Carbon dioxide injection pump pry
By setting up drainage pipelines and return pipelines on the main pipeline of the carbon dioxide injection pump pry, the problem of liquid carbon dioxide gasification is solved, and the equipment is rapidly cooled down and normal operation is achieved.
Patent Information
- Application Number
- CN202420749834.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-11
AI Technical Summary
During the injection and oil flooding process of carbon dioxide, liquid carbon dioxide will instantly vaporize when it passes into the equipment, causing the equipment to fail to operate normally.
A carbon dioxide injection pump pry is designed. By connecting the exhaust pipe on the main pipeline, the first valve is closed before the carbon dioxide enters, the third valve is opened, and the carbon dioxide is passed into the air, and then the third valve is closed and the second valve is opened to allow the carbon dioxide to flow back to the front end of the high-pressure pump, and circulate through the high-pressure pump to quickly cool down to reduce the gasification of the carbon dioxide.
It effectively reduces the gasification of carbon dioxide and ensures that the equipment can quickly enter the working state and operate normally.
Smart Images
Figure CN222703092U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of transportation technology, in particular to a carbon dioxide injection pump skid. Background Art
[0002] At present, carbon dioxide injection flooding is an important field in the oil and gas industry. It is an effective way to increase oil recovery and alleviate global warming, and has considerable economic and social benefits. As a relatively popular means of flooding, carbon dioxide injection flooding is widely used in China.
[0003] It was found in actual use that when liquid carbon dioxide is injected into other equipment to be used through an injection device, since the interior of the injection device is at normal pressure and temperature at the beginning, the liquid carbon dioxide will instantly vaporize when it enters the injection device. As the pressure in the injection device gradually increases and the temperature gradually decreases, the carbon dioxide entered into the injection device will gradually liquefy, causing the initial equipment to be unable to operate normally. Utility Model Content
[0004] In view of the above problems, the utility model provides a carbon dioxide injection pump skid, comprising a main pipeline,
[0005] A high-pressure pump and a first valve are connected in series on the main pipe, wherein the first valve is located near the outlet end of the main pipe; and the high-pressure pump is located near the inlet end of the main pipe;
[0006] Connecting two ends of a return pipe to the main pipe located at two ends of the high-pressure pump;
[0007] A second valve is connected to the reflux pipe;
[0008] The main pipe is connected with an emptying pipe, the emptying pipe is located near the outlet end of the main pipe and at the inlet end of the first valve; the emptying pipe is located at the outlet end of the reflux pipe;
[0009] A third valve is connected to the exhaust pipeline.
[0010] Furthermore, it also includes a shielded pump, which is connected to the main pipe and is located at the inlet end of the return pipe.
[0011] Furthermore, at least one detection sensor is arranged on the main pipe, which is located at the outlet end of the high-pressure pump and / or the outlet end of the high-pressure pump and / or the inlet end of the shielded pump.
[0012] Furthermore, the detection sensor is a pressure sensor, and at least one pressure sensor is arranged on the main pipe to detect the pressure of the main pipe.
[0013] Further, the pressure sensor is arranged at the inlet end of the return pipe and / or the outlet end of the return pipe and / or the inlet end of the shielded pump.
[0014] Furthermore, the detection sensor is a temperature sensor, and at least one temperature sensor is arranged on the main pipe for detecting the temperature of the main pipe; the temperature sensor is arranged at the inlet end and / or outlet end of the reflux pipe.
[0015] Furthermore, a one-way valve is installed on the main pipe, and the one-way valve is located at the outlet end of the first valve.
[0016] Furthermore, it also includes a safety pressure relief pipeline, one end of which is connected to the high-pressure pump; a safety pressure relief valve is installed on the safety pressure relief pipeline; the other end of the safety pressure relief pipeline is connected to the exhaust pipeline and is located at the outlet end of the third valve.
[0017] Furthermore, the detection sensor is a pulsation damper, and at least one pulsation damper is arranged on the main pipe; the pulsation damper is arranged at the inlet end and / or outlet end of the high-pressure pump.
