A fracturing temporary plugging agent adding device

Abstract

The embodiment of the present application provides a device for adding a temporary plugging agent to a fracturing material, and relates to the field of oilfield engineering technology. A device for adding a temporary plugging agent to a fracturing material comprises: a support mechanism, a material storage mechanism, and a pneumatic transmission mechanism. The support mechanism comprises a support plate, a support leg, and two reinforcement frames, wherein the support leg is fixedly connected to the middle of the upper surface of the support plate, and the two reinforcement frames are respectively located in the middle of both sides of the support plate, and an installation groove is provided in the middle of the rear end of the upper surface of the support plate. By starting the two-way air pump to drive the downward pressure sealing plate to move downward with the ventilation rod, the temporary plugging agent inside the inner cavity of the material storage can be injected into the underground oil well, and then the downward pressure sealing plate at the bottom of the inner cavity of the material storage can be moved upward to inject the temporary plugging agent inside the outer cavity of the material storage into the underground oil well, and then the reciprocating motion of the downward pressure sealing plate improves the continuity of adding the temporary plugging agent by the device.

Description

Technical Field

[0001] The present application relates to the technical field of oilfield engineering, and in particular to a device for adding a temporary fracturing plugging agent. Background Art

[0002] In the related art, a fracturing temporary plugging agent adding device puts the temporary plugging agent into the interior of a tank body, and then continuously injects compressed air or nitrogen into the tank body. At the same time, an air inlet valve and a discharge valve are provided on the device to control the input of air pressure and the output of the temporary plugging agent, so that the temporary plugging agent is discharged from the tank body drain port and finally injected into the underground oil well. However, this method is difficult to control the stability and reliability of the temporary plugging agent discharge process. It is difficult to ensure the injection accuracy of the temporary plugging agent through the method of high-pressure gas injection, and the injection volume is also difficult to control. At the same time, this method is not conducive to the continuous injection of the temporary plugging agent, which in turn affects the injection efficiency of the temporary plugging agent. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a fracturing temporary plugging agent adding device, wherein the process of injecting temporary plugging agent by the fracturing temporary plugging agent adding device is stable and reliable, and the injection amount is precisely controllable, which can achieve the effect of continuous injection and is convenient for practical use.

[0004] A fracturing temporary plugging agent adding device according to an embodiment of the present application includes: a supporting mechanism, a material storage mechanism and a pneumatic transmission mechanism.

[0005] The supporting mechanism comprises a supporting plate, supporting legs and two reinforcing frames, the supporting legs are fixedly connected to the middle part of the upper surface of the supporting plate, the two reinforcing frames are respectively located in the middle parts of both sides of the supporting plate, and a mounting groove is provided in the middle part of the rear end of the upper surface of the supporting plate, the material storage mechanism comprises a material storage barrel, a circular sealing plate, a plurality of secondary discharge pipes and a discharge hopper, the circular sealing plate is connected to the upper part of the material storage barrel by bolts, an outer material storage cavity is provided on the outer side of the material storage barrel, an inner material storage cavity is provided in the middle part of the material storage barrel, the discharge hopper is fixedly connected to the lower end of the material storage barrel, a plurality of secondary discharge pipes are evenly fixed to the bottom of the material storage outer cavity, the lower ends of the plurality of secondary discharge pipes extend to the interior of the discharge hopper, and a second electromagnetic control valve is provided at the lower end of the secondary discharge pipe, and the second electromagnetic control valve is located inside the discharge hopper;

[0006] The air pressure transmission mechanism includes two mounting covers, a fixed long plate, a two-way air pump, a gas transmission cover, a high-pressure gas storage tank, a ventilation rod and a downward pressure sealing plate, the inner bottom surface of each mounting cover is fixedly connected to two gas storage seats, the upper ends of the gas storage seats are fixedly connected to the gas storage rods, the inner wall of the gas storage rod is provided with a sliding groove, the interior of the sliding groove is slidably connected with a sealing block, the upper end of the sealing block is fixedly connected with a sliding support rod, the upper ends of the sliding support rods respectively penetrate the gas storage rods and are fixedly connected with a fixed short plate, the outer walls on both sides of the fixed long plate are fixedly connected to the fixed short plate, the two-way air pump is fixedly connected to the lower part of the outer wall of the mounting cover on one side, the air inlet of the two-way air pump is fixedly connected to a first connecting pipe, and the first connecting pipe is through-connected with the upper end of the gas transmission cover on the side away from the two-way air pump;

[0007] The air outlet of the two-way air pump is fixedly connected to the second connecting pipe, the middle part of the upper end of the high-pressure air storage tank is through-connected with the fourth connecting pipe, the upper part of the second connecting pipe is through-connected with the third connecting pipe, the lower end of the third connecting pipe is fixedly connected to the seventh solenoid control valve, the upper end of the third connecting pipe is through-connected with the fourth connecting pipe, the upper end of the ventilation rod is connected to the lower surface of the fixed long plate by a flange bolt, the rear end of the upper part of the ventilation rod is fixedly connected with a threaded connector, the upper end of the fourth connecting pipe is threadedly connected to the threaded connector, and the middle part of the upper surface of the lower pressure sealing plate is connected to the lower end of the ventilation rod by a flange bolt.

[0008] According to some embodiments of the present application, support seats are fixedly connected to both sides of the lower surface of the support plate, and one end of the support seat away from the center of the support plate is fixedly connected to the reinforcement frame. The upper end of the reinforcement frame is fixedly connected to a reinforcement ring, and the reinforcement ring is sleeved on the middle part of the outer wall of the storage barrel.

