Electric submersible pump device and method for lifting polymer-containing produced liquid and shear tube

Abstract

The electric submersible pump device comprises an oil outlet pipe, the upper end of the oil outlet pipe is connected with a pump body, the lower end of the oil outlet pipe is connected with a shear pipe set, an oil outlet shaft is arranged in the oil outlet pipe, an output shaft of the pump body is connected with the oil outlet shaft, the oil outlet shaft is provided with an oil outlet spiral disc, and the oil outlet spiral disc is connected with the shear pipe set. A shearing base shaft is arranged in the shearing pipe set and connected with an oil outlet shaft. A top shearing ring is fixedly arranged on the outer wall of the shearing base shaft, and a top shearing knife is arranged on the outer wall of the top shearing ring; the shearing base shaft is connected with a bottom shearing ring through a rotating reversing mechanism, and a bottom shearing knife is arranged on the outer wall of the bottom shearing ring. The rotating directions of the top shearing ring and the bottom shearing ring are opposite, so that the rotating directions of the bottom shearing knife and the top shearing knife are opposite, a petroleum polymer can be sheared twice, the shearing effect is guaranteed, and the lifting efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of oil extraction technology, specifically to an electric submersible pump device and method for lifting polymer-containing produced fluids, and a shearing pipe. Background Technology

[0002] As oilfields enter the late stages of development, tertiary oil recovery technologies are widely adopted to further enhance oil recovery rates, with polymer flooding technology seeing increasing application. However, in polymer flooding blocks, as polymer concentrations rise, polymer aging products adhere to or clog the electric pump inlet and protectors, severely impacting pump production, reducing lifting efficiency, and shortening pump operating cycles.

[0003] Existing lifting methods typically involve adding large amounts of water to the casing to dilute the polymer-containing oil. This method has low lifting efficiency and poor lifting effect. Furthermore, the bottom filter of existing lifting devices is prone to clogging after prolonged use, resulting in a shorter overall lifespan for the equipment. Currently, there is no specific device design to address the clogging of the suction inlet of the electro-pump for polymer-containing produced fluid; only some technological developments exist for preventing clogging in heavy oil pumps.

[0004] Announcement No. CN104373334B discloses a heavy oil anti-clogging device for a submersible electric pump protector. The device features a shaft within the upper connector cavity, from top to bottom, with an agitator and a screen assembly fixedly mounted. The upper connector has two radial through holes located above the agitator, each housing a flow valve (outlet and inlet). The screen plate of the screen assembly is fixed to the end face of a fixed sleeve using screws. The screen plate is circular and has axial perforations. Its beneficial effects include improving the heavy oil anti-clogging capability of the submersible electric pump protector, reducing or eliminating the blockage of the protector's breather hole by heavy oil, extending the protector's service life, and better suited for heavy oil, extra-heavy oil, and extremely heavy oil well production, thereby extending the service life of the submersible electric pump unit.

[0005] The drawback of this existing technology is that the stirring wheel is only set in one stage, which cannot effectively break up lumpy heavy oil.

[0006] Announcement No. CN203420918U discloses an anti-clogging device for the suction inlet of a submersible electric pump (SAP). An anti-clogging assembly is installed at the corresponding position of the suction inlet within the pump body. The shaft of the anti-clogging assembly is connected at one end to the SSP's protector via spline sleeves, and at the other end to the centrifugal pump shaft. The shaft of the anti-clogging assembly is fixedly mounted from top to bottom with an agitator, a spacer, another agitator, another spacer, and another agitator. Two or more blades are evenly distributed on the circumference of the agitator hub. The blade end faces are trapezoidal in shape radially outward from the hub. The agitator blades in the anti-clogging assembly are staggered circumferentially. Its beneficial effect is a reasonable structure that allows heavy oil to smoothly enter the centrifugal pump and be lifted to the surface, ensuring normal oil well production.

[0007] The drawback of this existing technology is that the three-stage stirring wheels rotate in the same direction, which cannot effectively break up lumpy heavy oil.

[0008] Announcement No. CN212536083U discloses a heavy oil anti-clogging device for a submersible electric pump protector, comprising a housing, with a first cavity and a second cavity respectively arranged on the left and right sides inside the housing, and a central shaft penetrating through the middle part inside the housing. A fastening cylinder is fixedly fitted on the outer wall of the central shaft, located inside the first cavity. An installation cylinder is fixedly connected to the outer wall of the fastening cylinder, and four V-shaped blades symmetrically distributed in pairs are fixedly connected to the outer wall of the installation cylinder. A rotating cylinder is fixedly connected to the outer side of the four V-shaped blades. Since the multiple V-shaped blades are tilted to the right as a whole, heavy oil can be drawn into the second cavity during rotation, thereby accelerating the flow rate of the heavy oil. If heavy oil clumps cannot be quickly broken up, the central shaft is rotated in the opposite direction to stir the heavy oil at the opening of the V-shaped blades, thereby increasing the contact area between the blades and the heavy oil, which is more conducive to breaking up the heavy oil.

[0009] The disadvantage of this prior art is that the stirring wheel is only set in one stage, which cannot effectively break up the lumpy heavy oil, and the V-shaped blades have limited shearing effect on the heavy oil lumps.

[0010] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of the present invention. Regarding the more technical features, technical problems to be solved, and beneficial effects of the present invention, the above-disclosed technical documents do not provide any technical inspiration. Summary of the Invention

[0011] In view of the above-mentioned defects in the prior art, the purpose of this invention is to provide an electric submersible pump device and method for lifting polymer-containing produced fluid, as well as a shearing pipe.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] On one hand, the present invention provides an electric submersible pump device for lifting polymer-containing produced fluid, including an oil outlet pipe, the upper end of which is connected to a pump body, and the lower end of which is connected to a shearing pipe assembly. An oil outlet shaft is disposed inside the oil outlet pipe, and the output shaft of the pump body is connected to the oil outlet shaft. The oil outlet shaft is provided with an oil outlet spiral disk. A shear base shaft is disposed in the shearing pipe assembly and is connected to the oil outlet shaft. A top shear ring is fixed to the outer wall of the shear base shaft, and a top shearing blade is disposed on the outer wall of the top shear ring. The shear base shaft is connected to a bottom shear ring through a rotation reversing mechanism, and a bottom shearing blade is disposed on the outer wall of the bottom shear ring.

[0014] Furthermore, the top shearing blade includes a top shearing main blade and a top shearing auxiliary blade. The top shearing blade has an arc-shaped cross-section, and the top shearing auxiliary blade is disposed in the arc-shaped opening of the top shearing main blade. The tip of the top shearing auxiliary blade faces the opposite direction to the tip of the top shearing main blade.

[0015] Specifically, the bottom shearing blade includes a bottom shearing main blade and a bottom shearing auxiliary blade. The bottom shearing blade has an arc-shaped cross-section. The bottom shearing auxiliary blade is disposed in the arc-shaped opening of the bottom shearing main blade, and the tip of the bottom shearing auxiliary blade faces the opposite direction to the tip of the bottom shearing main blade.

[0016] Specifically, the direction of the top shearing blade head is opposite to the direction of the bottom shearing blade head.

[0017] Furthermore, the rotation reversing mechanism includes a gear shaft, a bottom shear gear, and a bottom shear ring rotating gear;

[0018] Specifically, the shear base shaft is divided into two parts, including a front shaft and a rear shaft. A gear shaft extends from the center of the lower end of the front shaft, and a bottom shear gear is provided on the gear shaft. The rear shaft is fixedly connected to the gear shaft.

