CN214622406U - Device for high-temperature and high-pressure core and rock debris soaking test - Google Patents
Device for high-temperature and high-pressure core and rock debris soaking test Download PDFInfo
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- CN214622406U CN214622406U CN202120840639.6U CN202120840639U CN214622406U CN 214622406 U CN214622406 U CN 214622406U CN 202120840639 U CN202120840639 U CN 202120840639U CN 214622406 U CN214622406 U CN 214622406U
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Abstract
The utility model belongs to the technical field of rock core detritus immersion test, more specifically relates to a device for high temperature high pressure rock core detritus immersion test. The device comprises a pressure-bearing container, a container sealing cover which is detachably and hermetically connected with the pressure-bearing container, and a heating device for heating the pressure-bearing container; the container sealing cover is provided with a pressurizing port and a pressure relief port which are communicated with the pressure-bearing container; the container sealing cover is also provided with a pressure gauge for detecting the pressure condition in the pressure-bearing container; the heating device comprises a heating sleeve and a controller, and the pressure-bearing container is placed in the heating sleeve. The utility model provides a pair of a device for high temperature high pressure rock core detritus soak test, the highly compressed operation environment of high temperature is to the influence of rock core detritus in can real simulation pit to measure reliable data, thereby reflect reliable wall of a well stratum and prevent collapsing, inhibit effect.
Description
Technical Field
The utility model belongs to the technical field of rock core detritus immersion test, more specifically relates to a device for high temperature high pressure rock core detritus immersion test.
Background
In the drilling process, a mud shale well section is frequently drilled, and due to the development of mud shale bedding and microcracks, mud rocks are very easy to hydrate, and the requirements on the anti-collapse and inhibition performances of the drilling fluid are high. The existing test methods for evaluating the collapse prevention and inhibition performance of the drilling fluid comprise a shale linear expansion experiment and a rock debris rolling recovery rate experiment. The water absorption and expansion characteristics of the shale are evaluated through a shale linear expansion experiment, the evaluation of the inhibition effect of the drilling fluid treating agent is focused, and the strength of the shale in the well wall stratum after soaking cannot be reflected, for example, patent CN103969283B discloses a device for testing the properties of a rock core under a thermal recovery working condition, the underground operation environment cannot be truly simulated during testing, and the influence of the underground special environment on the properties of the rock core is ignored; the rock debris rolling recovery rate can evaluate the dynamic inhibition effect of the drilling fluid, and meanwhile, the strength of the well wall stratum after the shale is soaked cannot be reflected. At present, in order to visually evaluate the anti-collapse effect of the drilling fluid, many engineers directly select stratum rock cores or rock debris, place the stratum rock cores or rock debris in a container filled with the drilling fluid for soaking, and observe the stratum rock cores or rock debris statically for several days at room temperature and normal pressure to compare the front and back states of the rock cores and rock debris. Although the method can evaluate the inhibition effect of the drilling fluid on the rock core and rock debris to a certain extent, the method cannot reflect the anti-collapse and inhibition effects of the borehole wall stratum under the real underground high-temperature and high-pressure environment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome at least one defect among the above-mentioned prior art, provide a device that is used for high temperature high pressure rock core detritus soaking test, can effectively simulate drilling fluid in the high temperature high pressure environment in the pit to the operation environment of the wall of a well bottom, improve the reliability of data.
In order to solve the technical problem, the utility model discloses a technical scheme is: a device for a high-temperature and high-pressure core and rock debris soaking test comprises a pressure-bearing container, a container sealing cover and a heating device, wherein the container sealing cover is detachably and hermetically connected with the pressure-bearing container; the container sealing cover is provided with a pressurizing port and a pressure relief port which are communicated with the pressure-bearing container; the container sealing cover is also provided with a pressure gauge for detecting the pressure condition in the pressure-bearing container; the heating device comprises a heating sleeve and a controller, and the pressure-bearing container is placed in the heating sleeve. The pressure-bearing container can be pressurized through the pressurizing port, and the pressure relief is realized through the pressure relief port so as to facilitate the opening of the cover; the pressure gauge is used for detecting the pressure in the pressure-bearing container; the heating device is used for heating liquid placed in the pressure-bearing container, adding rock core and rock debris and drilling fluid into the pressure-bearing container, pressurizing and heating the pressure-bearing container, and simulating the environment of a drilling site so as to measure accurate data.
