An integrated sand control oil production device and method

Abstract

The application designs a kind of integrated sand-prevention oil extraction device and method, which comprises a Lailuo triangular pump body, multiple T-shaped pump rods, a sand-prevention hemispherical net, a one-way opening valve and a one-way oil inlet, a mud turbine is arranged inside a lower self-cleaning shell, and a one-way opening of the lower self-cleaning shell is arranged, a hollow cylinder is connected below the mud turbine, a protruding cylinder piston is arranged inside the hollow cylinder, a three one-way hole piston is connected to the protruding cylinder piston, a hole column is arranged at the bottom of the lower self-cleaning shell, a groove is designed along the arc line at the bottom of the lower self-cleaning shell, multiple nozzles are protruded outside the bottom of the lower self-cleaning shell and are aligned with the lower self-cleaning shell and the sand-prevention net to form self-cleaning, and the whole device is arranged in an oil pipe, the lower layer of the oil pipe is a filtering oil pipe with regular pores, the application uses formation pressure to drive the mud turbine and high-pressure oil injection to realize combined oil extraction, has the advantages of energy saving, self-cleaning and good sand-prevention effect, and improves the mining efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a device and a method, in particular to a one-piece sand-prevention oil extraction device and method. BACKGROUND

[0002] Petroleum is a viscous, dark brown solid-liquid gas mixture with various alkanes, cyclic hydrocarbons, aromatic hydrocarbons as main components, and is known as "the blood of industry", and is one of the main objects of geological exploration. In China, the distribution range of relatively loose sandstone reservoir is wide and the reserves are large. One of the main problems in the exploitation process of this type of reservoir is how to better prevent sand in oil wells. On the other hand, the research and development of sand-prevention equipment and technology in the process of oil well exploitation are crucial to the smooth development of various reservoirs. At present, the mechanical sand-prevention means accounts for the majority in the problem of oil and gas well sand-prevention at home and abroad. However, in the existing oil extraction process, fine sand or even gravel in the barrel may enter the pump with the liquid, causing blockage, making the oil pumping invalid, and even causing the oil and gas well to be unable to produce normally, so it is necessary to invent a one-piece sand-prevention oil extraction device and method. SUMMARY

[0003] In view of the above problems, the present application provides a one-piece sand-prevention oil extraction device and method, which is used to solve the problems of reducing the sand production rate in the process of oil extraction, saving energy and improving the oil extraction efficiency with the progress of exploitation.

[0004] The technical scheme adopted by the present application to solve its technical problems is: the present application comprises a Leluo triangular pump body, T-shaped pump rods, one-sided opening valves, one-way oil inlets, hemispherical sand prevention nets, mud turbines, hollow cylinders, protruding cylinder piston rods, three one-way hole pistons, an upper shell, annular 7-shaped grooves, a lower self-cleaning shell, protruding annular 7-shaped clamping grooves, inner guide grooves, filter screens, self-cleaning nozzles, self-cleaning chambers, hole columns, hollow grooves, oblique guide grooves, oil pipes, wiring grooves, loose leaves, filter oil pipes, buckles, circular piston discs and semicircular piston discs. The Leluo triangular pump body is installed in the upper shell, three T-shaped pump rods are embedded in the inner guide grooves of the Leluo triangular pump body, the T-shaped pump rods are respectively connected with one semicircular piston disc, and the semicircular piston disc is embedded with one one-sided opening valve. One one-way oil inlet is respectively embedded in the oil inlet of the upper shell, and a hemispherical sand prevention net is connected outside the one-way oil inlet, and the one-way oil inlet is internally tangent to the circular piston disc. The annular 7-shaped grooves below the Leluo triangular pump body are connected with the mud turbine center and the protruding annular 7-shaped clamping grooves above the center. The mud turbine center is rigidly connected with the hollow cylinder below the center, the protruding cylinder piston rod is embedded in the inner tangent circle of the hollow cylinder, the hollow cylinder is connected with the three one-way hole pistons, the three piston holes are embedded with loose leaves, and buckles are arranged on one side of the three loose leaves. The three one-way hole pistons are embedded with the lower self-cleaning shell, the lower self-cleaning shell has a rectangular slot along the cylinder wall and is embedded with a filter screen, and the upper shell is connected with the lower self-cleaning shell below the upper shell. The oil extraction device is arranged in the oil pipe, the filter oil pipe is connected below the oil pipe, the hollow rectangular wiring groove is arranged on the inner wall of the oil pipe and extends to the Leluo triangular pump body.

