A skid-mounted device for reducing back pressure in oil and gas mixed transportation

Abstract

The utility model provides a kind of oil and gas mixed transport reduces pry equipment, it is related to petroleum and natural gas transportation field, mainly including pry box, liquid inlet pipe network, liquid outlet pipe network and mixed transport pump unit, flange connection is used between each component and integrally fixed in pry box, liquid inlet pipe network is connected with liquid outlet pipe network by mixed transport pump unit, liquid inlet pipe network carries out filtration and decontamination to the oil gas guided in, mixed transport pump unit carries out pressure boost to the oil gas handled, liquid outlet pipe network carries out filtration and heating to the oil gas after pressure boost;Through integration pry technology, originally complex process pipeline is rearranged, and equipment is installed conveniently.In realizing integration, reduce pipeline back pressure, stabilize system pressure, and according to fluid operating condition change, automatically maintain outlet pressure constant, carry out oil and gas mixed transport.The problem that existing oil and gas transportation equipment integration is not high, and the degree of automation is low is solved.

Description

Technical Field

[0001] This utility model relates to the field of oil and natural gas transportation technology, and more specifically, to a skid-mounted device for oil and gas mixed transportation with reduced back pressure. Background Technology

[0002] In the field of oil and gas transportation, mixed oil and gas transportation systems are a common production and transportation method. These systems use pipelines to mix and transport oil, gas, and water to improve transportation efficiency and reduce infrastructure costs. However, in actual operation, due to the complex fluid composition and large pressure fluctuations, the inlet pressure of the mixed transportation network is often high, while downstream processing facilities typically require lower, stable pressures. Therefore, it is necessary to reduce the transportation pressure to avoid system overpressure and equipment damage. Traditional mixed oil and gas transportation systems usually adopt a decentralized layout, with each functional device installed independently and connected by complex process pipelines.

[0003] Traditional mixed-transport systems suffer from large initial footprints, long construction periods, and low efficiency in maintenance and troubleshooting due to dispersed equipment and complex pipelines. Furthermore, they rely on manual labor or single-unit equipment for pressure regulation, making them ill-suited to adapting to changing pipeline conditions. Therefore, there is an urgent need for a highly integrated, easy-to-install, and highly automated skid-mounted system for reducing backpressure in oil and gas mixed-transport systems. Utility Model Content

[0004] The main objective of this invention is to provide a skid-mounted device for oil and gas mixed transportation and backpressure reduction, so as to at least solve the problems of low integration, complex installation and low degree of automation in existing oil and gas mixed transportation and backpressure reduction devices.

[0005] To achieve the above objectives, this utility model provides a skid-mounted equipment for oil and gas mixed transportation and backpressure reduction, comprising: a skid-mounted housing for installing pipelines and equipment; an inlet pipeline network, located within the skid-mounted housing, for filtering and removing contaminants from the oil and gas to be treated introduced from the inlet; a mixed transportation pump unit connected to the inlet pipeline network, used to pressurize the oil and gas entering the inlet pipeline network; an outlet pipeline network, located within the skid-mounted housing, connected to the mixed transportation pump unit, for filtering and heating the pressurized oil and gas; a liquid return electric valve, located between the inlet and outlet pipeline networks, used to balance the pressure and flow rate between the inlet and outlet pipeline networks; and a safety valve, located between the inlet and outlet pipeline networks, used to provide overpressure protection for the outlet pipeline network.

[0006] Furthermore, the skid-mounted enclosure includes a skid base and a skid-mounted chamber mounted on the skid base, with the inlet pipeline, outlet pipeline, and mixing pump unit mounted on the skid base.

[0007] Furthermore, the mixed-transfer pump unit includes a first mixed-transfer pump and a second mixed-transfer pump.

[0008] Furthermore, the liquid inlet network includes: a liquid inlet pipeline, a filter compensator, a filter pipeline, a dirt separator, and a dirt removal pipeline; the outlet of the liquid inlet pipeline is connected to the inlet of the filter compensator, and the outlet of the filter compensator is connected to the inlet of the dirt separator through the filter pipeline; the outlet of the dirt separator is connected to the inlet of the mixed-transfer pump unit through the dirt removal pipeline; the filter compensator is used to filter free solid particles in the oil and gas entering the liquid inlet pipeline, and the dirt separator is used to remove adhesive deposits in the oil and gas entering the filter pipeline.

