Tight oil horizontal well staged oil extraction device

Abstract

The utility model relates to the field of oil production, in particular to a tight oil horizontal well staged oil production device which comprises an oil storage barrel. The oil storage barrel consists of a first oil barrel, a second oil barrel and a third oil barrel; oil extraction pipes are mounted at the bottoms of the first oil drum, the second oil drum and the third oil drum, and first valve bodies are mounted on the outer walls of the oil extraction pipes; an oil inlet pipe is installed at the bottom of the third oil barrel, and a second valve body is installed on the outer wall of the oil inlet pipe. An oil suction pump is mounted at the bottom of the oil inlet pipe; the oil outlet end of the oil suction pump is connected with an oil inlet pipe, a connecting pipe is installed at the oil inlet end of the oil suction pump, and the connecting pipe is connected with an oil well pipe. Oil extraction work can be conducted at the same time in three stages, and the oil collecting and processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of petroleum exploitation, in particular to a staged oil production device for a dense oil horizontal well. Background Art

[0002] With the continuous development of oil resources, the development of tight oil reservoirs has gradually become an important field of the oil industry. Tight oil reservoirs have the characteristics of low porosity and low permeability, making them difficult to exploit. Traditional vertical well oil production methods are difficult to achieve ideal results in tight oil reservoirs. Therefore, horizontal well oil production technology came into being, and horizontal wells can achieve efficient development of tight oil reservoirs. However, the existing horizontal well oil production devices still have some problems in practical applications, such as the inability to achieve staged oil production and low efficiency in oil collection and processing.

[0003] Therefore, a staged oil production device for tight oil horizontal wells is proposed. Utility Model Content

[0004] The utility model aims to provide a staged oil production device for a tight oil horizontal well.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A staged oil production device for a tight oil horizontal well, comprising:

[0007] Oil storage barrels;

[0008] The oil storage barrel is composed of a first oil barrel, a second oil barrel and a third oil barrel;

[0009] The bottom of the first oil barrel, the second oil barrel and the third oil barrel are all installed with oil production pipes, and the outer wall of the oil production pipe is installed with a first valve body;

[0010] An oil inlet pipe is installed at the bottom of the third oil barrel, and a second valve body is installed on the outer wall of the oil inlet pipe;

[0011] An oil suction pump is installed at the bottom of the oil inlet pipe;

[0012] The oil outlet end of the oil suction pump is connected to the oil inlet pipe, and the oil inlet end of the oil suction pump is equipped with a connecting pipe, and the connecting pipe is connected to the oil well pipe.

[0013] Preferably, a first pipe is installed at the bottom of the first oil barrel, a first flange is installed at the bottom of the first pipe, a second pipe is installed at the top of the second oil barrel, and a second flange is installed at the top of the second pipe;

[0014] The first flange and the second flange are connected by first fixing bolts;

[0015] A first sealing ring is arranged between the first flange and the second flange.

[0016] Preferably, a third pipe is installed at the bottom of the second oil barrel, a third flange is installed at the bottom of the third pipe, a fourth pipe is installed at the top of the third oil barrel, and a fourth flange is installed at the top of the fourth pipe;

[0017] The third flange and the fourth flange are connected by second fixing bolts;

[0018] A second sealing ring is arranged between the third flange and the fourth flange.

[0019] Preferably, a third valve body is installed on the outer wall of the first pipeline.

[0020] Preferably, a fourth valve body is installed on the outer wall of the third pipeline.

[0021] Preferably, two half sleeves are provided on the outer wall of the second oil barrel, and connecting ears are fixed on the outer walls of the two half sleeves, and the two connecting ears are connected by a third fixing bolt;

[0022] Support rods are fixed on the outer walls of the two half sleeves, and a fixing plate is fixed on one end of the support rods.