[0005] In the above scheme, the depth of the inner guide groove of the Leluo triangular pump body is the same as the length of the T-shaped pump rod and is externally tangent, the included angle between two adjacent T-shaped pump rods is 120°, and the T-shaped pump rods are embedded in the inner guide groove of the Leluo triangular pump body.

[0006] In the above scheme, the annular 7-shaped groove below the Leluo triangular pump body and the protruding annular 7-shaped clamping groove above the center of the mud turbine center have the same structure size, the rotation angle between two adjacent 7-shaped grooves is 60°, and the rotation angle between two adjacent 7-shaped clamping grooves is also 60°.

[0007] In the above scheme, an oblique guide groove with the same depth is designed in the hollow cylinder below the center of the mud turbine center, the protruding length of the protruding cylinder piston rod is the same as the depth of the oblique guide groove, and the protruding cylinder piston rod is embedded in the oblique guide groove.

[0008] In the above scheme, the lower self-cleaning shell near the same height position of the mud turbine has a rectangular opening along the cylinder wall and a filter screen internally tangent to the filter screen along the cylinder wall, the lower self-cleaning shell is provided with a hollow column hole at the bottom, the hemispherical bottom is internally provided with a hollow groove connected with the column hole, and a plurality of protruding self-cleaning nozzles are arranged on the outer side of the cylinder wall close to the bottom.

[0009] The oil extraction device is placed in the filtering oil pipe, and a cylindrical oil pipe is rigidly connected to the top of the oil extraction device, and a rectangular hollow wiring groove is arranged in the inner wall of the oil pipe.

[0010] In the above scheme, first, the lower shell is along the rectangular opening on the simple wall and the filter screen, and the initial power for the oil pump is provided by the formation pressure, so that the mud turbine starts to rotate, the protruding annular 7-shaped clamping groove on the upper side of the mud turbine is embedded in the annular 7-shaped groove below the Leluo triangular pump body, and the rotation of the mud turbine drives the rotation of the Leluo triangular pump body connected above, and the T-shaped pump rod is embedded in the inner guide groove of the Leluo triangular pump body, when the Leluo triangular pump body rotates, the T-shaped pump rod moves along the inner guide groove (in the upper shell) to make horizontal piston movement, and the structure of the pump formed by the T-shaped pump rod, the single-sided opening valve, the one-way oil inlet, the hemispherical sand prevention screen, the circular piston disc and the semicircular piston disc realizes the oil extraction action. The hollow cylinder connected below the mud turbine is rotated by the rotation of the mud turbine, the inclined guide groove in the hollow cylinder rotates, the protruding cylinder piston rod moves along the track of the inclined guide groove in the vertical direction, and the protruding cylinder piston rod, the three one-way hole pistons and the hinge form a hydraulic structure, so that part of the crude oil in the self-cleaning chamber is compressed into the hole column, the liquid is compressed along the hollow groove to the self-cleaning nozzle, and the effect of the self-cleaning device is realized.

[0011] The present application has the following beneficial effects:

[0012] 1. The cooperation movement of the T-shaped rod and the inner guide groove of the Leluo triangular pump body can make the piston move well in the horizontal direction, and the oil extraction action is more efficient.

[0013] 2. The rectangular opening on the lower self-cleaning shell cylinder wall near the equal height position of the mud turbine and the embedded filter screen on the cylinder wall can provide power for the mud turbine by using the formation pressure, so that the energy consumption can be effectively saved to a certain extent.

[0014] 3. The rotation of the mud turbine provides energy for the lower self-cleaning structure, so that the device self-cleaning system is energy self-sufficient.

