Integrated high-efficiency energy-saving Christmas tree oil-gas separation device

Abstract

The utility model discloses integrated high -efficient energy -conserving oil tree oil gas separation device relates to oil gas separation technical field. Integrated high -efficient energy -conserving oil tree oil gas separation device, through the way of step by step filtration intercepts silt, impurity in oil gas, compared with traditional fixed filter screen, can more comprehensively block the impurity of different particle size, reduces the problem that the single filter screen leads to the sudden decrease of through -flow area because of local block, maintains the stable flow of fluid in the pretreatment tank, cooperates water supply pipe and solenoid valve and sprays water to the pretreatment tank, washes the oil gas after filtration, can dissolve part soluble impurity, flushes the impurity deposited on the surface of pre -filtering board simultaneously, alleviates the accumulation of impurity on the filter assembly, avoids the resistance increase caused by the thickening of impurity layer, three blowdown pipes can discharge the impurity of filtration interception and the sewage produced by washing in time, prevents the impurity from accumulating in the pretreatment tank, reduces the interference to subsequent oil gas treatment process, maintains the long -term stable operation of device.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas separation technology, and in particular to an integrated, high-efficiency, energy-saving wellhead oil and gas separation device. Background Technology

[0002] In the development of oil and gas fields, the wellhead tree, as the core equipment for wellhead control, needs to undertake multiple functions such as oil and gas separation, pressure regulation, and media transportation. Traditional wellhead oil and gas separation devices usually use pre-filtration equipment to perform primary separation of well fluids, intercepting solid particles and droplets through filter screens to protect downstream cyclone separators, valves, and other precision components.

[0003] In the pre-filtration stage of traditional wellhead oil-gas separation devices, fixed filter structures are commonly used as the core filtration components. These filters are usually installed statically inside the equipment. However, under actual oil and gas field development conditions, well fluids often carry a large number of complex impurities, including but not limited to solid or semi-solid substances such as sand, wax, and asphalt. When these impurities flow through the filter with the well fluid, they are easily deposited on its surface and inside the pores due to the interception effect of the filter. As the operating time accumulates, the impurity layer continues to thicken, causing the effective flow area of ​​the filter to gradually decrease and the fluid resistance to increase significantly, thus affecting the stability of subsequent separation processes. Therefore, we propose an integrated, high-efficiency, and energy-saving wellhead oil-gas separation device. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an integrated, high-efficiency, and energy-saving wellhead oil-gas separation device. This device can solve the problem that in the pre-filtration stage of traditional wellhead oil-gas separation devices, a fixed filter structure is generally used as the core filter component. Such filters are usually installed statically inside the equipment. However, in the actual working conditions of oil and gas field development, well fluids often carry a large number of complex impurities, including but not limited to solid or semi-solid substances such as sand, wax, and asphalt. When these impurities flow through the filter with the well fluid, they are easily deposited on the surface and inside the pores due to the interception effect of the filter. As the operating time accumulates, the impurity layer continues to thicken, causing the effective flow area of ​​the filter to gradually decrease, the fluid resistance to flow to increase significantly, and thus affecting the stability of subsequent separation processes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated, high-efficiency, energy-saving wellhead oil and gas separation device, comprising:

[0006] The pretreatment tank and the sleeve tee are connected by a pipe. The top of the pretreatment tank is equipped with an inspection port.

[0007] The oil and gas pretreatment structure is located on the pretreatment tank.

[0008] The oil and gas pretreatment structure includes three drain pipes, three pre-filter plates, three annular pipes, a solenoid valve, and a water supply pipe. The three drain pipes are all fixedly connected to the pretreatment tank. The three pre-filter plates are all fixedly installed inside the pretreatment tank. The three annular pipes are all fixedly sleeved on the outside of the pretreatment tank. The water supply pipes are fixedly connected to the three annular pipes respectively. The solenoid valve is fixedly installed on the water supply pipe. Multiple water spray elements are fixedly connected to the outer surface of each of the three annular pipes. The ends of the multiple water spray elements away from the corresponding annular pipes extend into the interior of the pretreatment tank.

[0009] Preferably, all of the multiple water spray elements are connected to the interior of the corresponding annular pipe, and all three annular pipes are connected to the interior of the water supply pipe.

[0010] Preferably, a pressure balancing pipe is fixedly connected to the top of the pretreatment tank, and the pressure balancing pipe communicates with the interior of the pretreatment tank.

