Performance evaluation experiment device for anti-channeling and anti-leakage oil well cement fluid loss agent for well cementation

Abstract

The utility model discloses an anti-channeling and anti-leakage oil well cement fluid loss agent performance evaluation experiment device for well cementation, and relates to the technical field of fluid loss agent performance experiments, the anti-channeling and anti-leakage oil well cement fluid loss agent performance evaluation experiment device comprises a container box body and a liquid storage tank fixedly arranged at the top of the container box body, and a liquid inlet pipeline is fixedly arranged at the upper end of one side of the liquid storage tank in a penetrating mode; the other end of the liquid inlet pipeline penetrates into the container box body, a flowmeter is arranged on the pipe wall of the liquid inlet pipeline, a piston with a rectangular horizontal section is arranged in the liquid storage tank in a penetrating mode, a rectangular air port is formed in the lower end of one side of the liquid storage tank, and a cover plate is arranged at the top of the liquid storage tank. And a driving mechanism is arranged on the lower surface of the cover plate. By means of the arranged piston, when fluid needs to be added into the container box body, the fluid can be pushed into the container box body through the liquid inlet pipeline in the mode that the piston is driven to move upwards, the flow can be calculated through the flow meter, and accurate control over the flow of the fluid flowing into the container box body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid loss reducer performance experiments, in particular to a performance evaluation experimental device for an anti-channeling and anti-leakage oil well cement fluid loss reducer used for cementing. Background Art

[0002] Fluid loss reducer is an important additive, and its main function is to reduce the water loss of the medium (such as mud or concrete) and improve the quality and stability of the medium. Specifically, in the oil industry, fluid loss reducer is added to the mud to reduce the water loss of the mud and prevent problems such as well wall instability and oil layer blockage. In the concrete industry, fluid loss reducer can reduce the water loss rate of concrete, increase the viscosity of concrete, and improve the strength and density of concrete, thereby improving construction quality and efficiency.

[0003] After searching, a deep well high-temperature fluid loss agent performance testing device with a publication (announcement) number of CN211426150U was found, which includes a box, a heating system, a measuring device, a transmission cable and a display.

[0004] The above technical solution has the following shortcomings:

[0005] In the above technical solution, the fluid enters the interior of the test device by opening and closing the switch valve. This causes a problem that the process of the fluid entering the test device is a free fall motion, and the flow rate of the required fluid cannot be accurately controlled. Utility Model Content

[0006] In view of the problems existing in the above-mentioned existing experimental devices, the present utility model is proposed.

[0007] Therefore, the utility model aims to provide an experimental device for evaluating the performance of an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing, which solves the problem of being unable to accurately control the flow rate of the fluid to be used.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A performance evaluation experimental device for an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing comprises a container body and a liquid storage tank fixedly arranged on the top of the container body, a liquid inlet pipe is fixedly penetrated through an upper end of one side of the liquid storage tank, the other end of the liquid inlet pipe penetrates into the interior of the container body, a flow meter is arranged on the pipe wall of the liquid inlet pipe, a piston with a rectangular horizontal cross section is penetrated through the interior of the liquid storage tank, a rectangular air port is opened at a lower end of one side of the liquid storage tank, a cover plate is arranged on the top of the liquid storage tank, a driving mechanism is arranged on the lower surface of the cover plate, and the piston is drivingly connected to the driving mechanism.

[0010] The driving mechanism includes a screw rod and a slider. The rod wall at one end of the screw rod is rotatably connected to the lower surface of the cover plate. The rod wall of the screw rod is threadedly sleeved with a slider. The piston is movably sleeved with the slider. The bottom of the piston is provided with an annular plate movably sleeved with the slider. Two limiting mechanisms are symmetrically arranged at the bottom of the annular plate. The side wall of the slider is symmetrically provided with two limiting grooves, and the two limiting grooves are respectively matched with corresponding limiting mechanisms.

[0011] Preferably, the limiting mechanism includes a limiting rod and two fixed plates fixedly arranged at the bottom of the annular plate, the limiting rod is movably inserted into the interior of the two fixed plates and one end is movably inserted into the corresponding limiting groove, the rod wall of the limiting rod is fixedly sleeved with a baffle plate, and a spring movably sleeved with the rod wall of the limiting rod is fixedly connected between the baffle plate and the corresponding fixed plate.

[0012] Preferably, a sealing plate is fixedly sleeved on the side wall of the sliding block, and a bellows movably sleeved on the screw rod is fixedly connected between the sealing plate and the cover plate.

