CN211401978U - Device for testing stress strain of cement stone under high-temperature condition - Google Patents
Device for testing stress strain of cement stone under high-temperature condition Download PDFInfo
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- CN211401978U CN211401978U CN201921940878.8U CN201921940878U CN211401978U CN 211401978 U CN211401978 U CN 211401978U CN 201921940878 U CN201921940878 U CN 201921940878U CN 211401978 U CN211401978 U CN 211401978U
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Abstract
The utility model relates to an oil drilling and production engineering well cementation technical field discloses a device of cement stone stress strain under test high temperature condition, through hydraulic press, temperature control box and computer control system's combination, for the experimental condition that test research provided 0-200 degrees centigrade, the change law of mechanics performance and calorifics performance of simulation research cement stone under stratum high temperature condition provides technical support for studying the sealed failure mechanism of well cementation cement stone.
Description
Technical Field
The utility model belongs to the technical field of the oil drilling and production engineering well cementation, concretely relates to cement stone stress strain's device under test high temperature condition.
Background
In recent years, with the continuous deepening of the exploration and development process of the oil and gas field, thickened oil resources draw attention at home and abroad gradually, the thickened oil resources are rich in China, and the development of the thickened oil resources puts higher requirements on the performance of the set cement, namely the set cement can still keep integrity and durability under the high-temperature condition; the traditional method for evaluating the performance of the cement stone cannot comprehensively reflect the change of the performance of the cement stone at high temperature, so that the research on the mechanical property and the thermal property of the well cementation cement stone has important guiding significance on the exploitation and the service life of a heavy oil well.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a device of cement stone stress strain under test high temperature condition to the mechanical properties and the calorifics performance of well cementation cement stone under the test high temperature condition, thereby obtain the relevant experimental data of stress strain.
In order to achieve the above purpose, the utility model provides a technical scheme as follows:
a device for testing stress strain of cement stones under a high-temperature condition comprises a hydraulic press base and is characterized in that a temperature control box capable of adjusting temperature is arranged at the top of the hydraulic press base, a box door is arranged on the wall surface of one side of the temperature control box, two opposite side surfaces of the temperature control box are horizontally provided with two mold release rods penetrating through box walls, the mold release rods are in threaded connection with screw holes formed in the box walls of the temperature control box through threads, cement stone molds are arranged inside the temperature control box, the two mold release rods are respectively connected with the cement stone molds, and a hydraulic press support is arranged below the cement stone molds; the hydraulic press is characterized in that a circular opening is formed in the center of the upper wall surface of the temperature control box, a hydraulic press support is vertically arranged in the middle of the circular opening, and the hydraulic press further comprises a computer control system, wherein the signal output end of the computer control system is connected with the signal input ends of the temperature control box and the hydraulic press support respectively.
Preferably, the circular opening is circumferentially provided with a heat-insulating sealing ring which is in interference fit with the circular opening and the hydraulic press support respectively.
Preferably, the cement stone mold is a cube.
The method for testing the stress strain of the cement pattern under the high-temperature condition is characterized by comprising the following steps of:
step one, preparing cement paste according to a cement paste formula of a research block;
coating butter on the inner surface of a cement stone mold, injecting the prepared cement paste into the cement stone mold after the cement stone mold is assembled, and setting the corresponding curing temperature in the temperature control box through a computer control system;
thirdly, after the cement paste is solidified into cement stones, rotating the mould stripping rod to separate the cement mould from the cement stones, and enabling the cement stones to fall on the hydraulic press strut;
and step four, controlling the test temperature in the temperature control box through a computer control system, controlling the hydraulic machine support to apply axial pressure to the set cement, and simultaneously collecting relevant test data.
Preferably, in the second step and the fourth step, the temperature control range of the temperature control box is 0-200 ℃.
The utility model discloses beneficial effect who has:
the utility model provides a device of cement stone stress strain under test high temperature condition, hydraulic press, temperature control box and computer system's combination can simulate the maintenance environment of cement stone under the temperature range 0-200 ℃ condition to can test its stress strain change law under the high temperature, provide technical support for the mechanics and the calorifics performance of research cement stone.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the testing device of the present invention;
FIG. 2 is a schematic vertical cross-sectional view of the testing device of the present invention;
FIG. 3 is a flow chart of a test method;
in the figure: the hydraulic press comprises a hydraulic press base 1, a hydraulic press support 1.1, a hydraulic press support 1.2, a temperature control box 2, a box door 2.1, a mould stripping rod 2.2, a thread 2.3, a cement stone mould 2.4, a circular opening 2.5, a heat-insulating sealing ring 2.6 and a computer control system 3.
