阅读说明：本技术 一种油气混输方法以及装置 (Oil-gas mixed transportation method and device ) 是由 李牧坤 林忠灿 齐园园 林本常 于 2019-11-21 设计创作，主要内容包括：本申请提供一种油气混输方法以及装置,包括三角转子压缩机、驱动机构和喂油泵,所述三角转子压缩机包括三角转子、第一入料口、第二入料口和排出口,所述第一入料口与油井的伴生气管线相连接,所述第二入料口通过管道与所述喂油泵的输出端相连接,所述喂油泵的输入端与油井的采出液管线相连接,所述排出口与油井的外输油管线相连接,所述驱动机构与三角转子的中心轴传动连接从而驱动所述三角转子转动。(The application provides an oil gas thoughtlessly defeated method and device, including triangle rotor compressor, actuating mechanism and oil feed pump, triangle rotor compressor includes triangle rotor, first pan feeding mouth, second pan feeding mouth and discharge port, first pan feeding mouth is connected with the associated gas pipeline of oil well, the second pan feeding mouth through the pipeline with the output of oil feed pump is connected, the input of oil feed pump is connected with the produced liquid pipeline of oil well, the discharge port is connected with the outer oil pipeline of oil well, thereby actuating mechanism is connected the drive with the center pin transmission of triangle rotor the triangle rotor rotates.)

1. An oil-gas mixture transportation method is characterized in that associated gas from an oil well enters a first chamber (7) of a triangular rotor compressor (10) through a first feeding port (4) of the triangular rotor compressor (10), a central shaft (3) of the triangular rotor compressor (10) drives a triangular rotor (2) of the triangular rotor compressor (10) to rotate eccentrically, and the first chamber (7) gradually increases in volume during rotation of the triangular rotor (2) and forms an associated gas suction process;

the associated gas in the first chamber (7) and the first chamber (7) move towards the second feeding port (5) of the triangular rotor compressor (10) together, and the volume of the first chamber (7) is gradually reduced so that the associated gas is compressed to form a gas compression process;

the first chamber (7) is changed into a second chamber (8) of the triangular rotor compressor (10), and oil from an oil well enters the second chamber (8) through a second feeding port (5) to form a liquid inlet process;

the second chamber (8) moves towards the discharge port (6) of the triangular rotor compressor (10) and is gradually expanded, and the associated gas and the oil are mixed in the first chamber (8) to form an oil-gas mixture, so that an oil-gas mixing process is formed;

the oil-gas mixture is discharged through the discharge port (6), and the triangular rotor (2) provides discharge pressure under the action of the driving mechanism (14) during discharge, so that a pressurization discharge process is formed.

2. The oil-gas mixture transportation method according to claim 1, characterized in that the outer gear ring (31) of the central shaft (3) is meshed with the inner gear ring (24) of the triangular rotor (2), and the central shaft (3) is in driving connection with a driving mechanism (14) so as to drive the triangular rotor (2) to move.

3. An oil-gas mixed transportation device is characterized by comprising a triangular rotor compressor (10), a driving mechanism (14) and an oil feeding pump (13), wherein the triangular rotor compressor (10) comprises a triangular rotor (2), a first feeding port (4), a second feeding port (5) and a discharge port (6), the first feeding port (4) is connected with an associated gas pipeline (16) of an oil well so as to enable associated gas from the oil well to enter the triangular rotor compressor (10) through the first feeding port (4), the second feeding port (5) is connected with the output end of the oil feeding pump (13) through a pipeline, the input end of the oil feeding pump (13) is connected with a produced liquid pipeline (17) of the oil well, and the oil from the oil well is conveyed into the triangular rotor compressor (10) through the produced liquid pipeline (17) and the oil feeding pump (13) to be mixed with the associated gas to obtain an oil-gas mixture, the discharge port (6) is connected with an external oil conveying pipeline (15) of the oil well so as to carry out oil-gas mixed conveying on the oil-gas mixture, and the driving mechanism (14) is in transmission connection with a central shaft (3) of the triangular rotor (2) so as to drive the triangular rotor (2) to rotate.