[0009] Furthermore, an inlet is provided at the inlet end of the liquid inlet pipeline for introducing the oil and gas to be treated; a first liquid outlet / inlet, a first pressure transformer, and a first gate valve are provided on the liquid inlet pipeline, and the first liquid outlet / inlet is connected to the liquid outlet electric valve; the first pressure transformer and the first gate valve are connected by a pipeline; the first pressure transformer is used to indicate the pressure in the liquid inlet pipeline, and the first gate valve is used to control the opening and closing of the liquid inlet pipeline.

[0010] Furthermore, the filter pipeline includes a first branch and a second branch that are simultaneously connected to the filter compensator. A second pressure transformer is installed on the first branch, and a liquid replenishment electric valve is installed on the second branch. The liquid replenishment electric valve is used to regulate the oil and gas pressure in the filter pipeline.

[0011] Furthermore, the sewage treatment pipeline has a third branch connected to a safety valve, a fourth branch connected to a first mixed pump, and a fifth branch connected to a second mixed pump; a safety valve outlet is provided on the third branch, and the safety valve outlet is connected to the safety valve; a first pressure gauge and a second gate valve are provided on the fourth branch, and a second pressure gauge and a third gate valve are provided on the fifth branch, and the first pressure gauge, the second gate valve, the second pressure gauge, and the third gate valve are all connected by pipelines.

[0012] Furthermore, the liquid outlet pipeline network includes a booster pipeline, a heating rod, a heating pipeline, an angle filter, and a liquid outlet pipeline; the outlet of the mixed transfer pump unit is connected to the inlet of the angle filter through the booster pipeline, the outlet of the angle filter is connected to the inlet of the heating rod through the heating pipeline, and the outlet of the heating rod is connected to the inlet of the liquid outlet pipeline; the heating rod is used to heat the oil and gas flowing out from the heating pipeline, and the angle filter is used to intercept solid particles in the oil and gas of the booster pipeline.

[0013] Furthermore, the booster pipeline includes a sixth branch connected to the first mixing pump and a seventh branch connected to the second mixing pump; the sixth branch is equipped with a third pressure gauge, a first check valve, a fourth gate valve, and a safety valve inlet, with the safety valve inlet connected to the safety valve; the third pressure gauge, the first check valve, and the fourth gate valve are connected by a pipeline; the seventh branch is equipped with a fourth pressure gauge, a second check valve, and a fifth gate valve, with the fourth pressure gauge, the second check valve, and the fifth gate valve connected by a pipeline; the first check valve is used to prevent oil and gas in the sixth branch from flowing into the first mixing pump from the angle filter.

[0014] Furthermore, the feature is that an outlet is provided at the outlet end of the liquid outlet pipeline for outputting pressurized oil and gas, and a second liquid outlet, a sixth gate valve, a third pressure transformer and a flow meter are provided on the liquid outlet pipeline. The second liquid outlet is connected to the liquid outlet electric valve, and the sixth gate valve, the third pressure transformer and the flow meter are connected by a pipeline.

[0015] This utility model discloses a skid-mounted equipment for oil and gas mixed transportation with backpressure reduction, relating to the field of oil and natural gas transportation. It mainly includes a skid-mounted housing, an inlet pipeline network, an outlet pipeline network, and a mixed-transport pump unit. All components are connected by flanges and integrally fixed within the skid-mounted housing. The inlet pipeline network is connected to the outlet pipeline network via the mixed-transport pump unit. The inlet pipeline network filters and removes contaminants from the introduced oil and gas, the mixed-transport pump unit pressurizes the processed oil and gas, and the outlet pipeline network filters and heats the pressurized oil and gas. The integrated skid-mounted technology allows for a redesign of the previously complex process pipelines, facilitating equipment installation. While achieving integration, it reduces pipeline backpressure, stabilizes system pressure, and automatically maintains a constant outlet pressure according to changes in fluid conditions for oil and gas mixed transportation. This solves the problems of low integration and low automation in existing oil and gas transportation equipment. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a skid-mounted equipment for oil and gas mixed transportation and backpressure reduction, which is an optional embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the inlet pipeline network and the mixed-transport pump unit of an optional oil and gas mixed-transport backpressure skid-mounted equipment according to an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the outlet pipeline network and the mixed-transport pump unit of an optional oil and gas mixed-transport backpressure skid-mounted equipment according to an embodiment of this utility model.

