An automatic pressurization device for oil production equipment

Abstract

The application discloses an automatic pressurizing device for oil exploitation equipment and relates to the technical field of oil exploitation.The device comprises an oil extraction mechanism and a pressurizing mechanism.A floating member is lifted by buoyancy and spring, and a rotating member is driven to rotate by cooperation of a sliding ball and a threaded groove, so that a turbulence structure is driven to complete gas-liquid mixing and gas purification.A central cylinder is provided with an electric heating and heat preservation chamber to reduce the viscosity of crude oil and prevent pipe blockage at low temperature.A sliding sleeve is lifted by buoyancy to realize automatic on-off of a pipeline, and a gas pump is combined to form double pressurizing power.A conveying auger, a sampling detection pipe and a salinity tester are arranged in a pressurizing vertical cylinder to realize crude oil conveying.A controller adjusts the opening degree of a first valve to change the water quantity of filtered water in the central cylinder and adjusts the pressurizing frequency according to the value of the salinity tester.The application realizes automatic cyclic pressurizing through buoyancy, spring energy storage and threaded transmission, and solves the problems of high energy consumption, easy pipe blockage and poor low-temperature adaptability of traditional devices.

Description

Technical Field

[0001] This invention relates to the field of oil extraction technology, and more specifically, to an automatic pressurization device for oil extraction equipment. Background Technology

[0002] Oil extraction is the core link in oil and gas resource development. During the extraction process, problems such as insufficient formation pressure, high crude oil viscosity, and sand and gas content will directly affect the efficiency of crude oil ascent and transportation. Usually, it is necessary to provide auxiliary power for crude oil by supporting pressurization devices to ensure continuous and stable extraction.

[0003] A search of Chinese invention patent publication number CN108590602B reveals an automatic pressurization device for oil extraction equipment. The device comprises a base, a transmission housing, and a top-mounted pressure control circuit and pressure display device. The transmission housing includes an automatic pressurization gear set control device, an internal automatic pressurization power supply control transmission motor, an automatic pressurization elastic mechanism control transmission device, and an automatic pressurization chamber. The top-mounted pressure control circuit and pressure display device includes a pressure control circuit connected to the transmission device, a pressure control converter, and a pressure display gauge.

[0004] Existing equipment relies on external power sources to provide mechanical work. In the later stages of mining, in shallow low-pressure wells or surface oil gathering pipelines, the slow flow rate of the medium and the low ambient temperature make it impossible to perform pre-pressurization or pipeline pressurization when facing environments with large fluctuations in wellhead fluid inflow and adaptive changes in salinity and sand content, which increases the load on the pressurization equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an automatic pressurization device for oil extraction equipment that can serve as an auxiliary power compensation system for the main pump of an oil well. This device achieves pre-pressurization before the pump or pipeline pressurization through liquid level buoyancy, spring energy storage, and threaded transmission, thereby reducing the load on external pressurization equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic pressurization device for oil extraction equipment includes an oil extraction mechanism and a pressurization mechanism. The pressurization mechanism includes a top sealing component that snaps onto the oil extraction mechanism, a floating component that slides onto the top sealing component, and a rotating component that rotatably engages with the top sealing component. The oil extraction mechanism includes a mounting base plate, a rectangular cylinder fixed to the top of the mounting base plate, a central cylinder fixed inside the rectangular cylinder at the top of the mounting base plate, a pressurization pipe communicating with the central cylinder extending through one outer side of the rectangular cylinder, and a pressurization vertical cylinder communicating with one end face of the pressurization pipe extending through the top of the mounting base plate. The top sealing component includes a top sealing cover that snaps onto the top of the rectangular cylinder, and a component that reciprocates and slides through the center of the top of the top sealing cover. The guide tube has a U-shaped frame fixed to its top. The rotating component includes a rotating rod rotatably fitted on the U-shaped frame. A threaded groove is provided on the circumferential side of the rotating rod near the top, which slides with the floating component. The floating component includes a sliding rod slidably fitted inside the guide tube. A U-shaped plate is fixed to the top of the sliding rod. A sliding ball is provided on the U-shaped plate, which slides with the threaded groove. A sliding sleeve is fixed to the bottom of the sliding rod, which slides with the center cylinder. Several elastic springs connected to the bottom of the top cover are fixed to the top of the outer side of the sliding sleeve. Several buoyancy vertical rods are fixed to the top of the inner side of the sliding sleeve. A buoyancy ball is fixed to the bottom of each of the buoyancy vertical rods. A first connecting groove and a second connecting groove are staggered along the vertical direction on the side wall of the sliding sleeve.