[0015] 4. The hollow column hole is arranged on the bottom of the lower self-cleaning shell, the hemispherical bottom has a plurality of hollow grooves connected with small holes, and a plurality of protruding self-cleaning nozzles are arranged on the outer side of the cylinder wall near the bottom, so that the device and the sand prevention screen can be cleaned, the sand prevention screen is prevented from being blocked with the development of mining, and the efficiency is reduced.

[0016] 5. The cylindrical filtering oil pipe placed outside the device can effectively prevent larger sand from entering the oil pipe and improve the oil extraction efficiency, and the hollow rectangular wiring groove arranged in the wall of the oil pipe can also prevent the cable from being damaged to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall schematic diagram of the present application,

[0018] Figure 2 is the schematic diagram of the internal equipment of the present application.

[0019] Figure 3 is the three-dimensional schematic diagram of the external oil pipe and the filtering oil pipe of the present application.

[0020] Figure 4 is the sectional structure schematic diagram of the internal equipment of the present application.

[0021] Figure 5 is the structure schematic diagram of the T-shaped pump rod embedded in the inside guide groove of the Leluo triangular pump body of the present application.

[0022] Figure 6 is the structure schematic diagram of the annular 7-shaped groove of the Leluo triangular pump body of the present application.

[0023] Figure 7 is the structure schematic diagram of the protruding annular 7-shaped card structure on the mud turbine of the present application.

[0024] Figure 8 is the structure schematic diagram of the annular 7-shaped groove of the Leluo triangular pump body and the protruding annular 7-shaped card groove of the present application.

[0025] Figure 9 is the sectional structure schematic diagram of the mud turbine, the hollow cylinder and the inclined guide groove of the present application.

[0026] Figure 10 is the connection schematic diagram of the protruding cylinder piston and the hollow cylinder of the present application. Figure 11 is the structure schematic diagram of the filter screen embedded in the inner wall of the barrel of one side of the lower shell and the self-cleaning nozzle outside the bottom of the barrel of the present application.

[0027] Figure 12 is the structure schematic diagram of the single-sided oil inlet buckle of the present application.

[0028] Figure 13 is the structure schematic diagram of the single-sided opening valve of the present application.

[0029] Figure 14 is the schematic diagram of the main working structure inside the present application.

[0030] Figure 15 is the structure schematic diagram of the three one-way hole piston, the leaf and the buckle of the present application.

[0031] Figure: 1. Lelos triangular pump body, 2. T-shaped pump rod, 3. Single-sided opening valve, 4. One-way oil inlet, 5. Hemispherical sand prevention net, 6. Mud turbine, 7. Hollow cylinder, 8. Projecting cylinder piston rod, 9. Three one-way hole piston, 10. Upper shell, 11. Annular 7-shaped groove, 12. Lower self-cleaning shell, 13. Projecting annular 7-shaped clamping groove, 14. Inner guide groove, 15. Filter screen, 16. Self-cleaning nozzle, 17. Self-cleaning chamber, 18. Hole column, 19. Hollow groove, 20. Inclined guide groove, 21. Oil pipe, 22. Wiring groove, 23. Loose-leaf, 24. Filtered oil pipe, 25. Buckle, 26. Circular piston disc, 27. Semi-circular piston. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be further described below in combination with the drawings.

[0033] In combination with Figure 1 , Figure 2 , Figure 3 , the oil pumping device is placed in the designed oil pipe.

