Wellhead crude oil output metering device

Abstract

The utility model relates to the technical field of wellhead crude oil output metering, and discloses a wellhead crude oil output metering device which comprises a workbench, a separation box is fixedly connected to the outer side of the workbench, a plurality of heating assemblies are arranged on the outer side of the separation box, and an oil pumping assembly is arranged on the inner side of the end of the separation box. An oil transportation weighing assembly is arranged at the other end of the separation box, a gas separation assembly is arranged at the top of the separation box, and a filtering water pumping assembly is arranged on the inner side of the bottom of the separation box; the oil pumping assembly comprises a first pipeline. According to the device, the gas separation assembly, the filtering and water pumping assembly and the like are adopted for multi-stage separation. The gas separation assembly pumps out gas from crude oil through a vacuum pump and stores the gas, the filtering water pumping assembly filters water through a filtering pipe and a plurality of filtering nets and then pumps the water, thorough separation of oil, water and gas can be effectively achieved, and the separation efficiency and effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wellhead crude oil output measurement technical field especially relates to a wellhead crude oil output measurement device. BACKGROUND

[0002] A wellhead crude oil output measurement device is a comprehensive equipment specially used for separating, measuring and monitoring the mixture of crude oil, associated gas and water etc. produced at the wellhead of an oil well. It is usually composed of multiple functional components, which work cooperatively to realize efficient treatment and accurate measurement of the wellhead output.

[0003] At present, the three-phase separation of oil, water and gas in the wellhead crude oil output measurement device is carried out by gravity separation method, which does not need to add a large amount of chemical reagent and does not need to provide separation power by complex power equipment. The main equipment such as separation tank and separation pool has relatively simple structure, and the construction and operation cost is relatively low. In the absence of strong external interference, gravity as a stable natural force can continuously play a role, so that oil, water and gas can be stably separated according to the density difference, and the separation effect will not be greatly affected by small changes in external factors.

[0004] Although the gravity separation method has low cost and good stability, the stratification speed of oil, water and gas under the action of gravity is slow, especially for the oil droplets and water droplets with small particle size, the settling or floating speed is very slow, which leads to low overall separation efficiency. And it is difficult for gravity separation method to completely separate oil, water and gas, especially for water-in-oil or oil-in-water emulsion, and gas in the form of small bubbles in oil or water, gravity is difficult to completely separate them, and there will be more residues. Therefore, a wellhead crude oil output measurement device is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a wellhead crude oil output measurement device, which aims at improving the problem that oil, water and gas cannot be completely separated in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A wellhead crude oil output measurement device, comprising a workbench, a separation tank is fixedly connected outside the workbench, a plurality of heating components are arranged outside the separation tank, an oil pumping component is arranged inside the end of the separation tank, an oil conveying and weighing component is arranged at the other end of the separation tank, a gas separation component is arranged at the top of the separation tank, and a filtering and water pumping component is arranged inside the bottom of the separation tank.

[0008] The oil pumping assembly comprises a pipeline I, one end of the pipeline I is fixedly connected to the inner side of the separation tank, the other end of the pipeline I is fixedly connected with a connecting assembly, the connecting assembly is connected with the output end of the wellhead crude oil, the middle part of the pipeline I is fixedly connected with an oil pumping pump I, the oil pumping pump I is arranged outside the workbench, and a speed reduction valve is arranged in the middle part of one end of the pipeline I close to the separation tank.

[0009] As a further description of the above technical scheme:

[0010] The gas separation assembly comprises a pipeline II, the pipeline II is fixedly connected to the inner side of the top of the separation tank, the other end of the pipeline II is fixedly connected with a gas storage tank, the middle part of the pipeline II is provided with a vacuum pump, the vacuum pump is fixedly connected to the outer side of the separation tank, the outer side of the workbench is provided with a connecting seat, and the gas storage tank is slidingly connected to the inner side of the connecting seat.