[0011] Preferably, a connecting pipe is fixedly connected to the side of the pretreatment tank away from the sleeve four-way connector, and the connecting pipe communicates with the interior of the pretreatment tank.

[0012] Preferably, a pressure gauge is fixedly installed on one side of the sleeve four-way, and a sleeve connecting pipe is fixedly installed on the side of the sleeve four-way away from the pressure gauge. The end of the sleeve connecting pipe away from the sleeve four-way is connected to the interior of the pretreatment tank.

[0013] Preferably, an oil pipe four-way is fixedly installed on the top of the sleeve four-way, and a main gate valve is installed on the oil pipe four-way.

[0014] Preferably, an oil nozzle sleeve is fixedly installed on one side of the oil pipe four-way, and an oil outlet pipe is fixedly installed on the side of the oil pipe four-way away from the oil nozzle sleeve.

[0015] Preferably, an oil pressure gauge is fixedly installed on the top of the oil pipe cross.

[0016] Preferably, the water spray component is a direct spray pipe.

[0017] Preferably, the water spray component is a crescent-shaped flat nozzle.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This high-efficiency and energy-saving oil-gas separation device intercepts silt and impurities in oil and gas through a step-by-step filtration process. Compared with traditional fixed filters, it can more comprehensively block impurities of different particle sizes, reduce the problem of sudden reduction in flow area caused by partial blockage of a single filter, maintain stable fluid flow in the pretreatment tank, and spray water into the pretreatment tank through water supply pipes and solenoid valves to wash the filtered oil and gas. This can dissolve some soluble impurities and flush away impurities deposited on the surface of the pre-filter plate, alleviating the accumulation of impurities on the filter components and avoiding increased resistance due to thickened impurity layers. Three drain pipes can promptly discharge the impurities intercepted by filtration and the wastewater generated by washing, preventing impurities from accumulating in the pretreatment tank, reducing interference with subsequent oil and gas treatment processes, and maintaining long-term stable operation of the device. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the pretreatment tank of this utility model;

[0023] Figure 3 This is a schematic diagram of the annular tube structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the sleeve four-way structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the water spray component of this utility model.

[0026] Attached reference numerals: 1. Pretreatment tank; 2. Inspection port; 3. Pressure balancing pipe; 4. Drain pipe; 5. Connecting pipe; 6. Sleeve tee; 7. Pre-filter plate; 8. Ring pipe; 9. Water spray component; 10. Solenoid valve; 11. Water supply pipe; 12. Oil pipe tee; 13. Oil nozzle sleeve; 14. Oil outlet pipe; 15. Oil pressure gauge; 16. Main gate valve; 17. Sleeve pressure gauge; 18. Sleeve connecting pipe. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Pretreatment tank 1: As the core container for oil and gas pretreatment, it is used to contain oil and gas and complete purification processes such as filtration and washing;

[0032] Casing tee 6: A key component connecting the wellhead and pretreatment tank 1, enabling the directional transport of oil and gas from the wellbore to the treatment unit;

[0033] Pressure balance pipe 3: Fixed to the top of pretreatment tank 1, it adjusts the pressure in real time by communicating with the inside of the tank to prevent abnormal pressure from affecting the processing efficiency;

[0034] Sewage pipe 4: All three sewage pipes 4 are fixed to the bottom of the pretreatment tank 1 to discharge the silt and sand impurities and washing wastewater intercepted by the filter, and to prevent sedimentation inside the tank;

[0035] Connecting pipe 5: Fixed to the side of the pretreatment tank 1 away from the sleeve four-way 6, it transports the purified oil and gas to the subsequent separation system;

[0036] Additional explanation for repeated designation of casing tee 6: It connects to the inside of pretreatment tank 1 through casing pipe 18, and integrates casing pressure monitoring and oil and gas transportation functions.

[0037] Pre-filter plate 7: Three pre-filter plates 7 are installed in layers inside the pretreatment tank 1 to filter oil and gas step by step and intercept large particles of mud and sand impurities.

[0038] Ring pipe 8: Three ring pipes 8 are fixedly sleeved on the outside of the pretreatment tank 1, and washing water is sprayed into the tank through the water spraying component 9 to dissolve soluble impurities in the oil and gas.