[0007] The invention is further configured such that: two symmetrical limiting vertical grooves are provided on the inner wall of the guide tube; a sliding ring sleeved on the rotating rod is fixed on one outer side of the U-shaped plate; an extension groove is provided on one outer side of the U-shaped plate inside the sliding ring; an extension rod is fixed on the inner wall of the extension groove; and the end of the extension rod is fixedly connected to the sliding ball; two limiting vertical rails are fixed on the circumferential side of the sliding rod and are respectively slidably engaged on the two limiting vertical grooves.

[0008] The invention is further configured such that: a sliding sleeve is fixedly attached to the bottom of the sliding rod and slidably fitted inside the central cylinder; a plurality of elastic springs are fixedly attached to the top of the sliding sleeve; the tops of the elastic springs are fixedly connected to the bottom of the top cover; a plurality of buoyancy vertical rods are fixedly attached to the top of the sliding sleeve; a buoyancy ball is fixedly attached to the bottom of each of the buoyancy vertical rods; and a rotating circular plate is fixedly attached to the top of the rotating rod; a circular hole is provided through the top of the U-shaped frame, and the circular hole is rotatably connected to the rotating circular plate through a bearing.

[0009] The invention is further configured such that: the bottom of the top cover is provided with an annular sealing groove that is sealed and fastened to the top of the central cylinder; a number of spaced-apart turbulence cone plates are fixed on the circumferential side of the rotating rod near the bottom, and a number of turbulence plates are fixed on the circumferential side of the rotating rod between the number of turbulence cone plates, and a number of turbulence holes are provided on the sides of the number of turbulence plates.

[0010] The invention is further configured such that: a controller is fixed to the side of the mounting base plate; an inlet pipe communicating with the central cylinder is provided through one outer side of the rectangular cylinder, and a first valve electrically connected to the controller is provided on the periphery of the inlet pipe; an outlet pipe communicating with the central cylinder is provided through one outer side of the rectangular cylinder near the bottom, and a second valve electrically connected to the controller is provided on the periphery of the outlet pipe; a circular groove is provided at the bottom of the mounting base plate directly below the central cylinder, and an electric heating plate is provided inside the circular groove; an electric heater electrically connected to the controller is fixed at the top of the mounting base plate, and the electric heater and the electric heating plate are electrically connected by a wire.

[0011] The invention is further configured such that: a venting groove extending upward is provided at the bottom of the sliding sleeve; the venting groove extends vertically along the outer wall of the sliding sleeve, and its vertical extension length is greater than or equal to the maximum lifting stroke of the sliding sleeve, so as to ensure that when the sliding sleeve slides up and down in the central cylinder, the venting groove always remains aligned and connected with the other end of the air pipe, preventing the air path from being cut off; a mounting plate is fixed near the top of one outer side of the rectangular cylinder, and an air pump electrically connected to the controller is fixed at the top of the mounting plate; an air pipe is connected near the top of one outer side of the rectangular cylinder, one end of the air pipe is connected to the output end of the air pump, and the other end of the air pipe passes through the rectangular cylinder and is connected to the central cylinder; the venting groove is connected to the other end of the air pipe.

[0012] The invention is further configured such that: a downwardly extending partition cylinder is fixed at the top of the pressurizing vertical cylinder, and the outer wall of the partition cylinder and the inner wall of the pressurizing vertical cylinder form a pressurizing cavity; the inner wall of the rectangular cylinder and the outer peripheral side of the central cylinder form a heat preservation chamber; a conveying motor electrically connected to the controller is fixed at the top of the pressurizing vertical cylinder, and a conveying auger is fixed inside the partition cylinder at the output shaft of the conveying motor.

[0013] The invention is further configured such that: a sampling and detection tube extending into the interior of the separator is connected through the outer periphery of the pressurized vertical cylinder, and a third valve electrically connected to the controller is provided on the periphery of the sampling and detection tube; a mineralization analyzer is provided on the mounting base plate, and the detection port of the mineralization analyzer is connected to the sampling and detection tube.

[0014] The invention is further configured such that: an oil extraction pipe extending into the interior of the partition cylinder is provided through the outer periphery of the pressurized vertical cylinder near the top; an oil extraction pump electrically connected to the controller is fixedly installed on the mounting base plate; the oil extraction end of the oil extraction pump is connected to one end of the oil extraction pipe; and an oil production and transportation pipeline is provided through the output end of the oil extraction pump.

[0015] The advantages of this invention are: 1. As an auxiliary power compensation system for the main pump of an oil well, this invention achieves pre-pressurization before the pump or pressurization of the pipeline through liquid level buoyancy, spring energy storage and threaded transmission, thereby reducing the load on the external pressure replenishment equipment.

