High-gas-content double-cavity oil-gas mixed conveying device

Abstract

The utility model discloses a double-cavity oil-gas mixed conveying device for conveying high gas content, which relates to the field of oil-gas mixed conveying and comprises a base, a first oil-gas separator is arranged at the top of the base, a screw pump is fixedly connected to the left side of the top of the base, and a compressor is fixedly connected to the right side of the top of the base. A water outlet in the bottom of the first oil-gas separator communicates with a conveying pipe, the end, away from the first oil-gas separator, of the conveying pipe communicates with a feeding port of the screw pump, a gas outlet in the top of the first oil-gas separator communicates with an exhaust pipe, and the right end of the exhaust pipe communicates with a second oil-gas separator. Oil gas is pressurized, conveyed high-content gas is conveyed and pressurized through the compressor, the problem that the high-content gas is conveyed through a traditional screw pump is solved, closed conveying of multiple materials is achieved, environmental pollution is avoided, and therefore the problems in the background technology are solved.

Description

Technical Field

[0001] The utility model relates to the field of oil-gas mixed transportation, in particular to a double-cavity oil-gas mixed transportation device for conveying high-gas content. Background Art

[0002] The oil and gas mixed flow pump is the main conveying equipment used in the oil field gathering and transportation process. It mainly transports crude oil containing gas, water, sand, etc. to achieve centralized purification, separation and storage of crude oil. In addition, it can also reduce wellhead pressure and increase single well or regional production. The oil and gas mixed flow pumps currently in production are mainly divided into single-screw, twin-screw, three-screw pumps and plunger pumps according to their structural forms.

[0003] The plunger pumps currently used in oil fields have problems such as too small displacement and low pump efficiency when the gas content is large. The mainstream product for oil and gas mixed transportation in oil fields is the screw pump, which is often used for external transportation and closed oil unloading. However, it also has some problems. First, when the screw pump is used to transport high gas content, the liquid will be interrupted for a short time, damaging the stator, rotor, and mechanical seal. In addition, the pump efficiency is reduced when the gas content is high, resulting in a larger pump model and increased equipment investment. Most of the current fully functional oil and gas mixed transportation devices only use a single pump for transportation, and also need to be equipped with various protective lubrication devices. They are bulky and expensive, which is not conducive to promotion.

[0004] In view of the above problems, the utility model provides a double-cavity oil-gas mixed transmission device with high gas content. Utility Model Content

[0005] The purpose of the utility model is to provide a double-chamber oil and gas mixed transportation device with high gas content. By pressurizing the oil and gas, the high-content gas to be transported is conveyed and pressurized by a compressor, thereby preventing the problem of high-gas transportation by traditional screw pumps, realizing the closed transportation of various materials, avoiding environmental pollution, and thus solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-chamber oil-gas mixed transportation device with high gas content, comprising a base, a first oil-gas separator is arranged on the top of the base, a screw pump is fixedly connected to the left side of the top of the base, and a compressor is fixedly connected to the right side of the top of the base, a water outlet at the bottom of the first oil-gas separator is connected to a delivery pipe, an end of the delivery pipe away from the first oil-gas separator is connected to a feed port of the screw pump, an air outlet at the top of the first oil-gas separator is connected to an exhaust pipe, the right end of the exhaust pipe is connected to a second oil-gas separator, and the exhaust port on the front side of the second oil-gas separator is connected to the suction port of the compressor.

[0007] Furthermore, a control cabinet is fixedly connected to the front side of the top of the base, and a gate valve is sleeved on the surface of the delivery pipe.

[0008] Furthermore, the bottoms of both sides of the first oil-gas separator are fixedly connected to support frames, and the bottoms of the support frames are fixedly connected to the base.

[0009] Furthermore, the left side of the first oil-gas separator is connected with a feed pipe, and the surface of the exhaust pipe is sleeved with a one-way valve.

[0010] Furthermore, the right side of the top of the compressor is connected to an air supply pipe, and the left end of the screw pump is connected to an oil and water discharge pipe.