[0013] Preferably, a motor is fixedly arranged on the top of the cover plate, and the upper end of the screw rod passes through the cover plate and is fixedly connected to the output end of the motor.

[0014] Preferably, one end of the limiting rod away from the sliding block is fixedly connected with a pull ring.

[0015] Preferably, a one-way valve is fixedly provided on the upper end of the liquid storage tank on the side away from the liquid inlet pipe, and a liquid adding pipe is fixedly connected through the one-way valve.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] The utility model, through the arranged piston, can push the fluid into the interior of the container body through the liquid inlet pipe by driving the piston to move upward when fluid needs to be added to the interior of the container body, and can calculate the flow rate through the flow meter, thereby realizing accurate control of the flow rate of the fluid flowing into the container body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 A magnified schematic diagram of part A;

[0021] Figure 3 For the utility model Figure 2 An enlarged schematic diagram of part B.

[0022] Description of reference numerals:

[0023] 1. Container body; 2. Liquid storage tank; 3. Liquid inlet pipe; 4. Flow meter; 5. Piston; 6. Cover plate; 7. Screw rod; 8. Slider; 9. Ring plate; 10. Limit rod; 11. Fixed plate; 12. Baffle; 13. Spring; 14. Sealing plate; 15. Bellows; 16. Motor; 17. Pull ring; 18. Liquid adding pipe. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model embodiment discloses an experimental device for evaluating the performance of an anti-channeling and anti-leakage oil well cement fluid loss reducing agent used for cementing.

[0026] The utility model provides Figure 1-3 The performance evaluation experimental device of an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing shown in the figure comprises a container body 1 and a liquid storage tank 2 fixedly arranged on the top of the container body 1, a liquid inlet pipe 3 is fixedly penetrated at the upper end of one side of the liquid storage tank 2, and the other end of the liquid inlet pipe 3 penetrates into the interior of the container body 1, a flow meter 4 is arranged on the pipe wall of the liquid inlet pipe 3, a piston 5 with a rectangular horizontal cross-section is penetrated into the interior of the liquid storage tank 2, a rectangular air port is opened at the lower end of one side of the liquid storage tank 2, a cover plate 6 is arranged on the top of the liquid storage tank 2, a driving mechanism is arranged on the lower surface of the cover plate 6, the piston 5 is transmission-connected with the driving mechanism, and by utilizing the arranged piston 5, when it is necessary to add fluid to the interior of the container body 1, the fluid can be pushed into the interior of the container body 1 through the liquid inlet pipe 3 by driving the piston 5 to move upward, and the flow rate can be calculated by the flow meter 4, thereby realizing precise control of the flow rate of the fluid flowing into the container body 1.

[0027] like Figure 1-3As shown, the driving mechanism includes a screw rod 7 and a slider 8. The rod wall at one end of the screw rod 7 is rotatably connected to the lower surface of the cover plate 6. The rod wall of the screw rod 7 is threadedly sleeved with a slider 8. The piston 5 is movably sleeved with the slider 8. The bottom of the piston 5 is provided with an annular plate 9 movably sleeved with the slider 8. Two limiting mechanisms are symmetrically arranged at the bottom of the annular plate 9. The side wall of the slider 8 is symmetrically provided with two limiting grooves, which are respectively matched with the corresponding limiting mechanisms. By utilizing the threaded sleeve of the screw rod 7 and the slider 8, the slider 8 can be driven to move up and down during the rotation of the screw rod 7, so that when it is necessary to add fluid to the inside of the container box 1, the piston 5 is driven to push the fluid in the liquid storage tank 2 to move upward, so that it is transported to the inside of the container box 1 through the liquid inlet pipe 3.

[0028] like Figure 3 As shown, the limiting mechanism includes a limiting rod 10 and two fixed plates 11 fixedly arranged at the bottom of the annular plate 9. The limiting rod 10 is movably arranged inside the two fixed plates 11 and one end is movably plugged into the corresponding limiting groove. The rod wall of the limiting rod 10 is fixedly sleeved with a baffle 12. A spring 13 movably sleeved with the rod wall of the limiting rod 10 is fixedly connected between the baffle 12 and the corresponding fixed plate 11. The setting of the limiting mechanism can realize the fixed installation of the baffle 12, thereby realizing the blocking of the piston 5, and preventing the slider 8 from separating from the piston 5 during the up and down movement.

[0029] like Figure 2 As shown, a sealing plate 14 is fixedly sleeved on the side wall of the slider 8, and a bellows 15 movably sleeved with the screw rod 7 is fixedly connected between the sealing plate 14 and the cover plate 6. By utilizing the provided sealing plate 14 and the bellows 15, the sleeved position of the piston 5 and the slider 8 can be sealed, thereby preventing liquid from seeping into the bottom of the piston 5.