[0019] Specifically, the top shear ring is disposed on the outer wall of the front shaft, the bottom shear ring is disposed between the front shaft and the rear shaft, the inner wall of the bottom shear ring is provided with a bottom shear ring rotating gear, a planetary gear is disposed between the bottom shear ring rotating gear and the bottom shear gear, the bottom shear ring rotating gear meshes with the planetary gear, and the planetary gear meshes with the bottom shear gear;

[0020] Specifically, the planetary gear is connected to the wall of the tube where the shear base shaft is located via a planetary gear positioning rod, and the planetary gear is rotatably connected to the planetary gear positioning rod;

[0021] Specifically, bottom shear ring positioning plates are fixed at both ends of the bottom shear ring, and the planetary gear is located between the two bottom shear ring positioning plates.

[0022] Furthermore, a gear positioning bearing is provided at the bottom of the planetary gear positioning rod, and the planetary gear positioning rod is fixedly connected to the outer ring of the gear positioning bearing;

[0023] Specifically, the inner ring of the gear positioning bearing is fixedly connected to the rear section of the shear base shaft or the gear shaft, and a gear bearing connecting rod is fixedly attached to the outer wall of the outer ring of the gear positioning bearing. The gear bearing connecting rod is fixedly connected to the wall of the tube where the shear base shaft is located.

[0024] Furthermore, the shear tube assembly includes at least one shear tube, the lower end of the shear tube assembly is connected to a filter tube, each shear tube contains a shear shaft, and each filter tube contains a filter tube rotating shaft. The structures of the shear shaft and the filter tube rotating shaft are the same as those of the shear base shaft.

[0025] Specifically, the shear base shaft is fixedly provided with an oil supply spiral disk between the top shearing mechanism and the bottom shearing mechanism.

[0026] Furthermore, an oil supply pipe is provided between the oil outlet pipe and the shear pipe, between every two shear pipes, and between the shear pipe and the filter pipe. The shear pipe and the oil supply pipe, the oil outlet pipe and the oil supply pipe, and the filter pipe and the oil supply pipe are all connected by a connecting mechanism.

[0027] Specifically, the connecting mechanism includes a connecting pipe and a shaft connector;

[0028] Specifically, the oil delivery pipe is connected to the oil outlet pipe, shearing pipe, or filter pipe via a connecting pipe, and an oil delivery shaft is provided inside the oil delivery pipe. The oil delivery shaft is connected to the oil outlet shaft, shearing shaft, or filter pipe rotating shaft via a shaft connector.

[0029] Specifically, an oil delivery spiral disc is provided on the oil delivery shaft.

[0030] Furthermore, the connecting pipe includes a bottom connecting block, a top connecting block, and a connecting ring;

[0031] The bottom connecting block is fixedly installed at the top of the oil delivery pipe, the top of the shear pipe, or the top of the filter pipe; the top connecting block is fixedly installed at the bottom of the oil outlet pipe, the bottom of the oil delivery pipe, or the bottom of the shear pipe; the connecting ring is slidably sleeved on the outside of the top connecting block and the bottom connecting block, and the connecting ring connects and fixes the bottom connecting block and the top connecting block by connecting bolts, and a sealing ring is provided between the connecting ring and the bottom connecting block and the top connecting block.

[0032] Furthermore, within a connecting mechanism, the shaft connector is located above the bottom connecting block, and a positioning bearing connecting rod is fixed inside the bottom connecting block. A rotating shaft positioning bearing is fixed inside the positioning bearing connecting rod, and the rotating shaft positioning bearing cooperates with the corresponding oil delivery shaft, shearing shaft, or filter tube rotating shaft.

[0033] Furthermore, the shaft connector includes a retaining ring, a top positioning ring, and a bottom positioning ring; the top positioning ring can be inserted into the bottom positioning ring.

[0034] Specifically, the bottom positioning ring is provided with a positioning cavity, which includes a positioning hole that radially penetrates the bottom positioning ring and a positioning groove provided on the outer wall of the bottom positioning ring;

[0035] Specifically, the top positioning ring is provided with a locking cavity, which is a limiting hole that radially penetrates the top positioning ring, and the limiting hole corresponds to the positioning hole;

[0036] Specifically, a positioning rod is slidably disposed in the locking cavity, and a positioning plate is disposed at one end of the positioning rod near the center of the top positioning ring. A positioning spring is disposed between the positioning plate and the inner wall of the top positioning ring. The positioning spring is fixedly connected to the inner wall of the top positioning ring and the positioning plate. When the positioning spring is in its normal state, the positioning rod extends out of the locking cavity and can be inserted into the positioning hole of the positioning cavity.

[0037] Specifically, the fixing ring is slidably sleeved on the outer wall of the bottom positioning ring, the fixing ring is provided with a radial fixing bolt, and the fixing bolt is provided with a positioning rod moving head at the end inside the fixing ring, the positioning rod moving head can be engaged into the positioning groove;

[0038] Specifically, the top positioning ring and the bottom positioning ring are set at the two ends of the two adjacent shafts.

[0039] Furthermore, the sidewall of the filter tube is a filter mesh;

[0040] Specifically, a first convex ring is provided on the top outer wall of the filter tube, and the first convex ring is provided with a downward cleaning rod positioning cavity. The cleaning rod positioning cavity is an annular groove. The rear section of the filter tube shaft passes through the filter tube and is fixedly connected to the cleaning disc outside the filter tube.

[0041] Specifically, a cleaning rod is provided between the cleaning disc and the cleaning rod positioning cavity, the cleaning rod is fixedly connected to the cleaning disc, and the cleaning rod is slidably connected to the cleaning rod positioning cavity;

[0042] Specifically, the filter tube is further provided with a filter tube positioning rod inside, a second convex ring is provided on the inner wall of the upper end of the filter tube, the upper end of the filter tube positioning rod is connected to the convex ring, and the lower end of the filter tube positioning rod is fixedly connected to the gear bearing connecting rod through a fixing ring.

[0043] Furthermore, a sand-blocking rod bearing is provided at the bottom of the cleaning disc, the cleaning disc is fixedly connected to the inner ring of the sand-blocking rod bearing, and a sand-blocking rod positioning disc is fixed to the outer ring of the sand-blocking rod bearing;

[0044] Specifically, a sand-blocking rod is fixedly installed between the sand-blocking rod positioning plate and the first convex ring, the top end of the sand-blocking rod is connected to the first convex ring, the sand-blocking rod positioning plate is connected to the sand-blocking rod, and the sand-blocking rod is located outside the cleaning rod.

[0045] Secondly, the present invention provides a method for assembling pipes of an electric submersible pump device for lifting polymer-containing produced fluid. Assembling the electric submersible pump device for lifting polymer-containing produced fluid as described in this first aspect includes the following steps:

[0046] Insert the top positioning ring into the bottom positioning ring. The side wall of the positioning rod contacts the end face of the bottom positioning ring. Use a tool to press the positioning rod into the locking cavity. During this process, apply force to the bottom positioning ring so that the pressed-in positioning rod cannot fully spring back. Insert the top positioning ring completely into the bottom positioning ring. The positioning head of the positioning rod is first pressed into the locking cavity, and then moves outward under the action of the positioning spring and the positioning plate, so that the positioning rod passes through the locking cavity and inserts into the positioning cavity. The positioning head contacts the positioning cavity and locks the top positioning ring and the bottom positioning ring.

[0047] Place the positioning rod moving head into the positioning groove of the positioning cavity, adjust the position of the fixing ring, screw the fixing bolt into the positioning rod moving head, and tighten the fixing bolt to secure the fixing ring with the bottom positioning ring; fix the connecting ring, bottom connecting block, and top connecting block with the connecting bolt, and at this time the rotating shaft positioning bearing sits into the positioning bearing connecting rod.