[0009] According to some embodiments of the present application, a first annular ventilation pipe is connected through the middle of the upper end of the storage barrel, and a first electromagnetic control valve is provided at the front end of the upper part of the first annular ventilation pipe.

[0010] According to some embodiments of the present application, a first feed hopper and a second feed hopper are fixedly connected to the upper part of the front end outer wall of the material storage barrel, respectively, the rear end of the first feed hopper passes through the material storage outer cavity and extends to the material storage inner cavity, a first one-way valve is arranged in the middle of the first feed hopper, the rear end of the second feed hopper extends to the material storage outer cavity, and a second one-way valve is arranged in the middle of the second feed hopper.

[0011] According to some embodiments of the present application, a discharge pipe is fixedly connected to the middle portion of the lower end of the discharge hopper, and a third electromagnetic control valve is provided on the upper portion of the discharge pipe.

[0012] According to some embodiments of the present application, the upper end of the gas storage seat is fixedly connected to a first ventilation pipe, the lower end of the first ventilation pipe is provided with a throttle valve, and the throttle valve is located inside the gas storage seat.

[0013] According to some embodiments of the present application, the outer walls on both sides of the fixed long plate are respectively fixedly connected with two limit blocks, and the upper part of the mounting cover close to one end of the storage barrel is respectively fixedly connected with two limit frames, and the limit blocks are respectively slidably connected inside the limit frames.

[0014] According to some embodiments of the present application, the rear end of the gas transmission hood is connected to a rectangular sealing plate by bolts, the middle part of the rectangular sealing plate is fixedly connected to a first filter tube, the rear end of the first filter tube body is provided with a fifth electromagnetic control valve, the middle parts of both sides of the gas transmission hood are connected through the middle parts, the side of the transition tube away from the gas transmission hood passes through the mounting hood and is connected to the gas storage seat, and the end of the transition tube located at the gas transmission hood is fixedly connected to a fourth electromagnetic control valve.

[0015] According to some embodiments of the present application, the lower end of the second connecting pipe is connected through a second filter pipe, and the tube body of the second filter pipe is provided with a sixth electromagnetic control valve.

[0016] According to some embodiments of the present application, a pressure relief hole is provided on one side near the middle of the high-pressure gas storage tank, the lower end of the fourth connecting pipe is located inside the high-pressure gas storage tank and is fixedly connected to an eighth solenoid control valve, a pressure relief groove is provided at the lower end of the inner wall of the high-pressure gas storage tank, a plurality of pressure relief springs are fixedly connected to the inner bottom surface of the high-pressure gas storage tank, the upper ends of the pressure relief springs are fixedly connected to a circular mounting seat, the upper end of the circular mounting seat is fixedly connected to a pressure relief piston, the pressure relief piston is slidably connected inside the pressure relief groove, and a pressure relief connecting pipe is fixedly connected to the middle of the lower end of the high-pressure gas storage tank.

[0017] According to some embodiments of the present application, a fracturing temporary plugging agent addition device also includes a booster discharge mechanism, which includes a first gas conversion head, a first pressure sensor, a gas conversion cover, a second annular ventilation pipe, a fifth connecting pipe, a second gas conversion head, a second electric ball valve, a second pressure sensor, a gas conversion plate and a sixth connecting pipe, the first gas conversion head is fixedly connected to the lower part of the outer wall of the rear end of the ventilation rod, the first pressure sensor is fixedly connected to the outer wall of the rear end of the first gas conversion head, the gas conversion cover is fixedly connected to the lower end of the ventilation rod, the rear end of the first gas conversion head is through-connected with three fifth connecting pipes, the second annular ventilation pipe is through-connected to the upper end of the gas conversion cover, the three fifth connecting pipes are all through-connected with the second annular ventilation pipe, the gas conversion plate is fixedly connected to the lower surface of the downward pressure sealing plate, the second gas conversion head is through-connected to the middle part of the lower surface of the ventilation rod, the second pressure sensor is fixedly connected to the middle part of the lower surface of the second gas conversion head, and the sixth connecting pipe is through-connected to the lower part of the second gas conversion head and through-connected to the gas conversion plate.

[0018] According to some embodiments of the present application, a first electric ball valve is disposed in the middle of the first gas conversion head, and a second electric ball valve is disposed in the middle of the second gas conversion head.

[0019] According to some embodiments of the present application, a plurality of first gas flow nozzles are fixedly connected to the outer wall of the gas conversion cover.

[0020] According to some embodiments of the present application, a plurality of second gas flow nozzles are fixedly connected to the lower surface of the gas conversion plate.

[0021] According to some embodiments of the present application, a PLC controller is fixedly connected to the upper portion of the outer wall of the mounting cover on one side, and three control buttons are provided at the lower end of the PLC controller.

