A skid-mounted mobile carbon dioxide injection device

Abstract

The utility model discloses a pry installation movable type carbon dioxide injection device, contain pry installation main part, one side of pry installation main part be equipped with first jar, second jar and third jar, the other side of pry installation main part be equipped with fourth jar, fifth jar and sixth jar, first jar, second jar and third jar intercommunication, fourth jar, fifth jar and sixth jar intercommunication, the downstream of pry installation main part is equipped with well mouth injection module.

Description

Technical Field

[0001] This utility model relates to a carbon dioxide injection device, and more specifically, a skid-mounted mobile carbon dioxide injection device. Background Technology

[0002] Existing carbon dioxide displacement and huff and puff equipment has complex processes, low automation, low injection intensity, and low carbon dioxide injection efficiency. Utility Model Content

[0003] Therefore, it is necessary to provide a skid-mounted mobile carbon dioxide injection device to address the aforementioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A skid-mounted mobile carbon dioxide injection device is characterized in that the skid-mounted mobile carbon dioxide injection device includes a skid-mounted main body, one side of which is provided with a first tank, a second tank and a third tank, and the other side of which is provided with a fourth tank, a fifth tank and a sixth tank. The first tank, the second tank and the third tank are connected to each other, the fourth tank, the fifth tank and the sixth tank are connected to each other, and a wellhead injection module is provided downstream of the skid-mounted main body.

[0005] In a preferred embodiment of this utility model, the skid-mounted body includes a manifold, which includes a first interface valve, a second interface valve, a third interface valve, a fourth interface valve, a fifth interface valve, and a sixth interface valve. A main inlet pipe is located downstream of the manifold, and a pair of shielded pump inlet pipes are provided on the main inlet pipe. A shielded pump module is located downstream of each shielded pump inlet pipe. The first interface valve is connected to the third tank via a first external pipe, and the fifth interface valve is connected to the fourth tank via a second external pipe. The shielded pump module includes a shut-off valve, and a shielded pump is located downstream of the shut-off valve. The shielded pump has a first shielded pump outlet pipe and a... The second shielded pump outlet pipe is equipped with a ball valve and a vent pipe on the first shielded pump outlet pipe. The second shielded pump outlet pipe is equipped with a first control valve and a second control valve. The outlets of both the first and second control valves are connected to a third control valve. The outlet of the third control valve is connected to a first pipeline. The inlet of each of the second control valves is connected to a second pipeline. A first flange is located at the end of the first pipeline. A fourth and fifth control valves are located at the end of the second pipeline. A second flange is located at the outlet of the fourth control valve, and a third flange is located at the outlet of the fifth control valve. The second flanges are connected to the fourth tank body via a third external pipeline. The wellhead injection module includes a first injection valve, a high-pressure pump, a second injection valve, and a check valve. The first injection valve is connected to the first flange via an injection pipe, and the check valve is connected to the wellhead. The high-pressure pump is equipped with an external pipe, which is connected to the third flange via a fourth external pipe.

[0006] Compared with the prior art, the present invention has the following beneficial effects: This skid-mounted mobile carbon dioxide injection device uses two parallel canned pumps, usually one for backup and one for use. The discharge volume can be controlled according to actual needs, making it suitable for a wider range of injection intensities. It effectively improves the recovery rate, has a high degree of automation, requires little manpower, has high safety performance, and is highly practical. Attached Figure Description

