Temporary plugging performance testing device for fracture temporary plugging diverting agent

Abstract

The utility model discloses a temporary plugging performance testing device for a fracturing temporary plugging diverting agent, which belongs to the technical field of petrochemical engineering and comprises a crack testing shell, a liquid storage tank is arranged in the crack testing shell, and two combined plates are slidably connected in the crack testing shell. Movable plates are fixedly connected to the side faces, away from each other, of the two combination plates, two adjusting bolts are rotatably connected to the interior of the crack testing shell, each adjusting bolt is in threaded connection with the corresponding movable plate, two sets of positioning holes are formed in the left side face of each movable plate, and two positioning rods are slidably connected to the interior of the crack testing shell; and each positioning rod is positioned in one positioning hole. According to the temporary plugging performance testing device for the fracture temporary plugging diverting agent, through cooperation of a plurality of assemblies, the problem that the width of an experimental crack cannot be adjusted is solved, the performance of temporary plugging agents in cracks with different widths can be tested, and the applicability of the temporary plugging performance testing device for the fracture temporary plugging diverting agent is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of petrochemical industry, and particularly relates to a temporary plugging performance testing device for fracturing temporary plugging diverting agents. BACKGROUND

[0002] The temporary plugging agent is a necessary chemical reagent for the hydraulic fracturing of low-permeability oil and gas reservoirs. During the fracturing operation, the temporary plugging agent is squeezed into the wellbore and the near-wellbore zone, and becomes soft under the action of formation pressure and temperature, thereby plugging the original rock cracks and forming a shield to effectively prevent the fracturing fluid from entering the old cracks. The performance of the temporary plugging agent directly affects the hydraulic fracturing operation. Therefore, it is necessary to test the performance of the temporary plugging agent.

[0003] The utility model with the authorized publication number CN210863689U discloses a temporary plugging performance testing device for fracturing temporary plugging diverting agents, which comprises an injection unit and a simulated crack unit. The injection unit is used to inject fracturing fluid into the simulated crack unit. The simulated crack unit comprises a temporary plugging diverting agent storage container, a core column, and a holder used to clamp the temporary plugging diverting agent storage container and the core column.

[0004] The above technical solution has the advantages of simple structure, convenient use, low manufacturing cost, and convenient and accurate use for testing or evaluating the temporary plugging performance of different temporary plugging diverting agents in hydraulic fracturing. However, the above technical solution cannot adjust the experimental crack width and cannot test the performance of temporary plugging agents in cracks with different widths, thereby reducing the applicability of the temporary plugging performance testing device for fracturing temporary plugging diverting agents.

[0005] Therefore, the temporary plugging performance testing device for fracturing temporary plugging diverting agents is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The application aims to solve the problem that the width cannot be adjusted in the prior art, and proposes a temporary plugging performance testing device for fracturing temporary plugging diverting agents.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] The application discloses a kind of fracturing temporary plugging steering agent temporary plugging performance testing device, including crack test shell, the inside of the crack test shell is provided with liquid storage tank, the inside of the crack test shell is slidably connected with two combination plates, the side of two the combination plates away from each other is fixedly connected with moving plate, the inside of the crack test shell is rotatably connected with two adjusting bolts, each the adjusting bolt is threadedly connected with moving plate, the left side of each the moving plate is provided with two groups of positioning holes, the inside of the crack test shell is slidably connected with two positioning rods, each the positioning rod is located in one of positioning holes, the outer surface of each the positioning rod is fixedly connected with auxiliary ring, the left end of each the auxiliary ring is fixedly connected with reset spring, the left end of each the reset spring is fixedly connected with the inside wall of crack test shell.

[0009] Preferably, the front and back of each combination plate are fixedly connected with a stabilizing block, and each stabilizing block is slidably connected to the inside of the crack test shell.

[0010] Preferably, the right side of the crack test shell is provided with a liquid storage tank, the bottom end of the liquid storage tank is fixedly connected with a liquid delivery pipe, and the end of the liquid delivery pipe close to the crack test shell penetrates the crack test shell and extends into the inside of the liquid storage tank.

[0011] Preferably, the inner wall of the liquid delivery pipe is fixedly connected with a pressure sensor, and the outer surface of the liquid delivery pipe is fixedly connected with a pressure pump.

[0012] Preferably, the outer surface of the adjusting bolt is sleeved with an auxiliary bearing, and the auxiliary bearing is embedded in the inside of the crack test shell.

[0013] Preferably, the back of the crack test shell is fixedly connected with a liquid outlet pipe, and the end of the liquid outlet pipe away from the crack test shell is fixedly connected with a liquid outlet container.

[0014] Preferably, the left ends of the two positioning rods are fixedly connected with a stop block, and the left side of the stop block is fixedly connected with an auxiliary handle.

[0015] Preferably, the outer surface of the auxiliary handle is fixedly connected with two firm rings, and the right end of each firm ring is fixedly connected with the left side of the stop block.