[0016] This invention uses a rotating component to drive the turbulence cone plate, turbulence plate and turbulence hole to rotate synchronously, so that the pressurized gas and filtered water are fully mixed, effectively intercepting gas impurities, purifying the pressurized gas source, avoiding impurities from clogging the pipeline, and improving the stability of the pressurization process. This invention uses an electrically heated circular plate at the bottom of the base plate in conjunction with an insulated chamber filled with inert gas to continuously heat and insulate crude oil and pressurized medium, thereby reducing crude oil viscosity, preventing low-temperature solidification and pipe blockage, improving the fluidity of crude oil in low-temperature environments, and increasing stability during transportation. This invention achieves automatic opening and closing of the first and second connecting slots through the rising and falling process of the sliding sleeve with buoyancy, improving the efficiency of the on / off response. Furthermore, the top cover's annular sealing groove tightly engages with the central cylinder, improving overall sealing performance and reducing cross-contamination and pressure leakage during oil production pressurization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an automatic pressurization device for oil extraction equipment according to the present invention.

[0018] Figure 2 This is a schematic diagram of the oil extraction mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the oil extraction mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the oil extraction mechanism of the present invention from an overhead view.

[0021] Figure 5 This is a schematic diagram of the pressurization mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the capping component of the present invention.

[0023] Figure 7 This is a schematic diagram of the capping component of the present invention from another angle.

[0024] Figure 8 This is a schematic diagram of the structure of the floating component of the present invention.

[0025] Figure 9 For the present invention Figure 8 A magnified structural diagram of point A in the middle.

[0026] Figure 10 This is a schematic diagram of the rotating component of the present invention.

[0027] Figure 11 This is a front view of the rotating component of the present invention.