[0034] In combination with Figure 2 , Figure 3 , Figure 4 , Figure 13 , the upper shell 10 is fixedly connected with the lower self-cleaning shell 12, the Lelos triangular pump body 1 is arranged inside the upper shell 10, the T-shaped pump rod 2 is embedded in the inner guide groove 14 of the Lelos triangular pump body 1, the T-shaped pump rod 2 is connected with the semi-circular piston disc 27, the semi-circular piston disc 27 is embedded with the single-sided opening valve 3, the outer side of the upper shell 10 is embedded with the hemispherical sand prevention net 5, and the one-way oil inlet 4 is arranged, the one-way oil inlet 4 is tangent to the circular piston disc 26, the Lelos triangular pump body 1 is connected with the mud turbine 6 below, the mud turbine 6 is further connected with a hollow cylinder 7 below, the projecting cylinder piston 8 is arranged in the hollow cylinder 7, the projecting cylinder piston 8 is connected with the three one-way hole piston, thereby forming the self-cleaning chamber 17 at the bottom of the lower self-cleaning shell 12, the hole column is arranged at the bottom of the lower self-cleaning shell 12, and the self-cleaning nozzle 16 is arranged at the outer side of the bottom; the entire device is arranged in the pipeline, the entire pipeline is divided into the oil pipe 21 in the upper half and the filtered oil pipe 24 in the lower half, the hollow rectangular wiring groove 22 is arranged in the pipe wall of the oil pipe 21 and extends to the device.

[0035] In combination with Figure 5 , the shorter rod of the T-shaped pump rod 2 is embedded in the inner guide groove 14 of the Lelos triangular pump body 1, and the piston effect can be achieved by the movement of the T-shaped pump rod 2 in the inner guide groove 14.

[0036] In combination with Figure 6 , Figure 7 , Figure 8As shown, the Leluo triangular pump body 1 is provided below the annular 7-shaped groove 11 and the protruding annular 7-shaped clamping groove 13 on the upper side of the mud turbine 6, so that the mud turbine 6 can drive the Leluo triangular pump body 1 to do circular motion.

[0037] In combination Figure 9 , Figure 10 As shown, the hollow cylinder 7 is connected below the mud turbine 6, the inclined guide groove 20 is arranged on the inner side of the hollow cylinder 7, the protruding cylindrical piston 8 is embedded in the inclined guide groove 20, and the upper and lower piston movements of the protruding cylindrical piston 8 can be driven by the rotation of the hollow cylinder 7.

[0038] In combination Figure 4 , Figure 11 , Figure 14 , Figure 15 As shown, the protruding cylindrical piston rod 8 is connected to the three one-way hole pistons 9, the three piston holes are embedded with the hinges 23, the buckles 25 are arranged on one side of the three hinges, and the self-cleaning chamber 17 is formed with the bottom of the lower self-cleaning shell 12. A filter screen 15 is arranged on the cylinder wall of the lower self-cleaning shell 12, a hollow hole column 18 is arranged at the center of the bottom, and a hollow groove 19 is connected to the self-cleaning nozzle 16 close to the outside of the bottom layer.

[0039] Specific working principle: The entire pump oil device is arranged in the oil pipe 21 and the filter oil pipe 24, the filter oil pipe 24 is provided with regular pores to preliminarily filter the gravel in the formation, and a rectangular hollow wiring groove 22 is arranged in the inner wall of the oil pipe 21, which can better reduce the damage of the cable by sand and gravel.

[0040] The lower part of the Leluo triangular pump body 1 is provided with a ring-shaped 7-shaped groove 11 which is engaged with the protruding ring-shaped 7-shaped clamping groove 13 on the upper part of the mud turbine 6. The initial formation pressure can make the oil flow into the equipment to drive the mud turbine 6 to rotate through the filter screen 15 on the barrel wall of the lower self-cleaning shell 12. The mud turbine 6 drives the Leluo triangular pump body 1 to start rotating through the engagement structure of the protruding ring-shaped 7-shaped clamping groove 13 and the ring-shaped 7-shaped groove 11. The Leluo triangular pump body 1 rotates, and the T-shaped pump rod 2 embedded in the inner guide groove 14 makes horizontal piston movement, and the semicircular piston disc 27 connected with the T-shaped pump rod 2 makes piston movement to complete the oil pumping action. Because the one-way opening valve 3 is provided with a buckle 25 on one side, it can only open inward, and the circular piston disc 26 can also only open inward due to the buckle 25 on one side. Therefore, when the T-shaped pump rod 2 moves horizontally inward, the one-way opening valve 3 closes and the circular piston disc 26 opens inward, which can pump oil into the pump. When the T-shaped pump rod 2 moves horizontally outward, the one-way opening valve 3 opens inward and the circular piston disc 26 closes, which can deliver the pumped oil outward. The oil pumping action can be completed by using pressure. In addition, the embedded hemispherical sand prevention net 5 at the one-way oil inlet 4 of the upper shell 10 can effectively prevent sand from entering the one-way oil inlet 4.