[0016] In summary, the technical effects and advantages of the present application are:

[0017] By setting the crack test shell, liquid storage tank, combination plate, moving plate, adjusting bolt, positioning hole, positioning rod, auxiliary ring and reset spring, the positioning rod is pulled out of the positioning hole, and the limiting relationship of the moving plate is released, and the reset spring is compressed, and then the adjusting bolt is rotated to drive the two moving plates to move, so that the gap between the two combination plates is enlarged or reduced, and then the reset spring is reset by the elastic force of the reset spring, and then the positioning rod is inserted into one of the positioning holes, so that the current position of the moving plate and the combination plate is further locked, and the problem that the experimental crack width cannot be adjusted is solved, the performance of the temporary plugging agent in different width cracks can be tested, and the applicability of the fracturing temporary plugging diverting agent performance testing device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic view of the crack test shell of the utility model;

[0019] Figure 2 It is a sectional three-dimensional structural schematic view of the liquid storage tank of the utility model;

[0020] Figure 3 It is a sectional three-dimensional structural schematic view of the positioning rod of the utility model;

[0021] Figure 4 It is a sectional three-dimensional structural schematic view of the liquid storage tank of the utility model.

[0022] In the drawing: 1, crack test shell; 2, liquid storage tank; 3, combination plate; 4, moving plate; 5, adjusting bolt; 6, positioning hole; 7, positioning rod; 8, auxiliary ring; 9, reset spring; 10, stabilizing block; 11, liquid storage tank; 12, liquid delivery pipe; 13, pressure sensor; 14, pressure pump; 15, auxiliary bearing; 16, liquid outlet container; 17, liquid outlet pipe; 18, stop block; 19, auxiliary handle; 20, firm ring. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] REFERENCE Figures 1-4The utility model provides a kind of fracturing temporary plugging diverting agent temporary plugging performance testing device, including crack test shell 1, crack test shell 1 is internally provided with liquid storage tank 2, two combination plates 3 are slidably connected in the inside of crack test shell 1, the front and back of each combination plate 3 are fixedly connected with stabilizing block 10, each stabilizing block 10 is slidably connected in the inside of crack test shell 1, stabilizing block 10 can move simultaneously with combination plate 3, and the friction generated by itself in the moving process is used to improve the stability of combination plate 3 when moving, prevent jamming.

[0025] The side face of two combination plates 3 away from each other is fixedly connected with moving plate 4, two adjusting bolts 5 are rotatably connected in the inside of crack test shell 1, the right side of crack test shell 1 is provided with liquid storage tank 11, liquid storage tank 11 is fixedly connected with infusion tube 12 at bottom end, the end of infusion tube 12 close to crack test shell 1 penetrates crack test shell 1 and extends to the inside of liquid storage tank 2, by cooperation of liquid storage tank 11 and infusion tube 12, temporary plugging agent previously added in liquid storage tank 11 can be conducted into crack test shell 1 by infusion tube 12, to facilitate subsequent testing.

[0026] The inner wall of infusion tube 12 is fixedly connected with pressure sensor 13, the outer surface of infusion tube 12 is fixedly connected with pressure pump 14, the pressure of temporary plugging agent is applied by pressure pump 14, and the current pressure value is monitored and displayed by pressure sensor 13, so that the pressure performance of temporary plugging agent is conveniently tested.

[0027] Each adjusting bolt 5 is threadedly connected with moving plate 4, the outer surface of adjusting bolt 5 is provided with auxiliary bearing 15, auxiliary bearing 15 is embedded in the inside of crack test shell 1, auxiliary bearing 15 can reduce the friction generated when adjusting bolt 5 rotates, so that adjusting bolt 5 is more sensitive when rotating, and also can reduce the abrasion speed of adjusting bolt 5 when rotating, increase the service life of adjusting bolt 5.

[0028] The left side of each moving plate 4 is provided with two sets of positioning holes 6, two positioning rods 7 are slidably connected in the inside of crack test shell 1, the back of crack test shell 1 is fixedly connected with liquid outlet pipe 17, the end of liquid outlet pipe 17 away from crack test shell 1 is fixedly connected with liquid outlet container 16, liquid outlet pipe 17 can guide temporary plugging agent flowing out of crack test shell 1, and guide it into liquid outlet container 16, so as to save temporary plugging agent.

[0029] Each positioning rod 7 is located inside one of the positioning holes 6, and the outer surface of each positioning rod 7 is fixedly connected with an auxiliary ring 8; the left ends of the two positioning rods 7 are fixedly connected with a stop block 18, and the left side of the stop block 18 is fixedly connected with an auxiliary handle 19; through cooperation of the stop block 18 and the auxiliary handle 19, a good stress position can be provided for the positioning rod 7, and convenience in pulling the positioning rod 7 is increased; the stop block 18 and the two positioning rods 7 can be moved by pulling the auxiliary handle 19.

[0030] The left end of each auxiliary ring 8 is fixedly connected with a reset spring 9, and the left end of each reset spring 9 is fixedly connected with the inner side wall of the fracture testing shell 1; the outer surface of the auxiliary handle 19 is fixedly connected with two firm rings 20, and the right end of each firm ring 20 is fixedly connected with the left side of the stop block 18; the firm ring 20 can increase the fixed connection area of the auxiliary handle 19 and the stop block 18, so that the connection relationship between the two is more firm, and the possibility of fracture at the connection after long-time use is prevented, and the firmness of the device is increased.