[0023] Preferably, a first limiting ring and a second limiting ring are symmetrically fixed on the outer wall of the second oil barrel;

[0024] The first limiting ring and the second limiting ring are respectively located on two sides of the two half sleeves.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The utility model starts the oil suction pump, and the oil suction pump sucks the oil in the oil well pipe into the oil storage barrel (the first oil barrel, the second oil barrel, and the third oil barrel) through the connecting pipe, and then closes the first valve body, the second valve body, the third valve body, and the fourth valve body. At this time, the first oil barrel, the second oil barrel, and the third oil barrel will divide the oil storage barrel into three parts, and then open the first valve bodies on the outer walls of the three oil production pipes respectively, so that the oil in the first oil barrel, the second oil barrel, and the third oil barrel can be processed. Compared with the existing ones, the utility model can be divided into three stages to carry out oil production work at the same time, thereby improving the efficiency of oil collection and processing;

[0027] The utility model can disassemble the first oil barrel and the second oil barrel by disassembling the first fixing bolt, and then disassemble the second oil barrel and the third oil barrel by disassembling the second fixing bolt. Therefore, the utility model is convenient for disassembling and maintaining the first oil barrel, the second oil barrel and the third oil barrel, which helps to improve the working efficiency of the first oil barrel, the second oil barrel and the third oil barrel.

[0028] The two half-sets in the utility model are connected to the outer wall of the second oil barrel by connecting ears and third fixing bolts, and a support rod is fixed on the outer wall of the half-set, and a fixing plate is fixed at one end of the support rod. With the cooperation of the fixing plate, the support rod and the two half-sets, the first oil barrel, the second oil barrel and the third oil barrel can be supported, thereby improving the stability of the first oil barrel, the second oil barrel and the third oil barrel, and helping to improve the working efficiency of the first oil barrel, the second oil barrel and the third oil barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0030] Figure 2 It is a partial structural schematic diagram of the utility model.

[0031] Figure 3 It is a schematic structural diagram of the first limiting ring, the second limiting ring and the second oil barrel of the utility model.

[0032] Figure 4 It is a schematic diagram of the cross-sectional structure of the base in the utility model.

[0033] In the figure: 1. first oil drum; 2. second oil drum; 3. third oil drum; 4. oil production pipe; 5. first valve body; 6. first pipeline; 7. first flange; 8. second flange; 9. second pipeline; 10. first fixing bolt; 11. third valve body; 12. third pipeline; 13. third flange; 14. fourth flange; 15. fourth pipeline; 16. second fixing bolt; 17. fourth valve body; 18. oil inlet pipe; 19. oil suction pump; 20. connecting pipe; 21. second valve body; 22. half sleeve; 23. connecting ear; 24. third fixing bolt; 25. support rod; 26. fixing plate; 27. first limit ring; 28. second limit ring. DETAILED DESCRIPTION

[0034] 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.

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Embodiment 1:

[0037] See also Figure 1 , 4, the utility model provides a technical solution: to achieve the above-mentioned purpose, the utility model provides the following technical solution: a staged oil production device for a tight oil horizontal well, comprising: an oil storage barrel; the oil storage barrel is composed of a first oil barrel 1, a second oil barrel 2, and a third oil barrel 3; the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3 are all equipped with an oil production pipe 4 at the bottom, and a first valve body 5 is installed on the outer wall of the oil production pipe 4; an oil inlet pipe 18 is installed at the bottom of the third oil barrel 3, and a second valve body 21 is installed on the outer wall of the oil inlet pipe 18; an oil suction pump 19 is installed at the bottom of the oil inlet pipe 18; the oil outlet end of the oil suction pump 19 is connected to the oil inlet pipe 18, and the oil inlet end of the oil suction pump 19 is equipped with a connecting pipe 20, which is connected to the oil well pipe; a first pipeline 6 is installed at the bottom of the first oil barrel 1, and the first pipeline 6 A first flange 7 is installed at the bottom, a second pipe 9 is installed at the top of the second oil barrel 2, and a second flange 8 is installed at the top of the second pipe 9; the first flange 7 and the second flange 8 are connected by a first fixing bolt 10; a first sealing ring is provided between the first flange 7 and the second flange 8, a third pipe 12 is installed at the bottom of the second oil barrel 2, a third flange 13 is installed at the bottom of the third pipe 12, a fourth pipe 15 is installed at the top of the third oil barrel 3, and a fourth flange 14 is installed at the top of the fourth pipe 15; the third flange 13 and the fourth flange 14 are connected by a second fixing bolt 16; a second sealing ring is provided between the third flange 13 and the fourth flange 14, a third valve body 11 is installed on the outer wall of the first pipe 6, and a fourth valve body 17 is installed on the outer wall of the third pipe 12.