In one embodiment, a pressurizing pipeline is connected to the pressurizing port, and a pressurizing joint is arranged on the pressurizing pipeline; the pressure relief port is connected with a pressure relief pipeline.
In one embodiment, a check valve is provided in the pressurized line. The check valve can prevent liquid in the pressure-bearing container from flowing back and spraying out.
In one embodiment, a valve is arranged on the pressure relief pipeline. The valve is arranged to facilitate air leakage and pressure relief.
In one embodiment, the pressure-bearing container is provided with scale marks for measuring the depth of the solution. The scale marks are convenient for measuring the volume of the liquid filled into the pressure-bearing container, excessive or insufficient addition is avoided, and the measurement accuracy is improved.
In one embodiment, the top of the pressure-bearing container is provided with a plurality of first threaded holes, the container sealing cover is provided with second threaded holes corresponding to the first threaded holes in a one-to-one mode, and the pressure-bearing container is detachably connected with the container sealing cover through bolts. The pressure-bearing container and the container sealing cover are fixedly connected through the bolts, so that the safety performance is high, and the disassembly and the assembly are convenient.
In one embodiment, a high-temperature-resistant and high-pressure-resistant sealing ring is arranged at the joint of the pressure-bearing container and the container sealing cover. The sealing ring can effectively improve the sealing performance of the connection between the pressure-bearing container and the container sealing cover, and avoid air leakage and insufficient pressure.
In one embodiment, a thermometer is arranged in the heating sleeve; a temperature sensor is arranged in the pressure-bearing container. The thermometer is used for measuring the temperature in the heating jacket, and the temperature sensor is used for measuring the temperature in the pressure-bearing container.
In one embodiment, the pressure containing vessel and the closure are constructed of steel. Because the pressure-bearing container needs to be heated and pressurized, the safety performance of the steel material is higher.
In one embodiment, the heating jacket is made of a ceramic material.
Compared with the prior art, the beneficial effects are: the utility model provides a pair of a device for high temperature high pressure rock core detritus soak test, the highly compressed operation environment of high temperature is to the influence of rock core detritus in can real simulation pit to measure reliable data, thereby reflect reliable wall of a well stratum and prevent collapsing, inhibit effect.
Drawings
Fig. 1 is a schematic structural view of a pressure-bearing container and a container cover of the present invention.
Fig. 2 is a schematic structural view of the heating device of the present invention.
Reference numerals: 1. a pressure-bearing vessel; 2. a container closure; 3. a pressure gauge; 4. heating a jacket; 5. a controller; 6. a pressurization line; 7. a pressurized joint; 8. a check valve; 9. a pressure relief line; 10. a valve; 11. a seal ring; 12. scale lines; 13. a thermometer.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
As shown in fig. 1 and 2, the device for the high-temperature and high-pressure core and rock debris soaking test comprises a pressure-bearing container 1, a container cover 2 which is detachably and hermetically connected with the pressure-bearing container 1, and a heating device for heating the pressure-bearing container 1; the container sealing cover 2 is provided with a pressurizing port and a pressure relief port which are communicated with the pressure-bearing container 1; the container sealing cover 2 is also provided with a pressure gauge 3 for detecting the pressure condition in the pressure-bearing container 1; the heating device comprises a heating jacket 4 and a controller 5, and the pressure-bearing container 1 is placed in the heating jacket 4. The pressure-bearing container 1 can be pressurized through the pressurizing port, and the pressure relief is realized through the pressure relief port so as to facilitate the opening of the cover; the pressure gauge 3 is used for detecting the pressure in the pressure-bearing container 1; the heating device is used for heating liquid placed in the pressure-bearing container 1, adding rock core and rock debris and drilling fluid into the pressure-bearing container 1, pressurizing and heating the pressure-bearing container 1, and simulating the environment of a drilling site so as to measure accurate data.