[0028] In the diagram: 1. Oil extraction mechanism; 2. Pressurization mechanism; 3. Top cap; 5. Floating component; 6. Rotating component; 101. Mounting base plate; 102. Rectangular cylinder; 103. Central cylinder; 104. Pressurization pipe; 105. Pressurization vertical cylinder; 106. Controller; 107. Water inlet pipe; 108. First valve; 109. Water outlet pipe; 110. Second valve; 111. Circular groove; 112. Electric heating circular plate; 113. Electric heater; 114. Mounting plate; 115. Air pump; 116. Separator cylinder; 117. Pressurization chamber; 118. Insulated chamber; 119. Conveying motor; 120. Conveying auger; 121. Sampling and testing pipe; 122. Third valve; 123. Mineralization analyzer; 124. Oil sucker pipe ; 125. Oil pump; 126. Oil production and delivery pipeline; 301. Top cover; 302. Guide pipe; 303. U-shaped frame; 304. Limiting vertical groove; 305. Circular hole; 306. Annular sealing groove; 501. Sliding rod; 502. Limiting vertical rail; 503. U-shaped plate; 504. Sliding ring; 505. Extension groove; 506. Extension rod; 507. Sliding ball; 508. Sliding sleeve; 509. Elastic spring; 510. Buoyancy vertical rod; 511. Buoyancy ball; 512. Ventilation groove; 513. First connecting groove; 514. Second connecting groove; 601. Rotating rod; 602. Threaded groove; 603. Rotating circular plate; 604. Turbation cone plate; 605. Turbation plate; 606. Turbation hole. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0032] Example 1, please refer to Figures 1-11The present invention provides the following technical solution: an automatic pressurization device for oil extraction equipment, specifically comprising an oil extraction mechanism 1 and a pressurization mechanism 2. The pressurization mechanism 2 includes a top sealing member 3 snapped onto the oil extraction mechanism 1, a floating member 5 slidably fitted onto the top sealing member 3, and a rotating member 6 rotatably fitted onto the top sealing member 3. The oil extraction mechanism 1 includes a mounting base plate 101, a rectangular cylinder 102 fixed to the top of the mounting base plate 101, a central cylinder 103 fixed inside the rectangular cylinder 102 at the top of the mounting base plate 101, a pressurization pipe 104 communicating with the central cylinder 103 penetrating through one outer side of the rectangular cylinder 102, and a pressurization vertical cylinder 105 communicating with one end face of the pressurization pipe 104 penetrating through the top of the mounting base plate 101. The top sealing member 3 includes a top sealing cover 301 snapped onto the top of the rectangular cylinder 102, and a guide pipe 302 reciprocatingly slidingly fitted with the floating member 5 at the center of the top of the top sealing cover 301. The top of the top cover 301 is fixed with a U-shaped frame 303; the rotating component 6 includes a rotating rod 601 rotatably fitted on the U-shaped frame 303, and a threaded groove 602 is provided on the circumferential side of the rotating rod 601 near the top, which slides with the floating component 5; the floating component 5 includes a sliding rod 501 that slides with the inside of the guide tube 302, and a U-shaped plate 503 is fixed to the top of the sliding rod 501, and a sliding ball 507 that slides with the threaded groove 602 is provided on the U-shaped plate 503. The bottom of the slide rod 501 is fixed with a sliding sleeve 508 that is slidably fitted inside the central cylinder 103. Several elastic springs 509 connected to the bottom of the top cover 301 are fixed to the top of the outer side of the sliding sleeve 508. Several buoyancy vertical rods 510 are fixed to the top of the inner side of the sliding sleeve 508. Buoyancy balls 511 are fixed to the bottom of each of the several buoyancy vertical rods 510. The side wall of the sliding sleeve 508 is provided with a first connecting groove 513 and a second connecting groove 514 that are offset in the vertical direction. Furthermore, the inner wall of the guide tube 302 is provided with two symmetrical limiting vertical grooves 304. A sliding ring 504 sleeved on the rotating rod 601 is fixed to one outer side of the U-shaped plate 503. An extension groove 505 is provided inside the sliding ring 504 on one outer side of the U-shaped plate 503. An extension rod 506 is fixed to the inner wall of the extension groove 505. The end of the extension rod 506 is fixedly connected to the sliding ball 507. Two limiting vertical rails 502 are fixed to the circumferential side of the slide rod 501, which are respectively slidably engaged with the two limiting vertical grooves 304. A U-shaped plate 503 is fixed to the top of the slide rod 501. A sliding ring 504 sleeved on the rotating rod 601 is fixed to one outer side of the U-shaped plate 503. An extension groove 505 is provided inside the sliding ring 504 on the outer side. An extension rod 506 is fixed to the inner wall of the extension groove 505. A sliding ball 507 that slides with the threaded groove 602 is fixed to the end of the extension rod 506. A sliding sleeve 508 that slides with the center cylinder 103 is fixed to the bottom of the sliding rod 501. Several elastic springs 509 are fixed to the top of the sliding sleeve 508. The tops of the elastic springs 509 are fixed to the bottom of the top cover 301. Several buoyancy vertical rods 510 are fixed to the top of the sliding sleeve 508. Buoyancy balls 511 are fixed to the bottom of each of the buoyancy vertical rods 510. A rotating circular plate 60 is fixed to the top of the rotating rod 601. 3; A circular hole 305 is provided through the top of the U-shaped frame 303, and the circular hole 305 is rotatably connected to the rotating circular plate 603 through a bearing; The bottom of the top cover 301 is provided with an annular sealing groove 306 that is sealed and locked onto the top of the central cylinder 103; Several spaced-apart turbulence cone plates 604 are fixed on the circumferential side of the rotating rod 601 near the bottom, and several turbulence plates 605 are fixed on the circumferential side of the rotating rod 601 between the several turbulence cone plates 604, and several turbulence holes 606 are provided on the sides of the several turbulence plates 605; A controller 106 is fixed on the side of the mounting base plate 101; A rectangular cylinder 102 is provided with a through-through connection to the central cylinder 103 on one outer side. A water inlet pipe 107 is connected to the controller 106. A first valve 108 is provided on the periphery of the water inlet pipe 107. A water outlet pipe 109 is provided through the outer side of the rectangular cylinder 102 near the bottom and is connected to the central cylinder 103. A second valve 110 is provided on the periphery of the water outlet pipe 109 and is connected to the controller 106. A circular groove 111 is provided at the bottom of the mounting base plate 101 directly below the central cylinder 103. An electric heating disc 112 is provided inside the circular groove 111. An electric heater 113 is fixed on the top of the mounting base plate 101 and is connected to the controller 106. The electric heater 113 and the electric heating disc 112 are connected by wires.