4. The oil-gas mixture transportation device according to claim 3, further comprising a stop valve (11) and a first ball valve (181), wherein two ends of the stop valve (11) are respectively connected with the second feeding port (5) and the output end of the oil feeding pump (13) through pipelines, and two ends of the first ball valve (181) are respectively connected with the produced liquid pipeline (17) and the input end of the oil feeding pump (13).

5. The oil-gas mixing transportation device according to claim 3, characterized by further comprising a flow meter (12) and a second ball valve (182), wherein one end of the flow meter (12) is connected with the first inlet port (4) through a pipeline, the other end of the flow meter (12) is connected with one end of the second ball valve (182) through a pipeline, and the other end of the second ball valve (182) is connected with the associated gas pipeline (16).

6. The oil-gas mixture transportation device according to claim 3, further comprising a check valve (19) and a third ball valve (183), wherein one end of the check valve (19) is connected with the external oil transportation pipeline (15), the other end of the check valve (19) is connected with one end of the third ball valve (183) through a pipeline, and the other end of the third ball valve (183) is connected with the discharge port (6) through a pipeline.

7. The oil-gas mixture transport device according to claim 3, wherein the drive mechanism (14) is an electric motor, a diesel engine or a gasoline engine.

8. The oil-gas mixing transportation device according to claim 3, wherein the triangle rotor compressor (10) comprises a cylinder body (1), a central shaft (3) is arranged in the cylinder body (1), the triangle rotor (2) is rotatably mounted on the central shaft (3), the central shaft (3) is connected with the driving mechanism (14) so as to drive the triangle rotor (2) to rotate in the cylinder body (1), the first feeding port (4) and the discharge port (6) are arranged on one side of the cylinder body (1), and the second feeding port (5) is arranged on the other side of the cylinder body (1).

9. The oil-gas mixture transportation device according to claim 8, wherein the triangular rotor (2) eccentrically rotates in the cylinder body (1) with the central shaft (3) as a center, so that a first chamber (7), a second chamber (8) and a third chamber (9) are formed in the cylinder body (1), the first chamber (7) is arranged corresponding to the first feeding port (4), the second chamber (8) is arranged corresponding to the second feeding port (5), and the third chamber (9) is arranged corresponding to the discharge port (6).

10. The oil-gas mixture transportation device according to claim 8, wherein the triangular rotor (2) comprises a rotor body (21), three side walls of the rotor body (21) are respectively provided with a curved surface linearly attached to the inner wall of the cylinder body (1) so that the rotor body (21) is linearly attached to the inner wall of the cylinder body (1) in the rotation process, three side walls of the rotor body (21) are respectively provided with a pit portion (23), and the pit portions (23) and the cylinder body (1) jointly form a space of three chambers.

11. The oil-gas mixture transport device according to claim 8, characterized in that an outer gear ring (31) is arranged on the outer wall of the central shaft (3), an inner gear ring (24) is arranged on the inner wall of the central hole (22), and the outer gear ring (31) and the inner gear ring (24) are meshed with each other when the triangular rotor (2) rotates.

12. The oil-gas mixture transfer device according to claim 9, wherein the ratio of the number of teeth of the inner ring gear (24) to the outer ring gear (31) is 3: 2;

the cylinder body (1) of the triangular rotor compressor (10) is of an 8-shaped structure.

Technical Field

The application relates to the field of petroleum and natural gas development, in particular to an oil-gas mixed transportation method and device.

Background

With the environment-friendly situation that the resource of the petroleum associated gas and the oil-gas exploitation are more and more strict, the low-pressure and small amount of wellhead associated gas which is not paid attention to before is not allowed to be discharged and combusted in a rough manner, so that the development of the oil-gas mixed transportation technology in China is promoted, wherein the oil-gas mixed transportation pump is a key device and is required to have the performances of a pump and a compressor, however, the devices in the prior art such as a screw pump, a synchronous rotation gas-liquid mixed transportation pump, a swing rotor gas-liquid mixed transportation pump and the like cannot be considered at the same time.

