A driving component, an underground fluid self-driven extraction device and an extraction method

Abstract

The present invention provides a driving member, an underground fluid self-driven extraction device and an extraction method, which include main components such as a driving piston and an energy replenisher. The driving piston is provided with a power sensing member, a sealing member and a driving member. The power sensing component can realize the perception of power and signals. The power member can adaptively adjust the pressure in the balance rubber cylinder according to the change of the fluid pressure in the well and provide the upward driving force of the driving piston. The sealing member can realize the efficient sealing of the driving piston and separate the fluid in the oil pipe, and realizes the matching of the sealing pressure and the external pressure through the sealing rubber cylinder and the liquid therein, having better sealing performance, especially not interfering with the flow rate and realizing the stability of the flow rate. The adaptive control of sealing and driving is realized through sensors, controllers and signal transceivers, improving the control intelligence, reducing the manual management cost and improving the use efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of drainage and gas extraction of gas wells, and particularly relates to a driving member, an underground fluid self-driving extraction device and an extraction method. Background Art

[0002] Traditional plunger extraction of underground fluids has problems such as poor plunger sealing, unstable flow rate, high manual management cost, and low intelligence level. For example, the invention patent application with the patent application number CN201510213971.9 discloses an intelligent plunger type drainage and gas production device, which mainly completes the gas-liquid barrier in the gas well through the rubber sealing sleeve outside the switch housing, completely relying on the elastic deformation of the rubber sealing sleeve itself, unable to withstand large pressures and pressure changes, and is extremely easy to wear and become invalid, requiring frequent replacement of the rubber sealing sleeve, resulting in extremely unstable flow rate and increased management costs. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems of poor plunger sealing, unstable flow rate, high management cost, and low use efficiency in the prior art.

[0004] To achieve the above object, the present invention provides a driving member, including a housing, a driving motor disposed in the housing, and a driving blade disposed at the bottom of the housing;

[0005] The housing includes an upper housing of the driver and a lower housing of the driver;

[0006] An annular retaining ring and a balance rubber cylinder are disposed in the upper housing of the driver. The bottom of the balance rubber cylinder is buckled upward, and the outer edge of the top of the balance rubber cylinder touches the bottom surface of the annular retaining ring through a driver gasket;

[0007] The side wall of the upper housing of the driver above the annular retaining ring is provided with a driver fluid channel and a power communication upper channel port;

[0008] The driving motor is disposed at the bottom of the lower housing of the driver. The driving shaft of the driving motor passes downward through a driving shaft hole opened at the bottom of the lower housing of the driver and is connected to a driving blade outside the bottom of the lower housing of the driver;

[0009] A shoulder is disposed at the top of the lower housing of the driver, and an annular boss is disposed on the inner side of the top of the shoulder;

[0010] A driver liquid injection channel is disposed on the side wall of the lower housing of the driver below the shoulder;

[0011] The bottom of the upper housing of the driver abuts against the shoulder;

[0012] The bottom of the outer edge of the top touches the top surface of the annular boss;

[0013] A power communication lower channel opening is formed on the side wall of the lower housing of the driver; insulating coolant and high-pressure nitrogen are injected into the lower housing of the driver.

[0014] Meanwhile, an underground fluid self-driven extraction device is provided, which includes a driving piston provided with the aforementioned driving member, and further includes a sealing member arranged on the top of the driving member;

[0015] The sealing member includes a sealing rubber cylinder, an inverted T-shaped sealing sliding sleeve, an upper sealing gland, an upper sealing gasket, a sealing support, a lower sealing gasket, a lower sealing gland, and two racks symmetrically arranged inside the sealing rubber cylinder, two sealing motors symmetrically arranged, and two sealing motor supports symmetrically arranged;

[0016] The cylinder of the inverted T-shaped sealing sliding sleeve extends upward beyond the top opening of the sealing rubber cylinder; the upper sealing gland is sleeved on the cylinder outside the top of the sealing rubber cylinder;

[0017] The upper sealing gasket is sleeved on the cylinder and is arranged between the upper sealing gland and the top of the sealing rubber cylinder;

[0018] The bottom annular part of the inverted T-shaped sealing sliding sleeve is placed inside the sealing rubber cylinder and presses against the inner side of the top of the sealing rubber cylinder;

[0019] The sealing support is T-shaped, and its cylinder part extends downward beyond the bottom opening of the sealing rubber cylinder;

[0020] The lower sealing gasket and the lower sealing gland are placed outside the bottom of the sealing rubber cylinder and are sequentially sleeved on the cylinder part from top to bottom;

[0021] The top annular part of the sealing support presses against the inner side of the bottom of the sealing rubber cylinder; the top of the rack is fixedly connected to the bottom of the inverted T-shaped sealing sliding sleeve;

[0022] The sealing motor is fixed on the sealing motor support, and the sealing motor support is fixed on the top of the sealing support; the sealing motor is connected to a semi-ring gear, and the semi-ring gear meshes with the rack;

[0023] A liquid injection channel is formed on the sealing support, and a sealing cover is arranged at the inlet of the liquid injection channel; the sealing rubber cylinder is filled with insulating coolant;

[0024] A coaxial perforation one extending from top to bottom is formed on both the inverted T-shaped sealing sliding sleeve and the sealing support;

[0025] The bottom of the sealing support is placed inside the top of the upper housing of the driver and is connected to the upper housing of the driver by bolts.