[0007] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the skid-mounted mobile carbon dioxide injection device of this utility model. Figure 2 for Figure 1 A schematic diagram of the skid-mounted main body in the middle; Figure 3 for Figure 1 A schematic diagram of the wellhead injection module in the diagram; The markings in the diagram are explained as follows: 1. Main inlet pipe; 10A. First pipe; 10B. Second pipe; 11. Fourth control valve; 12. Fifth control valve; 13. Second flange; 14. Third flange; 15. First flange; 16. First injection valve; 17. High-pressure pump; 18. Second injection valve; 19. Check valve; 2. Canned motor pump inlet pipe; 20. Injection pipe; 21. External pipe; 3. Shut-off valve; 4. Canned motor pump; 41. First canned motor pump outlet pipe; 42. Second canned motor pump outlet pipe; 5. Ball valve; 6. Drain pipe; 7. First control valve; 8. 9. Second control valve; 10. Third control valve; K. Manifold; K1. First interface valve; K2. Second interface valve; K3. Third interface valve; K4. Fourth interface valve; K5. Fifth interface valve; K6. Sixth interface valve; L1. First external pipeline; L2. Second external pipeline; L3. Third external pipeline; L4. Fourth external pipeline; M. Wellhead injection module; S. Skid-mounted main body; S1. Shielded pump module; T1. First tank; T2. Second tank; T3. Third tank; T4. Fourth tank; T5. Fifth tank; T6. Sixth tank. Detailed Implementation

[0009] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0010] like Figures 1 to 3 As shown, the skid-mounted mobile carbon dioxide injection device includes a skid-mounted main body S. One side of the skid-mounted main body S is provided with a first tank T1, a second tank T2 and a third tank T3. The other side of the skid-mounted main body S is provided with a fourth tank T4, a fifth tank T5 and a sixth tank T6. The first tank T1, the second tank T2 and the third tank T3 are connected, and the fourth tank T4, the fifth tank T5 and the sixth tank T6 are connected. A wellhead injection module M is provided downstream of the skid-mounted main body S.

[0011] like Figure 2 As shown, the skid-mounted main body S includes a manifold K, which includes a first interface valve K1, a second interface valve K2, a third interface valve K3, a fourth interface valve K4, a fifth interface valve K5, and a sixth interface valve K6. Downstream of the manifold K is a main inlet pipe 1, on which a pair of shielded pump inlet pipes 2 are installed. Downstream of each shielded pump inlet pipe 2 is a shielded pump module S1. The first interface valve K1 is connected to the third tank T3 via a first external pipe L1, and the fifth interface valve K5 is connected to the fourth tank T4 via a second external pipe L2. The shielded pump module S1 includes a shut-off valve 3. Downstream of the shut-off valve 3, a shielded pump 4 is provided. The shielded pump 4 is provided with a first shielded pump outlet pipe 41 and a second shielded pump outlet pipe 42. The first shielded pump outlet pipe 41 is provided with a ball valve 5 and a drain pipe 6. The second shielded pump outlet pipe 42 is provided with a first control valve 7 and a second control valve 8. The outlets of the first shielded pump outlet pipe 41 and the second control valve 8 are both connected to a third control valve 9. The outlet of the third control valve 9 is connected to a first pipeline 10A. The inlets of the second control valve 8 are both connected to a second pipeline 10B. The end of the first pipeline 10A is provided with a first flange 15. The end of the second pipeline 10B is provided with a fourth control valve 11 and a fifth control valve 12. The outlet of the fourth control valve 11 is provided with a second flange 13. The outlet of the fifth control valve 12 is provided with a third flange 14. The second flange 13 is connected to the fourth tank T4 through a third external pipeline L3.

[0012] like Figure 3 As shown, the wellhead injection module M includes a first injection valve 16, a high-pressure pump 17, a second injection valve 18, and a check valve 19. The first injection valve 16 is connected to the first flange 15 through an injection pipe 20, and the check valve 19 is connected to the wellhead. The high-pressure pump 17 is provided with an external pipe 21, which is connected to the third flange 14 through a fourth external pipe L4.

[0013] The following describes the operation of the skid-mounted mobile carbon dioxide injection device.

[0014] First, liquid carbon dioxide is fed into the main inlet pipe 1 from the third tank T3 and the fourth tank T4 through the first interface valve K1 and the fifth interface valve K5, respectively. It then enters one of the two canned pump modules S1, followed by the liquid carbon dioxide into the first pipeline 10A, and then through the first flange 15 into the wellhead injection module M. After being pressurized by the high-pressure pump 17 of the wellhead injection module M, it enters the wellhead for operation. Simultaneously, carbon dioxide flows back into the fourth tank T4 through the second pipeline 10B and the second flange 13. The carbon dioxide in the high-pressure pump 17 flows back to the skid-mounted main body S through the fourth external pipeline L4.