[0020] The above figures include the following reference numerals:

[0021] 10. Skid-mounted enclosure; 11. Skid-mounted room; 12. Skid base; 20. Liquid inlet network; 21. Liquid inlet line; 211. Liquid outlet / inlet; 212. First voltage transformer; 213. First gate valve; 214. Liquid inlet; 22. Filter compensator; 23. Filter line; 231. Liquid replenishment electric valve; 232. Second voltage transformer; 233. First branch circuit; 234. Second branch circuit; 24. Sludge separator; 25. Sludge removal line; 251. Second gate valve; 252. Third gate valve; 253. Safety valve outlet; 254. First pressure gauge; 255. Second pressure gauge; 256. Fourth branch circuit; 257. Fifth branch circuit; 258. Third branch circuit; 30. 31. Outlet pipe network; 32. Heating rod; 33. Heating pipeline; 34. Angle filter; 35. Booster pipeline; 36. Fifth gate valve; 37. Second check valve; 38. Fourth pressure gauge; 39. Safety valve inlet; 30. Fourth gate valve; 31. First check valve; 32. Third pressure gauge; 33. Sixth branch line; 344. Seventh branch line; 35. Outlet pipe; 36. Sixth gate valve; 37. Third pressure transformer; 38. Flow meter; 39. Second liquid return inlet / outlet; 30. Outlet; 41. Mixing pump unit; 42. First mixing pump; 53. Second mixing pump; 64. Liquid return electric valve; 75. Safety valve. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 1As shown in the figure, an oil and gas mixed transport and backpressure reduction skid-mounted device according to an embodiment of the present invention includes: a skid-mounted housing 10 for installing pipelines and equipment; an inlet pipeline 20, installed inside the skid-mounted housing 10, for filtering and removing contaminants from the oil and gas to be treated introduced from the inlet; a mixed transport pump unit 40, connected to the inlet pipeline 20, for pressurizing the oil and gas entering the inlet pipeline 20; an outlet pipeline 30, installed inside the skid-mounted housing 10, connected to the mixed transport pump unit 40, for filtering and heating the pressurized oil and gas; and a liquid return valve. A rotary valve 50, also known as a liquid-returning electric valve 50, is installed between the inlet pipeline 20 and the outlet pipeline 30. The rotary valve 50 balances the pressure and flow rate between the two pipelines. A safety valve 60, also installed between the inlet pipeline 20 and the outlet pipeline 30, provides overpressure protection for the outlet pipeline 30. Back pressure refers to the reverse pressure generated by downstream resistance during fluid flow. The mixed-transfer pump unit is the core component of the back pressure reduction skid-mounted equipment. Its function is to reduce the inlet pressure by pressurizing the oil and gas and reducing fluid flow resistance. The integrated skid-mounted technology allows for a redesign of the originally complex process pipelines, facilitating equipment installation. While achieving integration, it reduces pipeline back pressure, stabilizes system pressure, and automatically maintains a constant outlet pressure according to changes in fluid conditions for mixed oil and gas transport. This solves the problems of low integration and low automation in existing oil and gas transport equipment.

[0024] In specific implementation, such as Figure 1 As shown, the skid-mounted enclosure 10 includes a skid base 12 and a skid-mounted chamber 11 mounted on the skid base 12. The inlet pipe network 20, the outlet pipe network 30, and the mixing pump unit 40 are mounted on the skid base. The skid base 12 is a steel base formed by welding and has the function of movement. As a modular base, it has several threaded holes. The inlet pipe network 20, the outlet pipe network 30, and the mixing pump unit 40 are fixed to the skid base 12 by bolt connection. The skid-mounted chamber 11 is a steel shell that can provide protection for the pipes and equipment arranged inside.