[0026] The aforementioned underground fluid self-driven extraction device further includes the power sensing component disposed on the top of the seal;

[0027] The power sensing component includes an upper housing, a lower housing integrally provided with the upper housing, and a central tube coaxial with the upper housing and the lower housing and penetrating through the upper housing and the lower housing;

[0028] A wireless charging disk is installed on the top of the upper housing, a first data transceiver is installed on the side of the upper housing, and a controller and a cushion layer stacked up and down are installed inside the bottom of the upper housing;

[0029] A battery pack is installed inside the lower housing;

[0030] The central tube penetrates through the controller, the cushion layer and the battery pack;

[0031] A top cover placed at the bottom of the wireless charging disk is provided at the top of the central tube, and an upper temperature sensor and an upper pressure sensor are installed on the top of the top cover, and the upper temperature sensor and the upper pressure sensor are located in the central hole of the wireless charging disk;

[0032] Two symmetrically arranged upper positioning wheels are provided on the outer side of the lower housing;

[0033] A power communication channel is provided inside the central tube, and the upper part of the power communication channel is communicated with the bottom of the top cover to provide a cable channel for connecting the upper temperature sensor and the upper pressure sensor;

[0034] An upper sealing port located above the controller is opened on the side of the central tube, serving as a connection channel between the power communication channel and the controller and the data transceiver;

[0035] The bottom of the lower housing presses against the top of the inverted T-shaped sealing sliding sleeve;

[0036] The lower section of the central tube is inserted to the bottom end of the first perforation; the power communication channel extends downward into the upper housing of the driver and communicates with the power communication upper channel port;

[0037] A middle sealing port is opened on one side between the lower section of the central tube and the inverted T-shaped sealing sliding sleeve and the sealing support, serving as a cable channel for the power communication channel and the sealing motor;

[0038] A plurality of sliding sleeve sealing rings arranged from top to bottom are provided between the inverted T-shaped sealing sliding sleeve and the central tube.

[0039] The aforementioned underground fluid self-driven extraction device further includes a charging replenisher, a flow discharge cover and an electric gate valve;

[0040] The energy replenisher includes an energy replenisher housing, a movable plate, an electromagnet disposed within the energy replenisher housing, and a pneumatic spring having one end connected to the electromagnet and the other end extending out through a second perforation on the right side surface of the energy replenisher housing;

[0041] A plurality of wireless charging modules are provided on the top surface of the energy replenisher housing;

[0042] The left side of the movable plate contacts the inner side of the left side surface of the energy replenisher housing; an outwardly extending inclined downhill is provided at the right end of the movable plate, and the lower end of the inclined downhill extends to the bottom surface of the energy replenisher housing;

[0043] A plurality of compression springs are provided between the movable plate and the bottom surface of the energy replenisher housing;

[0044] Top holes and bottom holes are provided on the top surface and the bottom surface of the energy replenisher housing; the drain cover is fixed on the top surface of the energy replenisher housing and communicates with the top hole, and a drain hole plate is provided in the top hole; a drain pipe is provided on the right side of the drain cover;

[0045] The gate valve housing of the electric gate valve is fixed on the bottom surface of the energy replenisher housing outside the bottom hole and communicates with the bottom hole; the gate of the electric gate valve is horizontally arranged on the gate valve housing;

[0046] A upper data transceiver is provided on the right side of the energy replenisher housing, which is used to receive the data transmitted by the first data transceiver to realize the on-off control of the electromagnet, the pneumatic spring and the electric gate valve.

[0047] Finally, a self-driven underground fluid extraction method is provided, including the following steps:

[0048] 1), Connect the slotted pipe to the oil pipe and then lower it into the well, place 3 of the aforementioned driving pistons into the slotted pipe, and then successively connect the pulsating pipe, the electric gate valve and the energy replenisher from bottom to top at the top of the oil pipe through the wellhead device;

[0049] 2), Close the electric gate valve, send a pulsating pressure signal to the upward pressure sensor through the pulsating channel, and send a sealing motor working instruction through the controller to expand the sealing rubber cylinder to contact the inner wall of the slotted pipe to achieve sealing. Then, the controller issues a driving motor working instruction, and the driving motor drives the driving blade to rotate, pushing the driving piston upward, and finally discharging the fluid above the driving piston to the ground through the pulsating channel;

[0050] 3), Write the inner diameter and length parameters of the oil pipe into the controller in advance, calculate the position of the driving piston in the oil pipe based on the total volume of the fluid flowing out through the pulsating channel. When the driving piston is 20 meters away from the wellhead device, the first data transceiver transmits data to the upper data transceiver;

[0051] 4). When the battery pack has insufficient power, close the pulsation channel, open the electric slide gate valve, and drive the piston to continue moving upward; when the top of the driving piston contacts the bottom of the flow discharge plate, the first data transceiver transmits a signal to the controller to make the sealing motor work, causing the sealing rubber cylinder to contract; at this time, the upper data transceiver transmits a control signal for the electromagnet to work to hold the driving piston, and the pneumatic spring works to push the driving piston to move to the left side of the energy replenishment device housing; when the driving piston moves into place, the electromagnet is powered off, the pneumatic spring resets, and the wireless charging module charges the battery pack through the wireless charging disc.