[0018] Furthermore, at least one fourth valve is arranged on the main pipe; the fourth valve is arranged at the inlet end and / or the outlet end of the canned motor pump.
[0019] The carbon dioxide injection pump skid of the utility model connects the exhaust pipeline to the main pipeline. Before the carbon dioxide is just introduced, the first valve is closed and the third valve is opened. Then the main pipeline is connected to introduce the carbon dioxide. After the carbon dioxide enters the main pipeline, the air in the main pipeline is squeezed out from the exhaust pipeline. Then the third valve is closed to exhaust the air in the main pipeline. After the air is exhausted, the second valve is opened to allow the gasified carbon dioxide that has just entered the main pipeline to flow back to the front end of the high-pressure pump and circulate under the action of the high-pressure pump. The main pipeline can be quickly cooled down and the temperature of the main pipeline can quickly reach the working temperature, thereby effectively reducing the gasification of carbon dioxide.
[0020] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It shows a schematic diagram of the position of the mechanism in the embodiment of the utility model;
[0023] Figure 2 It shows a front view of the injection pump skid in the embodiment of the utility model;
[0024] Figure 3 A top view of an injection pump skid in an embodiment of the utility model is shown.
[0025] In the figure, 1-main line; 2-high-pressure pump; 3-first valve; 4-shielded pump; 5-first pressure sensor; 6-third pressure sensor; 7-return pipe; 8-second valve; 9-second pressure sensor; 10-first temperature sensor; 11-second temperature sensor; 12-pulsation damper; 13-drain line; 14-third valve; 15-safety pressure relief line; 16-safety pressure relief valve; 17-check valve; 18-fourth shut-off valve a; 19-fourth shut-off valve b. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.
[0027] The following is combined with Figure 1-3 This application is described in further detail.
[0028] The present application embodiment discloses a carbon dioxide injection pump skid, referring to Figure 1-3 , including a main line 1, on which a high-pressure pump 2 and a first valve 3 are connected in series, and the first valve 3 is located near the outlet end of the main line 1; the high-pressure pump 2 is located near the inlet end of the main line 1; when in use, the carbon dioxide storage tank is connected to the inlet end of the main line 1, and the liquid carbon dioxide is pumped out through the high-pressure pump 2.
[0029] In the embodiment of the utility model, the two ends of the return pipe 7 are connected to the main pipe 1 located at the two ends of the high-pressure pump 2; the second valve 8 is connected to the return pipe 7; the main pipe 1 is connected to the emptying pipe 13, which is located near the outlet end of the main pipe 1 and located at the inlet end of the first valve 3; the emptying pipe 13 is located at the outlet end of the return pipe 7, and the third valve 14 is connected to the emptying pipe 13. Before injecting carbon dioxide into the main pipe 1, the first valve 3 is closed, the third valve 14 is opened, and then carbon dioxide is introduced into the main pipe 1. The carbon dioxide introduced into the main pipe 1 will gradually fill the main pipe 1, thereby discharging the air in the main pipe 1 from the emptying pipe 13, and after the air is discharged, the third valve 14 is closed.
[0030] In the embodiment of the utility model, before introducing carbon dioxide into the main pipeline 1, the first valve 3 is closed and the second valve 8 is opened; then carbon dioxide is introduced into the main pipeline 1. At the beginning, since the main pipeline 1 is at normal temperature and pressure, the carbon dioxide introduced into the main pipeline 1 will be gasified, and the gasified carbon dioxide will flow back to the front end of the high-pressure pump 2 from the return pipe 7; with the continuous pressurization of the shielding pump 4 and the continuous filling of carbon dioxide, the pressure in the main pipeline 1 increases rapidly and the carbon dioxide is liquefied, and the high-pressure pump 2 will circulate the carbon dioxide in the return pipe 7, thereby quickly reducing the working temperature of the main pipeline 1, so that the whole can quickly enter the working state.
[0031] The embodiment of the utility model further comprises a shielded pump 4, which is connected to the main pipeline 1 and is located at the inlet end of the return pipe 7. The shielded pump 4 is located at the inlet end of the high-pressure pump 2.