[0011] Furthermore, the screw pump includes an energy-saving explosion-proof motor, a reducer, a pump body, a universal joint, an intermediate shaft, a rubber stator and a metal rotor, and the bottom of the front side of the first oil-gas separator and the second oil-gas separator are fixedly connected to a pressure transmitter.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model provides a double-chamber oil-gas mixed transport device for conveying high-gas content, which allows the oil-gas-water mixture to enter a first oil-gas separator and a second oil-gas separator, and uses the first oil-gas separator and the second oil-gas separator to perform double separation to separate the oil, water and gas, so that the gas enters the compressor for pressurization, while the oil and water are conveyed by a screw pump, and the screw pump and the compressor jointly undertake the conveying. By utilizing this double-conveying structure, the entire system can operate efficiently, which solves the problem of traditional screw pumps conveying high-gas content, realizes the closed conveying of various materials and avoids environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: 1. Base; 2. First oil-gas separator; 3. Screw pump; 4. Compressor; 5. Delivery pipe; 6. Exhaust pipe; 7. Second oil-gas separator; 8. Control cabinet; 9. Gate valve; 10. Feed pipe; 11. Check valve; 12. Air supply pipe; 13. Oil-water discharge pipe; 14. Pressure transmitter. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In order to solve the technical problem that the conventional screw pump 3 will be interrupted when delivering liquid in the high gas chamber, thus causing the screw pump 3 to be damaged, such as Figure 1As shown, the following preferred technical solutions are provided:

[0018] A device for conveying a high-gas-content double-chamber oil-gas mixture comprises a base 1, a first oil-gas separator 2 is arranged on the top of the base 1, a screw pump 3 is fixedly connected to the left side of the top of the base 1, a compressor 4 is fixedly connected to the right side of the top of the base 1, a water outlet at the bottom of the first oil-gas separator 2 is connected to a conveying pipe 5, one end of the conveying pipe 5 away from the first oil-gas separator 2 is connected to the feed port of the screw pump 3, the air outlet at the top of the first oil-gas separator 2 is connected to an exhaust pipe 6, the right end of the exhaust pipe 6 is connected to a second oil-gas separator 7, and the exhaust port on the front side of the second oil-gas separator 7 is connected to the suction port of the compressor 4.

[0019] Specifically, the oil-gas-water mixture is allowed to enter the first oil-gas separator 2 and the second oil-gas separator 7, and the first oil-gas separator 2 and the second oil-gas separator 7 are used to perform two separations to separate the oil, water and gas, so that the gas enters the compressor 4 for pressurization, while the oil and water are transported by the screw pump 3. The screw pump 3 and the compressor 4 jointly undertake the transportation. By utilizing this dual-transportation structure, the entire system can operate efficiently, which solves the problem of high gas content in the traditional screw pump 3 transportation, realizes the closed transportation of various materials and avoids environmental pollution.

[0020] In order to solve the technical problems of the whole equipment automation control and the unstable support of the first oil-gas separator 2, as Figure 1 As shown, the following preferred technical solution is provided: a control cabinet 8 is fixedly connected to the front side of the top of the base 1, a gate valve 9 is sleeved on the surface of the delivery pipe 5, the bottoms of both sides of the first oil-gas separator 2 are fixedly connected to support frames, the bottom of the support frame is fixedly connected to the base 1, the left side of the first oil-gas separator 2 is connected to a feed pipe 10, and a one-way valve 11 is sleeved on the surface of the exhaust pipe 6.

[0021] Specifically, the entire device can be automatically controlled through the control cabinet 8, the opening and closing of the delivery pipe 5 can be controlled through the gate valve 9, the supporting effect of the first oil-gas separator 2 can be improved through the support frame, and the gas backflow can be prevented through the one-way valve 11.