[0052] 5). Close the electric slide gate valve and repeat step 2). When the battery pack has sufficient power and the driving piston moves to the pulsation channel, the lower data transceiver transmits a signal to the first data transceiver, and through the controller, transmits a working instruction for the sealing motor to make the sealing rubber cylinder contract, achieving double confirmation with step 4), causing the piston to contract, and the driving piston to descend to the initial position by gravity, and repeat step 2).

[0053] The advantages of the present invention are:

[0054] The sealing rubber barrel can expand or contract according to the actual pressure through the sealing motor, and the matching of the sealing pressure and the external pressure is achieved through the sealing rubber barrel and the liquid therein. Therefore, it has better sealing performance, especially it will not interfere with the flow rate, realizing the stability of the flow rate. The adaptive control of sealing and driving is achieved through sensors, controllers, and signal transceivers, improving the control intelligence, reducing the manual management cost, and improving the usage efficiency. Description of the Drawings

[0055] Figure 1 It is a schematic half-sectional view of the driving piston.

[0056] Figure 2 It is a sectional view of the driving member.

[0057] Figure 3 It is a sectional view of the sealing member.

[0058] Figure 4 It is a sectional view of the power sensing member.

[0059] Figure 5 It is a plan view of the battery pack setting.

[0060] Figure 6 It is a sectional view of the driver.

[0061] Figure 7 It is Figure 6 The view after rotating 90 degrees.

[0062] Figure 8 It is a schematic structural view of the energy replenishment device and the flow discharge cover.

[0063] Figure 9 It is a sectional view of the setting structure of the energy replenisher, the flow discharge cover and the electric gate valve.

[0064] Figure 10 It is a sectional view of the setting structure of the electromagnet and the pneumatic spring.

[0065] Figure 11 It is a schematic diagram of the implementation structure of the self-driven underground fluid extraction method. Specific implementation manner

[0066] In order to overcome the problems of poor plunger sealing, unstable flow rate, high management cost and low use efficiency in the prior art, this embodiment provides a component with better wear resistance and sealing performance than the existing sealing switch and sealing rubber sleeve, specifically a Figure 2 The shown driving member includes a housing, a driving motor 310 arranged in the housing, and a driving blade 312 arranged at the bottom of the housing; wherein, the housing includes an upper driving housing 301 and a lower driving housing 302; an annular retaining ring 303 and a balance rubber cylinder 304 are arranged in the upper driving housing 301, the bottom of the balance rubber cylinder 304 is set to be buckled upwards, and the outer edge 305 of the top of the balance rubber cylinder 304 touches the bottom surface of the annular retaining ring 303 through a driving gasket 306; a driving fluid channel 307 (this fluid channel is used for the circulation of the fluid inside and outside the upper driving housing) and a power communication upper channel port 308 are opened on the side wall of the upper driving housing 301 above the annular retaining ring 303; the driving motor 310 is arranged at the bottom of the lower driving housing 302, the driving shaft 311 of the driving motor 310 passes downwards through the driving shaft hole opened at the bottom of the lower driving housing 302 and is connected to the driving blade 312 outside the bottom of the lower driving housing 302; a shoulder 313 is arranged at the top of the lower driving housing 302, and an annular boss 314 is arranged on the inner side of the top of the shoulder 313; a driving liquid injection channel 315 is arranged on the side wall of the lower driving housing 302 and is located below the shoulder 313; the bottom of the upper driving housing 301 abuts against the shoulder 313; the bottom of the outer edge 305 of the top of the balance rubber cylinder 304 touches the top surface of the annular boss 314; a power communication lower channel port 318 is opened on the side wall of the lower driving housing 302, which cooperates with the power communication upper channel port 308 to realize the laying of the power and communication cables of the driving motor 310.

[0067] To enhance the sealing performance, in this embodiment, the bottom surface of the driver gasket 306 and the top surface of the top outer edge 305 of the balance rubber cylinder 304 are pressed together through a concave-convex surface structure, that is, one surface is concave and the other surface is a convex surface that matches and can bite or fit together. A plurality of shaft sealing rings 316 are provided between the drive shaft hole and the drive shaft 311 to enhance the sealing performance. This prevents the insulating coolant and high-pressure nitrogen injected into the upper housing 301 and the lower housing 302 of the driver from leaking from the balance rubber cylinder 304, resulting in an imbalance in the pressure above and below the balance rubber cylinder 304.

[0068] To further enhance the sealing performance of the drive piston, in this embodiment, a Figure 3 sealing member 2 as shown is provided at the top of the driving member 3. The sealing member 2 includes a sealing rubber cylinder 201, an inverted T-shaped sealing sliding sleeve 202, an upper sealing gland 203, an upper sealing gasket 204, a sealing support 205, a lower sealing gasket 206, a lower sealing gland 207, and two symmetrically arranged racks 208 placed inside the sealing rubber cylinder 201, two symmetrically arranged sealing motors 209, and two symmetrically arranged sealing motor supports 210.

