ring; 322. Rotating ring; 323. Blade; 33. Spiral guide vane; 34. Baffle plate; 35. Spiral drain pipe; 36. Oil delivery pipe; 37. Water delivery pipe; 4. Fiber coalescing module; 41. Hydrophilic separation box; 42. Oleophilic separation box; 43. Guide vane; 44. Rotating wheel; 45. Rotating shaft; 46. Vortex vane; 47. Semi-friction wheel; 48. Drive bar. Detailed Implementation

[0022] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1 Please see Figure 1-7 As shown, this utility model is a self-driven offshore oil-gas-water separation system, including a tank 1 and a hydrocyclone separation assembly 3. A separation shell 2 is provided at the bottom of the tank 1. Fiber coalescing modules 4 are provided on the front and right sides of the separation shell 2. The hydrocyclone separation assembly 3 includes two diversion pipes 31, with one side of each diversion pipe 31 connected to the tank 1. A cyclone actuator 32 is fixedly connected to the top and bottom of the inner sides of the diversion pipe 31. Spiral guide vanes 33 are fixedly connected to the inner walls of the diversion pipe 31 and the inner walls of the tank 1. A baffle 34 is fixedly connected to the bottom of the inner sides of the tank 1. A spiral drain pipe 35 is connected to the top of the baffle 34. The fiber coalescing module 4 is connected to the top of the tank 1 and the diversion pipe 31 via an oil supply pipe 36. The bottom of the diversion pipe 31 is connected to the separation shell 2 via a water supply pipe 37.

[0024] Specifically: the separation shell 2 can separate the rich water flow at the diversion point of the hydrocyclone separation component 3; the diversion pipe 31 can perform secondary separation of the cyclone inside the tank 1; the cyclone driver 32 can control the water flow inside the diversion pipe 31 to rotate under the drive of the water flow, and separate the water and oil in the mixture through centrifugal force, so that the water is thrown to the surrounding area and the oil is gathered in the center; the spiral guide plate 33 can improve the rotation effect of the mixture and accelerate the oil-water separation efficiency; the baffle 34 can facilitate the installation and fixation of the spiral drain pipe 35; the spiral drain pipe 35 can guide the water flow at an angle to the inner wall of the tank 1, and the mixture is quickly put into a rotating state through the guidance; the oil delivery pipe 36 can transport the rich oil flow to the inside of the hydrophilic separation box 41; and the water delivery pipe 37 can transport the rich water flow to the inside of the separation shell 2.

[0025] Example 2 Please see Figure 1-7 As shown, in this embodiment, the fiber coalescence module 4 includes a hydrophilic separation box 41 and an oleophilic separation box 42. The front side of the separation shell 2 is connected to the oleophilic separation box 42, the right side of the oleophilic separation box 42 is fixedly connected to the hydrophilic separation box 41, and the rear side of the hydrophilic separation box 41 is connected to the oil supply pipe 36. A guide vane 43 is movably connected between the two sides of the inner cavity of the separation shell 2, and a rotating wheel 44 is fixedly connected to the surface of the guide vane 43. A rotating shaft 45 is movably connected to the left side of the inner cavity of the separation shell 2, and a vortex vane 46 is fixedly connected to the surface of the rotating shaft 45. A semi-friction vane 46 is fixedly connected to the right side of the surface of the rotating shaft 45. The wheel 47 has a drive bar 48 on its front side. A slide rod is fixedly connected to the top of the inner cavity of the separation shell 2. A sliding sleeve is slidably connected to the surface of the slide rod. The front side of the sliding sleeve is fixedly connected to the drive bar 48. Both sides of the guide vane 43 are movably connected to the inner wall of the separation shell 2 through bearings. The guide vane 43 includes a main shaft. A guide plate is fixedly connected to the front side of the main shaft. The left side of the rotating shaft 45 is movably connected to the inner wall of the separation shell 2. A positioning frame is movably connected to the surface of the rotating shaft 45. The bottom of the positioning frame is fixedly connected to the inner wall of the separation shell 2. A guide cone is fixedly connected to the left side of the rotating shaft 45.