The oil well produced liquid lifted to the ground from each oil well needs to be collected to a gathering and transportation station, so that the processes of metering, heating, warming, transferring and the like are completed, in the process, associated gas in the oil well produced liquid can be separated from crude oil to cause resource waste, and therefore, before continuing transferring to a downstream relay station or a centralized processing station, the problem that how to guarantee oil-gas mixed transferring becomes urgent to be solved is solved.

Disclosure of Invention

The application aims to overcome the defects of the prior art and provides an oil-gas mixed transportation method and device.

In order to achieve the purpose, the following technical scheme is adopted in the application:

an oil-gas mixed transportation method is characterized in that associated gas from an oil well enters a first chamber of a triangular rotor compressor through a first feeding port of the triangular rotor compressor, a central shaft of the triangular rotor compressor drives a triangular rotor of the triangular rotor compressor to rotate eccentrically, and the volume of the first chamber is gradually increased in the rotating process of the triangular rotor to form an associated gas suction process;

the associated gas in the first chamber and the first chamber move towards a second feeding port of the triangular rotor compressor together, and the volume of the first chamber is gradually reduced, so that the associated gas is compressed to form a gas compression process;

the first chamber is converted into a second chamber of the triangular rotor compressor, and petroleum from an oil well enters the second chamber through a second feeding port to form a liquid inlet process;

the second chamber moves towards the discharge port of the triangular rotor compressor and gradually expands, and the associated gas and the petroleum are mixed in the first chamber to form an oil-gas mixture, so that an oil-gas mixing process is formed;

the oil-gas mixture is discharged through the discharge port, and the triangular rotor provides discharge pressure under the action of the driving mechanism during discharge, so that a pressurization discharge process is formed.

Optionally, the outer gear ring of the central shaft is engaged with the inner gear ring of the triangular rotor, and the central shaft is in driving connection with the driving mechanism so as to drive the triangular rotor to move.

The application also provides an oil-gas mixed transportation device, which comprises a triangular rotor compressor, a driving mechanism and an oil feeding pump, the triangular rotor compressor comprises a triangular rotor, a first feeding port, a second feeding port and a discharge port, the first feeding port is connected with an associated gas pipeline of an oil well so as to feed the associated gas from the oil well into the triangular rotor compressor through the first feeding port, the second feeding port is connected with the output end of the oil feeding pump through a pipeline, the input end of the oil feeding pump is connected with a produced liquid pipeline of an oil well, petroleum from the oil well is conveyed into the triangular rotor compressor through the produced liquid pipeline and the oil feeding pump to be mixed with the associated gas to obtain an oil-gas mixture, the discharge port is connected with an external oil transportation pipeline of the oil well so as to carry out oil-gas mixed transportation on the oil-gas mixture, the driving mechanism is in transmission connection with a central shaft of the triangular rotor so as to drive the triangular rotor to rotate.

Optionally, the oil-gas mixed transportation device further comprises a stop valve and a first ball valve, two ends of the stop valve are respectively connected with the second feeding port and the output end of the oil feeding pump through pipelines, and two ends of the first ball valve are respectively connected with the produced liquid pipeline and the input end of the oil feeding pump.

Optionally, the oil-gas mixed transportation device further comprises a flow meter and a second ball valve, wherein one end of the flow meter is connected with the first feeding port through a pipeline, the other end of the flow meter is connected with one end of the second ball valve through a pipeline, and the other end of the second ball valve is connected with the associated gas pipeline.

Optionally, the oil-gas mixed transportation device further comprises a check valve and a third ball valve, one end of the check valve is connected with the external oil transportation pipeline, the other end of the check valve is connected with one end of the third ball valve through a pipeline, and the other end of the third ball valve is connected with the discharge port through a pipeline.

Optionally, the driving mechanism is an electric motor, a diesel engine or a gasoline engine.