[0069] Among them, the cylinder of the inverted T-shaped sealing sliding sleeve 202 extends upward outside the top opening of the sealing rubber cylinder 201; the upper sealing gland 203 is sleeved on the cylinder outside the top of the sealing rubber cylinder 201; the upper sealing gasket 204 is sleeved on the cylinder and placed between the upper sealing gland 203 and the top of the sealing rubber cylinder 201; the bottom annular part of the inverted T-shaped sealing sliding sleeve 202 is placed inside the sealing rubber cylinder 201 and presses against the inner side of the top of the sealing rubber cylinder 201; the sealing support 205 is T-shaped, and its cylindrical part extends downward outside the bottom opening of the sealing rubber cylinder 201; the lower sealing gasket 206 and the lower sealing gland 207 are placed outside the bottom of the sealing rubber cylinder 201 and are sleeved on the cylindrical part in sequence from top to bottom; the top annular part of the sealing support 205 presses against the inner side of the bottom of the sealing rubber cylinder 201; the top of the rack 208 is fixedly connected to the bottom of the inverted T-shaped sealing sliding sleeve 202; the sealing motor 209 is fixed on the sealing motor support 210, and the sealing motor support 210 is fixed on the top of the sealing support 205; the sealing motor 209 is connected to a half ring gear 211, and the half ring gear 211 meshes with the rack 208; the sealing rubber cylinder 201 is filled with insulating coolant. A liquid injection channel 213 is provided on the sealing support 205, and a sealing cover 214 is provided at the entrance of the liquid injection channel 213.

[0070] The sealing process of the seal 2 is as follows: When the sealing motor 209 rotates forward, it drives the rack 208 to move downward through the semi-circular gear 211. Then, it drives the inverted T-shaped sealing sliding sleeve 202 connected to the rack 208 to move downward. The upper sealing gland 203 and the upper sealing gasket 204 squeeze the sealing rubber cylinder 201 inward, and further squeeze the insulating coolant in the sealing rubber cylinder 201 (the bottom of the sealing rubber cylinder 201 is sealed and supported by the sealing support 205 and remains stationary). Under the extrusion of the insulating coolant, the circumferential side wall of the sealing rubber cylinder 201 bulges outward, so that it can be tightly pressed against the inner wall of the pipeline to be sealed, realizing the upper and lower sealing of the pipeline. On the contrary, when the sealing motor 209 rotates reversely upward or pushes the inverted T-shaped sealing sliding sleeve 202 outward to the outside of the sealing rubber cylinder 201, the sealing rubber barrel 201 returns to its initial state, and the sealing of the pipeline is released.

[0071] It can be clearly seen from Figure 3 that in order to improve the sealing performance of the sealing rubber barrel 201, in this embodiment, the upper sealing gasket 204 and the outer side of the top of the sealing rubber cylinder 201 are pressed together through a concave-convex surface structure; at the same time, the bottom annular part of the inverted T-shaped sealing sliding sleeve 202 and the inner side of the top of the sealing rubber cylinder 201 are also pressed together through a concave-convex surface structure; the top annular part of the sealing support 205 and the inner side of the bottom of the sealing rubber cylinder 201 are pressed together through a concave-convex surface structure; the lower sealing gasket 206 and the outer side of the bottom of the sealing rubber cylinder 201 are pressed together through a concave-convex surface structure. The concave-convex surface structure involved here refers to that among the two surfaces pressed against each other, one surface is provided with a depression, and the other surface is provided with a protrusion that matches and fits with the depression. Through the matching extrusion of the depression and the protrusion, multi-site sealing is realized, and the sealing effect is improved.

[0072] In this embodiment, the rack 208 is set as an inverted L shape, and the straight part at its top is connected to the bottom of the inverted T-shaped sealing sliding sleeve 202, which can enhance the connection stability between the rack and the inverted T-shaped sealing sliding sleeve, and at the same time facilitate the operation of the connection structure.

[0073] In order to facilitate the laying of signal control lines and conducting wires during intelligent control, in this embodiment, a coaxial through hole 212 extending from top to bottom is opened on both the inverted T-shaped sealing sliding sleeve 202 and the sealing support 205. Through this through hole 212, a pipeline can be penetrated to build a power and signal transmission channel.

[0074] while Figure 1 in the driving piston of a self-driven underground fluid extraction device shown, the power sensing element 1 is as Figure 4As shown, it is arranged on the top of the seal 2, and the power sensing component 1 includes an upper housing 101, a lower housing 106 integrally provided with the upper housing 101, and a central tube 108 coaxial with the upper housing 101 and the lower housing 106 and penetrating through the upper housing 101 and the lower housing 106; a wireless charging disc 102 is installed on the top of the upper housing 101, and a ring-shaped charging belt is arranged on the wireless charging disc 102 for use as a charging docking part.

[0075] A first data transceiver 103 is installed on the side of the upper housing 101, and a controller 104 and a cushion layer 105 stacked up and down are installed inside the bottom of the upper housing 101; while a battery pack 107 is installed inside the lower housing 106, which is electrically connected to the wireless charging disc 102 to provide power supply for the driving piston. The battery pack 107 is composed of Figure 5 the cylindrical batteries 115 and the thermal conductive silica gel 116 shown. The cylindrical batteries are arranged in a three-layer ring between the outer wall of the central tube 108 and the inner wall of the lower housing 106, and the gaps between the cylindrical batteries 115 are filled with the thermal conductive silica gel 116. The cylindrical batteries 115 are used to store electricity to provide sufficient power for the seal motor and the driving motor. The thermal conductive silica gel 116 is used to fill the gaps between the cylindrical batteries 115 to support the cylindrical batteries 115, and can also transfer the heat of the battery during charging to make the temperature of the entire battery pack 107 uniform. The top of the battery pack 107 is connected to the bottom of the cushion layer 105, the inner wall of the battery pack 107 is in contact with the outer wall of the central tube 108, the outer wall of the battery pack 107 is in contact with the inner wall of the lower housing 106, and the bottom of the battery pack 107 is in contact with the bottom of the lower housing 106.

