Temporary plugging performance evaluation experiment device for temporary plugging agent

Abstract

The utility model relates to the technical field of experimental devices, and discloses a temporary plugging agent temporary plugging performance evaluation experimental device which comprises an installation frame, the upper side wall of the installation frame is fixedly connected with a supporting frame, the side wall of the supporting frame is connected with a U-shaped frame through a lifting assembly, and the U-shaped frame is internally and rotatably connected with a same rotating column. And a cavity is formed in the rotating column, and a connecting pipe is inserted into the cavity. When various temporary plugging agents are experimented, the temporary plugging agent after the experiment can be replaced in the experiment process, so that the working efficiency of the experiment device is improved, the temporary plugging agent can be automatically conveyed into the cavity in the rotary column to be detected when the temporary plugging agent is detected, and the temporary plugging agent detection efficiency is improved. And manual perfusion by operators is not needed, so that the experiment convenience of the operators is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental devices, in particular to an experimental device for evaluating the temporary plugging performance of a temporary plugging agent. Background Art

[0002] The temporary plugging and diversion fracturing technology of fractures is to use various temporary plugging control agents to divert the fluid in the formation. Following the principle that the fluid flows in the direction of least resistance, the temporary plugging agent enters the blasthole of the wellbore, and partially enters the fractures or high permeability layers in the formation, and produces filter cake bridge plugging at the blasthole and the high permeability zone, forming a pressure difference value higher than the fracture rupture pressure, so that the subsequent working fluid cannot enter the fracture and high permeability zone, so that the fracturing fluid can enter the high stress area or new fracture layer, promote the formation of new fractures and the change of proppant laying. The diversion agent that produces bridge plugging dissolves in the formation water or fracturing fluid after the construction is completed, and does not pollute the formation. The key to the success of this technology lies in the plugging performance of the temporary plugging agent used, that is, the temporary plugging agent must be able to plug the old fractures in the formation, so that the subsequent working fluid cannot enter the fracture and high permeability zone, so as to ensure that high pressure is held back during construction to achieve the diversion of the fracture. Therefore, the evaluation of the plugging performance of the temporary plugging agent is crucial.

[0003] A water-soluble temporary plugging agent performance evaluation experimental device proposed in the patent authorization announcement number CN 220019532 U relates to the field of experimental equipment technology, including a bottom shell and a vertical plate, the vertical plate is fixedly arranged on one side of the upper surface of the bottom shell, the upper end of the vertical plate is fixedly provided with a top plate, the lower surface of the top plate is fixedly provided with a cylinder, the piston rod end of the cylinder is fixedly provided with a U-shaped plate, the inner side of the U-shaped plate is provided with a rotating column, both sides of the rotating column are fixedly provided with a connecting rod, the outer end of the connecting rod is rotatably connected with the inner wall of the corresponding U-shaped plate, the interior of the rotating column is provided with a plurality of first cavities, the upper side of the plurality of first cavities is provided with a plurality of second cavities, a through groove is provided between the first cavity and the plurality of second cavities, and the lower ends of the plurality of first cavities are fixedly provided with a connecting pipe. The utility model can continuously evaluate the performance of multiple groups of different water-soluble temporary plugging agents, and can improve the efficiency of experimental work.

[0004] When using the existing experimental device, it is necessary to experiment with multiple different temporary plugging agents. Due to the limited placement area on the surface of the device, after the operator finishes the experiment on a batch of temporary plugging agents, it is necessary to suspend the experimental device for a long time to replace the temporary plugging agents, which affects the working efficiency of the experimental device. Utility Model Content

[0005] The utility model aims to solve the problem that in the prior art, when the experimental device is in use, it is necessary to experiment with multiple different temporary plugging agents. Since the placement area on the surface of the device is limited, the operator needs to suspend the experimental device for a long time to replace the temporary plugging agents after the experiment on a batch of temporary plugging agents is completed, thereby affecting the working efficiency of the experimental device. A temporary plugging performance evaluation experimental device for temporary plugging agents is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A temporary plugging performance evaluation experimental device for a temporary plugging agent comprises a mounting frame, an upper side wall of the mounting frame is fixedly connected to a support frame, a side wall of the support frame is connected to a U-shaped frame via a lifting assembly, a rotating column is rotatably connected inside the U-shaped frame, a cavity is provided inside the rotating column, and a connecting pipe is inserted into the cavity, a rotating motor is fixedly connected to the upper inner wall of the mounting frame, a rotating plate is fixedly connected to the output end of the rotating motor, a liquid storage box is fixedly connected to the side wall of the rotating plate via a fixing assembly, and a liquid pump is connected to the upper side wall of the liquid storage box.