Optionally, the three-lobe rotor compressor includes a cylinder body, a central shaft is disposed in the cylinder body, the three-lobe rotor is rotatably mounted on the central shaft, the central shaft is connected with the driving mechanism so as to drive the three-lobe rotor to rotate in the cylinder body, the first feeding port and the discharge port are disposed on one side of the cylinder body, and the second feeding port is disposed on the other side of the cylinder body.

Optionally, the triangular rotor eccentrically rotates in the cylinder body with the central shaft as a center, so that a first chamber, a second chamber and a third chamber are formed in the cylinder body, the first chamber is corresponding to the first feeding port, the second chamber is corresponding to the second feeding port, and the third chamber is corresponding to the discharge port.

Optionally, the triangular rotor includes a rotor body, three side walls of the rotor body are respectively provided with a curved surface linearly attached to an inner wall of the cylinder body, so that the rotor body rotates in the process of linearly attaching to the inner wall of the cylinder body, three side walls of the rotor body are respectively provided with a pit portion, and the pit portion and the cylinder body jointly form a space of three chambers.

Optionally, an outer gear ring is arranged on the outer wall of the central shaft, an inner gear ring is arranged on the inner wall of the central hole, and the outer gear ring and the inner gear ring are meshed with each other when the triangular rotor rotates.

Optionally, the ratio of the number of teeth of the inner gear ring to the number of teeth of the outer gear ring is 3:2, and the cylinder body of the triangular rotor compressor is of an 8-shaped structure.

The oil-gas mixed transportation method and the oil-gas mixed transportation device have the advantages that the triangular rotor compressor which takes the driving mechanism as the power source is arranged, associated gas and oil of an oil well are in the triangular rotor compressor, so that an oil-gas mixture is obtained, then oil-gas mixed transportation is carried out through the discharge port and the outer oil transportation pipeline, the triangular rotor compressor has the performance of the pump and the compressor, the triangular rotor compressor can efficiently and reliably realize the mixed transportation of the associated gas and the oil, and therefore the resource waste caused by the separation of the associated gas and crude oil in oil well produced liquid is avoided.

Drawings

FIG. 1 is a process flow diagram of an oil-gas mixture transportation device according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a suction process of a triangular rotor compressor according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a gas compression process of a three-lobe compressor according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a liquid inlet process of a triangular rotor compressor according to an embodiment of the application;

FIG. 5 is a schematic structural diagram of an oil-gas mixing process of the triangular rotor compressor according to the embodiment of the application;

fig. 6 is a schematic structural diagram of a triangular rotor compressor boost discharge process according to an embodiment of the present application.

Reference numerals

1-cylinder body, 2-triangular rotor, 3-central shaft, 4-first inlet, 5-second inlet, 6-outlet, 7-first chamber, 8-second chamber, 9-third chamber, 10-triangular rotor compressor, 11-stop valve, 12-flowmeter, 13-oil feeding pump, 14-driving mechanism, 15-external oil conveying pipeline, 16-associated gas pipeline, 17-produced liquid pipeline, 181-first ball valve, 182-second ball valve, 183-third ball valve, 19-one-way valve, 21-rotor body, 22-central hole, 23-pit part, 24-internal gear ring and 31-external gear ring.

Detailed Description

The following description of specific embodiments of the present application refers to the accompanying drawings.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships between relevant portions, and do not limit absolute positions of the relevant portions.

In this document, "first", "second", and the like are used only for distinguishing one from another, and do not indicate the degree and order of importance, the premise that each other exists, and the like.

In this context, "equal", "same", etc. are not strictly mathematical and/or geometric limitations, but also include tolerances as would be understood by a person skilled in the art and allowed for manufacturing or use, etc.

Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.