[0022] The beneficial effects of the present application are as follows: by starting the two-way air pump to make the ventilation rod drive the downward pressure sealing plate to move downward, the temporary plugging agent inside the inner cavity of the material storage can be injected into the underground oil well, and then the downward pressure sealing plate at the bottom of the inner cavity of the material storage can be moved upward so that the temporary plugging agent inside the outer cavity of the material storage can be injected into the underground oil well, and then the reciprocating motion of the downward pressure sealing plate improves the continuity of adding the temporary plugging agent of the device, and at the same time, by injecting high-pressure gas into the inner cavity and the outer cavity of the material storage and cooperating with the downward pressure sealing plate, the outflow speed and pressure of the temporary plugging agent can be more controllable, and the temporary plugging agent injection process can be made more stable, accurate and reliable.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the front view of a three-dimensional structure of a fracturing temporary plugging agent adding device according to an embodiment of the present application;

[0026] Figure 2 It is a side view stereoscopic structural schematic diagram of a fracturing temporary plugging agent adding device according to an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of a front-section three-dimensional structure of a material storage mechanism according to an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of a front three-dimensional structure of a material storage mechanism according to an embodiment of the present application;

[0029] Figure 5 is a schematic front view of a three-dimensional structure of a pneumatic transmission mechanism according to an embodiment of the present application;

[0030] Figure 6 is a bottom-up stereoscopic structural schematic diagram of a pneumatic transmission mechanism according to an embodiment of the present application;

[0031] Figure 7 It is a partial half-section three-dimensional structural schematic diagram of the gas storage seat, the gas storage rod and the sliding support rod according to an embodiment of the present application;

[0032] Figure 8 According to the embodiment of the present application Figure 7 The enlarged schematic diagram of the half-section three-dimensional structure at A in the middle;

[0033] Fig. 9 is a schematic diagram of a half-section three-dimensional structure of a high-pressure gas storage tank according to an embodiment of the present application;

[0034] Fig.10 is a schematic front view of a three-dimensional structure of a pressurized discharge mechanism according to an embodiment of the present application;

[0035] Fig.11 is a bottom-up stereoscopic structural schematic diagram of a pressurized material discharge mechanism according to an embodiment of the present application;

[0036] Fig.12 is a top view of a half-section three-dimensional structure of a material storage barrel according to an embodiment of the present application;

[0037] Fig.13 It is a partial half-section three-dimensional structural schematic diagram of a fracturing temporary plugging agent adding device according to an embodiment of the present application.

[0038] Icons: 1. Support mechanism; 101. Support plate; 102. Support seat; 103. Mounting slot; 104. Support leg; 105. Reinforcement frame; 106. Reinforcement ring; 2. Material storage mechanism; 201. Material storage barrel; 202. Material storage outer cavity; 203. Material storage inner cavity; 204. Circular sealing plate; 205. First annular ventilation pipe; 206. First electromagnetic control valve; 207. First feed hopper; 208. First one-way valve; 209. Second feed hopper; 210. Second one-way valve; 211. Secondary discharge pipe; 212. Second electromagnetic control valve ; 213, discharge hopper; 214, discharge pipe; 215, third electromagnetic control valve; 3, air pressure transmission mechanism; 301, installation cover; 302, gas storage seat; 303, gas storage rod; 304, first ventilation pipe; 305, throttle valve; 306, sliding groove; 307, sealing block; 308, sliding support rod; 309, fixed short board; 310, fixed long board; 311, limit block; 312, limit frame; 313, two-way air pump; 314, first connecting pipe; 315, gas transmission cover; 316, transfer tube; 317, fourth electromagnetic control valve ; 318, rectangular sealing plate; 319, first filter screen tube; 320, fifth electromagnetic control valve; 321, second connecting pipe; 322, second filter screen tube; 323, sixth electromagnetic control valve; 324, high-pressure gas storage tank; 325, pressure relief hole; 326, third connecting pipe; 327, seventh electromagnetic control valve; 328, fourth connecting pipe; 329, pressure relief piston; 330, eighth electromagnetic control valve; 331, pressure relief connecting pipe; 332, ventilation rod; 333, threaded connector; 334, pressurized sealing plate; 335, pressure relief spring; 336 , pressure relief chute; 337, circular mounting seat; 4, pressurized discharge mechanism; 401, first gas conversion head; 402, first electric ball valve; 403, first pressure sensor; 404, gas conversion cover; 405, first gas flow nozzle; 406, second annular vent pipe; 407, fifth connecting pipe; 408, second gas conversion head; 409, second electric ball valve; 410, second pressure sensor; 411, gas conversion plate; 412, second gas flow nozzle; 413, sixth connecting pipe; 5, PLC controller; 6, control button. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0040] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] A device for adding a temporary fracturing plugging agent according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0048] like Figure 1-Figure 13 According to an embodiment of the present application, a fracturing temporary plugging agent adding device comprises: a supporting mechanism 1, a material storage mechanism 2 and a pneumatic transmission mechanism 3, wherein the supporting mechanism 1 is used to support the material storage mechanism 2 and the pneumatic transmission mechanism 3, so that the material storage mechanism 2 is more stable and less likely to shake during use, the material storage mechanism 2 is used to store the temporary plugging agent, and the pneumatic transmission mechanism 3 can enable the temporary plugging agent to achieve the purpose of reciprocating discharge during the discharging process;

[0049] like Figure 2 As shown, the supporting mechanism 1 includes a supporting plate 101, a supporting leg 104 and two reinforcing frames 105, the supporting leg 104 is fixedly connected to the middle of the upper surface of the supporting plate 101, the two reinforcing frames 105 are respectively located in the middle of both sides of the supporting plate 101, a mounting groove 103 is provided in the middle of the rear end of the upper surface of the supporting plate 101, and the two sides of the lower surface of the supporting plate 101 are respectively fixedly connected with supporting seats 102, and the ends of the supporting seats 102 away from the center of the supporting plate 101 are fixedly connected to the reinforcing frames 105, and the upper ends of the reinforcing frames 105 are fixedly connected with reinforcing rings 106, which are sleeved on the middle of the outer wall of the storage barrel 201. The reinforcing rings 106 can make the storage mechanism 2 less likely to shake during the discharging process, thereby improving the stability of the temporary plugging agent discharging, and further improving the accuracy and reliability of the temporary plugging agent discharging.