In one embodiment, a pressurizing pipeline 6 is connected to the pressurizing port, and a pressurizing joint 7 is arranged on the pressurizing pipeline 6; the pressure relief port is connected with a pressure relief pipeline 9.
In one embodiment, a check valve 8 is provided in the pressurized line 6. The check valve 8 is arranged to prevent the liquid in the pressure-bearing container 1 from being sprayed out in a backflow mode.
In one embodiment, a valve 10 is provided in the pressure relief line 9. The valve 10 is arranged to facilitate air leakage and pressure relief.
In one embodiment, the pressure-bearing container 1 is provided with scale marks 12 for measuring the depth of the solution. The scale marks 12 are convenient for measuring the volume of the liquid filled into the pressure-bearing container 1, avoid adding too much or too little, and improve the measurement accuracy.
In one embodiment, a plurality of first threaded holes are formed in the top of the pressure-bearing container 1, second threaded holes corresponding to the first threaded holes in position one to one are formed in the container sealing cover 2, and the pressure-bearing container 1 is detachably connected with the container sealing cover 2 through bolts. The pressure-bearing container 1 and the container sealing cover 2 are fixedly connected through bolts, so that the safety performance is high, and the disassembly and the assembly are convenient.
In one embodiment, a high-temperature-resistant and high-pressure-resistant sealing ring 11 is arranged at the joint of the pressure-bearing container 1 and the container cover 2. The sealing ring 11 can effectively improve the sealing performance of the connection between the pressure-bearing container 1 and the container sealing cover 2, and avoid air leakage and pressure insufficiency.
In one embodiment, a thermometer 13 is arranged in the heating jacket 4; a temperature sensor is arranged in the pressure-bearing container 1. A thermometer 13 is used to measure the temperature in the heating jacket 4 and a temperature sensor is used to measure the temperature inside the pressure containing vessel 1.
In one embodiment, the pressure containing vessel 1 and the closure are both constructed of steel. As the pressure-bearing container 1 needs to be heated and pressurized, the safety performance of the steel material is higher.
In one embodiment, the heating jacket 4 is made of a ceramic material. The heating jacket 4 is connected with a power supply and a control panel device, the controller 5 can set a designed heating temperature, the heating jacket 4 is provided with a thermometer 13 for monitoring the temperature of the heating jacket 4, and after the heating jacket 4 is heated to the designed temperature, the heating jacket 4 can realize a heat preservation function.
After the pressure-bearing container 1 is heated to the design temperature and the design pressure, the pressure-bearing container stands still for the design time, the core is taken out through the pressure relief of the gas release pipeline, the strength of the core is measured, or rock debris is taken out to be compared and observed in appearance, other drilling fluid systems are replaced, the operation is repeated, and the collapse prevention performance of different drilling fluid systems can be compared through the strength data of the core.
Examples
Taking 6 rock cores at the same depth of the same well, taking 2 rock cores in the pressure-bearing container 1, pouring clear water to the scale mark 12, sleeving the container sealing cover 2 on the sealing ring 11, then covering the container sealing cover into the pressure-bearing container 1, and tightening the bolt to ensure that the test valve 10 on the gas discharge pipeline is in a closed state.
The method comprises the steps of placing a pressure-bearing container 1 and a container sealing cover 2 which are connected and sealed in a heating sleeve 4, turning on a power supply, setting the temperature to 150 ℃, observing that the heating sleeve 4 is heated to 150 ℃ through a thermometer 13, connecting an external air source with a pressure interface on a pressurizing pipeline 6, pressurizing the pressure-bearing container 1, observing a pressure gauge 3, gradually pressurizing to 20MPa, slowly opening a valve 10 on an air relief pipeline for pressure relief after the temperature is kept static for 1d, taking out 2 rock cores after the pressure is relieved, cleaning the pressure-bearing container 1 and the container sealing cover 2, carrying out rock mechanics experiments on the taken out rock cores, and recording experimental results.