[0048] Furthermore, when it is necessary to disassemble the entire device, unscrew the connecting bolts, push the connecting ring to move it downwards, thereby exposing the fixing ring, loosen the fixing bolts, move the fixing ring, so that the positioning rod moving head moves to the top of the positioning hole in the positioning cavity, screw in the fixing bolts, so that the positioning rod moving head moves inwards, push the positioning head inwards, pull the bottom positioning ring, so that the positioning rod disengages from the limiting hole of the positioning cavity, and the top positioning ring and the bottom positioning ring separate.

[0049] In three aspects, the present invention provides a method for operating an electric submersible pump device for lifting polymer-containing produced fluid, comprising the following steps:

[0050] When it is necessary to lift petroleum polymer, the pump body is controlled by the controller to drive the oil outlet shaft, oil delivery shaft, shear shaft, and filter tube shaft to rotate, which in turn drives the oil outlet spiral disc, oil delivery spiral disc, and all base shaft oil delivery spiral discs to rotate, sucking the petroleum polymer into the filter tube.

[0051] At this time, the top shear ring rotates, driving the top shear blade to rotate; the shear base shaft causes the bottom shear gear to rotate, driving the planetary gear to rotate; the planetary gear does not rotate around the shear base shaft, but drives the bottom shear ring to rotate in the opposite direction, driving the bottom shear ring to rotate in the opposite direction, driving the bottom shear blade to rotate in the opposite direction; the sand baffle positioning plate does not rotate; the cleaning plate rotates, causing the cleaning rod to rotate.

[0052] In four aspects, the present invention provides a bidirectional shearing tube, including a tube body, a shearing base shaft disposed within the tube body, a top shearing ring fixed to the outer wall of the shearing base shaft, and a top shearing blade disposed on the outer wall of the top shearing ring; the shearing base shaft is connected to a bottom shearing ring via a rotation reversing mechanism, and a bottom shearing blade is disposed on the outer wall of the bottom shearing ring.

[0053] Furthermore, the rotation reversing mechanism includes a gear shaft, a bottom shear gear, and a bottom shear ring rotating gear;

[0054] Specifically, the shear base shaft is divided into two parts, including a front shaft and a rear shaft. A gear shaft extends from the center of the lower end of the front shaft, and a bottom shear gear is provided on the gear shaft. The rear shaft is fixedly connected to the gear shaft.

[0055] Specifically, the top shear ring is disposed on the outer wall of the front shaft, the bottom shear ring is disposed between the front shaft and the rear shaft, the inner wall of the bottom shear ring is provided with a bottom shear ring rotating gear, a planetary gear is disposed between the bottom shear ring rotating gear and the bottom shear gear, the bottom shear ring rotating gear meshes with the planetary gear, and the planetary gear meshes with the bottom shear gear;

[0056] Specifically, the planetary gear is connected to the wall of the tube where the shear base shaft is located via a planetary gear positioning rod, and the planetary gear is rotatably connected to the planetary gear positioning rod;

[0057] Specifically, bottom shear ring positioning plates are fixed at both the upper and lower ends of the bottom shear ring, and the planetary gear is located between the two bottom shear ring positioning plates;

[0058] Specifically, the planetary gear positioning rod is provided with a gear positioning bearing at its bottom, and the planetary gear positioning rod is fixedly connected to the outer ring of the gear positioning bearing;

[0059] Specifically, the inner ring of the gear positioning bearing is fixedly connected to the rear section of the shear base shaft or the gear shaft, and a gear bearing connecting rod is fixedly attached to the outer wall of the outer ring of the gear positioning bearing. The gear bearing connecting rod is fixedly connected to the pipe wall of the pipe body.

[0060] Compared with the prior art, the present invention has the following advantages:

[0061] 1. The present invention can seal the entire pipeline while connecting the oil outlet pipe, oil delivery pipe, shearing pipe and filter pipe through the connecting ring, thereby ensuring the safety of the entire equipment. At the same time, by removing the sand baffle, the workers can easily rotate the fixing bolts, thereby facilitating the disassembly and installation of the entire equipment, making the entire equipment assemblable, thereby increasing the applicability of the equipment and reducing consumables.

[0062] 2. This invention uses a positioning spring to allow the positioning rod to move, thereby enabling the positioning spring to be inserted into the positioning cavity and locking cavity, thus positioning the upper and lower rotating shafts. This ensures that the rotating shafts inside the entire device are relatively fixed, guaranteeing that the rotation speed of the entire device is the same, thereby reducing the consumables of the entire device and improving the lifting efficiency of the device. At the same time, by moving the positioning rod head, the positioning head can be pushed to move the positioning rod inward, thereby disengaging the top positioning ring and the bottom positioning ring, facilitating the disassembly of the entire device, making the entire device assembleable, and thus improving the applicability of the device.

[0063] 3. This invention uses a top shearing main blade and a top shearing auxiliary blade to shear polymer-containing petroleum, thus facilitating subsequent lifting operations. Simultaneously, the bottom shearing gear drives the planetary gear to rotate, which in turn drives the bottom shearing ring gear to rotate. This causes the top and bottom shearing rings to rotate in opposite directions, which in turn causes the bottom and top shearing main blades to rotate in opposite directions. This allows the petroleum polymer to be sheared twice, ensuring shearing effectiveness, improving lifting efficiency, and ensuring the safety of the entire equipment, thereby extending the equipment's service life.

[0064] 4. This invention uses multiple sand-blocking rods and multiple filter tube positioning rods to prevent the filter tube from deforming, thereby ensuring the safety of the filter tube and improving the service life of the equipment. At the same time, the multiple sand-blocking rods can prevent large pieces of sand and gravel from impacting the filter tube, thereby further ensuring the safety of the filter tube.

[0065] 5. This invention uses the filter tube shaft to drive the cleaning disc to rotate, which in turn drives multiple cleaning rods to rotate around the filter tube shaft. This effectively cleans sand and other impurities from the outside of the filter tube, thereby improving the oil lifting efficiency and ensuring the safety of the filter tube, thus extending the service life of the equipment. Attached Figure Description

[0066] Figure 1 This is a schematic diagram of the main view of the present invention;

[0067] Figure 2 This is a schematic diagram of the bottom end of the present invention;

[0068] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0069] Figure 4 This is a schematic diagram of the internal top of the present invention;

[0070] Figure 5 This is a schematic diagram of the internal bottom of the present invention;

[0071] Figure 6 This is a schematic diagram of the connection mechanism of the present invention;

[0072] Figure 7 This is an enlarged schematic diagram of the internal bottom end of the present invention;

[0073] Figure 8 This is a schematic diagram of the cleaning and positioning mechanism of the present invention;

[0074] Figure 9 This is a schematic diagram of the internal structure of the connecting mechanism of the present invention;

[0075] Figure 10 This is a cross-sectional schematic diagram of the connecting mechanism of the present invention;

[0076] Figure 11 This is a schematic diagram of the positioning mechanism of the present invention;

[0077] Figure 12 This is a schematic diagram of the shearing mechanism of the present invention;

[0078] Figure 13 This is a schematic diagram of the bottom of the shearing mechanism of the present invention.