[0038] Specifically, the utility model starts the oil suction pump 19, and the oil suction pump 19 sucks the oil in the oil well pipe into the oil storage barrels (the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3) through the connecting pipe 20, and then closes the first valve body 5, the second valve body 21, the third valve body 11, and the fourth valve body 17. At this time, the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3 will divide the oil storage barrels into three parts, and then open the first valve bodies 5 on the outer walls of the three oil production pipes 4 respectively, so that the oil in the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3 can be processed for oil production. Compared with the existing ones, the utility model can be divided into three stages to carry out oil production at the same time, thereby improving the efficiency of oil collection and processing.

[0039] The utility model can disassemble the first oil barrel 1 and the second oil barrel 2 by disassembling the first fixing bolt 10, and then disassemble the second oil barrel 2 and the third oil barrel 3 by disassembling the second fixing bolt 16. Therefore, the utility model is convenient for disassembling and maintaining the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3, which helps to improve the working efficiency of the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3.

[0040] The utility model is provided with a first sealing ring and a second sealing ring, and under the action of the first sealing ring, the sealing performance of the connection between the first flange 7 and the second flange 8 can be improved to avoid leakage;

[0041] Under the action of the second sealing ring, the sealing performance of the connection between the third flange 13 and the fourth flange 14 can be improved to avoid leakage.

[0042] Embodiment 2:

[0043] See also Figure 1-3 The utility model provides a technical solution: a staged oil production device for a tight oil horizontal well, wherein two half sleeves 22 are arranged on the outer wall of a second oil barrel 2, and connecting ears 23 are fixed on the outer walls of the two half sleeves 22, and the two connecting ears 23 are connected by a third fixing bolt 24; support rods 25 are fixed on the outer walls of the two half sleeves 22, and a fixing plate 26 is fixed at one end of the support rod 25, and a first limiting ring 27 and a second limiting ring 28 are symmetrically fixed on the outer wall of the second oil barrel 2; the first limiting ring 27 and the second limiting ring 28 are respectively located on both sides of the two half sleeves 22.

[0044] Specifically, the two half sleeves 22 in the utility model are connected to the outer wall of the second oil barrel 2 through the connecting ears 23 and the third fixing bolts 24, and the support rod 25 is fixed on the outer wall of the half sleeve 22, and a fixing plate 26 is fixed at one end of the support rod 25. With the cooperation of the fixing plate 26, the support rod 25 and the two half sleeves 22, the first oil barrel 1, the second oil barrel 2 and the third oil barrel 3 can be supported, thereby improving the stability of the first oil barrel 1, the second oil barrel 2 and the third oil barrel 3, and helping to improve the working efficiency of the first oil barrel 1, the second oil barrel 2 and the third oil barrel 3.

[0045] The utility model is provided with a first limiting ring 27 and a second limiting ring 28, under the action of which the two half sleeves 22 can be limited to prevent the half sleeves 22 from loosening, thereby improving the stability of the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3.

[0046] Working principle:

[0047] First, the oil suction pump 19 is started, and the oil suction pump 19 sucks the oil in the oil well pipe into the oil storage barrels (the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3) through the connecting pipe 20. Then, the first valve body 5, the second valve body 21, the third valve body 11, and the fourth valve body 17 are closed. At this time, the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3 will divide the oil storage barrels into three parts, and then the first valve bodies 5 on the outer walls of the three oil production pipes 4 are opened respectively, so that the oil in the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3 can be processed for oil production. Compared with the existing ones, the utility model can be divided into three stages to carry out oil production at the same time, thereby improving the efficiency of oil collection and processing.