[0008] Preferably, the lifting assembly is rotatably connected to a threaded cylinder on the side wall of the support frame, the upper side wall of the support frame is fixedly connected to a driving motor, the output end of the driving motor extends out of the support frame and is fixedly connected to a gear, a gear ring is fixedly provided on the outer side of the threaded cylinder, a threaded rod is threadedly connected to the inner side of the threaded cylinder, and the lower end of the threaded rod is fixedly connected to the upper side wall of the U-shaped plate.

[0009] Preferably, the fixing assembly includes four card frames symmetrically fixedly connected to the upper side walls of the rotating plate, the liquid storage box is placed between two of the card frames on the same side, the left and right sides of the liquid storage box are fixedly connected with card blocks, the card blocks are placed in the card frames, the side walls of the card frames are provided with limiting holes, and limiting pins are inserted in the limiting holes, the upper side walls of the card blocks are provided with limiting grooves matching the limiting pins, the upper end of the limiting pin is fixedly connected with a pull plate, and the same spring is fixedly connected between the pull plate and the card frame.

[0010] Preferably, a handle is fixedly connected to the upper side wall of the pull plate.

[0011] Preferably, a plurality of balls are fixedly connected to the lower side wall of the rotating plate.

[0012] Preferably, a positioning slide plate is fixedly connected to the upper side wall of the support frame, and a positioning slide groove matching the positioning slide plate is formed on the rod wall of the threaded rod.

[0013] Compared with the prior art, the utility model provides a temporary plugging performance evaluation experimental device for a temporary plugging agent, which has the following beneficial effects:

[0014] 1. The temporary plugging performance evaluation experimental device for temporary plugging agents can replace the temporary plugging agents after the experiments are completed when conducting experiments on various temporary plugging agents through the provision of a card frame, a card block, a limit pin and a pull plate, thereby improving the working efficiency of the experimental device.

[0015] 2. The temporary plugging performance evaluation experimental device of the temporary plugging agent can automatically transport the temporary plugging agent to the cavity in the rotating column for testing when testing the temporary plugging agent through the arranged threaded cylinder, driving motor and threaded rod, without the need for manual injection by the operator, thereby improving the convenience of the operator's experiment.

[0016] Moreover, the parts not involved in the device are the same as the prior art or can be implemented by the prior art. The utility model can replace the temporary plugging agent after the experiment when conducting experiments on various temporary plugging agents, thereby improving the working efficiency of the experimental device and can automatically transport the temporary plugging agent to the cavity in the rotating column for testing when testing the temporary plugging agent, without the need for manual perfusion by the operator, thereby improving the convenience of the operator's experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a temporary plugging performance evaluation experimental device for a temporary plugging agent proposed in the utility model;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0019] Figure 3 for Figure 1 Schematic diagram of the enlarged portion B.

[0020] In the figure: 1. installation frame; 2. support frame; 3. U-shaped frame; 4. rotating column; 5. connecting pipe; 6. rotating motor; 7. rotating plate; 8. liquid storage box; 9. liquid pump; 10. threaded cylinder; 11. driving motor; 12. threaded rod; 13. clamping frame; 14. clamping block; 15. limit pin; 16. pull plate; 17. positioning slide plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-3A temporary plugging performance evaluation experimental device for a temporary plugging agent comprises a mounting frame 1, the upper side wall of the mounting frame 1 is fixedly connected to a support frame 2, the side wall of the support frame 2 is connected to a U-shaped frame 3 through a lifting assembly, the U-shaped frame 3 is rotatably connected to a rotating column 4, the interior of the rotating column 4 is provided with a cavity, and a connecting pipe 5 is inserted into the cavity, a rotating motor 6 is fixedly connected to the upper inner wall of the mounting frame 1, a rotating plate 7 is fixedly connected to the output end of the rotating motor 6, a liquid storage box 8 is fixedly connected to the side wall of the rotating plate 7 through a fixing assembly, and a liquid pump 9 is connected to the upper side wall of the liquid storage box 8.

[0023] The lifting assembly is rotatably connected to the threaded cylinder 10 on the side wall of the support frame 2, and the upper side wall of the support frame 2 is fixedly connected to a driving motor 11. The output end of the driving motor 11 extends out of the support frame 2 and is fixedly connected to a gear. The threaded cylinder 10 is fixedly sleeved with a gear ring outside, and the threaded cylinder 10 is threadedly sleeved with a threaded rod 12 inside. The lower end of the threaded rod 12 is fixedly connected to the upper side wall of the U-shaped plate, which can automatically drive the U-shaped frame 13 to move up and down.

[0024] The fixing assembly includes four card frames 13 which are symmetrically fixedly connected to the upper side wall of the rotating plate 7. The liquid storage box 8 is placed between the two card frames 13 on the same side. The left and right sides of the liquid storage box 8 are fixedly connected with card blocks 14. The card blocks 14 are placed in the card frames 13. The side walls of the card frames 13 are provided with limiting holes, and limiting pins 15 are inserted in the limiting holes. The upper side walls of the card blocks 14 are provided with limiting grooves that match the limiting pins 15. The upper end of the limiting pin 15 is fixedly connected with a pull plate 16. The same spring is fixedly connected between the pull plate 16 and the card frame 13. When conducting experiments on various temporary plugging agents, the temporary plugging agents that have been completed in the experiment can be replaced during the experiment, thereby improving the working efficiency of the experimental device.