The application provides an oil gas thoughtlessly defeated device, as shown in fig. 1 and fig. 2, including triangle rotor compressor 10, actuating mechanism 14 and oil feed pump 13, triangle rotor compressor 10 includes triangle rotor 2, first pan feeding mouth 4, second pan feeding mouth 5 and discharge port 6, thereby first pan feeding mouth 4 is connected with the associated gas pipeline 16 of oil well and passes through with the associated gas that comes from the oil well first pan feeding mouth 4 gets into in the triangle rotor compressor 10, the principal ingredients of associated gas include dry gas, liquefied petroleum gas and stable light hydrocarbon etc. that use methane and ethane to be main, second pan feeding mouth 5 through the pipeline with the output of oil pump 13 is connected, the input of oil feed pump 13 is connected with the produced fluid pipeline 17 of oil well, the oil that comes from the oil well is carried to through produced fluid pipeline 17 and oil feed pump 13 in the triangle rotor compressor 10 with the associated gas mixes and obtains oil gas mixture, the discharge port 6 is connected with an external oil conveying pipeline 15 of the oil well so as to carry out oil-gas mixture conveying, and the driving mechanism 14 is in transmission connection with the central shaft 3 of the triangular rotor 2 so as to drive the triangular rotor 2 to rotate.

Alternatively, the drive mechanism 14 may be an electric motor, a diesel engine, or a gasoline engine.

The utility model provides an oil gas thoughtlessly defeated device is through setting up the triangle rotor compressor 10 that uses actuating mechanism 14 as the power supply, is in the associated gas and the oil of oil well thereby mix in the triangle rotor compressor 10 and obtain oil-gas mixture, then carry out the oil gas thoughtlessly defeated through discharge port 6 and outer oil pipeline 15, the triangle rotor compressor 10 of this application has the performance of pump and compressor concurrently, utilizes the thoughtlessly defeated of realization associated gas and oil that triangle rotor compressor 10 can be high-efficient reliable to the resource waste that associated gas and crude oil separation in the oil well produced liquid lead to has been avoided.

In an embodiment of the present application, as shown in fig. 1, the oil-gas mixture transportation device further includes a stop valve 11 and a first ball valve 181, two ends of the stop valve 11 are respectively connected to the output ends of the second material inlet 5 and the oil feed pump 13 through pipelines for controlling the pipeline to be cut off, and two ends of the first ball valve 181 are respectively connected to the production fluid pipeline 17 and the input end of the oil feed pump 13.

In another embodiment of the present application, as shown in fig. 1, the oil-gas mixture transportation device further includes a flow meter 12 and a second ball valve 182, one end of the flow meter 12 is connected to the first material inlet 4 through a pipeline, the other end of the flow meter 12 is connected to one end of the second ball valve 182 through a pipeline, the other end of the second ball valve 182 is connected to the associated gas pipeline 16, and the associated gas from the oil well sequentially passes through the second ball valve 182 and the flow meter 12 for flow rate monitoring and enters the three-lobe compressor 10.

In another embodiment of the application, as shown in fig. 1, the oil-gas mixture transportation device further includes a check valve 19 and a third ball valve 183, one end of the check valve 19 is connected with the external oil transportation pipeline 15, the other end of the check valve 19 is connected with one end of the third ball valve 183 through a pipeline, the other end of the third ball valve 183 is connected with the discharge port 6 through a pipeline, via the oil-gas mixture compressed by the delta rotor compressor 10 sequentially passes through the third ball valve 183 and the check valve 19 and is collected to the gathering station through the external oil transportation pipeline 15, and the check valve 19 is used for preventing the oil-gas mixture from flowing back.

In another embodiment of the present application, as shown in fig. 2, the triangular rotor compressor 10 includes a cylinder body 1, a central shaft 3 is disposed in the cylinder body 1, the triangular rotor 2 is rotatably mounted on the central shaft 3, the central shaft 3 is connected with the driving mechanism 14 to drive the triangular rotor 2 to rotate in the cylinder body 1, the first material inlet 4 and the discharge outlet 6 are disposed on one side of the cylinder body 1, and the second material inlet 5 is disposed on the other side of the cylinder body 1.