[0015] It should be noted that the two canned pump modules S1 are connected in parallel, with one typically serving as a backup.

[0016] This skid-mounted mobile carbon dioxide injection unit has the following advantages: ① Two canned pumps are connected in parallel, usually one as a backup and the other as a standby. The discharge volume can be controlled according to actual needs, and the applicable injection intensity range is wider. ② Minimum reflux equipment safety, ensuring safe operation of the equipment under low flow or abnormal operating conditions; ③ The PLC system is used for information-based and automated control, which is easy to operate and frees up manpower. At the same time, it is equipped with automatic alarm and emergency stop functions to ensure production safety.

[0017] This skid-mounted mobile carbon dioxide injection unit is used for large-scale carbon dioxide displacement and huff and puff operations in shale oil and gas, effectively improving the recovery rate. It features a high degree of automation, low manpower requirements, high safety performance, and strong practicality.

[0018] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. A skid-mounted mobile carbon dioxide injection device, characterized in that, The skid-mounted mobile carbon dioxide injection device includes a skid-mounted main body (S). A first tank (T1), a second tank (T2), and a third tank (T3) are provided on one side of the skid-mounted main body (S), and a fourth tank (T4), a fifth tank (T5), and a sixth tank (T6) are provided on the other side of the skid-mounted main body (S). The first tank (T1), the second tank (T2), and the third tank (T3) are connected to each other, and the fourth tank (T4), the fifth tank (T5), and the sixth tank (T6) are connected to each other. A wellhead injection module (M) is provided downstream of the skid-mounted main body (S).

2. The skid-mounted mobile carbon dioxide injection device according to claim 1, characterized in that, The skid-mounted main body (S) includes a manifold (K), which includes a first interface valve (K1), a second interface valve (K2), a third interface valve (K3), a fourth interface valve (K4), a fifth interface valve (K5), and a sixth interface valve (K6). A main inlet pipe (1) is located downstream of the manifold (K), and a pair of shielded pump inlet pipes (2) are provided on the main inlet pipe (1). A shielded pump module (S1) is located downstream of each shielded pump inlet pipe (2). The first interface valve (K1) is connected to the third tank (T3) via a first external pipe (L1), and the fifth interface valve (K5) is connected to the fourth tank (T4) via a second external pipe (L2). The shielded pump module (S1) includes a shut-off valve (3), and a shielded pump (4) is located downstream of the shut-off valve (3). The shielded pump (4) has a first shielded pump outlet pipe (41) and a second shielded pump outlet pipe (42). 42), the first shielded pump outlet pipe (41) is equipped with a ball valve (5) and a drain pipe (6), the second shielded pump outlet pipe (42) is equipped with a first control valve (7) and a second control valve (8), the outlets of the first shielded pump outlet pipe (41) and the second control valve (8) are both connected to a third control valve (9), the outlet of the third control valve (9) is connected to the first pipeline (10A), the inlet of the second control valve (8) is connected to the second pipeline (10B), the end of the first pipeline (10A) is equipped with a first flange (15), the end of the second pipeline (10B) is equipped with a fourth control valve (11) and a fifth control valve (12), the outlet of the fourth control valve (11) is equipped with a second flange (13), the outlet of the fifth control valve (12) is equipped with a third flange (14), the second flange (13) is connected to the fourth tank (T4) through a third external pipeline (L3), The wellhead injection module (M) includes a first injection valve (16), a high-pressure pump (17), a second injection valve (18), and a check valve (19). The first injection valve (16) is connected to the first flange (15) through an injection pipe (20). The check valve (19) is connected to the wellhead. The high-pressure pump (17) is provided with an external pipe (21). The external pipe (21) is connected to the third flange (14) through a fourth external pipe (L4).

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