[0039] Water spray component 9: Multiple water spray components 9 are evenly distributed on the outer surface of the annular pipe 8, with one end connected to the inside of the annular pipe 8 and the other end extending into the pretreatment tank 1 to achieve directional spraying;

[0040] Solenoid valve 10: Installed on water supply pipe 11, it automatically starts and stops the washing water and adjusts the spray flow rate through linkage with the control box;

[0041] Control box: It uses a microprocessor unit (MCU) as the central hub, and collects data from the pressure gauge and oil pressure gauge in real time through the sensor interface module. After analysis by the MCU, the solenoid valve drive circuit uses PWM to precisely control the flow rate of the washing water spray to adapt to the purification needs of oil and gas in different pressure ranges.

[0042] Water supply pipe 11: It is fixedly connected to three ring pipes 8 respectively to provide a continuous and stable washing water source for the water spray component 9;

[0043] Oil pipe tee 12: Fixed to the top of casing tee 6, integrating oil pressure monitoring, flow control and crude oil output functions;

[0044] Oil nozzle sleeve 13: Installed on one side of the oil pipe four-way 12, and cooperates with the oil outlet pipe 14 to realize the stable measurement and external output of the processed crude oil;

[0045] Oil outlet pipe 14: fixed to the side of the oil pipe four-way 12 away from the oil nozzle sleeve 13, serving as the final channel for crude oil export;

[0046] Oil pressure gauge 15: Fixed to the top of the oil pipe tee 12, it monitors the oil pipe pressure in real time to ensure stable pressure during the delivery process;

[0047] Main gate valve 16: Installed on the oil pipe four-way valve 12, it controls the flow of oil and gas through mechanical opening and closing to ensure system safety;

[0048] Sleeve pressure gauge 17: Fixed on one side of sleeve tee 6, it monitors sleeve pressure in real time and provides a basis for adjusting process parameters;

[0049] Casing pipe 18: Fixed to the side of the casing tee 6 away from the casing pressure gauge 17, serving as a transition pipe for oil and gas to enter the pretreatment tank 1 from the casing tee 6.

[0050] Example 1:

[0051] like Figure 1-4 As shown, the arrangement density of water spray elements 9 on the three annular pipes 8 outside the pretreatment tank 1 is set differently according to the pressure range. In the area near the bottom of the pretreatment tank 1, corresponding to the low-pressure oil and gas entry part, the arrangement of water spray elements 9 on the annular pipes 8 is relatively sparse and the diameter of the water spray elements is relatively large; while in the area near the top, corresponding to the high-pressure oil and gas part, the arrangement of water spray elements 9 on the annular pipes 8 is dense and the diameter of the water spray elements is small.

[0052] When low-pressure oil and gas enter, the sparse and large-diameter water spray nozzles 9 can ensure sufficient water flow to pre-wet and pre-filter the oil and gas, avoiding poor pre-filtration due to insufficient water. When high-pressure oil and gas enter, the dense and small-diameter water spray nozzles 9 can form a fine water curtain, more effectively capturing impurities and particles in the oil and gas, and improving pre-filtration efficiency. By optimizing the arrangement of water spray nozzles according to pressure conditions, the device can maintain good pre-filtration performance in oil and gas treatment at different pressures, improving the stability and adaptability of the entire oil and gas separation device.

[0053] Example 2:

[0054] like Figure 5 As shown, when the water spray component 9 is a crescent-shaped flat water spray component, its nozzle is crescent-shaped. Under the same pressure and flow conditions, the water sprayed by the crescent-shaped flat water spray component is a flat fan shape, with a larger coverage area and more uniform distribution. This characteristic makes the water flow more fully contacted with the oil and gas, and can more effectively wet the oil and gas and capture impurities and particles in it.

[0055] Furthermore, when using the device, the extracted oil and gas mixture enters the device through the casing four-way 6, and the casing pressure gauge 17 monitors the casing pressure in real time; the oil and gas are transported to the pretreatment tank 1 through the casing pipe 18, the main gate valve 16 on the oil pipe four-way 12 controls the on / off of the oil and gas transport, and the oil pressure gauge 15 monitors the oil pipe pressure to ensure stable transport pressure.