[0041] When the oil flows from the filter screen 15 on the barrel wall of the lower self-cleaning shell 12 into the Leluo triangular pump body 1, the mud turbine 6 is driven to rotate through the structure of the ring-shaped 7-shaped groove 11 below the Leluo triangular pump body 1 and the protruding ring-shaped 7-shaped clamping groove 13 above the mud turbine 6. The hollow cylinder 7 connected rigidly below the mud turbine 6 is also rotated, and the inner guide groove 14 in the hollow cylinder 7 rotates to make the protruding cylinder piston rod 8 embedded in the inner guide groove 14 move up and down along the inclined guide groove 20. Because the hinge 23 embedded in the three piston holes of the three-way piston 9 is provided with a buckle 25 on one side, it can only open downward. Therefore, when the protruding cylinder piston 8 moves upward, the three-way piston 9 opens downward to compress part of the flowing oil into the self-cleaning chamber 17. When the protruding cylinder piston 8 moves downward, the three-way piston 9 closes. At this time, the oil in the self-cleaning chamber 17 is compressed. The compressed liquid passes through the hole column 18 opened at the bottom of the lower self-cleaning shell 12, instantaneously increases the pressure, and makes the compressed liquid enter the hollow groove 19 opened at the bottom of the lower self-cleaning shell at high speed. The high-speed compression is close to the outside of the simple wall bottom, and a plurality of protruding self-cleaning nozzles are provided, so that part of the oil is sprayed at high speed from the self-cleaning nozzle 16, and the self-cleaning of the simple wall and the filter screen is completed along the designed direction, the oil production effect is enhanced, and the self-cleaning efficiency is improved.

Claims

1. An integrated sand-prevention oil extraction device, comprising: a Lai Luo triangular pump body (1), a T-shaped pump rod (2), a single-sided opening valve (3), a one-way oil inlet (4), a hemispherical sand-prevention net (5), a mud turbine (6), a hollow column (7), a protruding column piston rod (8), a three one-way hole piston (9), an upper shell (10), a ring-shaped 7-shaped groove (11), a lower self-cleaning shell (12), a protruding ring-shaped 7-shaped clamping groove (13), an inner guide groove (14), a filter screen (15), a self-cleaning nozzle (16), a self-cleaning chamber (17), a hole column (18), a hollow groove (19), an inclined guide groove (20), an oil pipe (21), a wiring groove (22), a loose-leaf (23), a filtered oil pipe (24), a buckle (25), a round piston disc (26), a semicircular piston disc (27), characterized in that : The upper shell (10) is provided with a Lely triangle pump body (1), three T-shaped pump rods (2) are embedded in the inner guide groove (14) of the Lely triangle pump body (1), the T-shaped pump rods (2) are respectively connected with a semicircular piston disc (27), the semicircular piston disc (27) is embedded with a one-side opening valve (3), the oil inlet of the upper shell (10) is respectively cut with a one-way oil inlet (4), the one-way oil inlet (4) is cut with a circular piston disc (26) in the middle, and a hemispherical sand prevention net (5) is embedded outside.

2. The one-piece sand control production device of claim 1, wherein : The lower ring-shaped 7-shaped groove (11) of the Lely triangle pump body (1) is connected with the protruding ring-shaped 7-shaped clamping groove (13) on the upper center of the mud turbine (6), the hollow cylinder (7) is rigidly connected below the center of the mud turbine (6), the protruding cylinder piston rod (8) is embedded in the concentric circle inside the hollow cylinder (7), the hollow cylinder (7) is connected with three one-way hole pistons (9), the three piston holes are embedded with hinges (23), and buckles (25) are arranged on one side of the three hinges, the three one-way hole pistons (9) are embedded with the lower self-cleaning shell (12) and form a self-cleaning chamber (17) with the lower self-cleaning shell.