[0032] The detection sensor includes a pressure sensor, a temperature sensor and a pulsation damper.
[0033] In the embodiment of the utility model, at least one pressure sensor is arranged on the main pipeline 1 to detect the pressure of the main pipeline 1; the pressure sensor includes a first pressure sensor 5 and a third pressure sensor 6. The first pressure sensor 5 is located on the side of the shielded pump 4 close to the high-pressure pump 2, and the third pressure sensor 6 is located on the end of the shielded pump 4 close to the inlet of the main pipeline 1.
[0034] The first pressure sensor 5 and the third pressure sensor 6 are both electrically connected to the shielded pump 4. When in use, when the pressure in the main line 1 on the shielded pump 4 near the high-pressure pump 2 is low, the first pressure sensor 5 feeds back a signal to the system, and the system drives the shielded pump 4 to work, so that the carbon dioxide at the inlet end of the high-pressure pump 2 is in a liquid state, so that the high-pressure pump 2 can work normally. When the pressure at the inlet end of the main line 1 is low, the third pressure sensor 6 feeds back a signal to the system, and the system drives the shielded pump 4 to work to prevent the carbon dioxide at the inlet end of the high-pressure pump 2 from gasifying.
[0035] In the embodiment of the utility model, the pressure sensor includes a second pressure sensor 9. The second pressure sensor 9 is installed on the main line 1 at one end of the high-pressure pump 2 close to the first valve 3. During normal operation, if the pressure in the main line 1 at one end of the high-pressure pump 2 close to the first valve 3 is low or high, the system will control the working efficiency of the high-pressure pump 2 according to the signal fed back by the second pressure sensor 9, so that the output pressure of the main line 1 remains constant.
[0036] In the embodiment of the utility model, at least one temperature sensor is arranged on the main pipeline 1 to detect the temperature of the main pipeline 1; the temperature sensor includes a first temperature sensor 10 and a second temperature sensor 11. Specifically, the first temperature sensor 10 and the second temperature sensor 11 are respectively installed on both sides of the return pipe 7 on the main pipeline 1. When the temperature in the main pipeline 1 is high, the first temperature sensor 10 and the second temperature sensor 11 will feedback the signal, and the system will send out an alarm to remind the staff to shut down the shielded pump 4 and the high-pressure pump 2 to prevent the components on the main pipeline 1 from malfunctioning. At the same time, the staff will find the cause of the problem.
[0037] In the embodiment of the utility model, a one-way valve 17 is installed on the main pipeline 1, and the one-way valve 17 is located at the outlet end of the first valve 3; the one-way valve 17 can prevent the backflow of carbon dioxide and prevent cavitation from occurring in the equipment.
[0038] The utility model embodiment also includes a safety pressure relief pipeline 15, one end of which is connected to the high-pressure pump 2; a safety pressure relief valve 16 is installed on the safety pressure relief pipeline 15, and when the pressure in the main pipeline 1 and / or the high-pressure pump 2 is higher than the threshold of the safety pressure relief valve 16, the safety pressure relief valve 16 opens to discharge the carbon dioxide in the main pipeline 1 from the safety pressure relief pipeline 15, thereby preventing the main pipeline 1 from causing a malfunction due to excessive pressure.
[0039] The other end of the safety pressure relief pipeline 15 of the utility model embodiment is connected to the exhaust pipeline 13 and is located at the outlet end of the third valve 14; at least one pulsation damper 12 is arranged on the main pipeline 1. The pulsation damper 12 is installed at the inlet end and / or outlet end of the high-pressure pump 2 on the main pipeline 1. The pulsation damper 12 can eliminate the pressure pulsation or flow pulsation of the medium in the pipeline, and can play the role of pressure and flow in the main pipeline 1, eliminate pipeline vibration, and protect instruments.
[0040] In a specific embodiment, at least one fourth valve is provided on the main line 1. A fourth shut-off valve a18 is installed at the inlet end of the main line 1, and a fourth shut-off valve b19 is installed at the outlet end of the shielded pump 4 on the main line 1. During use, if a component on the main line 1 fails, the first valve 3, the fourth shut-off valve a18 and the fourth shut-off valve b19 can cooperate with each other to close the main line 1, thereby facilitating the repair or replacement of the failed component.