Detailed Description
Examples
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
As shown in figure 1 and figure 2, the device of the utility model is provided with a temperature control box 2 in the center of the upper surface of a hydraulic press base 1, a hydraulic press support 1.2 and the temperature control box 2 are connected with a computer control system 3 for controlling the environmental conditions required by the experiment, the experiment temperature is controlled between 0 ℃ and 200 ℃, a square-shaped cement stone mould 2.4 is arranged in the temperature control box 2 for forming a cement stone sample, a box door 2.1 is arranged on one side wall surface of the temperature control box 2, cement slurry can be injected into the cement stone mould 2.4 through the box door 2.1, a hydraulic press support 1.1 is arranged below the cement stone mould 2.4 for placing the experimental cement stone sample, the cement stone is connected with a mould release rod 2.2, the cement stone sample can be separated from the cement stone mould 2.4 by operating the mould release rod 2.2 outside the temperature control box 2, the center of the upper wall of the temperature control box is provided with a round opening 2.5, the round opening 2 is used for the support 1.2 to apply pressure to the cement, a heat preservation sealing ring 2.6 is arranged between the circular opening 2.5 and the hydraulic machine support 1.2, so that the accuracy of the experimental temperature can be kept.
As shown in fig. 3, experiments were conducted by first configuring a test slurry according to the slurry formulation used in the block under study, then, coating butter on the inner surface of the cement stone mould 2.4, assembling the cement stone mould 2.4, injecting the prepared cement paste into the cement stone mould 2.4 through a box door 2.1 at one side of the temperature control box 2, closing the box door, setting corresponding curing temperature in the range of 0-200 deg.c in the computer control system 3, curing cement slurry, the mould stripping rod 2.2 is rotated to separate the mould stripping rod 2.2 from the cement sample, the cement sample falls on the hydraulic machine support 1.1, the corresponding experimental test temperature is controlled by the computer control system 3, the hydraulic machine support 1.2 is controlled to move downwards, axial pressure is applied to the set cement on the hydraulic press strut 1.1, relevant experiments of relevant mechanical properties and thermal properties are carried out, and relevant data obtained by the experiments are collected through the computer system 3.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. A device for testing stress strain of cement stones under a high-temperature condition comprises a hydraulic machine base (1) and is characterized in that a temperature control box (2) capable of adjusting temperature is arranged at the top of the hydraulic machine base (1), a box door (2.1) is arranged on one side wall surface of the temperature control box (2), two opposite side surfaces of the temperature control box (2) are horizontally provided with two mould release rods (2.2) penetrating through box walls, the mould release rods (2.2) are in threaded connection with screw holes formed in the box walls of the temperature control box (2) through threads (2.3), a cement stone mould (2.4) is arranged inside the temperature control box (2), the two mould release rods (2.2) are respectively connected with the cement stone mould (2.4), and a hydraulic machine support (1.1) is arranged below the cement stone mould (2.4); the hydraulic press is characterized in that a circular opening (2.5) is formed in the center of the upper wall face of the temperature control box (2), a vertically arranged hydraulic press support (1.2) is arranged in the middle of the circular opening (2.5), and the hydraulic press further comprises a computer control system (3) of which the signal output end is connected with the signal input ends of the temperature control box (2) and the hydraulic press support (1.2) respectively.
2. The device for testing the stress strain of the cement stones under the high-temperature condition according to claim 1, wherein the circular opening (2.5) is circumferentially provided with a heat-insulating sealing ring (2.6) which is in interference fit with the circular opening (2.5) and the hydraulic machine support (1.2) respectively.
3. The apparatus for testing stress-strain of cement stone under high temperature condition as claimed in claim 2, wherein the cement stone mold (2.4) is a cube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921940878.8U CN211401978U (en) | 2019-11-12 | 2019-11-12 | Device for testing stress strain of cement stone under high-temperature condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921940878.8U CN211401978U (en) | 2019-11-12 | 2019-11-12 | Device for testing stress strain of cement stone under high-temperature condition |
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| CN211401978U true CN211401978U (en) | 2020-09-01 |
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| CN201921940878.8U Active CN211401978U (en) | 2019-11-12 | 2019-11-12 | Device for testing stress strain of cement stone under high-temperature condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033820A (en) * | 2019-11-12 | 2020-12-04 | 长江大学 | Device and method for testing stress strain of cement stone under high-temperature condition |
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2019
- 2019-11-12 CN CN201921940878.8U patent/CN211401978U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033820A (en) * | 2019-11-12 | 2020-12-04 | 长江大学 | Device and method for testing stress strain of cement stone under high-temperature condition |
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