Experimental device for evaluating performance of composite lightening agent for well cementation
By designing the performance evaluation experimental device for cementing composite lighter agents and using the knock block and driving mechanism to knock the cement block, the problem of inability to effectively evaluate the performance of composite lighter agents in the prior art is solved, and the accurate evaluation of the performance of composite lighter agents is achieved to ensure the improvement of cementing effect.
Patent Information
- Application Number
- CN202421609753.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing cementing methods cannot effectively evaluate their performance before using composite mitigators, resulting in inconsistent strength of cement blocks made of composite mitigators of different performances, affecting the cementing effect.
An experimental device for performance evaluation of composite lighter agents for cementing was designed. By adding composite lighter agents and not adding composite lighter agents to the two cement blocks, the cement blocks were knocked by using the knock blocks and driving mechanisms to observe their strength changes to evaluate the performance of composite lighter agents.
Through the use of this device, the performance of the composite mitigator can be effectively evaluated, ensuring that cement blocks of appropriate strength are used during the cementing process, thereby improving the stability and effectiveness of the cementing.
Smart Images
Figure CN222952139U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of composite lightening agent performance evaluation, in particular to a composite lightening agent performance evaluation experimental device for cementing. Background Art
[0002] There are many types of oil and gas fields in my country, including low-pressure permeability oil and gas fields, heavy oil oil and gas fields, etc. Most of these oil and gas fields have low oil layer pressure coefficients. Some of them will leak during drilling due to reduced oil well pressure due to long-term exploitation. Sometimes cementing leakage occurs due to long-term sealing. Therefore, it is necessary to protect the oil and gas layers and cement the wells.
[0003] The existing cementing method usually adds composite lighteners to cement slurry, and then reinforces the oil well through special cementing methods such as graded cementing. However, the strength of cement blocks solidified by cement slurry made of composite lighteners with different properties is different, so the performance of the composite lightener needs to be evaluated before use. Utility Model Content
[0004] In view of the problems existing in the existing composite lightening agent for cementing, the utility model is proposed.
[0005] Therefore, the purpose of the utility model is to provide a composite lightening agent performance evaluation experimental device for cementing, which solves the problem that the strength of cement blocks solidified by cement slurry made of composite lightening agents with different performances are all different, so the performance of the composite lightening agent needs to be evaluated before use.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A performance evaluation experimental device for a composite lightening agent for cementing comprises a base, two cement blocks are placed on the upper surface of the base, a clamping mechanism is provided on both sides of the two cement blocks, the two cement blocks are fixed by the clamping mechanism, a U-shaped plate is fixedly connected to the upper surface of the base, two through holes are provided on the upper surface of the U-shaped plate, connecting rods are slidably provided inside the two through holes, the lower ends of the two connecting rods are fixedly connected to striking blocks, the two striking blocks are matched with corresponding cement blocks respectively, the upper ends of the two connecting rods are provided with a driving mechanism, and the two striking blocks are moved by the driving mechanism.
[0008] Preferably, the clamping mechanism includes multiple mounting plates, two bidirectional screw rods, multiple sliding bars and multiple clamping plates, each of the mounting plates is fixedly connected to the lower surface of the base, the two bidirectional screw rods are respectively rotatably connected between the corresponding two mounting plates, each of the sliding bars is respectively threadedly sleeved on the rod walls at both ends of the corresponding bidirectional screw rod, the upper end of each sliding bar passes through the lower surface of the base, and each of the clamping plates is respectively fixedly connected to the upper surface of the corresponding sliding bar.
[0009] Preferably, the driving mechanism includes a support plate, a first motor, an eccentric wheel, a pressing plate and two springs, the support plate is fixedly connected to the upper surface of the U-shaped plate, the first motor is fixedly connected to one side of the support plate, the output end of the first motor passes through one side of the support plate, the eccentric wheel is fixedly sleeved on the output end of the first motor, the pressing plate is fixedly connected to the upper ends of two connecting rods and matches the eccentric wheel, and the two springs are respectively slidably sleeved on the outer surfaces of the corresponding connecting rods.
[0010] Preferably, a second motor is fixedly connected between the two mounting plates, and one end of the two bidirectional screw rods respectively penetrates one side of the corresponding mounting plate and is fixedly connected to the two output ends of the second motor respectively.
[0011] Preferably, two strip-shaped holes are provided on the upper surface of the base, and the two strip-shaped holes are matched with two corresponding slide bars respectively.