[0030] like Figure 1 As shown, a motor 16 is fixedly installed on the top of the cover plate 6, and the upper end of the screw rod 7 passes through the cover plate 6 and is fixedly connected to the output end of the motor 16. By utilizing the set motor 16, the screw rod 7 can be driven to rotate during the operation of the motor 16, thereby driving the slider 8 to move in the vertical direction, thereby realizing the adjustment of the height position of the piston 5.

[0031] like Figure 3 As shown, one end of the limit rod 10 away from the slider 8 is fixedly connected with a pull ring 17. The set pull ring 17 can be used to facilitate the movement of the limit rod 10, so that the limit rod 10 can be pulled out from the inside of the corresponding limit groove, thereby realizing the driving of the limit mechanism.

[0032] like Figure 1As shown, a one-way valve is fixedly provided on the upper end of the side of the liquid storage tank 2 away from the liquid inlet pipe 3, and a liquid adding pipe 18 is fixedly connected through the one-way valve. By utilizing the one-way valve and the liquid adding pipe 18, while ensuring that liquid can be added to the liquid storage tank 2, a one-way flow of liquid in the liquid adding pipe 18 is achieved, thereby avoiding backflow in the liquid adding pipe 18 during the upward movement of the piston 5.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An experimental device for evaluating the performance of an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing, comprising a container body (1) and a liquid storage tank (2) fixedly arranged on the top of the container body (1), characterized in that: A liquid inlet pipe (3) is fixedly inserted through the upper end of one side of the liquid storage tank (2), the other end of the liquid inlet pipe (3) penetrates into the interior of the container box (1), a flow meter (4) is arranged on the pipe wall of the liquid inlet pipe (3), a piston (5) with a rectangular horizontal cross section is inserted into the interior of the liquid storage tank (2), a rectangular air port is opened at the lower end of one side of the liquid storage tank (2), a cover plate (6) is arranged on the top of the liquid storage tank (2), a driving mechanism is arranged on the lower surface of the cover plate (6), and the piston (5) is drivingly connected to the driving mechanism.

2. The performance evaluation experimental device for an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing according to claim 1, characterized in that: The driving mechanism comprises a screw rod (7) and a slider (8); a rod wall at one end of the screw rod (7) is rotatably connected to the lower surface of the cover plate (6); a slider (8) is threadedly sleeved on the rod wall of the screw rod (7); the piston (5) is movably sleeved on the slider (8); an annular plate (9) movably sleeved on the slider (8) is provided at the bottom of the piston (5); two limiting mechanisms are symmetrically provided at the bottom of the annular plate (9); two limiting grooves are symmetrically provided on the side wall of the slider (8); the two limiting grooves are respectively matched with corresponding limiting mechanisms.

3. The performance evaluation experimental device of an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing according to claim 2, characterized in that: The limiting mechanism comprises a limiting rod (10) and two fixing plates (11) fixedly arranged at the bottom of the annular plate (9); the limiting rod (10) is movably arranged inside the two fixing plates (11) and one end of the limiting rod is movably plugged into a corresponding limiting groove; a baffle plate (12) is fixedly sleeved on a rod wall of the limiting rod (10); a spring (13) movably sleeved on the rod wall of the limiting rod (10) is fixedly connected between the baffle plate (12) and the corresponding fixing plate (11).

4. The performance evaluation experimental device of an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing according to claim 2, characterized in that: A sealing plate (14) is fixedly sleeved on the side wall of the sliding block (8), and a bellows (15) movably sleeved on the screw rod (7) is fixedly connected between the sealing plate (14) and the cover plate (6).

5. The performance evaluation experimental device for an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing according to claim 2, characterized in that: A motor (16) is fixedly arranged on the top of the cover plate (6), and the upper end of the screw rod (7) passes through the cover plate (6) and is fixedly connected to the output end of the motor (16).

6. The performance evaluation experimental device for an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing according to claim 3, characterized in that: One end of the limiting rod (10) away from the sliding block (8) is fixedly connected to a pull ring (17).

7. The performance evaluation experimental device for an anti-channeling and anti-leakage oil well cement fluid loss reducer for cementing according to claim 1, characterized in that: A one-way valve is fixedly provided on the upper end of the liquid storage tank (2) away from the liquid inlet pipe (3), and a liquid adding pipe (18) is fixedly connected via the one-way valve.

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