[0076] The central tube 108 penetrates through the controller 104, the cushion layer 105 and the battery pack 107; and a top cover 109 placed at the bottom of the wireless charging disc 102 is arranged at the top of the central tube 108. An upper temperature sensor 110 and an upper pressure sensor 111 are installed on the top of the top cover 109. The upper temperature sensor 110 and the upper pressure sensor 111 are located in the central hole of the wireless charging disc 102, and the top surface is lower than the top surface of the wireless charging disc 102 to prevent wear on the upper temperature sensor 110 and the upper pressure sensor 111.

[0077] Two symmetric upper positioning wheels 112 are arranged on the outside of the lower housing 106 to ensure the coaxiality during the use of the driving piston and avoid skew.

[0078] Combined Figure 6It can be seen that a power and communication channel 113 is provided inside the central tube 108. The upper part of the power and communication channel 113 communicates with the bottom of the top cover 109 to provide a cable channel for connecting the upper temperature sensor 110 and the upper pressure sensor 111. An upper sealing port 114 is opened on the side of the central tube 108 above the controller 104, serving as a connection channel between the power and communication channel 113, the controller 104, and the first data transceiver 103. The lower section of the central tube 108 is inserted into the bottom end of the first perforation 212; the power and communication channel 113 extends downward to the bottom end of the central tube 108; a middle sealing port 115 is opened on one side of the lower section of the central tube 108 between the inverted T-shaped sealing sliding sleeve 202 and the sealing support 205, serving as a cable channel for the power and communication channel 113 and the sealing motor 209; a plurality of sliding sleeve sealing rings 215 are arranged in a top-down manner between the inverted T-shaped sealing sliding sleeve 202 and the central tube 108. The power supply cable and signal cable of the sealing motor 209 enter the power and communication channel 113 through the middle sealing port 115 and are then connected to the controller 104 through the upper sealing port 114. And, by Figure 6 It can be seen that the bottom of the sealing support 205 is placed inside the top of the upper housing 301 of the driver and is connected to the upper housing 301 of the driver by bolts 317.

[0079] From Figure 6 It can also be seen that a blade sheath 319 is connected to the bottom of the lower housing 302 of the driver, enclosing the lower drive shaft 311 and the drive blade 312 to protect the drive blade 312. A plurality of holes 309 are provided on the side wall of the blade sheath 319. Finally, it should be noted in the specification that two symmetric lower positioning wheels 321 as shown are provided on the upper housing 301 of the driver. The lower positioning wheels 321 and the upper positioning wheel 112 are respectively arranged on two mutually perpendicular radial directions, and the main function is to keep the drive piston centered, prevent uneven force on the drive piston, and avoid eccentric wear of the sealing rubber cylinder. Figure 7 As shown, two symmetric lower positioning wheels 321 are provided on the upper housing 301 of the driver. The lower positioning wheels 321 and the upper positioning wheel 112 are respectively arranged on two mutually perpendicular radial directions, and the main function is to keep the drive piston centered, prevent uneven force on the drive piston, and avoid eccentric wear of the sealing rubber cylinder.

[0080] Based on the aforementioned underground fluid self-driven extraction device, it further includes Figure 8 As shown, an energy replenisher 5 for replenishing electric energy to the drive piston, a flow discharge cover 6 provided at the liquid outlet of the energy replenisher 5, and an electric gate valve provided at the liquid inlet of the energy replenisher 5.

[0081] Among them, the energy replenisher 5 includes Figure 9 As shown, an energy replenisher housing 500, a movable plate 504, an electromagnet 506 placed inside the energy replenisher housing 500, and a pneumatic spring 507 with one end connected to the electromagnet 506 and the other end extending out of the second perforation 503 on the right side of the energy replenisher housing 500.

[0082] Among them, a plurality of wireless charging modules 508 are provided on the top surface of the energy replenisher housing 500 for charging the battery pack 107 through the wireless charging disc 102.

[0083] The left side of the movable plate 504 is in contact with the inner side of the left surface of the energy replenishing device housing 500; an outwardly extending inclined downhill 509 is provided at the right end of the movable plate 504, and the lower end of the inclined downhill 509 extends to the bottom surface of the energy replenishing device housing 500. The inclined downhill 509 serves as a transition zone for driving the piston to move from right to left, preventing jamming during the movement of the driving piston to the left side of the energy replenishing device 5.

[0084] A plurality of compression springs 505 are provided between the movable plate 504 and the bottom surface of the energy replenishing device housing 500 to upwardly support the movable plate to clamp the driving piston entering the energy replenishing device.