[0025] Furthermore, the mixed-transfer pump unit 40 includes a first mixed-transfer pump 41 and a second mixed-transfer pump 42. Depending on the operating conditions, the first mixed-transfer pump 41 and the second mixed-transfer pump 42 can be selectively activated. When the requirement for reducing back pressure of the inlet oil and gas is low, only one mixed-transfer pump needs to be activated. When the requirement for reducing back pressure of the inlet oil and gas is high, both mixed-transfer pumps are activated simultaneously.

[0026] Furthermore, such as Figure 1 and Figure 2As shown, the inlet pipeline network 20 includes: an inlet pipeline 21, a filter compensator 22, a filter pipeline 23, a separator 24, and a separator pipeline 25; the outlet of the inlet pipeline 21 is connected to the inlet of the filter compensator 22, and the outlet of the filter compensator 22 is connected to the inlet of the separator 24 via the filter pipeline 23; the outlet of the separator 24 is connected to the inlet of the mixed-transfer pump unit 40 via the separator pipeline 25; the inlet pipeline 21, the filter compensator 22, the filter pipeline 23, the separator 24, the separator pipeline 25, and the mixed-transfer pump unit... All connections are detachably made via flanges. Oil and gas enter the filter compensator 22 from the inlet pipe 21. The filter compensator 22 is used to filter free solid particles in the oil and gas, which are mainly large impurities. After filtration, the oil and gas enter the descaling device 24 through the filter pipe 23. The descaling device 24 is used to remove adhesive deposits in the oil and gas, which are mainly wax and scale impurities. After descaling, the oil and gas enter the mixed pump unit 40 through the descaling pipe 25.

[0027] Furthermore, such as Figure 2 As shown, the inlet end of the liquid inlet pipeline 21 is provided with an inlet port 214 for introducing the oil and gas to be treated; the liquid inlet pipeline 21 is provided with a first liquid return inlet / outlet 211, a first pressure transformer 212, and a first gate valve 213. The first liquid return inlet / outlet 211 is detachably connected to the liquid return electric valve 50 via a flange; the first pressure transformer 212 and the first gate valve 213 are both detachably connected to the pipeline via flanges; the first pressure transformer 212 is used to detect the pressure at the inlet end of the liquid inlet pipeline 21 and transmit it remotely to provide data for the monitoring of the entire skid operation; the first gate valve 213 is used to control the opening and closing of the liquid inlet pipeline 21. When closed, it blocks the entry of external oil and gas into the downstream process, which facilitates the maintenance of the skid.

[0028] Furthermore, such as Figure 2 As shown, the filter pipeline 23 includes a first branch 233 and a second branch 234 that are simultaneously connected to the filter compensator 22. A second pressure transformer 232 is installed on the first branch 233, and a liquid replenishing electric valve 231 is installed on the second branch 234. The second pressure transformer 232, the liquid replenishing electric valve 231 and the pipeline are detachably connected by flanges. The second pressure transformer 232 is used to detect and transmit the oil and gas pressure in the filter pipeline 23. The liquid replenishing electric valve 231 is used to regulate the oil and gas pressure in the filter pipeline 23. When the pressure decreases and the flow rate cannot meet the inlet requirements of the pump, the liquid replenishing electric valve 231 opens, increasing the pipe diameter from the filter compensator 22.

[0029] Furthermore, such as Figure 2As shown, the sludge removal pipeline 25 has a third branch 258 connected to the safety valve 60, a fourth branch 256 connected to the first mixing pump 41, and a fifth branch 257 connected to the second mixing pump 42. A safety valve outlet 253 is provided on the third branch 258, and the safety valve outlet 253 is detachably connected to the safety valve 60 via a flange. A first pressure gauge 254 and a second gate valve 251 are provided on the fourth branch 256, and a second pressure gauge 255 and a third gate valve 252 are provided on the fifth branch 257. The first pressure gauge 254, the second gate valve 251, the second pressure gauge 255, and the third gate valve 252 are all detachably connected to the pipeline via flanges. The first pressure gauge 254 is used for real-time and intuitive monitoring. The first pressure gauge 255 indicates the oil and gas pressure entering the first mixing pump 41 from the fourth branch 256, and the second pressure gauge 255 indicates the oil and gas pressure in the fifth branch 257 for the convenience of the observer. The second gate valve 251 is used to control the opening and closing of the fourth branch 256, and the third gate valve 252 is used to control the opening and closing of the fifth branch 257. Depending on the working conditions, when the requirement for reducing back pressure of the inlet oil and gas is low, the first mixing pump 41 and the second gate valve 251 are opened, or the second mixing pump 42 and the third gate valve 252 are opened. When the requirement for reducing back pressure of the inlet oil and gas is high, the first mixing pump 41, the second gate valve 251, the second mixing pump 42 and the third gate valve 252 are opened simultaneously.