[0011] As a further description of the above technical scheme:

[0012] The filtered water pumping assembly comprises a filter pipe, the filter pipe is fixedly connected to the inner side of the bottom of the separation tank, a plurality of filter screens are arranged in the inner side of the filter pipe, a connecting funnel is fixedly connected to the bottom of the filter pipe, and a valve assembly is fixedly connected to the outer side of the bottom of the connecting funnel.

[0013] As a further description of the above technical scheme:

[0014] The filtered water pumping assembly further comprises a pipeline III, one end of the pipeline III is fixedly connected to the bottom of the connecting funnel, a water tank is fixedly connected to the outer side of the workbench, the other end of the pipeline III is fixedly connected to the inner side of the water tank, and a water pumping pump is arranged in the middle part of the pipeline III.

[0015] As a further description of the above technical scheme:

[0016] The oil conveying and weighing assembly comprises a pipeline IV, the pipeline IV is fixedly connected to the inner side of the separation tank, the other end of the pipeline IV is fixedly connected with an oil storage tank, and an oil pumping pump II is arranged in the middle part of the pipeline IV.

[0017] As a further description of the above technical scheme:

[0018] The oil conveying and weighing assembly further comprises a plurality of bases, the plurality of bases are fixedly connected to the outer side of the workbench, a weighing device is fixedly connected to the outer side of the plurality of bases, the oil storage tank is fixedly connected to the middle part of the outer side of the weighing device, and a display is fixedly connected to the end of the outer side of the weighing device.

[0019] As a further description of the above technical scheme:

[0020] The heating assembly comprises a heating box fixedly connected to the outside of the separation box, and heating wire assemblies are arranged on the inner sides of both ends of the heating box.

[0021] Further description of the above technical solution:

[0022] The inner sides of the middle parts of the oil storage tank and the weighing device are fixedly connected with external pipelines, and the inner sides of the end parts of the external pipelines are also fixedly connected with valve assemblies.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1. In the utility model, the device is separated by a gas separation assembly and a filtering water pumping assembly. The gas separation assembly pumps gas out of crude oil by a vacuum pump and stores it, and the filtering water pumping assembly pumps water after filtering by a filter pipe and multiple filter screens, which can effectively separate oil, water and gas and improve separation efficiency and effect.

[0025] 2. In the utility model, the weighing device in the oil conveying and weighing assembly measures the weight of the oil storage tank and crude oil in it in real time, and the display shows the result. This direct weighing method can accurately measure the output of crude oil, provide reliable data support for oilfield production management, and help to reasonably arrange production plans and evaluate oil well capacity. DRAWINGS

[0026] Figure 1 A perspective view of the wellhead crude oil output metering device is provided.

[0027] Figure 2 A structure diagram of a gas storage tank of the wellhead crude oil output metering device is provided.

[0028] Figure 3 A structure diagram of a heating wire assembly of the wellhead crude oil output metering device is provided.

[0029] Figure 4 A structure diagram of a filter screen of the wellhead crude oil output metering device is provided.

[0030] Figure 5 A structure diagram of an external pipeline of the wellhead crude oil output metering device is provided.

[0031] Figure 6 A structure diagram of a speed reduction valve of the wellhead crude oil output metering device is provided.

[0032] LEGEND:

[0033] 1, workbench; 2, oil pump 1; 3, speed reducer valve; 4, oil storage tank; 5, heating box; 6, weighing device; 7, display; 8, gas storage tank; 9, external pipeline; 10, pipeline 1; 11, pipeline 2; 12, pipeline 3; 13, pipeline 4; 14, separation tank; 15, vacuum pump; 16, connecting seat; 17, heating wire assembly; 18, filter pipe; 19, filter screen; 20, connecting funnel; 21, valve assembly; 22, water pump; 23, water tank; 24, oil pump 2; 25, base; 26, connecting assembly. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0035] Referring to Figure 1 and Figure 6 An embodiment provided by the utility model: a wellhead crude oil production metering device, comprising a workbench 1, the workbench 1 is fixedly connected with a separation tank 14 outside, a plurality of heating assemblies are arranged on the outside of the separation tank 14, an oil extraction assembly is arranged on the inner side of the end of the separation tank 14, an oil conveying and weighing assembly is arranged on the other end of the separation tank 14, a gas separation assembly is arranged on the top of the separation tank 14, and a filter water extraction assembly is arranged on the inner side of the bottom of the separation tank 14.