[0026] Specifically: The hydrophilic separation chamber 41 and the oleophilic separation chamber 42 are respectively equipped with a hydrophilic woven fiber layer and an oleophilic woven fiber layer. The hydrophilic woven fiber layer can separate water from the oil-rich flow, and the oleophilic woven fiber layer can separate oil from the water-rich flow. The vortex vane 46 can control the rotation of the rotating shaft 45 and the semi-friction wheel 47 by cooperating with the water flow. The semi-friction wheel 47 can intermittently control the drive bar 48 to move up and down during rotation. During the movement, the drive bar 48 can control the rotation of the rotating wheel 44 and the guide vane 43, causing the guide vane 44 to rotate. 3. Continuous oscillation guides the water-rich flow evenly to the surface of the oleophilic woven fiber layer, improving its distribution uniformity and increasing the separation effect. The slide bar and slide sleeve can limit the drive bar 48, allowing it to be adjusted up and down smoothly, preventing the drive bar 48 from tilting or deviating during movement. The bearing can increase the stability of the guide plate 43 during oscillation. The main shaft can control the oscillation of the guide plate during rotation to achieve a uniform distribution of the water-rich flow. The positioning frame can increase the stability of the rotating shaft 45 during rotation. The guide cone prevents the water flow from impacting the rotating shaft 45 and causing turbulence.

[0027] Example 3 Please see Figure 1-7 As shown, in this embodiment, the vortex actuator 32 includes a positioning ring 321. The surface of the positioning ring 321 is fixedly connected to the inner wall of the diversion pipe 31. A rotating ring 322 is slidably connected to the inner wall of the positioning ring 321. A blade 323 is fixedly connected to the inner wall of the rotating ring 322. A water injection pipe is connected to the bottom of the front side of the tank 1. The spiral drain pipe 35 includes three spiral water guide pipes.

[0028] Specifically: the positioning ring 321 facilitates the installation of the rotating ring 322, the blade 323 can cooperate with the rotating ring 322 to rotate under the impact of water flow, the rotating blade 323 improves the rotation effect of water flow and increases the oil-water separation speed, the water injection pipe facilitates the injection of oil-gas-water emulsion mixture into the tank 1, and the three spiral water guide pipes can force the mixture to be in a rotating flow state.

[0029] The working principle of this utility model is as follows: When the oil-gas-water emulsion mixture is injected into the tank 1 through the water injection pipe, the mixture first contacts the spiral drain pipe 35 inside the tank 1. The spiral drain pipe 35 forcibly guides the mixture to rotate and flow along the inner wall of the tank 1, forming an initial vortex. This, in conjunction with the spiral guide vane 33, enhances the initial oil-water separation effect. The flowing mixture impacts the vortex actuator 32. Under the action of fluid kinetic energy, the blades 323 in the vortex actuator 32 drive the rotating ring 322 to rotate, generating a strong centrifugal force, accelerating the separation of the oil phase and the water phase, causing oil droplets to gather towards the center and water droplets to diffuse outwards. The separated oil-rich flow is introduced into the hydrophilic separation box 41 through the oil delivery pipe 36. The hydrophilic woven fiber layer inside the hydrophilic separation box 41 captures... The system collects residual water droplets in the oil-rich flow, improving the purity of the oil phase. The water-rich flow enters the separation shell 2 through the water supply pipe 37. Inside the separation shell 2, the water-rich flow impacts the vortex vanes 46 on the rotating shaft 45, driving the rotating shaft 45 to rotate. The rotating shaft 45 drives the semi-friction wheel 47 to rotate. The semi-friction wheel 47 intermittently pushes the drive bar 48 to move, which controls the rotating wheel 44 and the guide vane 43 to swing. The swing of the guide vane 43 distributes the water-rich flow evenly on the surface of the oleophilic woven fiber layer, allowing it to collect residual oil droplets in the water-rich flow, thus purifying the water phase. The entire separation process is driven entirely by the flow pressure of the mixture itself, without the need for external power input. All components work together to ensure continuous and efficient oil-gas-water separation in a compact space.