[0085] A top hole 501 (liquid outlet) and a bottom hole 502 (liquid inlet) are provided on the top surface and the bottom surface of the energy replenishing device housing 500; a flow discharge orifice plate 601 is provided in the top hole 501; the inner side surface of the top surface of the energy replenishing device housing 500 and the inner bottom surface (the orientation towards the inside of the energy replenishing device housing is the inside) of the flow discharge orifice plate 601 are in the same plane to prevent the driving piston from being blocked during operation and unable to be charged.

[0086] A flow discharge pipe 602 is provided on the right side of the flow discharge cover 6 for continuously discharging the fluid after the driving piston passes through the electric gate valve. An upper data transceiver 508 is provided on the right side surface of the energy replenishing device housing 500 for receiving the transmission signal of the data transceiver 103.

[0087] The gate valve housing 701 of the electric gate valve is fixed on the bottom surface of the energy replenishing device housing 500 outside the bottom hole 502 and is communicated with the bottom hole 502; the gate 702 of the electric gate valve is horizontally arranged on the gate valve housing 701. The electric gate valve is used to keep the energy replenishing device relatively dry during charging of the driving piston and prevent liquid from interfering with the wireless charging efficiency.

[0088] A second data transceiver is provided on the right side of the bottom surface of the energy replenishing device housing 500 for receiving the data transmitted by the first data transceiver 103 to realize the on-off control of the electromagnet 506, the pneumatic spring 507, and the electric gate valve.

[0089] Based on the foregoing embodiments, this embodiment provides a Figure 11 structural diagram for implementing the self-driven underground fluid extraction method as shown, and the self-driven underground fluid extraction method includes the following steps:

[0090] 1), Connect the slotted pipe 4 to the oil pipe 6 and lower it into the well. Place 3 driving pistons into the slotted pipe 4, and then sequentially connect the pulsating pipe 8, the electric gate valve, and the energy replenishing device 5 from bottom to top at the top of the oil pipe 6 through the wellhead device 10;

[0091] 2), close the electric gate valve, send a pulsating pressure signal to the upward pressure sensor 111 through the pulsating channel 801, and send a working instruction for the sealing motor 209 through the controller 104 to expand the sealing rubber cylinder 201 to contact the inner wall of the casing pipe 4 to achieve sealing. Then, the controller 104 issues a working instruction for the driving motor 310, and the driving motor 310 drives the driving blade 312 to rotate, pushing the driving piston upward, and finally discharging the fluid above the driving piston to the ground through the pulsating channel 801;

[0092] 3), write the inner diameter and length parameters of the tubing 6 into the controller 104 in advance, and calculate the position of the driving piston in the tubing 6 based on the total volume of the fluid flowing out through the pulsating channel 801. When the driving piston is 20 - 30 meters away from the wellhead device 10, the first data transceiver 103 transmits data to the upper data transceiver 510;

[0093] 4), when the battery pack 107 has insufficient power, close the pulsating channel 801 and open the electric gate valve, and the driving piston continues to move upward; when the top of the driving piston contacts the bottom of the flow - discharging plate 601, the first data transceiver 103 transmits a signal to the controller 104 to make the sealing motor 209 work, so that the sealing rubber cylinder 201 contracts; at this time, the upper data transceiver 510 controls the electromagnet 506 to work to hold the driving piston according to the signal received from the first data transceiver 103, and the pneumatic spring 507 works to push the driving piston to move to the left side of the energy - supplementing device housing; when the driving piston moves in place, the electromagnet 506 is powered off, the pneumatic spring 507 resets, and the wireless charging module charges the battery pack 107 through the wireless charging plate 102;

[0094] 5), close the electric gate valve, and repeat step 2). When the battery pack 107 has sufficient power and the driving piston moves to the pulsating channel 801, the lower data transceiver 802 transmits a signal to the first data transceiver 103, and issues a working instruction for the sealing motor 209 through the controller 104 to make the sealing rubber cylinder 201 contract, achieving double confirmation with step 4, making the piston contract, and the driving piston descends to the initial position by gravity, and then repeat step 2).

[0095] The algorithm for calculating the position of the driving piston in the tubing 9 based on the total volume of the fluid flowing out through the pulsating channel 801 in step 3) is as follows:

[0096]

[0097] In the formula: h - the position of the driving piston in the tubing, m; P 底 - the liquid pressure at the bottom of the tubing, MPa; V 出 - the volume of the fluid flowing out of the pulsating channel, m 3 ; A - the cross - sectional area of the inner diameter of the tubing, m 2 .

Claims

1. A driving member, characterized in that, It includes a housing, a drive motor (310) disposed within the housing, and a drive blade (312) disposed at the bottom of the housing; The housing includes an upper drive housing (301) and a lower drive housing (302); An annular retaining ring (303) and a balance rubber cylinder (304) are disposed within the upper drive housing (301). The bottom of the balance rubber cylinder (304) is inverted upward. The outer edge (305) at the top of the balance rubber cylinder (304) is pressed against the bottom surface of the annular retaining ring (303) through a drive spacer (306); On the side wall of the upper drive housing (301) above the annular retaining ring (303), a drive fluid channel (307) and a power communication upper channel opening (308) are provided; The drive motor (310) is disposed at the bottom of the lower drive housing (302). The drive shaft (311) of the drive motor (310) passes downward through a drive shaft hole provided at the bottom of the lower drive housing (302) and is connected to a drive blade (312) disposed outside the bottom of the lower drive housing (302); A shoulder (313) is provided at the top of the lower drive housing (302), and an annular boss (314) is provided on the inner side of the top of the shoulder (313); A drive liquid injection channel (315) is provided on the side wall of the lower drive housing (302) below the shoulder (313); The bottom of the upper drive housing (301) abuts against the shoulder (313); The bottom of the outer edge (305) is pressed against the top surface of the annular boss (314); A power communication lower channel opening (318) is provided on the side wall of the lower drive housing (302); Both the upper drive housing (301) and the lower drive housing (302) are filled with insulating coolant and high-pressure nitrogen.