[0056] After the oil and gas enter the pretreatment tank 1, they are first filtered through three pre-filter plates 7 in stages to intercept the mud and impurities carried in the oil and gas and prevent subsequent pipeline blockage. At the same time, the control box activates the solenoid valve 10, and the water supply pipe 11 supplies water to the three annular pipes 8. The annular pipes 8 spray water into the pretreatment tank 1 through multiple water spray elements 9 on their outer surface to wash the filtered oil and gas, dissolve some soluble impurities, and purify the oil and gas composition.

[0057] Impurities filtered and intercepted, along with wastewater generated during washing, are discharged through three drain pipes 4 to prevent accumulation inside the tank. The pressure balance pipe 3 at the top of the pretreatment tank 1 adjusts the pressure inside the tank in real time to prevent excessively high or low pressure from affecting the oil and gas treatment efficiency.

[0058] The pre-treated and purified oil and gas are output to the subsequent separation system through the connecting pipe 5. The oil nozzle sleeve 13 cooperates with the oil outlet pipe 14 to realize the stable output of the processed crude oil, thus completing the integrated oil and gas pretreatment and transportation process.

[0059] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An integrated, high-efficiency, energy-saving wellhead oil-gas separation device, characterized in that, include: The pretreatment tank (1) and the sleeve tee (6) are connected by a pipe. The top of the pretreatment tank (1) is provided with an inspection port (2). Oil and gas pretreatment structure, the oil and gas pretreatment structure is located on the pretreatment tank (1); The oil and gas pretreatment structure includes three drain pipes (4), three pre-filter plates (7), three annular pipes (8), a solenoid valve (10), and a water supply pipe (11). The three drain pipes (4) are all fixedly connected to the pretreatment tank (1), the three pre-filter plates (7) are all fixedly installed inside the pretreatment tank (1), and the three annular pipes (8) are all fixedly sleeved on the outside of the pretreatment tank (1). Among them, the water supply pipe (11) is fixedly connected to three annular pipes (8), and the solenoid valve (10) is fixedly installed on the water supply pipe (11). Multiple water spraying parts (9) are fixedly connected to the outer surface of the three annular pipes (8), and the ends of the multiple water spraying parts (9) away from the corresponding annular pipes (8) extend into the interior of the pretreatment tank (1).

2. The integrated high-efficiency energy-saving oil well tree oil-gas separation device according to claim 1, characterized in that: Each of the multiple water spray elements (9) is connected to the interior of the corresponding annular pipe (8), and all three annular pipes (8) are connected to the interior of the water supply pipe (11).

3. The integrated high-efficiency energy-saving oil wellhead gas separation device according to claim 1, characterized in that: The top of the pretreatment tank (1) is fixedly connected to a pressure balance pipe (3), which is in communication with the interior of the pretreatment tank (1).

4. The integrated high-efficiency energy-saving wellhead oil-gas separation device according to claim 1, characterized in that: The pretreatment tank (1) is fixedly connected to a connecting pipe (5) on the side away from the sleeve four-way (6), and the connecting pipe (5) communicates with the interior of the pretreatment tank (1).

5. The integrated high-efficiency energy-saving oil well tree oil-gas separation device according to claim 1, characterized in that: A pressure gauge (17) is fixedly installed on one side of the sleeve cross (6), and a sleeve pipe (18) is fixedly installed on the side of the sleeve cross (6) away from the pressure gauge (17). The end of the sleeve pipe (18) away from the sleeve cross (6) is connected to the interior of the pretreatment tank (1).

6. The integrated high-efficiency energy-saving wellhead oil-gas separation device according to claim 1, characterized in that: The top of the sleeve tee (6) is fixedly installed with an oil pipe tee (12), and a main gate valve (16) is installed on the oil pipe tee (12).

7. The integrated high-efficiency energy-saving wellhead oil-gas separation device according to claim 6, characterized in that: An oil nozzle sleeve (13) is fixedly installed on one side of the oil pipe four-way (12), and an oil outlet pipe (14) is fixedly installed on the side of the oil pipe four-way (12) away from the oil nozzle sleeve (13).

8. The integrated high-efficiency energy-saving wellhead oil-gas separation device according to claim 7, characterized in that: An oil pressure gauge (15) is fixedly installed on the top of the oil pipe cross (12).

9. The integrated high-efficiency energy-saving oil well tree oil-gas separation device according to claim 1, characterized in that: The water spray component (9) is a direct spray pipe.

10. The integrated high-efficiency energy-saving wellhead oil-gas separation device according to claim 1, characterized in that: The water spray component (9) is a crescent-shaped flat nozzle.

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