[0050] like Figure 3As shown, the material storage mechanism 2 includes a material storage barrel 201, a circular sealing plate 204, a plurality of secondary discharge pipes 211 and a discharge hopper 213. The circular sealing plate 204 is connected to the upper portion of the material storage barrel 201 by bolts. An outer material storage cavity 202 is provided on the outer side of the material storage barrel 201, and an inner material storage cavity 203 is provided in the middle of the material storage barrel 201. Specifically, the outer material storage cavity 202 and the inner material storage cavity 203 can facilitate the staff to add two parts of temporary plugging agents at the same time, which greatly improves the addition efficiency of the temporary plugging agent and the continuity of the adding process. The discharge hopper 213 is fixedly connected to the lower end of the material storage barrel 201, and multiple secondary discharge pipes 211 are evenly fixed at the bottom of the material storage outer cavity 202. The lower ends of the multiple secondary discharge pipes 211 extend to the interior of the discharge hopper 213. The lower end of the secondary discharge pipe 211 is provided with a second electromagnetic control valve 212, and the second electromagnetic control valve 212 is located inside the discharge hopper 213. By closing the second electromagnetic control valve 212, the temporary plugging agent inside the material storage inner cavity 203 will not enter the interior of the material storage outer cavity 202 through the secondary discharge pipe 211 during the addition process, thereby ensuring the stability of the temporary plugging agent addition process. A first annular ventilation pipe 205 is connected to the middle of the upper end of the storage barrel 201, and a first electromagnetic control valve 206 is provided at the front end of the upper part of the first annular ventilation pipe 205. By opening the first electromagnetic control valve 206, the air inside the storage barrel 201 can flow under the action of the first annular ventilation pipe 205, thereby avoiding the situation where negative pressure occurs in the upper part of the storage cavity 203 when the sealing plate 334 is pressed down to press the temporary plugging agent, thereby ensuring the stability of the addition of the temporary plugging agent and improving the accuracy of the addition of the temporary plugging agent.

[0051] like Figure 4 As shown, the upper part of the front end outer wall of the storage barrel 201 is respectively fixedly connected with a first feed hopper 207 and a second feed hopper 209, the rear end of the first feed hopper 207 penetrates the storage outer cavity 202 and extends to the storage inner cavity 203, the middle part of the first feed hopper 207 is provided with a first check valve 208, the rear end of the second feed hopper 209 extends to the storage outer cavity 202, the middle part of the second feed hopper 209 is provided with a second check valve 210, and the middle part of the lower end of the discharge hopper 213 is fixedly connected with a discharge pipe 214 A third electromagnetic control valve 215 is provided on the upper part of the discharge pipe 214. Specifically, the first batch of temporary plugging agent can be added into the interior of the storage cavity 203 through the first feed hopper 207. At this time, the first one-way valve 208 can effectively prevent the gas inside the storage cavity 203 from flowing out to the outside air. The second batch of temporary plugging agent can be added into the interior of the storage outer cavity 202 through the second feed hopper 209. At this time, the second one-way valve 210 can effectively prevent the gas inside the storage outer cavity 202 from flowing out to the outside.

[0052] like Figure 5 and Figure 6As shown, the upper ends of the sliding struts 308 respectively penetrate the gas storage rods 303 and are fixedly connected to the fixed short plates 309, the outer walls on both sides of the fixed long plates 310 are fixedly connected to the fixed short plates 309, and the two-way air pump 313 is fixedly connected to the lower part of the outer wall of the mounting cover 301 on one side, wherein the two-way air pump 313 can achieve gas pressure control within a small range by adjusting the gas pressure in the pump chamber, and by controlling the working cycle and frequency of the two-way air pump 313, the gas pressure value can be accurately controlled to meet the height of the downward pressure sealing plate 334 to descend or rise. The air inlet of the two-way air pump 313 is fixedly connected to the first connecting pipe 314, and the side of the first connecting pipe 314 away from the two-way air pump 313 is connected to the upper end of the gas transmission cover 315;

[0053] The air outlet of the two-way air pump 313 is fixedly connected to the second connecting pipe 321, the middle part of the upper end of the high-pressure air storage tank 324 is through-connected with the fourth connecting pipe 328, the upper part of the second connecting pipe 321 is through-connected with the third connecting pipe 326, the lower end of the third connecting pipe 326 is fixedly connected with the seventh electromagnetic control valve 327, the upper end of the third connecting pipe 326 is through-connected with the fourth connecting pipe 328, the upper end of the ventilation rod 332 is connected to the lower surface of the fixed long plate 310 by a flange bolt, the rear end of the upper part of the ventilation rod 332 is fixedly connected with a threaded connector 333, the upper end of the fourth connecting pipe 328 is threadedly connected to the threaded connector 333, and the middle part of the upper surface of the downward pressure sealing plate 334 is connected to the lower end of the ventilation rod 332 by a flange bolt.

[0054] like Figure 7 and Figure 8 The upper end of the gas storage seat 302 is fixedly connected to the gas storage rod 303, the inner wall of the gas storage rod 303 is provided with a sliding groove 306, the inner part of the sliding groove 306 is slidably connected to the sealing block 307, and the upper end of the sealing block 307 is fixedly connected to the sliding support rod 308. Specifically, by starting the two-way air pump 313, the first connecting pipe 314 starts to inhale air from the inside of the gas transmission cover 315. At this time, opening the fourth electromagnetic control valve 317 allows the transfer pipe 316 to inhale air from the inside of the gas storage seat 302. At this time, the gas storage The seat 302 is in a negative pressure state and draws air from the inside of the sliding groove 306 through the first ventilation pipe 304. At this time, under the action of the throttle valve 305, the smooth outflow of the gas flow inside the sliding groove 306 is guaranteed, avoiding the occurrence of inconsistent air flow absorbed by multiple air storage seats 302, ensuring the stability of the sliding support rod 308 during the slow descent process, and further ensuring that the downward pressure sealing plate 334 is evenly stressed during the up and down movement, thereby improving the sealing of the downward pressure sealing plate 334 during the up and down movement.