2. The driving member according to claim 1, wherein The bottom surface of the drive spacer (306) and the top surface of the outer edge (305) are pressed together through a concave-convex surface structure.

3. The driving member according to claim 1 or 2, characterized in that, A plurality of shaft sealing rings (316) are provided between the drive shaft hole and the drive shaft (311).

4. An underground fluid self-driven extraction device, including a driving piston provided with the driving member (3) described in claim 1 or 2 or 3, characterized in that, It further includes a seal (2) provided at the top of the drive member (3); The seal includes a seal rubber cylinder (201), an inverted T-shaped seal sliding sleeve (202), an upper seal gland (203), an upper seal gasket (204), a seal support (205), a lower seal gasket (206), a lower seal gland (207), and two symmetrically arranged racks (208) disposed within the seal rubber cylinder (201), two symmetrically arranged seal motors (209), and two symmetrically arranged seal motor supports (210); The cylinder body of the inverted T-shaped seal sliding sleeve (202) extends upward outside the top opening of the seal rubber cylinder (201); the upper seal gland (203) is sleeved on the cylinder body outside the top of the seal rubber cylinder (201); The upper seal gasket (204) is sleeved on the cylinder body and disposed between the upper seal gland (203) and the top of the seal rubber cylinder (201); The bottom annular part of the inverted T-shaped sealing sliding sleeve (202) is placed inside the sealing rubber cylinder (201) and presses against the inner side of the top of the sealing rubber cylinder (201); The sealing support (205) is T-shaped, and its cylindrical part extends downward to the outside of the bottom opening of the sealing rubber cylinder (201); The lower sealing gasket (206) and the lower sealing gland (207) are placed outside the bottom of the sealing rubber cylinder (201), and are sequentially sleeved on the cylindrical part from top to bottom; The top annular part of the sealing support (205) presses against the inner side of the bottom of the sealing rubber cylinder (201); the top of the rack (208) is fixedly connected to the bottom of the inverted T-shaped sealing sliding sleeve (202); The sealing motor (209) is fixed on the sealing motor support (210), and the sealing motor support (210) is fixed on the top of the sealing support (205); the sealing motor (209) is connected to a half ring gear (211), and the half ring gear (211) meshes with the rack (208); A liquid injection channel (213) is provided on the sealing support (205), and a sealing cover (214) is provided at the inlet of the liquid injection channel (213); the sealing rubber cylinder (201) is filled with insulating coolant; A coaxial through hole one (212) extending from top to bottom is provided on both the inverted T-shaped sealing sliding sleeve (202) and the sealing support (205); The bottom of the sealing support (205) is placed inside the top of the driver upper housing (301) and is connected to the driver upper housing (301) by bolts (317).

5. The underground fluid self-driven extraction device according to claim 4, wherein It further includes a power sensing member (1) provided on the top of the seal (2); The power sensing member (1) includes an upper housing (101), a lower housing (106) integrally provided with the upper housing (101), and a central tube (108) coaxial with the upper housing (101) and the lower housing (106) and passing through the upper housing (101) and the lower housing (106); A wireless charging disc (102) is installed on the top of the upper housing (101), a first data transceiver (103) is installed on the side of the upper housing (101), and a controller (104) and a cushion layer (105) stacked up and down are installed inside the bottom of the upper housing (101); A battery pack (107) is installed inside the lower housing (106); The central tube (108) passes through the controller (104), the cushion layer (105) and the battery pack (107); A top cover (109) placed at the bottom of the wireless charging disc (102) is provided at the top of the central tube (108), and an upper temperature sensor (110) and an upper pressure sensor (111) are installed on the top of the top cover (109), and the upper temperature sensor (110) and the upper pressure sensor (111) are located in the central hole of the wireless charging disc (102); Two symmetric upper positioning wheels (112) are provided on the outside of the lower housing (106); A power communication channel (113) is provided inside the central tube (108). The upper part of the power communication channel (113) communicates with the bottom of the top cover (109) to provide a cable channel for connecting the upper temperature sensor (110) and the upper pressure sensor (111). An upper sealing port (114) is provided on the side of the central tube (108) above the controller (104), serving as a connection channel between the power communication channel (113) and the controller (104) and the first data transceiver (103). The bottom of the lower housing (106) presses against the top of the inverted T-shaped sealing sliding sleeve (202). The lower section of the central tube (108) is inserted into the bottom end of the first perforation (212). The power communication channel (113) extends downward into the upper housing of the driver (301) and communicates with the power communication upper channel port (308). A middle sealing port (115) is provided on one side of the lower section of the central tube (108) between the inverted T-shaped sealing sliding sleeve (202) and the sealing support (205), serving as a cable channel for the power communication channel (113) and the sealing motor (209). A plurality of sliding sleeve sealing rings (215) arranged from top to bottom are provided between the inverted T-shaped sealing sliding sleeve (202) and the central tube (108).