[0030] Furthermore, such as Figure 3 As shown, the liquid outlet pipeline 30 includes a booster pipeline 34, a heating rod 31, a heating pipeline 32, an angle filter 33, and a liquid outlet pipeline 35. The outlet of the mixed-transfer pump unit 40 is connected to the inlet of the angle filter 33 through the booster pipeline 34. The outlet of the angle filter 33 is connected to the inlet of the heating rod 31 through the heating pipeline 32. The outlet of the heating rod 31 is connected to the inlet of the liquid outlet pipeline 35. The connections between the booster pipeline 34, the heating rod 31, the heating pipeline 32, the angle filter 33, the liquid outlet pipeline 35, and the mixed-transfer pump unit are all detachably connected via flanges. The oil and gas flowing out of the outlet of the mixed-transfer pump unit 40 enters the angle filter 33 through the booster pipeline 34. The angle filter 33 is used to intercept rubber particles in the oil and gas to prevent rubber particles from entering the heater and affecting the normal operation of the downstream pipeline. After being intercepted, the oil and gas enter the heating rod 31 through the heating pipeline 32. The heating rod 31 heats the incoming oil and gas. The heated oil and gas is then output to the external pipeline through the liquid outlet pipeline 35.

[0031] Furthermore, such as Figure 3As shown, the booster pipeline 34 includes a sixth branch 348 connected to the first mixing pump 41 and a seventh branch 349 connected to the second mixing pump 42. The sixth branch 348 is equipped with a third pressure gauge 347, a first check valve 346, a fourth gate valve 345, and a safety valve inlet 344. The safety valve inlet 344 and the safety valve 60 are detachably connected via flanges. The third pressure gauge 347, the first check valve 346, and the fourth gate valve 345 are all detachably connected to the pipeline via flanges. The seventh branch 349 is equipped with a fourth pressure gauge 343, a second check valve 342, and a fifth gate valve 341. The fourth pressure gauge 343, the second check valve 342, and the fifth gate valve 341 are all detachably connected to the pipeline via flanges. The third pressure gauge 347 is used to indicate the oil and gas pressure in the sixth branch 348, and the first check valve... 346 is used to prevent oil and gas in the sixth branch 348 from flowing into the first mixing pump 41 from the angle filter 33. The fourth gate valve 345 is used to control the opening and closing of the sixth branch 348. When the pump outlet pressure is too high, the oil and gas in the booster line 34 enters the decontamination line 25 of the inlet pipeline 20 through the safety valve 60, providing overpressure protection for the inlet pipeline 20 and the outlet pipeline 30. The fourth pressure gauge 343 is used to indicate the oil and gas pressure in the seventh branch 349. The second check valve 342 is used to prevent oil and gas in the seventh branch 349 from flowing into the second mixing pump 42 from the angle filter 33. The fifth gate valve is used to control the opening and closing of the seventh branch 349. According to the working conditions, when the first mixing pump 41 is turned on, the fourth gate valve 345 is opened at the same time. When the second mixing pump is turned on, the fifth gate valve 341 is opened at the same time.

[0032] Furthermore, such as Figure 3 As shown, the outlet end of the liquid outlet pipeline 35 is provided with an outlet port 355 for outputting pressurized oil and gas. A second liquid return inlet / outlet 354, a sixth gate valve 351, a third pressure transformer 352, and a flow meter 353 are installed on the liquid outlet pipeline 35. The second liquid return inlet / outlet 354 is detachably connected to the liquid return electric valve 50 via a flange. The sixth gate valve 351, the third pressure transformer 352, and the flow meter 353 are all detachably connected to the pipeline via flanges. The sixth gate valve 351 is used to control the opening and closing of the liquid outlet pipeline 35. The third pressure transformer 352 is used for... The pressure in the outlet pipeline 35 is detected and transmitted remotely to provide data for the operation of the entire skid. The flow meter 353 is used to measure the flow rate of the pump output and transmit it remotely. When the inlet pressure decreases and cannot meet the inlet demand of the mixed pump, the liquid discharge electric valve 50 opens to supplement the liquid volume of the mixed pump outlet from the outlet pipeline 35 of the outlet pipeline network 30 to the inlet pipeline 21 of the inlet pipeline network 20, so as to prevent the mixed pump from running dry due to insufficient inlet flow. Finally, the oil and gas after filtration, pressurization and heating are output to the external pipeline through the outlet end of the outlet pipeline 35.