[0079] In the diagram: 1-Pump body; 101-Pump body fixing rod;

[0080] 2-Oil outlet pipe; 201-Oil outlet; 202-Oil outlet spiral disc; 203-Oil outlet shaft;

[0081] 3-Oil delivery pipe; 301-Oil delivery spiral disc; 302-Oil delivery shaft;

[0082] 4-Shear pipe; 401-Shear pipe oil delivery spiral disc; 402-Shear shaft;

[0083] 5-Sand baffle rod; 501-Sand baffle rod positioning plate; 502-Filter pipe oil delivery spiral disc; 503-Sand baffle rod bearing; 504-Sand baffle rod screw; 505-Filter pipe shaft;

[0084] 6-Connecting ring; 601-Connecting bolt; 602-Fixing ring; 603-Fixing bolt; 604-Top connecting block; 605-Bottom connecting block; 606-Rotary positioning bearing; 607-Positioning bearing connecting rod; 608-Top positioning ring; 609-Bottom positioning ring; 610-Positioning head; 611-Positioning spring; 612-Positioning plate; 613-Positioning cavity; 614-Positioning rod moving head; 615-Locking cavity; 616-Positioning rod;

[0085] 7-Top shearing main blade; 701-Bottom shearing main blade; 702-Top shearing ring; 703-Top shearing auxiliary blade; 704-Bottom shearing ring; 705-Bottom shearing auxiliary blade; 706-Planetary gear positioning rod; 707-Planetary gear; 708-Bottom shearing ring positioning plate; 709-Bottom shearing gear; 710-Bottom shearing ring rotating gear;

[0086] 8-Cleaning disc; 801-Cleaning rod; 802-Cleaning rod positioning ring; 803-Cleaning rod positioning cavity;

[0087] 9-Filter tube; 901-Filter tube positioning rod; 902-Gear bearing connecting rod; 903-Gear positioning bearing. Detailed Implementation

[0088] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0089] Example 1:

[0090] Please see Figures 1 to 5 The present invention provides an electric submersible pump device for lifting polymer-containing produced fluid, comprising a pump body 1, wherein an oil outlet pipe 2 is fixed to the pump body 1 by a pump body fixing rod 101, and an oil outlet 201 is provided at one end of the oil outlet pipe 2 near the pump body 1; the output shaft of the pump body 1 is connected to an oil outlet shaft 203, the oil outlet shaft 203 is located inside the oil outlet pipe 2, and an oil outlet spiral disc 202 is provided on the side wall of the oil outlet shaft 203.

[0091] The oil outlet pipe 2 is made of hard steel. The oil outlet 201 is located on the side wall of the oil outlet pipe 2 and is made of alloy material. The oil outlet 201 provides an outlet for oil. The oil outlet spiral disc 202 is made of alloy material. The oil outlet shaft 203 is made of alloy material. The pump body 1 can drive the oil outlet shaft 203 to rotate. The oil outlet shaft 203 can drive the oil outlet spiral disc 202 to rotate, so that oil is transported to the oil outlet 201.

[0092] It also includes a shear tube assembly, which includes at least one shear tube 4. A shear shaft 402 is installed inside the shear tube 4. The shear shaft 402 is fixedly connected to the oil outlet shaft 203. The lower end of the shear tube assembly is connected to a filter tube 9. A filter tube rotating shaft 505 is installed inside the filter tube 9. The filter tube rotating shaft 505 is fixedly connected to the shear shaft 402. A sand baffle 5 is provided on the outside of the filter tube 9. The side wall of the filter tube 9 is a filter mesh. The filter tube rotating shaft 505 is rotatably connected to the bottom of the filter tube 9 to achieve axial positioning of the filter tube rotating shaft 505.

[0093] The shearing tube 4 is made of hard steel, the filter tube 9 is made of alloy material, and the sand-blocking rod 5 is made of alloy material. The filter tube 9 is used to filter impurities such as sand and gravel in oil, and the sand-blocking rod 5 is used to prevent sand and gravel from squeezing the filter tube 9, thereby ensuring the safety of the filter tube 9.

[0094] The shearing shaft 402 or the filter tube rotating shaft 505 serves as the shearing base shaft. The shearing base shaft is provided with a top shearing mechanism and a bottom shearing mechanism from top to bottom. The top shearing mechanism includes a top shearing ring 702 and a top shearing main blade 7. The top shearing ring 702 is fixedly mounted on the shearing base shaft. At least two top shearing main blades 7 are arranged on the outer wall of the top shearing ring 702, and these at least two top shearing main blades 7 are evenly distributed circumferentially along the top shearing ring 702. The top shearing main blades 7 extend radially outward from the top shearing ring 702. The top shearing blade 7 has an arc-shaped structure; the bottom shearing mechanism includes a bottom shearing ring 704 and a bottom shearing blade 701. The bottom shearing ring 704 is mounted on the shearing base shaft via a rotation reversing mechanism. At least two bottom shearing blades 701 are arranged on the outer wall of the bottom shearing ring 704. The at least two bottom shearing blades 701 are evenly distributed circumferentially along the bottom shearing ring 704. The bottom shearing blades 701 extend radially outward along the bottom shearing ring 704 and have an arc-shaped structure.

[0095] The top shearing blade 7 has a blade head direction opposite to that of the bottom shearing blade 701. Under the action of the rotation reversing mechanism, the top shearing blade 7 and the bottom shearing blade 701 rotate in opposite directions. The top shearing ring 702 is made of alloy material and is used to fix the top shearing blade 7. The top shearing blade 7 is made of alloy material and is used to shear petroleum polymers. The bottom shearing ring 704 is made of alloy material and is used to fix the bottom shearing blade 701. The bottom shearing blade 701 is made of alloy material and is used to shear petroleum polymers.

[0096] The shearing shaft 402 has a shearing pipe oil delivery spiral disk 401 fixedly installed between the top shearing mechanism and the bottom shearing mechanism, and the filter pipe rotating shaft 505 has a filter pipe oil delivery spiral disk 502 fixedly installed between the top shearing mechanism and the bottom shearing mechanism.

[0097] The shear pipe oil delivery spiral disc 401 is made of hard steel, the shear shaft 402 is made of hard steel, and the shear pipe oil delivery spiral disc 401 is used to transport oil. The filter pipe oil delivery spiral disc 502 is made of hard steel, the filter pipe shaft 505 is made of hard steel, and the filter pipe oil delivery spiral disc 502 is used to transport oil.

[0098] Example 2:

[0099] Based on Example 1, combined with Figure 6 , Figure 9-11 In this embodiment, an oil delivery pipe 3 is provided between the oil outlet pipe 2 and the shear pipe 4, between every two shear pipes 4, and between the shear pipe 4 and the filter pipe 9. The shear pipe 4 and the oil delivery pipe 3, the oil outlet pipe 2 and the oil delivery pipe 3, and the filter pipe 9 and the oil delivery pipe 3 are all connected by a connecting mechanism.

[0100] The connecting mechanism includes a connecting pipe and a shaft connector. The oil delivery pipe 3 is connected to the oil outlet pipe 2, the shearing pipe 4, or the filter pipe 9 through the connecting pipe. An oil delivery shaft 302 is provided inside the oil delivery pipe 3. The oil delivery shaft 302 is connected to the oil outlet shaft 203, the shearing shaft 402, or the filter pipe rotating shaft 505 through the shaft connector. An oil delivery spiral disc 301 is provided on the oil delivery shaft 302.

[0101] The oil delivery shaft 302 is made of hard steel, and the oil delivery spiral disc 301 is made of alloy material. The oil delivery spiral disc 301 is provided so that the oil delivery pipe 3 can deliver oil upward.

[0102] Specifically, the connecting pipe includes a bottom connecting block 605, a top connecting block 604, and a connecting ring 6. The bottom connecting block 605 is fixedly installed on the top of the oil delivery pipe 3, the top of the shear pipe 4, or the top of the filter pipe 9. The top connecting block 604 is fixedly installed on the bottom of the oil outlet pipe 2, the bottom of the oil delivery pipe 3, or the bottom of the shear pipe 4. The connecting ring 6 is slidably sleeved on the outside of the top connecting block 604 and the bottom connecting block 605. The connecting ring 6 connects and fixes the bottom connecting block 605 and the top connecting block 604 by connecting bolts 601. A sealing ring is provided between the connecting ring 6 and the bottom connecting block 605 and the top connecting block 604.