6. The underground fluid self-driven extraction device according to claim 5, wherein, It further includes an energy replenisher (5), a flow discharge cover (6) and an electric gate valve. The energy replenisher (5) includes an energy replenisher housing (500), a movable plate (504), an electromagnet (506) placed inside the energy replenisher housing (500), and a pneumatic spring (507) with one end connected to the electromagnet (506) and the other end extending out of the second perforation (503) on the right side of the energy replenisher housing (500). A plurality of wireless charging modules (508) are provided on the top surface of the energy replenisher housing (500). The left side of the movable plate (504) contacts the inner side of the left side surface of the energy replenisher housing (500). An outwardly extending inclined downhill (509) is provided at the right end of the movable plate (504), and the lower end of the inclined downhill (509) extends to the bottom surface of the energy replenisher housing (500). A plurality of compression springs (505) are provided between the movable plate (504) and the bottom surface of the energy replenisher housing (500). Top holes (501) and bottom holes (502) are provided on the top surface and the bottom surface of the energy replenisher housing (500). The flow discharge cover (6) is fixed on the top surface of the energy replenisher housing (500) and communicates with the top hole (501). A flow discharge orifice plate (601) is provided in the top hole (501). A flow discharge pipe (602) is provided on the right side of the flow discharge cover (6). The gate valve housing (701) of the electric gate valve is fixed on the bottom surface of the energy replenisher housing (500) outside the bottom hole (502) and communicates with the bottom hole (502). The gate (702) of the electric gate valve is horizontally arranged on the gate valve housing (701). An upper data transceiver (510) is provided on the right side of the energy compensator housing (500) for receiving data transmitted by the first data transceiver (103) to realize on / off control of the electromagnet (506), the pneumatic spring (507) and the electric gate valve.

7. The underground fluid self-driven extraction device according to claim 4, characterized in that, The upper sealing gasket (204) and the outer side of the top of the sealing rubber cylinder (201) are pressed together via a concave-convex surface structure; The bottom annular portion of the inverted T-shaped sealing sleeve (202) and the top inner side of the sealing rubber cylinder (201) are pressed together via a concave-convex surface structure; The top annular portion of the sealing support (205) and the bottom inner side of the sealing rubber cylinder (201) are pressed together via a concave-convex surface structure; The lower sealing gasket (206) and the outer side of the bottom of the sealing rubber cylinder (201) are pressed together via a concave-convex surface structure.

8. The underground fluid self-driven extraction device according to claim 4, characterized in that, A blade sheath (319) is connected to the bottom of the driver lower housing (302) to surround the drive shaft (311) and the drive blades (312), and a plurality of holes (309) are provided on the side wall of the blade sheath (319).

9. A self-driven underground fluid extraction method, comprising the underground fluid self-driven extraction device as described in claim 6, characterized in that, The steps include: 1) Connect the flower tube (4) and the oil pipe (6) and lower them into the well. Put three driving pistons into the flower tube (4). Then, connect the pulsation tube (8), the electric gate valve and the energy compensator (5) in sequence from bottom to top at the top of the oil pipe (6) through the wellhead device (10); 2) Close the electric gate valve, send a pulsating pressure signal to the upward pressure sensor (111) through the pulsating channel (801), and send a working instruction to the sealing motor (209) through the controller (104), so that the sealing rubber cylinder (201) expands to contact the inner wall of the flower tube (4) to achieve sealing. Then, the controller (104) sends a working instruction to the driving motor (310), and the driving motor (310) drives the driving blade (312) to rotate, pushing the driving piston upward, and finally discharges the fluid on the upper part of the driving piston to the ground through the pulsating channel (801); 3) The inner diameter and length parameters of the oil pipe (6) are written into the controller (104) in advance, and the position of the driving piston in the oil pipe (6) is calculated by the total volume of the fluid flowing out of the pulsation channel (801). When the driving piston is 20 meters away from the wellhead device (10), the first data transceiver (103) transmits data to the upper data transceiver (510); 4), When the battery pack (107) has insufficient power, close the pulsation channel (801), open the electric gate valve, and drive the piston to continue moving upward; when the top of the drive piston contacts the bottom of the flow discharge plate (601), the first data transceiver (103) transmits a signal to the controller (104) to make the sealing motor (209) work, causing the sealing rubber cylinder (201) to contract; at this time, the upper data transceiver (510) transmits a control signal to make the electromagnet (506) work to hold the drive piston, and the pneumatic spring (507) works to push the drive piston to move to the left side of the energy replenishment housing; when the drive piston moves into place, the electromagnet (506) is de-energized, the pneumatic spring (507) resets, and the wireless charging module (508) charges the battery pack (107) through the wireless charging plate (102); 5), Close the electric gate valve, repeat step 2), when the battery pack (107) has sufficient power and the drive piston moves to the pulsation channel (801), the lower data transceiver (802) transmits a signal to the first data transceiver (103), and through the controller (104), transmits a working instruction for the sealing motor (209) to make the sealing rubber cylinder (201) contract, achieving double confirmation with step 4), making the piston contract, and the drive piston descends to the initial position by gravity, and repeat step 2).

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