[0033] In actual operation, oil and gas enter from the inlet 214 of the inlet pipe 21 of the inlet network 20, and then enter the filter compensator 22 from the inlet pipe 21. The filter compensator 22 removes free solid particles in the oil and gas. Then, the oil and gas enter the descaling device 24 through the filter pipe 23. The descaling device 24 removes adhesive deposits in the oil and gas. After that, the oil and gas enter the mixed transfer pump unit 40 through the descaling pipe 25. The mixed transfer pump unit 40 reduces the inlet back pressure in the pipeline and increases the pressure of the oil and gas. The pressurized oil and gas enter the angle filter 33 through the pressurization pipe 34. The angle filter 33 filters out the rubber particles in it. Then, it enters the heating rod 31 through the heating pipe 32 for heating, and finally outputs it to the outside through the outlet pipe 35. During the operation of the equipment, the liquid return electric valve 50 balances the oil and gas pressure in the pipeline in real time, and the safety valve 60 provides overpressure protection for the equipment. The pressure values ​​at different positions in the pipeline are transmitted remotely through the first pressure transformer 212, the second pressure transformer 232, and the third pressure transformer 352, and the liquid return electric valve 50 and the liquid replenishment electric valve 231 are adjusted accordingly to realize the automatic pressure regulation function of maintaining a constant outlet pressure according to the changes in fluid conditions.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A skid-mounted device for oil and gas mixed transportation and backpressure reduction, characterized in that, include: Skid-mounted enclosure (10); The liquid inlet pipeline (20) is installed inside the skid-mounted housing (10) to filter and remove contaminants from the oil and gas to be treated introduced from the inlet; Mixed pump unit (40), the mixed pump unit (40) is connected to the liquid inlet network (20), the mixed pump unit (40) is used to pressurize the oil and gas entering the liquid inlet network (20); The liquid outlet pipeline (30) is installed inside the skid-mounted housing (10). The liquid outlet pipeline (30) is connected to the mixed pump unit (40) to filter and heat the pressurized oil and gas. A liquid-returning electric valve (50) is disposed between the liquid inlet network (20) and the liquid outlet network (30). The liquid-returning electric valve (50) is used to balance the pressure and flow rate between the liquid inlet network (20) and the liquid outlet network (30). Safety valve (60) is disposed between the inlet pipe network (20) and the outlet pipe network (30), and the safety valve (60) is used to provide overpressure protection for the outlet pipe network (30).

2. The skid-mounted equipment for oil and gas mixed transportation and pressure reduction according to claim 1, characterized in that, The skid-mounted enclosure includes a skid base (12) and a skid-mounted chamber (11) mounted on the skid base (12). The inlet pipe network (20), the outlet pipe network (30), and the mixing pump unit (40) are mounted on the skid base (12).

3. The skid-mounted equipment for oil and gas mixed transportation and backpressure reduction according to claim 1, characterized in that, The mixed pump unit (40) includes a first mixed pump (41) and a second mixed pump (42).

4. The skid-mounted equipment for oil and gas mixed transportation and pressure reduction according to claim 3, characterized in that, The liquid inlet network (20) includes: liquid inlet pipeline (21), filter compensator (22), filter pipeline (23), dirt remover (24) and dirt removal pipeline (25). The outlet of the inlet pipe (21) is connected to the inlet of the filter compensator (22), and the outlet of the filter compensator (22) is connected to the inlet of the dirt separator (24) through the filter pipe (23); the outlet of the dirt separator (24) is connected to the inlet of the mixed pump unit (40) through the dirt separator pipe (25). The filter compensator (22) is used to filter free solid particles in the oil and gas entering the inlet pipe (21), and the descaling device (24) is used to remove adhesive deposits in the oil and gas entering the filter pipe (23).