[0041] In combination with the embodiment of the utility model, the first valve 3, the fourth shut-off valve a18, the fourth shut-off valve b19, the second valve 8 and the third valve 14 are all configured as manual ball valves.
[0042] In combination with the embodiment of the utility model, Figure 1-Figure 3 The implementation principle of a carbon dioxide injection pump skid disclosed in an embodiment of the present application is as follows: by setting a return pipe 7 and an exhaust pipe 13 on the main pipe 1, when carbon dioxide is just introduced, the air in the main pipe 1 can be quickly discharged through the exhaust pipe 13 to prevent air from diluting the carbon dioxide; and the initially gasified carbon dioxide will flow back to the front end of the high-pressure pump 2 in the return pipe 7, and be liquefied under the pressure of the shielding pump 4; in the process of carbon dioxide reflux, the temperature of the main pipe 1 can be quickly reduced, so that the whole can quickly enter the working state.
[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A carbon dioxide injection pump skid, characterized in that: It includes a main pipe (1), A high-pressure pump (2) and a first valve (3) are connected in series on the main pipe (1), wherein the first valve (3) is located near the outlet end of the main pipe (1); and the high-pressure pump (2) is located near the inlet end of the main pipe (1); Connecting two ends of a return pipe (7) to the main pipe (1) located at two ends of the high-pressure pump (2); The reflux pipe (7) is connected to a second valve (8); The main pipe (1) is connected to an exhaust pipe (13), the exhaust pipe (13) is located near the outlet end of the main pipe (1) and at the inlet end of the first valve (3); the exhaust pipe (13) is located at the outlet end of the return pipe (7); A third valve (14) is connected to the drain line (13).
2. A carbon dioxide injection pump skid according to claim 1, characterized in that: It also comprises a shielded pump (4), which is connected to the main pipeline (1) and is located at the inlet end of the return pipe (7).
3. A carbon dioxide injection pump skid according to claim 2, characterized in that: At least one detection sensor is arranged on the main pipeline (1), which is located at the outlet end of the high-pressure pump (2) and / or the outlet end of the high-pressure pump (2) and / or the inlet end of the shielded pump (4).
4. A carbon dioxide injection pump skid according to claim 3, characterized in that: The detection sensor is a pressure sensor. At least one pressure sensor is arranged on the main pipeline (1) to detect the pressure of the main pipeline (1).
5. A carbon dioxide injection pump skid according to claim 4, characterized in that: The pressure sensor is arranged at the inlet end of the return pipe (7) and / or the outlet end of the return pipe (7) and / or the inlet end of the shielded pump (4).
6. A carbon dioxide injection pump skid according to claim 3, characterized in that: The detection sensor is a temperature sensor. At least one temperature sensor is arranged on the main pipe (1) for detecting the temperature of the main pipe (1). The temperature sensor is arranged at the inlet end and / or the outlet end of the reflux pipe (7).
7. The carbon dioxide injection pump skid according to claim 1, characterized in that: A one-way valve (17) is installed on the main pipeline (1), and the one-way valve (17) is located at the outlet end of the first valve (3).
8. The carbon dioxide injection pump skid according to claim 1, characterized in that: It also comprises a safety pressure relief pipeline (15), one end of which is connected to the high-pressure pump (2); a safety pressure relief valve (16) is installed on the safety pressure relief pipeline (15); the other end of the safety pressure relief pipeline (15) is connected to the exhaust pipeline (13) and is located at the outlet end of the third valve (14).
9. A carbon dioxide injection pump skid according to claim 3, characterized in that: The detection sensor is a pulsation damper (12), and at least one pulsation damper (12) is arranged on the main pipeline (1); the pulsation damper (12) is arranged at the inlet end and / or the outlet end of the high-pressure pump (2).
10. A carbon dioxide injection pump skid according to claim 2, characterized in that: At least one fourth valve is arranged on the main pipeline (1); the fourth valve is arranged at the inlet end and / or the outlet end of the shielded pump (4).