3. The one-piece sand control production device of claim 1, wherein : The lower self-cleaning shell (12) is provided with a rectangular slot along the cylinder wall and embedded with a filter screen (15), the upper shell (10) and the lower self-cleaning shell (12) are connected together, the oil extraction device is arranged in the oil pipe (21), the oil pipe (21) is connected with the filter oil pipe (24) below, and the hollow rectangular wire slot (22) is arranged on the inner wall of the oil pipe (21) and extends to the Lely triangle pump body (1).

4. The one-piece sand control production device of claim 1, wherein : The depth of the inner guide groove (14) of the Lely triangle pump body (1) is the same as the length of the T-shaped pump rod (2) and is circumscribed, the included angle between two adjacent T-shaped pump rods (2) is 120°, and the T-shaped pump rods (2) are embedded in the inner guide groove (14) of the Lely triangle pump body (1).

5. The one-piece sand control production device of claim 1, wherein : The lower ring-shaped 7-shaped groove (11) of the Lely triangle pump body (1) is the same in structure and size as the protruding ring-shaped 7-shaped clamping groove (13) on the upper center of the mud turbine (6), the rotation angle between two adjacent 7-shaped grooves (11) is 60°, and the rotation angle between two adjacent 7-shaped clamping grooves (13) is also 60°.

6. The one-piece sand control production device of claim 1, wherein : An equal-depth inclined guide groove (20) is designed on the inner side of the hollow cylinder (7) rigidly connected below the center of the mud turbine (6), the protruding length of the protruding cylinder piston rod (8) is equal to the depth of the inclined guide groove (20) and is embedded in the inclined guide groove (20).

7. A method for oil production using the integrated sand control oil production device according to any one of claims 1-6, characterized in that : The lower self-cleaning shell (12) is provided with a rectangular opening along the cylinder wall and a filter screen (15) cut along the cylinder wall at a position close to the mud turbine (6), a hollow hole column (18) is arranged at the bottom of the lower self-cleaning shell (12), a hollow groove (19) is arranged inside the hemispherical bottom and connected with the hole column (18), and a plurality of protruding self-cleaning nozzles (16) are arranged on the outer side of the cylinder wall close to the bottom. : The oil extraction device is arranged in the filter oil pipe (24), a cylindrical oil pipe (21) is rigidly connected above, and a rectangular hollow wire slot (22) is arranged in the inner part of the oil pipe (21) wall. : The method comprises the following steps: First is the lower shell (12) along the rectangular opening on the wall and filter screen (15), using the formation of pressure for the oil pump to provide the initial power, so that the mud turbine (6) began to rotate, the protruding ring 7-shaped slot (13) above the turbine (6) and the lower triangular pump body (1) ring 7-shaped recess (11) embedded, mud turbine (6) rotation driven by the upper connected triangular pump body (1) also rotates, T-shaped pump rod (2) and triangular pump body (1) embedded in the inner guide slot (14), when the triangular pump body (1) rotates, T-shaped pump rod (2) along the inner guide slot (14) in the upper shell (10) in the horizontal direction piston movement, through the T-shaped pump rod (2), one-way valve (3), one-way inlet (4), half-sphere sand screen (5), round piston disc (26), half-round piston disc (27) form the structure of the pump to achieve the action of pumping oil; mud turbine (6) below the hollow cylinder (7) connected by the rotation of the mud turbine (6) driven hollow cylinder (7) rotates, the hollow cylinder (7) inside the inclined guide slot (20) rotates, the protruding body piston rod (8) along the inclined guide slot (20) track vertical movement, protruding cylinder piston rod (8), three one-way hole piston (9), and loose-leaf (23) form the hydraulic structure, the self-cleaning chamber (17) in part of the crude oil compression into the hole column (18), so that the liquid along the hollow slot (19) compression to the self-cleaning nozzle (16), realize the effect of self-cleaning equipment.

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