5. The oil and gas mixed transportation and backpressure reduction skid-mounted equipment according to claim 4, characterized in that, The inlet end of the liquid inlet pipeline (21) is provided with an inlet port (214) for introducing the oil and gas to be treated; A first liquid discharge inlet / outlet (211), a first pressure transformer (212), and a first gate valve (213) are provided on the liquid inlet pipeline (21). The first liquid discharge inlet / outlet (211) is connected to the liquid discharge electric valve (50). The first pressure transformer (212) and the first gate valve (213) are connected by a pipeline. The first pressure transformer (212) is used to indicate the pressure in the liquid inlet pipe (21), and the first gate valve (213) is used to control the opening and closing of the liquid inlet pipe (21).

6. The oil and gas mixed transportation and backpressure reduction skid-mounted equipment according to claim 4, characterized in that, The filter pipeline (23) includes a first branch (233) and a second branch (234) that are simultaneously connected to the filter compensator (22). A second voltage transformer (232) is installed on the first branch (233); A liquid replenishment electric valve (231) is provided on the second branch (234); the liquid replenishment electric valve (231) is used to regulate the oil and gas pressure in the filter pipeline (23).

7. The skid-mounted equipment for oil and gas mixed transportation and pressure reduction according to claim 4, characterized in that, The sewage removal pipeline (25) has a third branch (258) connected to the safety valve (60), a fourth branch (256) connected to the first mixing pump (41) and a fifth branch (257) connected to the second mixing pump (42). A safety valve outlet (253) is provided on the third branch (258), and the safety valve outlet (253) is connected to the safety valve (60); The fourth branch (256) is equipped with a first pressure gauge (254) and a second gate valve (251); A second pressure gauge (255) and a third gate valve (252) are installed on the fifth branch (257); The first pressure gauge (254), the second gate valve (251), the second pressure gauge (255), and the third gate valve (252) are all connected by pipelines.

8. The skid-mounted equipment for oil and gas mixed transportation and backpressure reduction according to claim 3, characterized in that, The liquid outlet pipeline (30) includes a pressurization pipeline (34), a heating rod (31), a heating pipeline (32), an angle filter (33), and a liquid outlet pipeline (35). The outlet of the mixed pump unit (40) is connected to the inlet of the angle filter (33) through the booster pipe (34), the outlet of the angle filter (33) is connected to the inlet of the heating rod (31) through the heating pipe (32), and the outlet of the heating rod (31) is connected to the inlet of the liquid outlet pipe (35). The heating rod (31) is used to heat the oil and gas flowing out from the heating pipe (32), and the angle filter (33) is used to intercept solid particles in the oil and gas of the booster pipe (34).

9. The oil and gas mixed transportation and backpressure reduction skid-mounted equipment according to claim 8, characterized in that, The booster line (34) includes a sixth branch (348) connected to the first mixing pump (41) and a seventh branch (349) connected to the second mixing pump (42). The sixth branch (348) is equipped with a third pressure gauge (347), a first check valve (346), a fourth gate valve (345), and a safety valve inlet (344), the safety valve inlet (344) and the safety valve (60) are connected; the third pressure gauge (347), the first check valve (346) and the fourth gate valve (345) are connected by a pipeline; The seventh branch (349) is equipped with a fourth pressure gauge (343), a second check valve (342) and a fifth gate valve (341), and the fourth pressure gauge (343), the second check valve (342) and the fifth gate valve (341) are connected by a pipeline; The first check valve (346) is used to prevent oil and gas in the sixth branch (348) from flowing into the first mixing pump (41) from the angle filter (33).

10. The oil and gas mixed transportation and backpressure reduction skid-mounted equipment according to claim 8, characterized in that, The outlet end of the liquid outlet pipeline (35) is provided with an outlet port (355) for outputting pressurized oil and gas. The liquid outlet pipeline (35) is provided with a second liquid inlet / outlet (354), a sixth gate valve (351), a third pressure transformer (352) and a flow meter (353). The second liquid inlet / outlet (354) is connected to the liquid outlet electric valve (50). The sixth gate valve (351), the third pressure transformer (352) and the flow meter (353) are connected by a pipeline.

Images