In the above embodiment, as shown in fig. 3 to 6, the triangular rotor 2 eccentrically rotates within the cylinder 1 around the central shaft 3, so as to form a first chamber 7, a second chamber 8 and a third chamber 9 inside the cylinder 1, the first chamber 7 is disposed corresponding to the first material inlet 4, the second chamber 8 is disposed corresponding to the second material inlet 5, and the third chamber 9 is disposed corresponding to the discharge port 6.

In the above embodiment, as shown in fig. 3, the triangular rotor 2 includes a rotor body 21, curved surfaces linearly attached to the inner wall of the cylinder 1 are respectively provided on three side walls of the rotor body 21, so that the rotor body 21 is always kept in linear fit with the inner wall of the cylinder 1 in the rotating process, the three side walls of the rotor body 21 are respectively provided with a concave part 23, the concave parts 23 and the cylinder body 1 jointly determine the space of three chambers, the compression ratios of the three chambers can thus be controlled by adjusting the volume of the well 23, the larger the volume of the well 23 and the smaller the compression ratio of the three chambers, a central hole 22 is formed in the middle of the rotor body 21, and the central hole 22 is eccentrically matched with the central shaft 3, so that the rotor body 21 rotates around the central shaft 3 while revolving around the central shaft, and the rotor body 21 rotates around itself.

In one embodiment of the present application, as shown in fig. 4, an outer gear ring 31 is provided on an outer wall of the central shaft 3, an inner gear ring 24 is provided on an inner wall of the central hole 22, and the outer gear ring 31 and the inner gear ring 24 are engaged with each other when the triangular rotor 2 rotates.

Optionally, the ratio of the number of teeth of the inner ring gear 24 to the outer ring gear 31 is 3: 2.

Optionally, the cylinder body 1 of the triangular rotor compressor 10 is of an 8-shaped structure.

The application also provides an oil-gas mixed transportation method, as shown in fig. 2, associated gas from an oil well enters a first chamber 7 of the triangular rotor compressor 10 through a first feeding port 4, a central shaft 3 of the triangular rotor compressor 10 drives a triangular rotor 2 to rotate eccentrically, and the volume of the first chamber 7 gradually increases during the rotation of the triangular rotor 2 and an associated gas suction process is formed;

as shown in fig. 3, the associated gas in the first chamber 7 moves together with the first chamber 7 toward the second inlet 5, and the volume of the first chamber 7 is gradually reduced so that the associated gas is compressed, thereby forming a gas compression process;

as shown in fig. 4, the first chamber 7 is changed into a second chamber 8, and oil from the oil well enters the second chamber 8 through a second feeding port 5 to form a liquid inlet process;

as shown in fig. 5, the second chamber 8 moves towards the discharge port 6 and gradually expands, and the associated gas and the oil are mixed in the second chamber 8 to form an oil-gas mixture, so as to form an oil-gas mixing process;

as shown in fig. 6, the oil-gas mixture is discharged through the discharge port 6, and the triangular rotor 2 provides discharge pressure under the action of the driving mechanism 14 during discharge, so that a pressurized discharge process is formed.

In one embodiment of the present application, the outer gear ring 31 of the central shaft 3 is tightly engaged with the inner gear ring 24 of the triangular rotor 2, the central shaft 3 is in driving connection with the driving mechanism 14 to drive the triangular rotor 2 to move, and the flow rate and the pumping amount of the associated gas can be controlled by adjusting the driving mechanism 14.

Alternatively, the drive mechanism 14 may be an electric motor, a diesel engine, or a gasoline engine.

This application is through using motor, diesel engine or gasoline engine as the power supply, the drive thereby the center pin 3 drives 2 eccentric rotations of triangle rotor for the triangle rotor compressor 10 of this application can use in the oil gas of the associated gas of oil well and oil gas thoughtlessly defeated field, has realized stable, reliable and efficient oil gas thoughtlessly defeated.

The preferred embodiments and examples of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the embodiments and examples described above, and various changes can be made within the knowledge of those skilled in the art without departing from the concept of the present application.