[0055] like Fig. 9The pressure relief hole 325 is provided on one side of the high-pressure gas storage tank 324 near the middle, the lower end of the fourth connecting pipe 328 is located inside the high-pressure gas storage tank 324 and is fixedly connected to the eighth electromagnetic control valve 330, the lower end of the inner wall of the high-pressure gas storage tank 324 is provided with a pressure relief chute 336, the inner bottom surface of the high-pressure gas storage tank 324 is fixedly connected with a plurality of pressure relief springs 335, the upper ends of the pressure relief springs 335 are fixedly connected with a circular mounting seat 337, the upper ends of the circular mounting seat 337 are fixedly connected with a pressure relief piston 329, the pressure relief piston 329 is slidably connected inside the pressure relief chute 336, and the middle part of the lower end of the high-pressure gas storage tank 324 is fixedly connected with a pressure relief connecting pipe 331. Specifically, when the temporary blocking agent inside the storage outer cavity 202 and the storage inner cavity 203 is completely discharged, a certain amount of high-pressure gas is accumulated inside the storage barrel 201. At this time, the eighth electromagnetic control valve 330 can be opened to make The high-pressure gas inside the material storage outer cavity 202 and the material storage inner cavity 203 enters the interior of the high-pressure gas storage tank 324 through the fourth connecting pipe 328. At this time, the pressure relief piston 329 begins to move downward inside the pressure relief chute 336 under the action of the gas pressure, and the pressure relief spring 335 begins to be compressed. When the pressure relief piston 329 moves downward to the position of the pressure relief hole 325, the gas pressure will be discharged outward through the pressure relief hole 325, thereby achieving the effect of reducing the pressure. At the same time, discharging the high-pressure gas inside the material storage barrel 201 can reduce the burden on the material storage barrel 201 and the sealing components, extend their service life, and also reduce the pressure of the material storage barrel. When the gas pressure inside the material storage barrel 201 is reduced, it is also convenient for the staff to re-add the temporary plugging agent later. At the same time, slow pressure relief is performed through the high-pressure gas storage tank 324, which can control the pressure release speed, reduce the occurrence of emergencies, and improve the safety of operation.

[0056] like Fig.10 , Fig.11 , Fig.12 and Fig.13In the related art, a fracturing temporary plugging agent adding device is shown. In the process of discharging the temporary plugging agent, the first connecting pipe 314 and the transfer pipe 316 can start to absorb air by starting the two-way air pump 313 to inhale air, so that the sliding support rod 308 drives the fixed short plate 309 and the fixed long plate 310 to start to move downward slowly and steadily, and at the same time drives the ventilation rod 332 and the downward pressure sealing plate 334 to start to move downward steadily. At this time, the temporary plugging agent inside the storage cavity 203 begins to be injected into the underground oil well under the action of the air pressure generated by the downward pressure sealing plate 334. After the temporary plugging agent inside the storage cavity 203 is added, the two-way air pump 313 is started in the reverse direction to make the sliding support rod 308 move upward steadily inside the gas storage rod 303, so that the ventilation rod 332 drives the downward pressure sealing plate 334. 4 moves upward steadily. At this time, the temporary plugging agent inside the material storage outer cavity 202 begins to be injected into the underground oil well under the push of the air pressure generated by the downward pressing sealing plate 334, thereby completing the temporary plugging agent addition work. At this time, the downward pressing sealing plate 334 returns to its original position, and the staff can add temporary plugging agent to the material storage inner cavity 203 and the material storage outer cavity 202 again, and then start the two-way air pump 313 to inject the temporary plugging agent inside the material storage inner cavity 203 and the material storage outer cavity 202 into the underground oil well, thereby improving the continuity of the temporary plugging agent addition of the device. However, during the reciprocating movement of the downward pressing sealing plate 334, the small amount of air pressure generated makes it difficult to accurately control the outflow speed and pressure of the temporary plugging agent, thereby making it difficult to control the discharge amount of the temporary plugging agent and to ensure the stability of the temporary plugging agent injection.