[0033] The specific application of this embodiment is as follows: In the initial state of device installation, the mounting base plate 101 of the oil extraction mechanism 1 is first fixed in the designated position of the oil extraction equipment to complete the overall positioning; after positioning, the pressurizing mechanism 2 is snapped onto the top of the rectangular cylinder 102 by the top cover 301, and the annular sealing groove 306 is sealed and engaged with the top of the central cylinder 103 to ensure the internal airtightness of the central cylinder 103. Before use, the floating part 5, under the initial elastic force of the elastic spring 509, drives the sliding rod 501 and the sliding sleeve 508 to the upper middle position inside the central cylinder 103, and the first connecting groove 513 and the pressurizing pipe 104, and the second connecting groove 514 and the water inlet pipe 107 are all in a staggered closed state; then the controller 106 is powered on to complete the initial self-test of the first valve 108, the second valve 110, and the electric heater 113. During the subsequent pressurization process, the water level begins to rise. During this process, controller 106 controls the opening of the first valve 108 and the closing of the second valve 110. Filtered water from the outside enters the central cylinder 103 through the inlet pipe 107. As the liquid level inside the central cylinder 103 continues to rise, the buoyancy ball 511 experiences upward buoyancy, causing the buoyancy rod 510, sliding sleeve 508, and slide rod 501 to move upwards as a whole. The elastic spring 509 is compressed and stores energy. During this sliding process, to ensure internal airtightness during pressurization... Wear-resistant dynamic sealing rings (such as PTFE O-rings) are embedded at the upper and lower ends of the outer periphery of the sliding sleeve 508 and around each connecting groove. This ensures a tight sliding seal between the sliding sleeve 508 and the inner wall of the central cylinder 103 when the sliding sleeve 508 moves up and down. The slide rod 501 slides along the guide tube 302, and the limiting vertical rail 502 engages with the limiting vertical groove 304 to ensure that the slide rod 501 only moves vertically and does not rotate. Simultaneously, the upward movement of the slide rod 501 drives the top U-shaped plate 503 and the sliding ring 504 to move together. As the cylinder rises, the sliding ball 507 engages with the threaded groove 602 of the rotating rod 601, sliding along the spiral groove. This converts the vertical upward motion into the rotational motion of the rotating rod 601. The rotating rod 601 rotates stably via the bearing cooperation between the rotating circular plate 603 and the circular hole 305, causing the bottom turbulence cone plate 604 and turbulence plate 605 to rotate and agitate synchronously at low speed. This agitates the pressurized gas and filtered water in the central cylinder 103 through the minor disturbance flow holes 606, breaking the accumulation of direct exhaust flow in the central cylinder 103 and extending the bubble length. The residence time in the filtered water allows some of the dust and impurities entrained in the gas to be wetted by the liquid and initially intercepted during contact, playing an auxiliary pretreatment role. This ensures that the pressurized gas introduced is in full contact with the filtered water. Through the mixing and turbulence during the above-mentioned rising stage (i.e., the pressure-holding stage when the pipeline is closed), the gas-liquid contact area is increased, achieving forced premixing and impurity pre-interception before the fluid is discharged. This allows the impurities in the pressurized gas to be fully adsorbed and intercepted by the filtered water, completing the online purification treatment of the pressurized gas and improving the purity and stability of the pressurized gas. During the above process, when the sliding sleeve 508 rises to the set height due to buoyancy, the first connecting groove 513 on the side wall is precisely aligned and connected with the port of the pressurizing pipe 104. At this time, the mixture of filtered water and pressurized gas, which has been disturbed and mixed evenly in the central cylinder 103, is automatically transported to the pressurizing vertical cylinder 105 through the pressurizing pipe 104 under the linkage of liquid level pressure and buoyancy mechanism, completing one automatic pressurization and transportation cycle. Throughout the process, as an auxiliary power compensation system for the oil well main pump, the system achieves pre-pressurization before the pump or pipeline pressurization through liquid level buoyancy, spring energy storage, and threaded transmission, reducing the load on the external pressurization equipment. After pressurization is completed, the liquid level in the central cylinder 103 drops, the buoyancy decreases, the elastic spring 509 releases its elastic potential energy, and pulls the floating part 5 downward to reset. The first connecting groove 513 and the pressurizing pipe 104 are re-closed in a staggered manner, waiting for the next water injection pressurization, thus realizing the periodic automatic pressurization cycle. Simultaneously, the controller 106 controls the electric heater 113 to start according to the ambient temperature of the mining environment, driving the electric heating disc 112 to perform a certain heating treatment on the bottom of the central cylinder 103. While further increasing the mixing and filtration effect between the filtered water and the pressurized gas, the temperature of the pressurized gas flowing into the pressurized pipe 104 is appropriately increased. At the same time, while heating, a certain amount of inert gas can be introduced into the insulation chamber 118 between the rectangular cylinder 102 and the central cylinder 103 to reduce the heat loss of the pressurized gas and the interior of the central cylinder 103 and maintain a stable working temperature. At the same time, the inert gas filled into the insulation chamber 118 forms a heat insulation layer, slowing down the conduction of heat from the interior of the central cylinder 103 to the external environment. This insulation structure, in conjunction with the electric heating disc 112, maintains the temperature of the internal working medium and prevents crude oil from solidifying or becoming blocked in the low-temperature transportation pipeline due to a sudden increase in viscosity.