[0012] Preferably, a plurality of support seats are symmetrically fixedly connected to the lower surface of the base.
[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0014] 1. The utility model adds a composite lightening agent to one of the cement blocks as an experimental group, and does not add the composite lightening agent to the other cement block as a reference group. Then, the two cement blocks can be struck by two striking blocks. By observing the conditions of the two cement blocks after long-term striking, the performance of the composite lightening agent can be known.
[0015] 2. The utility model starts the first motor to make the eccentric wheel rotate, and then the eccentric wheel can squeeze the squeezing plate and make it move downward, and then the squeezing plate can be moved up and down by two springs, and then the reciprocating motion of the squeezing plate can be made, so that the two striking blocks can move up and down and repeatedly strike the cement block. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] 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.
[0017] Figure 1 It is a structural schematic diagram of the utility model;
[0018] Figure 2 For the utility model Figure 1 A cross-sectional view of
[0019] Figure 3 For the utility model Figure 1 Side view of.
[0020] Description of reference numerals:
[0021] 1. Base; 2. Cement block; 3. U-shaped plate; 4. Connecting rod; 5. Beating block; 6. Mounting plate; 7. Bidirectional screw rod; 8. Slide bar; 9. Clamp plate; 10. Support plate; 11. First motor; 12. Eccentric wheel; 13. Pressing plate; 14. Spring; 15. Second motor; 16. Support seat. DETAILED DESCRIPTION
[0022] 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.
[0023] The utility model embodiment discloses a performance evaluation experimental device for a composite lightening agent for cementing.
[0024] The utility model provides Figure 1-3 The performance evaluation experimental device of a composite lightening agent for cementing shown in the figure includes a base 1, two cement blocks 2 are placed on the upper surface of the base 1, and a clamping mechanism is commonly provided on both sides of the two cement blocks 2, and the two cement blocks 2 are fixed by the clamping mechanism, and a U-shaped plate 3 is fixedly connected to the upper surface of the base 1, and two through holes are provided on the upper surface of the U-shaped plate 3, and connecting rods 4 are slidably provided inside the two through holes, and the lower ends of the two connecting rods 4 are fixedly connected with knocking blocks 5, and the two knocking blocks 5 are respectively matched with the corresponding cement blocks 2, and the upper ends of the two connecting rods 4 are provided with driving mechanisms, and the two knocking blocks 5 are moved by the driving mechanism.
[0025] One of the two cement blocks 2 is added with a composite lightening agent as an experimental group, and the other is not added with a composite lightening agent as a reference group. The two cement blocks 2 can then be fixed by a clamping mechanism, and then the two cement blocks 2 can be knocked by two knocking blocks 5. By observing the conditions of the two cement blocks 2 after long-term knocking, the performance of the composite lightening agent can be known.
[0026] In order to fix the two cement blocks 2, Figure 1-2As shown, the clamping mechanism includes a plurality of mounting plates 6, two bidirectional screw rods 7, a plurality of slide bars 8 and a plurality of clamping plates 9, each mounting plate 6 is fixedly connected to the lower surface of the base 1, the two bidirectional screw rods 7 are respectively rotatably connected between the corresponding two mounting plates 6, each slide bar 8 is respectively threadedly sleeved on the rod wall at both ends of the corresponding bidirectional screw rod 7, the upper end of each slide bar 8 passes through the lower surface of the base 1, and each clamping plate 9 is respectively fixedly connected to the upper surface of the corresponding slide bar 8, wherein a second motor 15 is commonly and fixedly connected between the two mounting plates 6, one end of the two bidirectional screw rods 7 respectively passes through one side of the corresponding mounting plate 6 and is respectively fixedly connected to the two output ends of the second motor 15.
[0027] Start the second motor 15, which is a dual-axis motor, so it can drive the two bidirectional screw rods 7 to rotate at the same time, and then the two slide bars 8 can respectively drive the corresponding clamping plates 9 to clamp the corresponding cement block 2, so that the cement block 2 can be fixed.