[0103] The bottom connecting block 605, the top connecting block 604, and the connecting ring 6 are all made of hard steel. The connecting bolt 601 is made of alloy material. The bottom connecting block 605 is fixed to the top of the oil delivery pipe 3, the top of the shear pipe 4, or the top of the filter pipe 9 by welding. The top connecting block 604 is machined from the bottom of the oil outlet pipe 2, the bottom of the oil delivery pipe 3, or the bottom of the shear pipe 4. The connecting ring 6 connects the top connecting block 604 and the bottom connecting block 605 to fix the entire device. The connecting ring 6 ensures the sealing between the top connecting block 604 and the bottom connecting block 605. The connecting bolt 601 is used to position the connecting ring 6.

[0104] Furthermore, within a connecting mechanism, the shaft connector is located above the bottom connecting block 605. A positioning bearing connecting rod 607 is fixed inside the bottom connecting block 605, and a rotating shaft positioning bearing 606 is fixed inside the positioning bearing connecting rod 607. The rotating shaft positioning bearing 606 cooperates with the corresponding oil delivery shaft 302, shearing shaft 402, or filter tube rotating shaft 505.

[0105] The positioning bearing connecting rod 607 is made of alloy material and is integrally cast with the bottom connecting block 605. The contact surface between the positioning bearing connecting rod 607 and the rotating shaft positioning bearing 606 is precision machined to achieve positioning support for the rotating shaft positioning bearing 606. The rotating shaft positioning bearing 606 can ensure that its internal rotating shaft is always vertical. The rotating shaft positioning bearing 606 is pre-assembled on the oil delivery shaft 302, the shearing shaft 402, or the filter tube rotating shaft 505.

[0106] The shaft connector includes a fixed ring 602, a top positioning ring 608, and a bottom positioning ring 609. The top positioning ring 608 can be inserted into the bottom positioning ring 609. The bottom positioning ring 609 has a positioning cavity 613, which includes a positioning hole that radially penetrates the bottom positioning ring 609 and a positioning groove on the outer wall of the bottom positioning ring 609. The top positioning ring 608 has a locking cavity 615, which is a limiting hole that radially penetrates the top positioning ring 608 and corresponds to the positioning hole. A positioning rod 616 is slidably disposed in the locking cavity 615. A positioning plate 612 is disposed at one end of the positioning rod 616 near the center of the top positioning ring 608. A positioning spring 611 is disposed between the positioning plate 612 and the inner wall of the top positioning ring 608. The positioning spring 611 is positioned between the inner wall of the top positioning ring 608 and the positioning plate 612. The positioning plate 612 is fixedly connected. When the positioning spring 611 is in its normal state, the positioning rod 616 extends out of the locking cavity 615 and can be inserted into the positioning hole of the positioning cavity 613. The fixing ring 602 is slidably sleeved on the outer wall of the bottom positioning ring 609. The fixing ring 602 is provided with a radial fixing bolt 603. The end of the fixing bolt 603 inside the fixing ring 602 is provided with a positioning rod moving head 614. The positioning groove in the positioning cavity 613 is a T-shaped groove. The positioning rod moving head 614 can push the positioning rod 616 out of the positioning hole when the fixing bolt 603 is screwed in. The positioning rod moving head 614 can slide down with the fixing ring 602 and get into the T-shaped groove. At this time, the fixing bolt 603 is tightened. Under the action of pre-tightening force, the fixing ring 602 is locked. At this time, the positioning rod 616 is located in the positioning hole, and the top positioning ring 608 and the bottom positioning ring 60 are locked together.

[0107] The positioning cavity 613, locking cavity 615, positioning rod 616, positioning plate 612, positioning spring 611, fixing bolt 603, and positioning rod moving head 614 constitute a positioning mechanism. At least two positioning mechanisms are provided and are evenly distributed circumferentially along the top positioning ring 608 and the bottom positioning ring 609.

[0108] The fixing ring 602 is made of alloy material and prevents oil from entering the top positioning ring 608, thus ensuring the safety of the positioning rod 616. The top positioning ring 608 and the bottom positioning ring 609 are both made of hard steel. The top positioning ring 608 and the bottom positioning ring 609 work together to connect multiple rotating shafts. The positioning plate 612 and the positioning rod 616 are both made of alloy material. The positioning spring 611 is spot-welded to the bottom positioning ring 60 and the positioning plate 612 to prevent the positioning rod 616 from popping out of the locking cavity 615. The fixing bolt 603 and the positioning rod moving head 614 are both made of alloy material. The positioning rod moving head 614 is a nut. The positioning head 610 of the positioning rod 616 is arc-shaped, which reduces the positional requirements of the positioning rod 616 when installing and removing the bottom positioning ring 609.

[0109] The top positioning ring 608 and the bottom positioning ring 609 are set on the two ends of two adjacent shafts and are obtained by machining. In this embodiment, the top positioning ring 608 is set at the bottom of the oil outlet shaft 202, the bottom of the oil delivery shaft 302, or the bottom of the shearing shaft 402, and the bottom positioning ring 609 is set at the top of the oil delivery shaft 302, the top of the shearing shaft 402, or the top of the filter tube rotating shaft 505.

[0110] Example 3:

[0111] Based on Example 2, this example provides a method for assembling pipes of an electric submersible pump device for lifting polymer-containing produced fluid, specifically including the following steps:

[0112] Before using this device, insert the top positioning ring 608 into the bottom positioning ring 609, with the side wall of the positioning rod 616 in contact with the end face of the bottom positioning ring 609. Use a tool to press the positioning rod 616 into the locking cavity 615, applying force to the bottom positioning ring 609 during this process to prevent the pressed-in positioning rod 616 from fully rebounding. Then, fully insert the top positioning ring 608 into the bottom positioning ring 609. The positioning head 610 of the positioning rod 616 is first pressed into the locking cavity 615, and then moves outward under the action of the positioning spring 611 and the positioning plate 612, causing the positioning rod 616 to pass through the locking cavity 615 and insert. Positioning cavity 613, positioning head 610 contacts and locks top positioning ring 608 and bottom positioning ring 609; positioning rod moving head 614 is placed into T-slot of positioning cavity 613, position of fixing ring 602 is adjusted, fixing bolt 603 is screwed into positioning rod moving head 614, and fixing bolt 603 is tightened to secure fixing ring 602 and bottom positioning ring 609; connecting bolt 601 is used to fix connecting ring 6, bottom connecting block 605 and top connecting block 604. At this time, rotating shaft positioning bearing 606 sits into positioning bearing connecting rod 607, thereby fixing and sealing the entire equipment.

[0113] When the entire device needs to be disassembled, the worker unscrews the connecting bolt 601, further pushes the connecting ring 6, causing the connecting ring 6 to move downwards, thus exposing the fixing ring 602. The fixing bolt 603 is loosened, and the fixing ring 602 is moved, causing the positioning rod moving head 614 to move to the top of the positioning hole in the positioning cavity 613. The fixing bolt 603 is screwed in, causing the positioning rod moving head 614 to move inwards, pushing the positioning head 610 inwards, pulling the bottom positioning ring 609, causing the positioning rod 616 to disengage from the limiting hole of the positioning cavity 613, and causing the top positioning ring 608 and the bottom positioning ring 609 to separate, thereby achieving the purpose of disassembly.