[0034] Example 2, please refer to Figures 1-11This second embodiment improves upon the first embodiment as follows: Specifically, the bottom of the sliding sleeve 508 is provided with an upwardly extending vent groove 512; specifically, the vent groove 512 extends vertically along the outer side wall of the sliding sleeve 508, and its vertical extension length is greater than or equal to the maximum lifting stroke of the sliding sleeve 508, to ensure that when the sliding sleeve 508 slides up and down reciprocally within the central cylinder 103, the vent groove 512 always remains aligned and connected with the other end of the air pipe, preventing the air path from being cut off; rectangular cylinder 102 A mounting plate 114 is fixed to one outer side near the top. An air pump 115, electrically connected to the controller 106, is fixed to the top of the mounting plate 114. An air pipe is connected to one outer side of the rectangular cylinder 102 near the top. One end of the air pipe is connected to the output end of the air pump 115, and the other end of the air pipe passes through the rectangular cylinder 102 and is connected to the central cylinder 103. The ventilation slot 512 is connected to the other end of the air pipe. A downwardly extending partition cylinder 116 is fixed to the top of the pressurized vertical cylinder 105. The outer wall of the partition cylinder 116 is connected to the pressurized vertical cylinder 105. The inner wall of the 105 forms a pressurization chamber 117; the inner wall of the rectangular cylinder 102 and the outer periphery of the central cylinder 103 form a heat preservation chamber 118; a conveyor motor 119 electrically connected to the controller 106 is fixed to the top of the pressurization vertical cylinder 105, and a conveyor auger 120 is fixed inside the partition cylinder 116 with the output shaft of the conveyor motor 119; a sampling detection tube 121 extending into the partition cylinder 116 is penetrating and connected to the outer periphery of the pressurization vertical cylinder 105, and a third valve electrically connected to the controller 106 is provided on the periphery of the sampling detection tube 121. Door 122; A mineralization analyzer 123 is installed on the mounting base plate 101, and the detection port of the mineralization analyzer 123 is connected to the sampling detection tube 121; An oil extraction pipe 124 extending into the interior of the separator 116 is installed through the outer periphery of the pressurized vertical cylinder 105 near the top; An oil extraction pump 125 electrically connected to the controller 106 is fixedly installed on the mounting base plate 101, and the oil extraction end of the oil extraction pump 125 is connected to one end of the oil extraction pipe 124; An oil production and delivery pipeline 126 is connected to the output end of the oil extraction pump 125.

[0035] The specific application of this embodiment 2 is as follows: using the installation and positioning method of embodiment 1, the mounting base plate 101 is fixed, the top cover 301 is sealed and engaged, the controller 106 completes the self-test of all electrical components, after the self-test is completed, the floating part 5 is in the initial position under the action of the elastic spring 509, the first connecting groove 513 and the second connecting groove 514 are both closed, and the air pump 115, the conveying motor 119, the oil pump 125, the third valve 122, and the mineralization measuring instrument 123 are all in standby mode; Subsequently, during the pressurization process, the first valve 108 is opened by the controller 106, and the external water source enters the central cylinder 103 through the water inlet pipe 107. The rise in liquid level pushes the buoyancy ball 511 to move the floating part 5 upward. At this time, the controller 106 simultaneously starts the air pump 115, and the pressurized gas enters the upper space of the central cylinder 103 through the air pipe and the air vent 512, forming a dual pressurization force of air pressure and liquid level pressure. When the sliding sleeve 508 rises to the preset position, the second connecting groove 514 and the water inlet pipe 107 automatically close, stopping water injection. At the same time, the first connecting groove 513 and the pressurizing pipe 104 are precisely aligned, opening the pressurizing channel. At this time, the mixture of pressurized gas and filtered water in the central cylinder 103 is pressed into the partition cylinder 116 inside the pressurizing vertical cylinder 105 through the pressurizing pipe 104 under the action of liquid level pressure and gas pressure, further stabilizing the pressure. While stabilizing the pressure, the controller 106 starts the conveying motor 119, driving the conveying auger 120 to rotate, forcibly pushing the oil, preventing condensation and blockage, and achieving stable upward conveying. At the same time, the pressurized gas is continuously kept warm in the heat preservation chamber 118, which, together with the bottom electric heating circular plate 112, ensures that the crude oil flows with low viscosity throughout the subsequent oil extraction process. After a period of oil production, the third valve 122 is opened by the controller 106, and a small amount of oil enters the mineralization analyzer 123 through the sampling and detection tube 121. The mineralization of the crude oil is detected in real time by the mineralization analyzer 123, and the data is transmitted back to the controller 106. During the detection process, if the mineralization is too high (for example, exceeding 10,000 mg / L), the controller 106 instructs the opening of the first valve 108 to increase by 15%, thereby accelerating the water injection rate of the external water source into the central cylinder 103. The increase in the water injection rate causes the liquid level in the central cylinder 103 to rise faster, thereby shortening the time required for the floating part 5 to rise to the opening height of the first connecting groove 513 in a single operation, and ultimately realizing the increase in the automatic pressurization frequency. Through the above physical transmission logic, the injected water volume and pressurization frequency are automatically adjusted to improve the fluidity of crude oil in the later oil production process. When the oil level in the pressurized vertical cylinder 105 reaches the set level, the oil pump 125 is started by the controller 106. The crude oil enters the oil pump 125 through the oil extraction pipe 124 and is stably transported to the oil collection system through the oil production and transportation pipeline 126. Through the continuous pushing of the conveying screw conveyor 120, it is suitable for the extraction of high-viscosity, sand-containing, and gas-containing crude oil. After the oil extraction is completed, the pressure in the central cylinder 103 drops, the elastic spring 509 pulls the floating part 5 down, the sliding sleeve 508 resets, the first connecting groove 513 closes, the second connecting groove 514 opens, the controller 106 can open the second valve 110 to discharge the filtered water, the air pump 115 stops supplying air, the system returns to the initial state, and enters the next round of water injection, air intake, pressurization, turbulence, pressurization, detection, oil extraction, and reset process.