[0028] And in order to make two knocking blocks 5 can knock cement block 2 repeatedly, as Figure 1-3 As shown, the driving mechanism includes a support plate 10, a first motor 11, an eccentric wheel 12, a pressing plate 13 and two springs 14. The support plate 10 is fixedly connected to the upper surface of the U-shaped plate 3, the first motor 11 is fixedly connected to one side of the support plate 10, the output end of the first motor 11 passes through one side of the support plate 10, the eccentric wheel 12 is fixedly sleeved on the output end of the first motor 11, the pressing plate 13 is fixedly connected to the upper ends of the two connecting rods 4 and matches the eccentric wheel 12, and the two springs 14 are respectively slidably sleeved on the outer surfaces of the corresponding connecting rods 4.
[0029] Start the first motor 11 to make the eccentric wheel 12 rotate, and then the eccentric wheel 12 can squeeze the squeezing plate 13 and move it downward, and then the squeezing plate 13 can be moved up by two springs 14. From then on, the squeezing plate 13 can reciprocate up and down, so that the two striking blocks 5 can move up and down and repeatedly strike the cement block 2.
[0030] In order to facilitate the movement of each slider 8, Figure 2 As shown, the upper surface of the base 1 is provided with two strip-shaped holes, and the two strip-shaped holes are matched with the corresponding two slide bars 8 respectively.
[0031] The two bar-shaped holes can facilitate the movement of the two corresponding slide bars 8 .
[0032] Finally, in order to make the device stable, Figure 1-2 As shown, a plurality of support seats 16 are symmetrically fixedly connected to the lower surface of the base 1 .
[0033] Each supporting base 16 can be used to stabilize the device during operation.
[0034] 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. A composite lightening agent performance evaluation experimental device for cementing, comprising a base (1), characterized in that: Two cement blocks (2) are placed on the upper surface of the base (1), and clamping mechanisms are provided on both sides of the two cement blocks (2). The two cement blocks (2) are fixed by the clamping mechanisms. A U-shaped plate (3) is fixedly connected to the upper surface of the base (1), and two through holes are provided on the upper surface of the U-shaped plate (3). Connecting rods (4) are slidably provided inside the two through holes. The lower ends of the two connecting rods (4) are fixedly connected to striking blocks (5). The two striking blocks (5) are matched with corresponding cement blocks (2) respectively. The upper ends of the two connecting rods (4) are provided with driving mechanisms, and the two striking blocks (5) are moved by the driving mechanisms.
2. The performance evaluation experimental device for composite lightening agent for cementing according to claim 1 is characterized in that: The clamping mechanism comprises a plurality of mounting plates (6), two bidirectional screw rods (7), a plurality of slide bars (8) and a plurality of clamping plates (9); each of the mounting plates (6) is fixedly connected to the lower surface of the base (1); the two bidirectional screw rods (7) are respectively rotatably connected between the corresponding two mounting plates (6); each of the slide bars (8) is respectively threadedly sleeved on the rod wall at both ends of the corresponding bidirectional screw rod (7); the upper end of each of the slide bars (8) passes through the lower surface of the base (1); and each of the clamping plates (9) is respectively fixedly connected to the upper surface of the corresponding slide bar (8).
3. The performance evaluation experimental device of the composite lightening agent for cementing according to claim 1 is characterized in that: The driving mechanism comprises a support plate (10), a first motor (11), an eccentric wheel (12), a pressing plate (13) and two springs (14); the support plate (10) is fixedly connected to the upper surface of the U-shaped plate (3); the first motor (11) is fixedly connected to one side of the support plate (10); the output end of the first motor (11) passes through one side of the support plate (10); the eccentric wheel (12) is fixedly sleeved on the output end of the first motor (11); the pressing plate (13) is fixedly connected to the upper ends of the two connecting rods (4) and matches the eccentric wheel (12); and the two springs (14) are respectively slidably sleeved on the outer surfaces of the corresponding connecting rods (4).
4. The performance evaluation experimental device of the composite lightening agent for cementing according to claim 2 is characterized in that: A second motor (15) is fixedly connected between the two mounting plates (6), and one end of the two bidirectional screw rods (7) respectively penetrates one side of the corresponding mounting plate (6) and is fixedly connected to the two output ends of the second motor (15).
5. The performance evaluation experimental device for composite lightening agent for cementing according to claim 1 is characterized in that: The upper surface of the base (1) is provided with two strip-shaped holes, and the two strip-shaped holes are matched with two corresponding slide bars (8) respectively.
6. The performance evaluation experimental device of the composite lightening agent for cementing according to claim 1 is characterized in that: A plurality of support seats (16) are symmetrically and fixedly connected to the lower surface of the base (1).