[0022] In order to solve the technical problem that the internal pressure of the first oil-gas separator 2 and the second oil-gas separator 7 cannot be monitored in real time, as Figure 1 As shown, the following preferred technical solutions are provided: the right side of the top of the compressor 4 is connected to an air supply pipe 12, the left end of the screw pump 3 is connected to an oil-water discharge pipe 13, the screw pump 3 includes an energy-saving explosion-proof motor, a reducer, a pump body, a universal joint, an intermediate shaft, a rubber stator and a metal rotor, and the bottom of the front side of the first oil-gas separator 2 and the second oil-gas separator 7 are fixedly connected to a pressure transmitter 14.

[0023] Specifically, the pressurized gas can be discharged through the air supply pipe 12, the oil-water mixture can be discharged through the oil-water discharge pipe 13, and the pressure conditions in the first oil-gas separator 2 and the second oil-gas separator 7 can be monitored in real time through the pressure transmitter 14.

[0024] Working principle: When in use, two pressure transmitters 14 are used to monitor the pressure in the first oil-gas separator 2 and the second oil-gas separator 7, and the entire equipment is controlled by the control cabinet 8. The oil-gas-water mixture enters the first oil-gas separator 2 through the feed pipe 10, and is separated by the first oil-gas separator 2 and the second oil-gas separator 7, so that the gas enters the compressor 4 for pressurization, while the oil and water enter the screw pump 3, and the gas and oil and water are transported to the air supply pipe 12 and the oil-water discharge pipe 13 respectively. Both play their respective roles, preventing the problem of high gas content in the traditional screw pump 3, improving efficiency, reducing equipment models, reducing pump specifications, and reducing equipment investment.

[0025] In summary: the double-chamber oil-gas mixed transportation device with high gas content solves the problem of high gas content transportation by the traditional screw pump 3 through the coordinated use of the first oil-gas separator 2, the screw pump 3, the compressor 4, the delivery pipe 5, the exhaust pipe 6 and the second oil-gas separator 7, and realizes the closed transportation of various materials to avoid environmental pollution.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-chamber oil-gas mixed transport device with high gas content, comprising a base (1), characterized in that: A first oil-gas separator (2) is arranged on the top of the base (1), a screw pump (3) is fixedly connected to the left side of the top of the base (1), a compressor (4) is fixedly connected to the right side of the top of the base (1), a water outlet at the bottom of the first oil-gas separator (2) is connected to a delivery pipe (5), an end of the delivery pipe (5) away from the first oil-gas separator (2) is connected to a feed port of the screw pump (3), an air outlet at the top of the first oil-gas separator (2) is connected to an exhaust pipe (6), the right end of the exhaust pipe (6) is connected to a second oil-gas separator (7), and an exhaust port on the front side of the second oil-gas separator (7) is connected to a suction port of the compressor (4).

2. A dual-chamber oil-gas mixed transport device with high gas content according to claim 1, characterized in that: A control cabinet (8) is fixedly connected to the front side of the top of the base (1), and a gate valve (9) is sleeved on the surface of the delivery pipe (5).

3. The double-chamber oil-gas mixed transport device with high gas content according to claim 1 is characterized in that: The bottoms of both sides of the first oil-gas separator (2) are fixedly connected to support frames, and the bottoms of the support frames are fixedly connected to the base (1).

4. The double-chamber oil-gas mixed transport device with high gas content according to claim 1 is characterized in that: The left side of the first oil-gas separator (2) is connected to a feed pipe (10), and a one-way valve (11) is sleeved on the surface of the exhaust pipe (6).

5. The double-chamber oil-gas mixed transport device with high gas content according to claim 1 is characterized in that: The right side of the top of the compressor (4) is connected to an air supply pipe (12), and the left end of the screw pump (3) is connected to an oil and water discharge pipe (13).

6. The double-chamber oil-gas mixed transport device with high gas content according to claim 1 is characterized in that: The screw pump (3) comprises an energy-saving explosion-proof motor, a reducer, a pump body, a universal joint, an intermediate shaft, a rubber stator and a metal rotor. The bottom of the front side of the first oil-gas separator (2) and the second oil-gas separator (7) are both fixedly connected to a pressure transmitter (14).

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