[0036] The oil extraction assembly comprises a pipeline 1 10, the end of the pipeline 1 10 is fixedly connected to the inner side of the separation tank 14, the other end of the pipeline 1 10 is fixedly connected with a connecting assembly 26, the connecting assembly 26 is connected with the output end of the wellhead crude oil, the middle of the pipeline 1 10 is fixedly connected with an oil pump 1 2, the oil pump 1 2 is arranged on the outer side of the workbench 1 and connected with the pipeline 1 10 through the connecting assembly 26. The oil pump 1 2 is installed on the outer side of the workbench 1 and fixedly connected with the middle of the pipeline 1 10, the oil pump 1 2 is started, and the suction force thereof is used to extract the wellhead crude oil along the pipeline 1 10 and convey it to the separation tank 14. The middle of the end of the pipeline 1 10 close to the separation tank 14 is provided with a speed reducer valve 3. The speed reducer valve 3 can adjust the flow rate of the crude oil entering the separation tank 14, so that the crude oil enters the separation tank 14 relatively stably, avoiding affecting the subsequent separation operation due to too fast flow rate.

[0037] Referring to Figure 1 and Figure 2The gas separation assembly comprises a second pipe 11 fixedly connected to the inner side of the top of the separation tank 14, the other end of the second pipe 11 is fixedly connected with the gas storage tank 8, and a vacuum pump 15 is arranged in the middle of the second pipe 11. After preliminary separation in the separation tank 14, the gas will rise and gather at the top. The second pipe 11 fixedly connected to the inner side of the top of the separation tank 14 will extract the gas at the top under the action of the vacuum pump 15. The vacuum pump 15 is fixedly connected to the outer side of the separation tank 14, and the vacuum pump 15 is installed on the outer side of the separation tank 14 and connected to the middle of the second pipe 11 to provide the power for gas extraction. The workbench 1 is provided with a connecting seat 16 on the outer side, and the gas storage tank 8 is slidably connected to the inner side of the connecting seat 16. The extracted gas is transported to the gas storage tank 8 through the second pipe 11 and stored in the gas storage tank 8. The gas storage tank 8 is slidably connected to the inner side of the connecting seat 16 on the outer side of the workbench 1, which is convenient for installation, disassembly and maintenance.

[0038] With reference to Figure 1 and Figure 4 The filtered water extraction assembly comprises a filter pipe 18 fixedly connected to the inner side of the bottom of the separation tank 14, a plurality of filter screens 19 arranged in the inner side of the filter pipe 18, a connecting funnel 20 fixedly connected to the bottom of the filter pipe 18, and a valve assembly 21 fixedly connected to the outer side of the bottom of the connecting funnel 20. In the separation tank 14, water will sink to the bottom due to its greater density than oil. The filter pipe 18 fixedly connected to the inner side of the bottom of the separation tank 14 and the plurality of filter screens 19 arranged in the inner side of the filter pipe 18 filter the water at the bottom to remove impurities, oil droplets and the like contained in the water. The filtered water extraction assembly further comprises a third pipe 12, the end of the third pipe 12 is fixedly connected to the bottom of the connecting funnel 20, a water tank 23 is fixedly connected to the outer side of the workbench 1, the other end of the third pipe 12 is fixedly connected to the inner side of the water tank 23, and a water pump 22 is arranged in the middle of the third pipe 12. When water needs to be extracted, the valve assembly 21 is opened, the water pump 22 is started, and the filtered water is extracted from the connecting funnel 20 through the third pipe 12 and stored in the water tank 23 fixedly connected to the outer side of the workbench 1.