[0036] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0039] 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.

[0040] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic pressurization device for oil extraction equipment, comprising an oil extraction mechanism (1) and a pressurization mechanism (2), characterized in that: The pressurizing mechanism (2) includes a capping part (3) that is snapped onto the oil extraction mechanism (1), a floating part (5) that is slidably fitted onto the capping part (3), and a rotating part (6) that is rotatably fitted onto the capping part (3). The oil production mechanism (1) includes a mounting base plate (101), a rectangular cylinder (102) is fixed on the top of the mounting base plate (101), a central cylinder (103) is fixed inside the rectangular cylinder (102) on the top of the mounting base plate (101), a pressurizing pipe (104) connected to the central cylinder (103) is passed through one outer side of the rectangular cylinder (102), and a pressurizing vertical cylinder (105) connected to one end face of the pressurizing pipe (104) is passed through the top of the mounting base plate (101). The capping component (3) includes a top cap (301) that is snapped onto the top of the rectangular tube (102). A guide tube (302) with a reciprocating sliding fit is provided through the center of the top of the top cap (301). A U-shaped frame (303) is fixed on the top of the top cap (301). The rotating component (6) includes a rotating rod (601) rotatably fitted on the U-shaped frame (303), and a threaded groove (602) is provided on the circumferential side of the rotating rod (601) near the top. The floating component (5) includes a sliding rod (501) that is slidably fitted inside the guide tube (302). A U-shaped plate (503) is fixed to the top of the sliding rod (501). A sliding ball (507) that is slidably fitted to the threaded groove (602) is provided on the U-shaped plate (503). A sliding sleeve (508) that is slidably fitted inside the central cylinder (103) is fixed to the bottom of the sliding rod (501). Several elastic springs (509) that are connected to the bottom of the top cover (301) are fixed to the top of the sliding sleeve (508). Several buoyancy vertical rods (510) are fixed to the top of the sliding sleeve (508). A buoyancy ball (511) is fixed to the bottom of each of the several buoyancy vertical rods (510). A first connecting groove (513) and a second connecting groove (514) are offset along the vertical direction on the side wall of the sliding sleeve (508).

2. The automatic pressurization device for oil extraction equipment according to claim 1, characterized in that: The inner wall of the guide tube (302) is provided with two symmetrical limiting vertical grooves (304). A sliding ring (504) sleeved on the rotating rod (601) is fixed on one outer side of the U-shaped plate (503). An extension groove (505) is provided on one outer side of the U-shaped plate (503) inside the sliding ring (504). An extension rod (506) is fixed on the inner wall of the extension groove (505). The end of the extension rod (506) is fixedly connected to the sliding ball (507). The slide bar (501) has two limiting vertical rails (502) fixed on its periphery, which are respectively slidably engaged on two limiting vertical grooves (304).