And then 2 cores are taken and placed in the pressure-bearing container 1 which is cleaned completely, the first drilling fluid is poured to the position of the scale mark 12, the operations are repeated, the cores which are taken out are subjected to rock mechanics experiments, and the experimental results are recorded.
And (3) placing the remaining 2 rock cores in a pressure-bearing container 1 which is cleaned completely, pouring the first drilling fluid to the position of the scale mark 12, repeating the operation, taking out the rock cores, performing a rock mechanics experiment, and recording the experiment result.
The three groups of experimental results are shown in the following table 1, and it can be seen that the compressive strength of the core soaked in the second drilling fluid is higher than that of the rest drilling fluid systems, which indicates that the anti-collapse effect of the second drilling fluid is better.
Table 1: test result of compressive strength of rock core soaked in different drilling fluid systems
| Core numbering | Drilling fluid system | Compressive strength (MPa) |
| 1 | Clean water | 2.5 |
| 2 | Clean water | 1.4 |
| 3 | Drilling fluid 1 | 5.6 |
| 4 | Drilling fluid 1 | 7.9 |
| 5 | |
15.5 |
| 6 | |
18.4 |
The utility model provides a pair of a device for high temperature high pressure rock core detritus soak test, the highly compressed operation environment of high temperature is to the influence of rock core detritus in can real simulation pit to measure reliable data, thereby reflect reliable wall of a well stratum and prevent collapsing, inhibit effect.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The device for the high-temperature and high-pressure core and rock debris soaking test is characterized by comprising a pressure-bearing container (1), a container sealing cover (2) which is detachably and hermetically connected with the pressure-bearing container (1), and a heating device for heating the pressure-bearing container (1); the container sealing cover (2) is provided with a pressurizing port and a pressure relief port which are communicated with the pressure-bearing container (1); the container sealing cover (2) is also provided with a pressure gauge (3) for detecting the pressure condition in the pressure-bearing container (1); the heating device comprises a heating sleeve (4) and a controller (5), and the pressure-bearing container (1) is placed in the heating sleeve (4).
2. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 1, wherein a pressurizing pipeline (6) is connected to the pressurizing port, and a pressurizing joint (7) is arranged on the pressurizing pipeline (6); the pressure relief port is connected with a pressure relief pipeline (9).
3. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 2, wherein a check valve (8) is arranged on the pressurizing pipeline (6).
4. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 3, wherein a valve (10) is arranged on the pressure relief pipeline (9).
5. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 4, wherein the pressure-bearing container (1) is provided with scale marks (12) for measuring the depth of the solution.
6. The device for the high-temperature and high-pressure core and rock debris soaking test according to any one of claims 1 to 5, wherein a plurality of first threaded holes are formed in the top of the pressure-bearing container (1), second threaded holes corresponding to the first threaded holes in one-to-one mode are formed in the container sealing cover (2), and the pressure-bearing container (1) and the container sealing cover (2) are detachably connected through bolts.
7. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 6, wherein a high-temperature and high-pressure resistant sealing ring (11) is arranged at the joint of the pressure-bearing container (1) and the container sealing cover (2).
8. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 7, wherein a thermometer (13) is arranged in the heating jacket (4); a temperature sensor is arranged in the pressure-bearing container (1).
9. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 7, wherein the pressure-bearing container (1) and the sealing cover are both made of steel materials.
10. The device for the high-temperature and high-pressure core and rock debris soaking test according to claim 9, wherein the heating jacket (4) is made of ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120840639.6U CN214622406U (en) | 2021-04-22 | 2021-04-22 | Device for high-temperature and high-pressure core and rock debris soaking test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120840639.6U CN214622406U (en) | 2021-04-22 | 2021-04-22 | Device for high-temperature and high-pressure core and rock debris soaking test |
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| Publication Number | Publication Date |
|---|---|
| CN214622406U true CN214622406U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120840639.6U Active CN214622406U (en) | 2021-04-22 | 2021-04-22 | Device for high-temperature and high-pressure core and rock debris soaking test |
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| CN (1) | CN214622406U (en) |
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