[0025] A handle is fixedly connected to the upper side wall of the pull plate 16 to facilitate pulling the pull plate 16 .

[0026] A plurality of balls are fixedly connected to the lower side wall of the rotating plate 7 , thereby improving the rotation support of the rotating plate 7 .

[0027] The upper side wall of the support frame 2 is fixedly connected with a positioning slide 17, and the rod wall of the threaded rod 12 is provided with a positioning groove that matches the positioning slide 17. Through the mutual cooperation of the positioning slide 17 and the positioning groove, the threaded rod 12 is prevented from rotating, so that the threaded rod 12 can only move up and down in the vertical direction.

[0028] In the utility model, when in use, after the temporary plugging agent in a liquid storage box 8 is detected, the rotating motor 6 is started, and the rotating motor 6 drives the rotating plate 7 and the liquid storages and 8 on both sides to rotate one hundred and eighty degrees, and then the driving motor 11 can be started to rotate, and the driving motor 11 drives the threaded cylinder 10 to rotate through the mutual cooperation of the gear and the gear ring, and drives the threaded rod 12 to move downward through the thread cooperation, and the threaded rod 12 drives the card frame 13, the rotating column 4 and the connecting pipe 5 to move downward together, so that the connecting pipe 5 and the liquid storage end of the liquid pump 9 are plugged together, and then the liquid pump 9 is started to transport the temporary plugging agent in the liquid storage box 8 to the rotating column 4 for detection. During the detection process, the operator can pull the pull plates 16 on the left and right sides of the right liquid storage box 8, and the pull plates 16 drive the limit pins 15 to disengage from the block 14, and then longitudinally pull out the liquid storage box 8 to replace the temporary plugging agent.

Claims

1. A temporary plugging performance evaluation experimental device for a temporary plugging agent, comprising a mounting frame (1), characterized in that: The upper side wall of the installation frame (1) is fixedly connected to a support frame (2), the side wall of the support frame (2) is connected to a U-shaped frame (3) via a lifting assembly, the U-shaped frame (3) is rotatably connected to a rotating column (4), the interior of the rotating column (4) is provided with a cavity, and a connecting pipe (5) is inserted into the cavity, the upper inner wall of the installation frame (1) is fixedly connected to a rotating motor (6), the output end of the rotating motor (6) is fixedly connected to a rotating plate (7), the side wall of the rotating plate (7) is fixedly connected to a liquid storage box (8) via a fixing assembly, and the upper side wall of the liquid storage box (8) is connected to a liquid pump (9).

2. The temporary plugging performance evaluation experimental device of a temporary plugging agent according to claim 1, characterized in that: The lifting assembly is rotatably connected to a threaded cylinder (10) on the side wall of the support frame (2); the upper side wall of the support frame (2) is fixedly connected to a driving motor (11); the output end of the driving motor (11) extends out of the support frame (2) and is fixedly connected to a gear; a gear ring is fixedly sleeved outside the threaded cylinder (10); a threaded rod (12) is threadedly sleeved inside the threaded cylinder (10); and the lower end of the threaded rod (12) is fixedly connected to the upper side wall of the U-shaped plate.

3. The temporary plugging performance evaluation experimental device of a temporary plugging agent according to claim 2, characterized in that: The fixing assembly comprises four card frames (13) symmetrically fixedly connected to the upper side wall of the rotating plate (7); the liquid storage box (8) is placed between two card frames (13) on the same side; the left and right sides of the liquid storage box (8) are fixedly connected with card blocks (14); the card blocks (14) are placed in the card frames (13); the side walls of the card frames (13) are provided with limit holes, and the limit holes are inserted with limit pins (15); the upper side walls of the card blocks (14) are provided with limit grooves matching the limit pins (15); the upper ends of the limit pins (15) are fixedly connected with a pull plate (16); and the same spring is fixedly connected between the pull plate (16) and the card frame (13).

4. The temporary plugging performance evaluation experimental device of a temporary plugging agent according to claim 3, characterized in that: A handle is fixedly connected to the upper side wall of the pull plate (16).

5. The temporary plugging performance evaluation experimental device of a temporary plugging agent according to claim 4, characterized in that: A plurality of balls are fixedly connected to the lower side wall of the rotating plate (7).

6. The temporary plugging performance evaluation experimental device of a temporary plugging agent according to claim 5, characterized in that: A positioning slide plate (17) is fixedly connected to the upper side wall of the support frame (2), and a positioning slide groove matching the positioning slide plate (17) is provided on the rod wall of the threaded rod (12).

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