[0114] Example 4:

[0115] Based on Example 2, combined with Figure 12-13 In this embodiment, a top shearing auxiliary blade 703 is provided on the outer wall of the top shearing ring 702. The top shearing auxiliary blade 703 corresponds one-to-one with the top shearing main blade 7. The top shearing auxiliary blade 703 is disposed in the arc-shaped opening of the top shearing main blade 7. The top shearing auxiliary blade 703 is sharpened, and the tip of the top shearing auxiliary blade 703 faces the opposite direction to the tip of the top shearing main blade 7, thereby ensuring the shearing effect. The top shearing auxiliary blade 703 is made of alloy material.

[0116] The outer wall of the bottom shearing ring 704 is provided with a bottom shearing auxiliary blade 705, which corresponds one-to-one with the bottom shearing main blade 701. The bottom shearing auxiliary blade 705 is set in the arc-shaped opening of the bottom shearing main blade 701. The bottom shearing auxiliary blade 705 is sharpened, and the tip of the bottom shearing auxiliary blade 705 faces the opposite direction to the tip of the bottom shearing main blade 701, thereby ensuring the shearing effect. The bottom shearing auxiliary blade 705 is made of alloy material.

[0117] The shear base shaft is divided into two parts, including a front shaft and a rear shaft. A gear shaft extends from the lower center of the front shaft, and a bottom shear gear 709 is mounted on the gear shaft. The rear shaft is threadedly connected to the gear shaft. A top shear ring 702 is mounted on the outer wall of the front shaft, and a bottom shear ring 704 is positioned between the front and rear shafts. A bottom shear ring rotating gear 710 is mounted on the inner wall of the bottom shear ring 704. A planetary gear 707 is positioned between the bottom shear ring rotating gear 710 and the bottom shear gear 709. The planetary gear 707 is connected to the shear base shaft via a planetary gear positioning rod 706. The tube 4 or filter tube 9 is fixedly connected. The planetary gear 707 is rotatably connected to the planetary gear positioning rod 706. The bottom shear ring rotating gear 710 meshes with the planetary gear 707, and the planetary gear 707 meshes with the bottom shear gear 709. Bottom shear ring positioning plates 708 are fixed at both ends of the bottom shear ring 704. The planetary gear 707 is located between the two bottom shear ring positioning plates 708. The bottom shear ring positioning plates 708 can ensure that the bottom shear ring rotating gear 710 is always meshed with the planetary gear 707, thereby ensuring the rotation effect of the bottom shear ring 704.

[0118] The bottom shearing ring positioning plate 708 is made of alloy material. The bottom shearing ring rotating gear 710 can drive the bottom shearing ring 704 to rotate by meshing with the planetary gear 707. At least three planetary gears 707 are evenly distributed circumferentially connected to the inner side of the bottom shearing ring rotating gear 710. The bottom shearing gear 709 can drive the planetary gears 707 to rotate, thereby causing the bottom shearing ring rotating gear 710 and the bottom shearing gear 709 to rotate in opposite directions. This makes the rotation direction of the top shearing blade 7 opposite to that of the bottom shearing blade 701, thereby further ensuring the shearing effect and thus ensuring the lifting effect of the entire equipment.

[0119] The planetary gear positioning rod 706 is made of alloy material and is used to position the planetary gear 707, thereby ensuring that the planetary gear 707 does not rotate with the shear base shaft.

[0120] The planetary gear positioning rod 706 is provided with a gear positioning bearing 903 at its bottom. The planetary gear positioning rod 706 is fixedly connected to the outer ring of the gear positioning bearing 903. The inner ring of the gear positioning bearing 903 is fixedly connected to the rear section shaft of the shear base shaft or the gear shaft. A gear bearing connecting rod 902 is fixedly attached to the outer wall of the outer ring of the gear positioning bearing 903. The gear bearing connecting rod 902 is fixedly connected to the corresponding shear tube 4 or filter tube 9.

[0121] The gear bearing connecting rod 902 is made of alloy material, and the gear bearing connecting rod 902 positions the gear positioning bearing 903. The planetary gear positioning rod 706 is connected to the outer ring of the gear positioning bearing 903 through a socket.

[0122] Example 5:

[0123] Based on Example 4, combined with Figure 7-8 , Figure 12 In this embodiment, a first convex ring is provided on the top outer wall of the filter tube 9. The first convex ring is provided with a downward-facing cleaning rod positioning cavity 803. The cleaning rod positioning cavity 803 is an annular groove. The rear section of the filter tube shaft 505 extends out of the filter tube 9. The rear section of the filter tube shaft 505 is fixedly connected to the cleaning disc 8 outside the filter tube 9. A cleaning rod 801 is provided between the cleaning disc 8 and the cleaning rod positioning cavity 803. The cleaning rod 801 is fixedly connected to the cleaning disc 8. The cleaning rod 801 is slidably connected to the cleaning rod positioning cavity 803. Multiple cleaning rods 801 are fixedly connected to each other by a cleaning rod positioning ring 802. The cleaning rod positioning ring 802 is slidably connected to the cleaning rod positioning cavity 803. A filter tube positioning rod 901 is also provided inside the filter tube 9. A second convex ring is provided on the upper inner wall of the filter tube 9. The upper end of the filter tube positioning rod 901 is connected to the convex ring. The lower end of the filter tube positioning rod 901 is fixedly connected to the gear bearing connecting rod 902 by a fixing ring.

[0124] The cleaning rod positioning cavity 803 is made of hard steel, and the filter tube positioning rod 901 is made of alloy material. The filter tube positioning rod 901 can prevent the filter tube 9 from deforming, thereby ensuring the safety of the filter tube 9. The cleaning disc 8 is made of alloy material and is used to position multiple cleaning rods 801. The cleaning rod 801 is made of alloy material and fits against the filter tube 9. The cleaning rod 801 can clean sand and other impurities from the outside of the filter tube 9, thereby ensuring the safety of the filter tube 9. The cleaning rod positioning ring 802 is made of alloy material and is used to position multiple cleaning rods 801.

[0125] The bottom of the cleaning disc 8 is provided with a sand-blocking rod bearing 503. The cleaning disc 8 is fixedly connected to the inner ring of the sand-blocking rod bearing 503. The outer ring of the sand-blocking rod bearing 503 is fixed with a sand-blocking rod positioning disc 501. A sand-blocking rod 5 is fixedly arranged between the sand-blocking rod positioning disc 501 and the first convex ring. A sand-blocking rod screw 504 is fixed to the top of the sand-blocking rod 5. The top of the sand-blocking rod screw 504 is fastened to the first convex ring. The sand-blocking rod positioning disc 501 is fixedly connected to the sand-blocking rod 5. The sand-blocking rod 5 is located outside the cleaning rod 801.

[0126] The sand-blocking rod bearing 503 is used to position the sand-blocking rod positioning plate 501. The sand-blocking rod positioning plate 501 is made of hard steel and is used to position multiple sand-blocking rods 5.

[0127] Example 6:

[0128] Based on Example 5, this example provides a method for operating an electric submersible pump device for lifting polymer-containing produced fluid, specifically including the following steps:

[0129] When it is necessary to lift petroleum polymer, the operator controls the pump body 1 through the controller, which drives the oil outlet shaft 203 to rotate, which in turn drives the oil outlet spiral disk 202 to rotate, which in turn drives the oil delivery shaft 302 to rotate, which in turn drives the oil delivery spiral disk 301 to rotate, which in turn drives the shear shaft 402 to rotate, which in turn drives the shear pipe oil delivery spiral disk 401 to rotate, and so on, until finally driving the filter pipe shaft 505 to rotate, which in turn drives the filter pipe oil delivery spiral disk 502 to rotate, thereby sucking the petroleum polymer into the filter pipe 9;

[0130] At this time, the sand-blocking rod positioning plate 501 does not rotate due to the action of the sand-blocking rod bearing 503.