[0030] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A self-propelled offshore oil, gas and water separation system, comprising a tank (1) and a hydrocyclone separation assembly (3), characterized in that: The bottom of the tank (1) is provided with a separation shell (2), and fiber coalescing modules (4) are provided on the front and right sides of the separation shell (2). The hydrocyclone separation assembly (3) includes two diversion pipes (31), with one side of each diversion pipe (31) connected to the tank (1). A cyclone actuator (32) is fixedly connected to the top and bottom of the inner cavity of the diversion pipe (31). A spiral guide plate (33) is fixedly connected to the inner wall of the diversion pipe (31) and the inner wall of the tank (1). A partition plate (34) is fixedly connected to the bottom of the inner cavity of the tank (1). A spiral drain pipe (35) is connected to the top of the partition plate (34). The fiber coalescing module (4) is connected to the top of the tank (1) and the diversion pipe (31) through an oil supply pipe (36). The bottom of the diversion pipe (31) is connected to the separation shell (2) through a water supply pipe (37).

2. The self-propelled offshore oil-gas-water separation system according to claim 1, characterized in that: The fiber coalescing module (4) includes a hydrophilic separation box (41) and an oleophilic separation box (42). The front side of the separation shell (2) is connected to the oleophilic separation box (42), the right side of the oleophilic separation box (42) is fixedly connected to the hydrophilic separation box (41), and the rear side of the hydrophilic separation box (41) is connected to the oil pipeline (36).

3. The self-propelled offshore oil-gas-water separation system according to claim 1, characterized in that: A guide vane (43) is movably connected between the two sides of the inner cavity of the separation shell (2). A rotating wheel (44) is fixedly connected to the surface of the guide vane (43). A rotating shaft (45) is movably connected to the left side of the inner cavity of the separation shell (2). A vortex vane (46) is fixedly connected to the surface of the rotating shaft (45). A semi-friction wheel (47) is fixedly connected to the right side of the surface of the rotating shaft (45). A drive bar (48) is provided on the front side of the semi-friction wheel (47).

4. A self-propelled offshore oil, gas and water separation system according to claim 3, characterized in that: A sliding rod is fixedly connected to the top of the inner cavity of the separation shell (2), and a sliding sleeve is slidably connected to the surface of the sliding rod. The front side of the sliding sleeve is fixedly connected to the drive bar (48).

5. A self-propelled offshore oil, gas and water separation system according to claim 3, characterized in that: The two sides of the guide vane (43) are movably connected to the inner wall of the separation shell (2) through bearings. The guide vane (43) includes a main shaft, and a guide plate is fixedly connected to the front side of the main shaft.

6. A self-propelled offshore oil-gas-water separation system according to claim 3, characterized in that: The left side of the rotating shaft (45) is movably connected to the inner wall of the separation shell (2), and a positioning frame is movably connected to the surface of the rotating shaft (45). The bottom of the positioning frame is fixedly connected to the inner wall of the separation shell (2), and a guide cone is fixedly connected to the left side of the rotating shaft (45).

7. A self-propelled offshore oil, gas and water separation system according to claim 1, characterized in that: The vortex actuator (32) includes a positioning ring (321), the surface of which is fixedly connected to the inner wall of the diverter (31), and a rotating ring (322) is slidably connected to the inner wall of the positioning ring (321), and a blade (323) is fixedly connected to the inner wall of the rotating ring (322).

8. A self-propelled offshore oil, gas and water separation system according to claim 1, characterized in that: The bottom of the front side of the tank (1) is connected to a water injection pipe, and the spiral drain pipe (35) includes three spiral water guide pipes.

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