[0057] The inventor has solved the technical problem after long-term practical research. The fracturing temporary plugging agent adding device also includes a booster discharge mechanism 4, which includes a first gas conversion head 401, a first pressure sensor 403, a gas conversion cover 404, a second annular ventilation pipe 406, a fifth connecting pipe 407, a second gas conversion head 408, a second electric ball valve 409, a second pressure sensor 410, a gas conversion plate 411 and a sixth connecting pipe 413. The first gas conversion head 401 is fixedly connected to the lower part of the outer wall of the rear end of the ventilation rod 332, the first pressure sensor 403 is fixedly connected to the outer wall of the rear end of the first gas conversion head 401, and the gas conversion plate 411 is fixedly connected to the lower part of the outer wall of the rear end of the ventilation rod 332. The cover 404 is fixedly connected to the lower end of the ventilation rod 332, the rear end of the first gas conversion head 401 is connected with three fifth connecting pipes 407, the second annular ventilation pipe 406 is connected to the upper end of the gas conversion cover 404, the three fifth connecting pipes 407 are connected to the second annular ventilation pipe 406, the gas conversion plate 411 is fixedly connected to the lower surface of the pressing sealing plate 334, the second gas conversion head 408 is connected to the middle of the lower surface of the ventilation rod 332, the second pressure sensor 410 is fixedly connected to the middle of the lower surface of the second gas conversion head 408, the sixth connecting pipe 411 is fixedly connected to the lower surface of the pressing sealing plate 334, the second gas conversion head 408 is connected to the middle of the lower surface of the ventilation rod 332, the second pressure sensor 410 is fixedly connected to the middle of the lower surface of the second gas conversion head 408, and the sixth connecting pipe 411 is fixedly connected to the lower surface of the pressing sealing plate 334. 13 is connected to the lower part of the second gas conversion head 408 and is connected to the gas conversion plate 411. Specifically, before the downward pressure sealing plate 334 moves downward, the first connecting pipe 314 is activated to suck air from the inside of the gas transmission cover 315, and the fourth electromagnetic control valve 317 is closed and the fifth electromagnetic control valve 320 is opened. At this time, the gas enters the inside of the ventilation rod 332 through the second connecting pipe 321, the third connecting pipe 326 and the fourth connecting pipe 328, and then the first electric ball valve 402 is closed and the second electric ball valve 409 is opened, so that the second gas conversion head 4 08 The internal gas enters the gas conversion plate 411 through the sixth connecting pipe 413, and is then injected between the downward pressing sealing plate 334 and the temporary plugging agent through multiple second gas flow nozzles 412. At this time, the gas pressure of the injected gas can be accurately monitored by the second pressure sensor 410. When the pressure reaches the specified value, the second electric ball valve 409 can be closed. At this time, the outflow speed and pressure of the temporary plugging agent can be accurately controlled. The injected high-pressure gas can be transferred to the temporary plugging agent by pressing down the sealing plate 334, thereby making the outflow speed and pressure of the temporary plugging agent more controllable and making its outflow process more stable.

[0058] Specifically, the working principle of the temporary plugging agent adding device for fracturing is as follows: first, the temporary plugging agent is added to the interior of the storage cavity 203 through the first feed hopper 207, and then the temporary plugging agent is added to the interior of the storage cavity 202 through the second feed hopper 209, and then the two-way air pump 313 is started to make the first connecting pipe 314 suck air from the interior of the gas transmission cover 315, and at the same time, the fourth electromagnetic control valve 317 is closed and the fifth electromagnetic control valve 320 and the seventh electromagnetic control valve 327 are opened, and the sixth electromagnetic control valve 323 and the eighth electromagnetic control valve 330 are closed at the same time. At this time, the gas sucked by the two-way air pump 313 enters through the second connecting pipe 321 The gas flows into the interior of the fourth connecting pipe 328, and then enters the interior of the ventilation rod 332 through the fourth connecting pipe 328, while closing the first electric ball valve 402 and opening the second electric ball valve 409. At this time, the injected gas will enter the interior of the gas conversion plate 411 through the second gas conversion head 408 and the sixth connecting pipe 413, and then enter the interior of the storage cavity 203 through multiple second gas flow nozzles 412. At this time, the injected gas will continue to accumulate between the temporary plugging agent and the downward pressure sealing plate 334, and then the second pressure sensor 410 can be used to monitor the pressure of the gas inside the storage cavity 203 in real time. When the gas pressure reaches When the pressure reaches the specified value, the second electric ball valve 409 is automatically closed. At this time, there is high-pressure gas between the temporary plugging agent in the storage cavity 203 and the downward pressure sealing plate 334. Then, by closing the seventh electromagnetic control valve 327 and opening the sixth electromagnetic control valve 323, the gas sucked in by the two-way air pump 313 can only be discharged to the outside air through the second filter pipe 322. At the same time, the fifth electromagnetic control valve 320 is closed and the fourth electromagnetic control valve 317 is opened. At this time, the air inside the sliding groove 306 enters the interior of the gas storage seat 302 through the first ventilation pipe 304 and the throttle valve 305. At this time, the air inside the gas storage seat 302 is discharged through the transfer The tube 316 enters the interior of the gas transmission cover 315 and is sucked into the interior of the two-way air pump 313 through the first connecting tube 314. At this time, the sliding support rod 308 drives the fixed short plate 309, the fixed long plate 310, the gas storage rod 303 and the downward pressing sealing plate 334 to move downward steadily in the material storage cavity 203, and at the same time closes the second electromagnetic control valve 212 and opens the third electromagnetic control valve 215 and the first electromagnetic control valve 206. At this time, during the downward stable movement of the downward pressing sealing plate 334, the high-pressure gas pushes the temporary plugging agent toward the inside of the discharge hopper 213 and the discharge pipe 214, and finally injects it into the underground oil well;