[0131] At this time, due to the action of the shear base shaft, the top shear ring 702 rotates, thereby driving the top shear main blade 7 and the top shear secondary blade 703 to rotate. At the same time, the bottom shear gear 709 rotates, thereby driving the planetary gear 707 to rotate. At this time, due to the action of the gear positioning bearing 903 and the top shear ring 702, the planetary gear 707 does not rotate around the shear base shaft, thereby driving the bottom shear ring rotating gear 710 to rotate in the opposite direction, thereby driving the bottom shear ring 704 to rotate in the opposite direction, thereby driving the bottom shear main blade 701 and the bottom shear secondary blade 705 to rotate in the opposite direction. Thus, the top shear main blade 7 and the bottom shear main blade 701 shear the petroleum polymer, and at the same time, the shearing directions of the top shear main blade 7 and the bottom shear main blade 701 are opposite.

[0132] At this time, the cleaning disc 8 rotates due to the action of the filter tube shaft 505, which in turn causes the cleaning rod 801 to rotate, thereby preventing impurities such as sand and gravel from accumulating on the outside of the filter tube 9, thus ensuring the safety of the filter tube 9.

[0133] At this time, due to the action of the filter tube shaft 505, the filter tube oil delivery spiral disk 502 rotates, thereby conveying the polymer sheared by the bottom shearing blade 701 upward. When it is further conveyed into the shearing tube 4, it is sheared and conveyed again, thereby breaking up the oil polymer, thus ensuring the lifting efficiency of the polymer, and further lifting it upward into the oil delivery pipe 3. Then, due to the action of the oil delivery shaft 302, the oil delivery spiral disk 301 rotates, thereby conveying the broken oil into the oil outlet pipe 2. Furthermore, the rotation of the oil outlet shaft 203 causes the oil outlet spiral disk 202 to rotate, thereby lifting the broken oil to the oil outlet 201, thus achieving the purpose of lifting the oil.

[0134] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0135] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0136] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0137] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0138] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electric submersible pump device for lifting polymer-containing produced fluid, comprising an oil outlet pipe, an upper end of which is connected to a pump body, a lower end of which is connected to a shear pipe assembly, an oil outlet shaft disposed within the oil outlet pipe, an output shaft of the pump body connected to the oil outlet shaft, and an oil outlet shaft equipped with an oil outlet spiral disc, characterized in that, The shear tube assembly is equipped with a shear base shaft, which is connected to the oil outlet shaft. A top shearing ring is fixed to the outer wall of the shearing base shaft, and a top shearing blade is provided on the outer wall of the top shearing ring; the shearing base shaft is connected to a bottom shearing ring through a rotation reversing mechanism, and a bottom shearing blade is provided on the outer wall of the bottom shearing ring.

2. The electric submersible pump device for lifting polymer-containing produced fluid according to claim 1, characterized in that, The top shearing blade includes a top shearing main blade and a top shearing secondary blade. The top shearing blade has an arc-shaped cross-section. The top shearing secondary blade is disposed in the arc-shaped opening of the top shearing main blade, and the tip of the top shearing secondary blade faces the opposite direction to the tip of the top shearing main blade. The bottom shearing blade includes a bottom shearing main blade and a bottom shearing secondary blade. The bottom shearing blade has an arc-shaped cross-section. The bottom shearing secondary blade is disposed in the arc-shaped opening of the bottom shearing main blade, and the tip of the bottom shearing secondary blade faces the opposite direction to the tip of the bottom shearing main blade. The direction of the top shearing blade is opposite to that of the bottom shearing blade.

3. The electric submersible pump device for lifting polymer-containing produced fluid according to claim 1, characterized in that, The rotation reversing mechanism includes a gear shaft, a bottom shearing gear, and a bottom shearing ring rotating gear; The shear base shaft is divided into two parts, including a front shaft and a rear shaft. A gear shaft extends from the center of the lower end of the front shaft, and a bottom shear gear is provided on the gear shaft. The rear shaft is fixedly connected to the gear shaft. The top shear ring is disposed on the outer wall of the front shaft, the bottom shear ring is disposed between the front shaft and the rear shaft, the inner wall of the bottom shear ring is provided with a bottom shear ring rotating gear, a planetary gear is disposed between the bottom shear ring rotating gear and the bottom shear gear, the bottom shear ring rotating gear meshes with the planetary gear, and the planetary gear meshes with the bottom shear gear; The planetary gear is connected to the wall of the tube where the shear base shaft is located via a planetary gear positioning rod, and the planetary gear is rotatably connected to the planetary gear positioning rod. Bottom shear ring positioning plates are fixed at both ends of the bottom shear ring, and the planetary gear is located between the two bottom shear ring positioning plates.

4. The electric submersible pump device for lifting polymer-containing produced fluid according to claim 3, characterized in that, The planetary gear positioning rod is provided with a gear positioning bearing at its bottom, and the planetary gear positioning rod is fixedly connected to the outer ring of the gear positioning bearing; The inner ring of the gear positioning bearing is fixedly connected to the rear section of the shear base shaft or the gear shaft, and a gear bearing connecting rod is fixedly attached to the outer wall of the outer ring of the gear positioning bearing. The gear bearing connecting rod is fixedly connected to the wall of the tube where the shear base shaft is located.

5. An electric submersible pump device for lifting polymer-containing produced fluid according to claim 4, characterized in that, The shear tube group is provided with at least one shear tube, the lower end of the shear tube group is connected to a filter tube, each shear tube is provided with a shear shaft, and each filter tube is provided with a filter tube rotating shaft. The structure of the shear shaft and the filter tube rotating shaft is the same as that of the shear base shaft. The shearing base shaft is fixedly equipped with an oil delivery spiral disc between the top shearing mechanism and the bottom shearing mechanism.

6. An electric submersible pump device for lifting polymer-containing produced fluid according to claim 5, characterized in that, An oil supply pipe is provided between the oil outlet pipe and the shear pipe, between every two shear pipes, and between the shear pipe and the filter pipe. The shear pipe and the oil supply pipe, the oil outlet pipe and the oil supply pipe, and the filter pipe and the oil supply pipe are all connected by a connecting mechanism. The connecting mechanism includes a connecting pipe and a shaft connector; The oil delivery pipe is connected to the oil outlet pipe, shearing pipe, or filter pipe via a connecting pipe. An oil delivery shaft is installed inside the oil delivery pipe, and the oil delivery shaft is connected to the oil outlet shaft, shearing shaft, or filter pipe rotating shaft via a shaft connector. An oil delivery spiral disc is provided on the oil delivery shaft.

7. An electric submersible pump device for lifting polymer-containing produced fluid according to claim 6, characterized in that, The connecting pipe includes a bottom connecting block, a top connecting block, and a connecting ring; The bottom connecting block is fixedly installed at the top of the oil delivery pipe, the top of the shear pipe, or the top of the filter pipe; the top connecting block is fixedly installed at the bottom of the oil outlet pipe, the bottom of the oil delivery pipe, or the bottom of the shear pipe; the connecting ring is slidably sleeved on the outside of the top connecting block and the bottom connecting block, and the connecting ring connects and fixes the bottom connecting block and the top connecting block by connecting bolts, and a sealing ring is provided between the connecting ring and the bottom connecting block and the top connecting block.

8. An electric submersible pump device for lifting polymer-containing produced fluid according to claim 7, characterized in that, Within a connecting mechanism, the shaft connector is located above the bottom connecting block. A positioning bearing connecting rod is fixed inside the bottom connecting block, and a rotating shaft positioning bearing is fixed inside the positioning bearing connecting rod. The rotating shaft positioning bearing engages with the corresponding oil delivery shaft, shearing shaft, or filter tube rotating shaft.