[0039] With reference to Figure 1 and Figure 5The oil conveying and weighing assembly comprises a pipeline IV 13 fixedly connected to the inner side of the separation tank 14, an oil storage tank 4 fixedly connected to the other end of the pipeline IV 13, and an oil pumping machine II 24 arranged in the middle of the pipeline IV 13 and fixedly connected to the outer side of the workbench 1. The oil pumping machine II 24 is started to convey the crude oil in the separation tank 14 to the oil storage tank 4 through the pipeline IV 13. The oil storage tank 4 is fixedly connected to the middle outer side of the weighing device 6 supported by the plurality of bases 25 on the outer side of the workbench 1. The oil conveying and weighing assembly further comprises the plurality of bases 25 fixedly connected to the outer side of the workbench 1, the weighing device 6 fixedly connected to the outer side of the plurality of bases 25, the oil storage tank 4 fixedly connected to the middle outer side of the weighing device 6, and the display 7 fixedly connected to the outer side of the end of the weighing device 6. The weighing device 6 can measure the weight of the oil storage tank 4 and the crude oil therein in real time and transmit the weight data to the display 7 fixedly connected to the outer side of the end to be displayed, so as to realize accurate measurement of the crude oil output.

[0040] With reference to Figure 1 and Figure 3 The heating assembly comprises a heating tank 5 fixedly connected to the outer side of the separation tank 14 and a heating wire assembly 17 arranged in the inner side of each end of the heating tank 5. The heating wire assembly 17 arranged in the inner side of each end of the heating tank 5 generates heat after being electrified to heat the crude oil in the separation tank 14. After the temperature is appropriately increased, the flowability of each phase is enhanced, which is helpful to better stratification of oil, water and gas according to the density difference and realization of preliminary separation. The middle inner side of the oil storage tank 4 and the weighing device 6 is fixedly connected with an external pipeline 9, and the end inner side of the external pipeline 9 is also fixedly connected with a valve assembly 21. The external pipeline 9 in the middle inner side of the oil storage tank 4 and the weighing device 6 and the valve assembly 21 in the end inner side thereof can be externally connected with other equipment or further processed according to actual needs, which is convenient and flexible.

[0041] Working principle: first, the crude oil produced from the wellhead is connected to the pipeline I 10 through the connecting assembly 26, and then the oil pumping machine I 2 is started to pump the crude oil from the wellhead and convey it into the separation tank 14. In the conveying process, the speed regulating valve 3 can adjust the flow rate of the crude oil into the separation tank 14 to ensure the stability of the subsequent separation process. After the crude oil is conveyed into the separation tank 14, the heating assembly on the outer side of the separation tank 14 works, and the heating wire assembly 17 in the inner side of each end of the heating tank 5 heats the crude oil in the separation tank 14. The purpose of heating is to reduce the viscosity of the crude oil and promote the separation of oil, water and gas in the crude oil.

[0042] Because the density of gas is small, it will gather in the top of the separation tank 14. So the vacuum pump 15 is started, the gas in the separation tank 14 is pumped out through the pipe two 11 and transported to the gas storage tank 8 for storage. Because the water in the crude oil is large in density, it will settle in the bottom of the separation tank 14. The filter pipe 18 inside the bottom plays a role, the multiple filter screens 19 inside it filter the water and remove the impurities and oil drops contained in the water. The filtered water is collected through the connecting funnel 20, and the valve assembly 21 can control the on-off of the water flow. The water pump 22 is started, and the filtered water is transported to the water tank 23 through the pipe three 12 for storage.