[0059] When the temporary plugging agent inside the material storage cavity 203 is added, the sealing plate 334 is pressed down and located at the bottom of the material storage cavity 203. At this time, the first electromagnetic control valve 206 and the second electric ball valve 409 are closed and the first electric ball valve 402 is opened. At this time, gas is injected toward the inside of the ventilation rod 332 through the two-way air pump 313. At this time, the gas inside the ventilation rod 332 enters the interior of the gas conversion cover 404 through the first gas conversion head 401, the fifth connecting pipe 407 and the second annular ventilation pipe 406, and then enters the interior of the material storage cavity 203 and the interior of the material storage outer cavity 202 through multiple first gas circulation nozzles 405. At this time, the injected gas will continuously accumulate inside the material storage outer cavity 202 and the upper part of the material storage cavity 203. The sensor 403 monitors the gas pressure in real time. When the gas pressure reaches the specified value, the first electric ball valve 402 is closed and the sixth electromagnetic control valve 323 is opened. Then, the two-way air pump 313 draws gas from the outside air through the second filter pipe 322 and transmits it to the inside of the gas transmission cover 315 through the first connecting pipe 314. At this time, the fifth electromagnetic control valve 320 is closed and the two fourth electromagnetic control valves 317 are opened. At this time, the gas enters the inside of the gas storage seat 302 through the transfer pipe 316, and then enters the inside of the sliding groove 306 through the first ventilation pipe 304 and the throttle valve 305. At this time, the sealing block 307 starts to drive the sliding support rod 308 to move slowly upward under the gas pressure, thereby driving the fixed short plate 309, the fixed long plate 310, and the storage The gas rod 303 and the downward pressure sealing plate 334 move upward smoothly inside the storage cavity 203, and at the same time open the second electromagnetic control valve 212. At this time, the temporary plugging agent inside the storage cavity 202 begins to enter the discharge hopper 213 and the discharge pipe 214 through the secondary discharge pipe 211 under the action of the downward pressure sealing plate 334 and the high-pressure gas, and is finally injected into the underground oil well. When the work is completed, the downward pressure sealing plate 334 returns to its original position again. At this time, due to the excessive air pressure inside the storage barrel 201, the seventh electromagnetic control valve 327 is closed and the eighth electromagnetic control valve 330, the first electric ball valve 402 and the second electric ball valve 409 are opened. At this time, the excessive air pressure inside the storage barrel 201 will be discharged through the gas conversion cover 404 and the gas conversion The plate 411 enters the interior of the vent rod 332, and then enters the interior of the high-pressure gas storage tank 324 through the fourth connecting pipe 328. At this time, the pressure relief piston 329 begins to move downward inside the pressure relief chute 336 under the action of the gas pressure, and the pressure relief spring 335 begins to be compressed. When the pressure relief piston 329 moves downward to the position of the pressure relief hole 325, the gas pressure will be discharged outward through the pressure relief hole 325, thereby achieving the effect of reducing the pressure. At this time, the staff will add a temporary plugging agent toward the interior of the storage cavity 203 through the first feed hopper 207, and add a temporary plugging agent toward the interior of the storage cavity 202 through the second feed hopper 209. After the temporary plugging agent is added, the above actions are repeated again to realize the injection of the temporary plugging agent into the underground oil well.

[0060] It should be noted that the specific models and specifications of the first solenoid control valve 206, the first one-way valve 208, the second one-way valve 210, the second solenoid control valve 212, the third solenoid control valve 215, the throttle valve 305, the two-way air pump 313, the fourth solenoid control valve 317, the fifth solenoid control valve 320, the sixth solenoid control valve 323, the seventh solenoid control valve 327, the eighth solenoid control valve 330, the first electric ball valve 402, the first pressure sensor 403, the second electric ball valve 409, the second pressure sensor 410, the PLC controller 5 and the control button 6 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in the field, so it will not be repeated in detail.

[0061] The power supply and principles of the first solenoid control valve 206, the first one-way valve 208, the second one-way valve 210, the second solenoid control valve 212, the third solenoid control valve 215, the two-way air pump 313, the fourth solenoid control valve 317, the fifth solenoid control valve 320, the sixth solenoid control valve 323, the seventh solenoid control valve 327, the eighth solenoid control valve 330, the first electric ball valve 402, the first pressure sensor 403, the second electric ball valve 409, the second pressure sensor 410, the PLC controller 5 and the control button 6 are clear to those skilled in the art and will not be described in detail herein.

[0062] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0063] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A fracturing temporary plugging agent adding device, characterized in that: include: A support mechanism (1), the support mechanism (1) comprising a support plate (101), a support leg (104) and two reinforcement frames (105), the support leg (104) being fixedly connected to the middle of the upper surface of the support plate (101), the two reinforcement frames (105) being respectively located in the middle of both sides of the support plate (101), and a mounting groove (103) being provided in the middle of the rear end of the upper surface of the support plate (101); A material storage mechanism (2), the material storage mechanism (2) comprising a material storage barrel (201), a circular sealing plate (204), a plurality of secondary discharge pipes (211) and a discharge hopper (213), the circular sealing plate (204) being connected to the upper portion of the material storage barrel (201) by means of bolts, an outer material storage cavity (202) being provided on the outer side of the material storage barrel (201), an inner material storage cavity (203) being provided in the middle of the material storage barrel (201), the discharge hopper (213) being fixedly connected to the lower end of the material storage barrel (201), a plurality of the secondary discharge pipes (211) being evenly fixed to the bottom of the outer material storage cavity (202), the lower ends of the plurality of the secondary discharge pipes (211) all extending to the interior of the discharge hopper (213), a second electromagnetic control valve (212) being provided at the lower end of the secondary discharge pipe (211), the second electromagnetic control valve (212) being located inside the discharge hopper (213); A gas pressure transmission mechanism (3), the gas pressure transmission mechanism (3) comprising two mounting covers (301), a fixed long plate (310), a bidirectional air pump (313), a gas transmission cover (315), a high-pressure gas storage tank (324), a vent rod (332) and a downward pressure sealing plate (334), the inner bottom surface of each mounting cover (301) being fixedly connected to two gas storage seats (302), the upper ends of the gas storage seats (302) being fixedly connected to gas storage rods (303), the inner walls of the gas storage rods (303) being provided with sliding grooves (306), the interior of the sliding grooves (306) being slidably connected to sealing blocks (307), the sealing blocks (307) The upper end of the sealing block (307) is fixedly connected to a sliding support rod (308), the upper ends of the sliding support rods (308) respectively penetrate the gas storage rods (303) and are fixedly connected to the fixed short plates (309), the outer walls on both sides of the fixed long plates (310) are fixedly connected to the fixed short plates (309), the two-way air pump (313) is fixedly connected to the lower part of the outer wall of the mounting cover (301) on one side, the air inlet of the two-way air pump (313) is fixedly connected to a first connecting pipe (314), and the first connecting pipe (314) is connected to the upper end of the gas transmission cover (315) on the side away from the two-way air pump (313); The air outlet of the bidirectional air pump (313) is fixedly connected to a second connecting pipe (321); the middle of the upper end of the high-pressure gas storage tank (324) is connected to a fourth connecting pipe (328); the upper part of the second connecting pipe (321) is connected to a third connecting pipe (326); the lower end of the third connecting pipe (326) is fixedly connected to a seventh electromagnetic control valve (327); the upper end of the third connecting pipe (326) is connected to the fourth connecting pipe (328); the upper end of the ventilation rod (332) is connected to the lower surface of the fixed long plate (310) via a flange bolt; the rear end of the upper part of the ventilation rod (332) is fixedly connected to a threaded connector (333); the upper end of the fourth connecting pipe (328) is threadedly connected to the threaded connector (333); and the middle of the upper surface of the downward pressure sealing plate (334) is connected to the lower end of the ventilation rod (332) via a flange bolt.