[0048] Secondly, by disassembling the first fixing bolt 10, the first oil barrel 1 and the second oil barrel 2 can be disassembled, and by disassembling the second fixing bolt 16, the second oil barrel 2 and the third oil barrel 3 can be disassembled. Therefore, the utility model facilitates the disassembly and maintenance of the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3, which helps to improve the working efficiency of the first oil barrel 1, the second oil barrel 2, and the third oil barrel 3.

[0049] The last two half sleeves 22 are connected to the outer wall of the second oil barrel 2 through the connecting ears 23 and the third fixing bolts 24, and the support rod 25 is fixed on the outer wall of the half sleeve 22, and a fixing plate 26 is fixed at one end of the support rod 25. With the cooperation of the fixing plate 26, the support rod 25 and the two half sleeves 22, the first oil barrel 1, the second oil barrel 2 and the third oil barrel 3 can be supported, thereby improving the stability of the first oil barrel 1, the second oil barrel 2 and the third oil barrel 3, and helping to improve the working efficiency of the first oil barrel 1, the second oil barrel 2 and the third oil barrel 3.

[0050] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0051] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A staged oil production device for a tight oil horizontal well, characterized in that: include: Oil storage barrels; The oil storage barrel is composed of a first oil barrel (1), a second oil barrel (2), and a third oil barrel (3); The bottoms of the first oil barrel (1), the second oil barrel (2) and the third oil barrel (3) are all equipped with oil production pipes (4), and the outer walls of the oil production pipes (4) are equipped with first valve bodies (5); An oil inlet pipe (18) is installed at the bottom of the third oil barrel (3), and a second valve body (21) is installed on the outer wall of the oil inlet pipe (18); An oil suction pump (19) is installed at the bottom of the oil inlet pipe (18); The oil outlet end of the oil suction pump (19) is connected to the oil inlet pipe (18), and the oil inlet end of the oil suction pump (19) is installed with a connecting pipe (20), and the connecting pipe (20) is connected to the oil well pipe.

2. A staged oil production device for horizontal tight oil wells according to claim 1, characterized in that: A first pipe (6) is installed at the bottom of the first oil barrel (1), a first flange (7) is installed at the bottom of the first pipe (6), a second pipe (9) is installed at the top of the second oil barrel (2), and a second flange (8) is installed at the top of the second pipe (9); The first flange (7) and the second flange (8) are connected by a first fixing bolt (10); A first sealing ring is provided between the first flange (7) and the second flange (8).

3. A staged oil production device for a tight oil horizontal well according to claim 1, characterized in that: A third pipe (12) is installed at the bottom of the second oil barrel (2), a third flange (13) is installed at the bottom of the third pipe (12), a fourth pipe (15) is installed at the top of the third oil barrel (3), and a fourth flange (14) is installed at the top of the fourth pipe (15); The third flange (13) and the fourth flange (14) are connected by a second fixing bolt (16); A second sealing ring is provided between the third flange (13) and the fourth flange (14).

4. A staged oil production device for a tight oil horizontal well according to claim 2, characterized in that: A third valve body (11) is installed on the outer wall of the first pipeline (6).

5. A staged oil production device for a tight oil horizontal well according to claim 3, characterized in that: A fourth valve body (17) is installed on the outer wall of the third pipeline (12).

6. A staged oil production device for a tight oil horizontal well according to claim 1, characterized in that: Two half sleeves (22) are provided on the outer wall of the second oil barrel (2), and connecting ears (23) are fixed on the outer walls of the two half sleeves (22), and the two connecting ears (23) are connected by a third fixing bolt (24); A support rod (25) is fixed on the outer wall of the two half sleeves (22), and a fixing plate (26) is fixed on one end of the support rod (25).

7. A staged oil production device for a horizontal well of tight oil according to claim 6, characterized in that: A first limiting ring (27) and a second limiting ring (28) are symmetrically fixed on the outer wall of the second oil barrel (2); The first limiting ring (27) and the second limiting ring (28) are respectively located on the two sides of the two half sleeves (22).

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