[0043] The crude oil after gas and water separation is finally transported to the oil storage tank 4 through the pipe four 13 from the separation tank 14 by the start of the oil pump two 24. The oil storage tank 4 is placed on the weighing device 6, the weighing device 6 measures the weight of the oil storage tank 4 and the crude oil in it in real time and transmits the measurement result to the display 7 for display, so as to realize the metering of the crude oil output.

[0044] Finally, it should be noted that: the above only for the preferred embodiments of the present application and does not limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A wellhead crude oil production metering device, comprising a workbench (1), characterized in that: A separation box (14) is fixedly connected to the outside of the workbench (1). Multiple heating components are provided on the outside of the separation box (14). An oil extraction component is provided on the inner side of the end of the separation box (14). An oil conveying and weighing component is provided at the other end of the separation box (14). A gas separation component is provided on the top of the separation box (14). A filter and water extraction component is provided on the inner side of the bottom of the separation box (14). The oil pumping assembly includes a first pipe (10), one end of which is fixedly connected to the inner side of the separation box (14), and the other end of the first pipe (10) is fixedly connected to a connecting assembly (26), which is connected to the output end of the wellhead crude oil. A first oil pump (2) is fixedly connected in the middle of the first pipe (10), and the first oil pump (2) is located on the outside of the workbench (1). A deceleration valve (3) is provided in the middle of the end of the first pipe (10) near the separation box (14).

2. The wellhead crude oil production metering device according to claim 1, characterized in that: The gas separation assembly includes a second pipe (11), which is fixedly connected to the top inner side of the separation box (14). The other end of the second pipe (11) is fixedly connected to a gas storage tank (8). A vacuum pump (15) is provided in the middle of the second pipe (11), which is fixedly connected to the outside of the separation box (14). A connecting seat (16) is provided on the outside of the workbench (1), and the gas storage tank (8) is slidably connected to the inside of the connecting seat (16).

3. The wellhead crude oil production metering device according to claim 1, characterized in that: The filtration and pumping assembly includes a filter pipe (18), which is fixedly connected to the bottom inner side of the separation box (14). Multiple filter screens (19) are provided inside the filter pipe (18). A connecting funnel (20) is fixedly connected to the bottom of the filter pipe (18), and a valve assembly (21) is fixedly connected to the bottom outer side of the connecting funnel (20).

4. The wellhead crude oil production metering device according to claim 3, characterized in that: The filter pumping assembly also includes a pipe three (12), the end of which is fixedly connected to the bottom of the connecting funnel (20), a water tank (23) is fixedly connected to the outside of the workbench (1), the other end of the pipe three (12) is fixedly connected to the inside of the water tank (23), and a pump (22) is provided in the middle of the pipe three (12).

5. The wellhead crude oil production metering device according to claim 1, characterized in that: The oil conveying and weighing assembly includes a pipe four (13), which is fixedly connected to the inside of the separation box (14). The other end of the pipe four (13) is fixedly connected to an oil storage tank (4). An oil pump two (24) is provided in the middle of the pipe four (13), and the oil pump two (24) is fixedly connected to the outside of the workbench (1).

6. The wellhead crude oil production metering device according to claim 5, characterized in that: The oil weighing assembly also includes multiple bases (25), which are fixedly connected to the outside of the workbench (1). Weighing devices (6) are fixedly connected to the outside of the multiple bases (25). The oil storage tank (4) is fixedly connected to the outside of the middle part of the weighing device (6). A display (7) is fixedly connected to the outside of the end of the weighing device (6).

7. The wellhead crude oil production metering device according to claim 1, characterized in that: The heating assembly includes a heating box (5), which is fixedly connected to the outside of the separation box (14). Heating wire assemblies (17) are provided on the inner sides of both ends of the heating box (5).

8. The wellhead crude oil production metering device according to claim 5, characterized in that: Both the oil storage tank (4) and the weighing device (6) are fixedly connected to an external pipe (9) on the inner side of the middle part, and a valve assembly (21) is also fixedly connected to the inner side of the end of the external pipe (9).

Images