2. A fracturing temporary plugging agent adding device according to claim 1, characterized in that: Support seats (102) are fixedly connected to both sides of the lower surface of the support plate (101), and one end of the support seat (102) away from the center of the support plate (101) is fixedly connected to the reinforcement frame (105). The upper end of the reinforcement frame (105) is fixedly connected to a reinforcement ring (106), and the reinforcement ring (106) is sleeved on the middle part of the outer wall of the storage barrel (201).

3. A fracturing temporary plugging agent adding device according to claim 1, characterized in that: A first annular ventilation pipe (205) is connected through the middle of the upper end of the material storage barrel (201), and a first electromagnetic control valve (206) is provided at the front end of the upper part of the first annular ventilation pipe (205).

4. A fracturing temporary plugging agent adding device according to claim 1, characterized in that: The upper part of the front end outer wall of the material storage barrel (201) is fixedly connected to a first feed hopper (207) and a second feed hopper (209), the rear end of the first feed hopper (207) passes through the material storage outer cavity (202) and extends to the material storage inner cavity (203), a first one-way valve (208) is arranged in the middle of the first feed hopper (207), the rear end of the second feed hopper (209) extends to the material storage outer cavity (202), and a second one-way valve (210) is arranged in the middle of the second feed hopper (209).

5. The device for adding temporary fracturing plugging agent according to claim 1, characterized in that: A discharge pipe (214) is fixedly connected to the middle of the lower end of the discharge hopper (213), and a third electromagnetic control valve (215) is provided on the upper part of the discharge pipe (214).

6. A fracturing temporary plugging agent adding device according to claim 1, characterized in that: The upper end of the gas storage seat (302) is fixedly connected to a first ventilation pipe (304), and the lower end of the first ventilation pipe (304) is provided with a throttle valve (305), and the throttle valve (305) is located inside the gas storage seat (302).

7. The device for adding temporary fracturing plugging agent according to claim 1, characterized in that: The outer walls on both sides of the fixed long plate (310) are respectively fixedly connected to two limit blocks (311), and the upper part of the mounting cover (301) close to one end of the material storage barrel (201) is respectively fixedly connected to two limit frames (312), and the limit blocks (311) are respectively slidably connected inside the limit frames (312).

8. The device for adding temporary fracturing plugging agent according to claim 1, characterized in that: The rear end of the gas transmission hood (315) is connected to a rectangular sealing plate (318) via bolts, the middle of the rectangular sealing plate (318) is fixedly connected to a first filter screen tube (319), the rear end of the first filter screen tube (319) is provided with a fifth electromagnetic control valve (320), the middle of both sides of the gas transmission hood (315) are connected through the middle of the transfer tube (316), the side of the transfer tube (316) away from the gas transmission hood (315) passes through the mounting hood (301) and is connected to the gas storage seat (302), and the end of the transfer tube (316) located on the gas transmission hood (315) is fixedly connected to a fourth electromagnetic control valve (317).

9. A fracturing temporary plugging agent adding device according to claim 1, characterized in that: The lower end of the second connecting pipe (321) is connected to a second filter pipe (322), and the body of the second filter pipe (322) is provided with a sixth electromagnetic control valve (323).

10. The device for adding temporary fracturing plugging agent according to claim 1, characterized in that: A pressure relief hole (325) is provided on one side near the middle of the high-pressure gas storage tank (324); the lower end of the fourth connecting pipe (328) is located inside the high-pressure gas storage tank (324) and is fixedly connected to an eighth electromagnetic control valve (330); a pressure relief chute (336) is provided at the lower end of the inner wall of the high-pressure gas storage tank (324); a plurality of pressure relief springs (335) are fixedly connected to the inner bottom surface of the high-pressure gas storage tank (324); the upper ends of the pressure relief springs (335) are fixedly connected to a circular mounting seat (337); the upper end of the circular mounting seat (337) is fixedly connected to a pressure relief piston (329); the pressure relief piston (329) is slidably connected inside the pressure relief chute (336); and a pressure relief connecting pipe (331) is fixedly connected to the middle of the lower end of the high-pressure gas storage tank (324).

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