[0031] The working principle of the utility model is: in use, first, the pressure sensor 13 and the pressure pump 14 are connected with power supply; when performance test of the temporary plugging agent is needed, the temporary storage agent in the liquid storage tank 11 is conducted into the liquid storage groove 2 through cooperation of the pressure pump 14 and the infusion tube 12, and then enters the gap between the two combination plates 3 and is plugged, and then the pressure of the temporary storage agent is continuously increased through the pressure pump 14, and the pressure is monitored through the pressure sensor 13; when the temporary storage agent is disabled due to excessive pressure, it is discharged into the liquid outlet container 16 through the liquid outlet pipe 17, at the same time, the pressure pump 14 stops running, and the pressure sensor 13 saves the maximum pressure value in the process, and then the performance test ability of the temporary storage agent is realized; when the gap between the combination plates 3 needs to be changed, the auxiliary handle 19 is pulled, and then the stop block 18 and the two positioning rods 7 are moved, and then the stop block 18 is removed from the positioning hole 6 and the limiting relationship with the moving plate 4 is removed; at this time, the adjusting bolt 5 is rotated, and then the moving plate 4 starts to move due to the threaded relationship, and simultaneously drives the combination plate 3 to move, so that the gap between the two combination plates 3 changes; when the appropriate gap is reached, the auxiliary handle 19 is loosened, the positioning rod 7 is reset by the rebound force generated by the reset spring 9, and is inserted into the appropriate positioning hole 6, so that the current position of the moving plate 4 is locked, and the combination plate 3 is prevented from moving, and the ability of testing different width gaps is realized, and the use effect of the fracturing temporary plugging diverting agent performance test device is effectively improved.

[0032] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0033] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0034] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and it should be covered in the protection scope of the utility model.

Claims

1. A device for testing the temporary plugging performance of a fracturing temporary plugging diverting agent, comprising a fracture test housing (1), characterized in that: The inside of the crack test shell (1) is provided with a liquid storage tank (2), the inside of the crack test shell (1) is slidably connected with two combination plates (3), the side away from each other of the two combination plates (3) is fixedly connected with a moving plate (4), the inside of the crack test shell (1) is rotatably connected with two adjusting bolts (5), each adjusting bolt (5) is threadedly connected with the moving plate (4), the left side of each moving plate (4) is provided with two groups of positioning holes (6), the inside of the crack test shell (1) is slidably connected with two positioning rods (7), each positioning rod (7) is located in one of the positioning holes (6), the outer surface of each positioning rod (7) is fixedly connected with an auxiliary ring (8), the left end of each auxiliary ring (8) is fixedly connected with a return spring (9), and the left end of each return spring (9) is fixedly connected with the inner side wall of the crack test shell (1).

2. The fracturing temporary plugging diverting agent temporary plugging performance testing device according to claim 1, characterized in that: The front and back of each combination plate (3) is fixedly connected with a stabilizing block (10), and each stabilizing block (10) is slidably connected to the inside of the crack test shell (1).

3. The fracturing temporary plugging diverting agent temporary plugging performance testing device according to claim 1, characterized in that: The right side of the crack test shell (1) is provided with a liquid storage tank (11), the bottom end of the liquid storage tank (11) is fixedly connected with a liquid delivery pipe (12), and the end of the liquid delivery pipe (12) close to the crack test shell (1) penetrates the crack test shell (1) and extends into the liquid storage tank (2).

4. The fracturing temporary plugging diverting agent temporary plugging performance testing device according to claim 3, characterized in that: The inner wall of the liquid delivery pipe (12) is fixedly connected with a pressure sensor (13), and the outer surface of the liquid delivery pipe (12) is fixedly connected with a pressure pump (14).

5. The fracturing temporary plugging diverting agent temporary plugging performance testing device according to claim 1, characterized in that: The outer surface of the adjusting bolt (5) is provided with an auxiliary bearing (15), and the auxiliary bearing (15) is embedded in the inside of the crack test shell (1).

6. The fracturing temporary plugging diverting agent temporary plugging performance testing device according to claim 1, characterized in that: The back of the crack test shell (1) is fixedly connected with a liquid outlet pipe (17), and the end of the liquid outlet pipe (17) away from the crack test shell (1) is fixedly connected with a liquid outlet container (16).

7. The fracturing temporary plugging diverting agent temporary plugging performance testing device according to claim 1, characterized in that: The left ends of the two positioning rods (7) are fixedly connected with a stop block (18), and the left side of the stop block (18) is fixedly connected with an auxiliary handle (19).

8. The fracturing temporary plugging diverting agent temporary plugging performance testing device according to claim 7, characterized in that: The outer surface of the auxiliary handle (19) is fixedly connected with two firm rings (20), and the right end of each firm ring (20) is fixedly connected with the left side of the stop block (18).

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