9. An electric submersible pump device for lifting polymer-containing produced fluid according to claim 8, characterized in that, The shaft connector includes a retaining ring, a top positioning ring, and a bottom positioning ring; the top positioning ring can be inserted into the bottom positioning ring. The bottom positioning ring is provided with a positioning cavity, which includes a positioning hole that radially penetrates the bottom positioning ring and a positioning groove provided on the outer wall of the bottom positioning ring. The top positioning ring is provided with a locking cavity, which is a limiting hole that radially penetrates the top positioning ring, and the limiting hole corresponds to the positioning hole; A positioning rod is slidably disposed in the locking cavity. A positioning plate is disposed at one end of the positioning rod near the center of the top positioning ring. A positioning spring is disposed between the positioning plate and the inner wall of the top positioning ring. The positioning spring is fixedly connected to the inner wall of the top positioning ring and the positioning plate. When the positioning spring is in the normal state, the positioning rod extends out of the locking cavity and can be inserted into the positioning hole of the positioning cavity. The fixed ring is slidably sleeved on the outer wall of the bottom positioning ring. The fixed ring is provided with radial fixing bolts. The end of the fixing bolt inside the fixed ring is provided with a positioning rod moving head. The positioning rod moving head can be engaged into the positioning groove. The top positioning ring and the bottom positioning ring are set at the two ends of the two adjacent shafts.

10. An electric submersible pump device for lifting polymer-containing produced fluid according to claim 6, characterized in that, The sidewall of the filter tube is a filter mesh; The filter tube has a first protruding ring on its top outer wall. The first protruding ring has a downward-facing cleaning rod positioning cavity. The cleaning rod positioning cavity is an annular groove. The rear section of the filter tube shaft passes through the filter tube and is fixedly connected to the cleaning disc outside the filter tube. A cleaning rod is provided between the cleaning disc and the cleaning rod positioning cavity. The cleaning rod is fixedly connected to the cleaning disc and slidably connected to the cleaning rod positioning cavity. The filter tube is also provided with a filter tube positioning rod inside. A second convex ring is provided on the inner wall of the upper end of the filter tube. The upper end of the filter tube positioning rod is connected to the convex ring. The lower end of the filter tube positioning rod is fixedly connected to the gear bearing connecting rod through a fixing ring.

11. An electric submersible pump device for lifting polymer-containing produced fluid according to claim 10, characterized in that, The bottom of the cleaning disc is provided with a sand-blocking rod bearing, the cleaning disc is fixedly connected to the inner ring of the sand-blocking rod bearing, and a sand-blocking rod positioning disc is fixed to the outer ring of the sand-blocking rod bearing; A sand-blocking rod is fixedly installed between the positioning plate of the sand-blocking rod and the first convex ring. The top end of the sand-blocking rod is connected to the first convex ring. The positioning plate of the sand-blocking rod is connected to the sand-blocking rod. The sand-blocking rod is located outside the cleaning rod.

12. A method for assembling pipes and tubes of an electric submersible pump device for lifting polymer-containing produced fluid, characterized in that, Assembling the electric submersible pump device for lifting polymer-containing produced fluid as described in claim 9 includes the following steps: Insert the top positioning ring into the bottom positioning ring. The side wall of the positioning rod contacts the end face of the bottom positioning ring. Use a tool to press the positioning rod into the locking cavity. During this process, apply force to the bottom positioning ring so that the pressed-in positioning rod cannot fully spring back. Insert the top positioning ring completely into the bottom positioning ring. The positioning head of the positioning rod is first pressed into the locking cavity, and then moves outward under the action of the positioning spring and the positioning plate, so that the positioning rod passes through the locking cavity and inserts into the positioning cavity. The positioning head contacts the positioning cavity and locks the top positioning ring and the bottom positioning ring. Place the positioning rod moving head into the positioning groove of the positioning cavity, adjust the position of the fixing ring, screw the fixing bolt into the positioning rod moving head, and tighten the fixing bolt to secure the fixing ring with the bottom positioning ring; fix the connecting ring, bottom connecting block, and top connecting block with the connecting bolt, and at this time the rotating shaft positioning bearing sits into the positioning bearing connecting rod.

13. The assembly method of pipes and tubes of an electric submersible pump device for lifting polymer-containing produced fluid according to claim 12, characterized in that, When the entire device needs to be disassembled, unscrew the connecting bolts, push the connecting ring to move it downwards, thereby exposing the fixing ring. Loosen the fixing bolts, move the fixing ring, and move the positioning rod moving head to the top of the positioning hole in the positioning cavity. Screw in the fixing bolts to move the positioning rod moving head inwards, push the positioning head inwards, and pull the bottom positioning ring to disengage the positioning rod from the limiting hole of the positioning cavity, thus separating the top positioning ring and the bottom positioning ring.

14. A method for operating an electric submersible pump device for lifting polymer-containing produced fluid, characterized in that, Using the electro-submersible pump device for lifting polymer-containing produced fluid as described in claim 11, the method includes the following steps: When it is necessary to lift petroleum polymer, the pump body is controlled by the controller to drive the oil outlet shaft, oil delivery shaft, shear shaft, and filter tube shaft to rotate, thereby driving the oil outlet spiral disk, oil delivery spiral disk, and all base shaft oil delivery spiral disks to rotate, sucking the petroleum polymer into the filter tube. At this time, the top shear ring rotates, driving the top shear blade to rotate; the shear base shaft causes the bottom shear gear to rotate, driving the planetary gear to rotate; the planetary gear does not rotate around the shear base shaft, but drives the bottom shear ring to rotate in the opposite direction, driving the bottom shear ring to rotate in the opposite direction, driving the bottom shear blade to rotate in the opposite direction; the sand baffle positioning plate does not rotate; the cleaning plate rotates, causing the cleaning rod to rotate.

15. A bidirectional shearing tube, comprising a tube body, characterized in that, A shear base shaft is provided inside the tube, a top shear ring is fixed to the outer wall of the shear base shaft, and a top shear blade is provided on the outer wall of the top shear ring; The shear base shaft is connected to the bottom shear ring via a rotation reversing mechanism, and the bottom shear ring is provided with a bottom shear blade on its outer wall.

16. A bidirectional shearing tube according to claim 15, characterized in that, The rotation reversing mechanism includes a gear shaft, a bottom shearing gear, and a bottom shearing ring rotating gear; The shear base shaft is divided into two parts, including a front shaft and a rear shaft. A gear shaft extends from the center of the lower end of the front shaft, and a bottom shear gear is provided on the gear shaft. The rear shaft is fixedly connected to the gear shaft. The top shear ring is disposed on the outer wall of the front shaft, the bottom shear ring is disposed between the front shaft and the rear shaft, the inner wall of the bottom shear ring is provided with a bottom shear ring rotating gear, a planetary gear is disposed between the bottom shear ring rotating gear and the bottom shear gear, the bottom shear ring rotating gear meshes with the planetary gear, and the planetary gear meshes with the bottom shear gear; The planetary gear is connected to the wall of the tube where the shear base shaft is located via a planetary gear positioning rod, and the planetary gear is rotatably connected to the planetary gear positioning rod. The bottom shear ring is fixed with bottom shear ring positioning plates at both ends, and the planetary gear is located between the two bottom shear ring positioning plates. The planetary gear positioning rod is provided with a gear positioning bearing at its bottom, and the planetary gear positioning rod is fixedly connected to the outer ring of the gear positioning bearing; The inner ring of the gear positioning bearing is fixedly connected to the rear section of the shear base shaft or the gear shaft, and a gear bearing connecting rod is fixedly attached to the outer wall of the outer ring of the gear positioning bearing. The gear bearing connecting rod is fixedly connected to the wall of the tube body.

Images