3. An automatic pressurization device for oil extraction equipment according to claim 2, characterized in that: The bottom of the slide rod (501) is fixed with a sliding sleeve (508) that is slidably fitted inside the central cylinder (103). Several elastic springs (509) are fixed to the top of the outer side of the sliding sleeve (508). The top of the several elastic springs (509) is fixedly connected to the bottom of the top cover (301). Several buoyancy vertical rods (510) are fixed to the top of the inner side of the sliding sleeve (508). Buoyancy balls (511) are fixed to the bottom of the several buoyancy vertical rods (510). A rotating circular plate (603) is fixed to the top of the rotating rod (601). The top of the U-shaped frame (303) has a circular hole (305) that runs through it. The circular hole (305) is rotatably connected to the rotating circular plate (603) through a bearing.

4. An automatic pressurization device for oil extraction equipment according to claim 3, characterized in that: The bottom of the top cover (301) is provided with an annular sealing groove (306) that is sealed and locked at the top of the central cylinder (103). The rotating rod (601) has several spaced-apart turbulence cone plates (604) fixed on its periphery near the bottom. Several turbulence plates (605) are fixed on the periphery of the rotating rod (601) between the several turbulence cone plates (604). Several turbulence holes (606) are opened on the sides of the several turbulence plates (605).

5. An automatic pressurization device for oil extraction equipment according to claim 4, characterized in that: The controller (106) is fixed to the side of the mounting base plate (101); A water inlet pipe (107) is provided through one outer side of the rectangular tube (102) and is connected to the central tube (103). A first valve (108) connected to the controller (106) is provided on the periphery of the water inlet pipe (107). A water outlet pipe (109) connected to the central tube (103) is provided through one outer side of the rectangular tube (102) near the bottom. A second valve (110) connected to the controller (106) is provided on the periphery of the water outlet pipe (109). A circular groove (111) is provided at the bottom of the mounting base plate (101) directly below the central tube (103). An electric heating disc (112) is provided inside the circular groove (111). An electric heater (113) connected to the controller (106) is fixed at the top of the mounting base plate (101). The electric heater (113) and the electric heating disc (112) are connected by wires.

6. An automatic pressurization device for oil extraction equipment according to claim 3, characterized in that: The bottom of the sliding sleeve (508) is provided with an upwardly extending vent groove (512). The vent groove (512) extends vertically along the outer side wall of the sliding sleeve (508), and its vertical extension length is greater than or equal to the maximum lifting stroke of the sliding sleeve (508). This ensures that when the sliding sleeve (508) slides up and down in the central cylinder (103), the vent groove (512) always remains aligned and connected with the other end of the air pipe to prevent the air path from being cut off. A mounting plate (114) is fixed to one outer side of the rectangular tube (102) near the top. An air pump (115) electrically connected to the controller (106) is fixed to the top of the mounting plate (114). An air pipe is connected to one outer side of the rectangular tube (102) near the top. One end of the air pipe is connected to the output end of the air pump (115), and the other end of the air pipe passes through the rectangular tube (102) and is connected to the central tube (103). The ventilation groove (512) is connected to the other end of the air pipe.

7. An automatic pressurization device for oil extraction equipment according to claim 1, characterized in that: The top of the pressurizing vertical cylinder (105) is fixed with a downwardly extending partition cylinder (116), and the outer wall of the partition cylinder (116) and the inner wall of the pressurizing vertical cylinder (105) form a pressurizing cavity (117). The inner wall of the rectangular tube (102) and the outer peripheral side of the central tube (103) form a heat-insulating chamber (118). The top of the pressurized vertical cylinder (105) is fixed with a conveying motor (119) that is electrically connected to the controller (106). The output shaft of the conveying motor (119) is located inside the partition cylinder (116) and a conveying auger (120) is fixed thereon.

8. An automatic pressurization device for oil extraction equipment according to claim 7, characterized in that: The outer periphery of the pressurized vertical cylinder (105) is connected to a sampling detection tube (121) that extends into the interior of the partition cylinder (116). A third valve (122) electrically connected to the controller (106) is provided on the periphery of the sampling detection tube (121). A mineralization analyzer (123) is installed on the mounting base plate (101), and the detection port of the mineralization analyzer (123) is connected to the sampling detection tube (121).

9. An automatic pressurization device for oil extraction equipment according to claim 8, characterized in that: The pressurized vertical cylinder (105) has an oil extraction pipe (124) extending into the interior of the partition cylinder (116) through a through-connection on the outer periphery near the top. An oil extraction pump (125) electrically connected to the controller (106) is fixedly installed on the mounting base plate (101). The oil extraction end of the oil extraction pump (125) is connected to one end of the oil extraction pipe (124), and the output end of the oil extraction pump (125) is connected to an oil production and transportation pipeline (126).

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