CN113155388A - Salt rock gas reservoir takes intermediate layer chamber wall vibrations deformation simulation experiment device under fault effect - Google Patents
Salt rock gas reservoir takes intermediate layer chamber wall vibrations deformation simulation experiment device under fault effect Download PDFInfo
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- CN113155388A CN113155388A CN202110451302.0A CN202110451302A CN113155388A CN 113155388 A CN113155388 A CN 113155388A CN 202110451302 A CN202110451302 A CN 202110451302A CN 113155388 A CN113155388 A CN 113155388A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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Abstract
The invention relates to the technical field of a rock salt gas storage, in particular to a rock salt gas storage with an interlayer cavity wall vibration deformation simulation experiment device under the action of a fault, which comprises vibration equipment for providing a vibration source, a box body arranged on the vibration equipment and a strain gauge connected with external detection equipment, wherein a hermetically arranged cavity is arranged in the box body, a rock sample with a gas storage and a rock coil test block under the fault are arranged in the cavity, a gas injection pipe communicated with the gas storage in the rock sample is arranged on the box body, the strain gauge is arranged on the rock sample, a gap is formed between the cavity and the rock sample and the rock coil test block under the fault, when the rock salt gas storage with the interlayer cavity wall vibration deformation simulation experiment device is used, gas is injected into the rock sample gas storage through the gas injection pipe, the box body is driven by the vibration equipment to vibrate, the rock sample and the rock coil test block under the fault are enabled to displace and mutually extrude in the cavity wall, and the rock salt gas storage with the fault under the action can be simulated, and an experimental basis is provided for the cavity wall damage degree by recording the parameters of the strain gauge.
Description
Technical Field
The invention relates to the technical field of salt rock gas reservoirs, in particular to a salt rock gas reservoir with an interlayer cavity wall vibration deformation simulation experiment device under the action of a fault.
Background
The underground salt rock gas storage is one of the main ways of energy storage, has the characteristics of large monomer volume, wide buried depth distribution, complex geological conditions and the like, and the capacity and scale of the gas storage are urgently required to be increased in the increase of the consumption of natural gas in China. However, the rock salt resources of china are mainly distributed in the graben zone or half basin, and there are usually many tectonic fracture zones. The safety of the caverns faces a serious challenge near the faults near the underground salt rock reservoirs. And the salt rock reservoir built or under construction in China is mainly located in an earthquake-resistant defense area, and the layered salt rock reservoir can be subjected to strong earthquake action during the construction and operation. Meanwhile, the gas stored in the salt cavern has the characteristics of high pressure, flammability and explosiveness, and once the wall of the salt rock gas storage reservoir is damaged, the gas can be leaked to cause serious secondary disasters such as fire and explosion.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that the layered rock salt reservoir suffers from strong earthquake action during construction and operation, gas stored in salt caverns has the characteristics of high pressure, flammability and explosiveness, and once the wall of the rock salt reservoir is damaged, the gas is leaked to cause serious secondary disasters such as fire and explosion, the device for simulating the earthquake deformation of the interlayer wall of the rock salt reservoir under the action of faults is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a salt rock gas holder takes intermediate layer chamber wall vibrations deformation simulation experiment device under fault effect, including the vibrating device who provides the vibration source, set up box on vibrating device and the foil gage of being connected with external detection equipment, the sealed cavity that sets up has in the box, be provided with the fault footwall test block in the cavity and have the rock specimen of gas storage storehouse, be provided with on the box with the gas injection pipe of gas storage storehouse intercommunication in the rock specimen, the foil gage sets up on the rock specimen, have the clearance between both and the cavity of rock specimen and fault footwall test block, work as when vibrating device provides the vibration source, displacement and mutual extrusion in the cavity between fault footwall test block and the rock specimen pass through simultaneously deformation when the foil gage detects the rock specimen vibration.
According to the invention, gas is injected into the gas storage of the rock sample through the gas injection pipe, the box body is driven to vibrate by the vibration equipment, and the rock sample and the fault lower disk test block are displaced and mutually extruded in the cavity, so that the vibration condition of the wall of the fault cavity of the salt rock gas storage can be simulated under the action of the fault, and the experimental basis is provided for the damage degree of the cavity wall by recording the parameters of the strain gauge.
In order to enable the rock sample and the fault lower tray test block to vibrate and better displace and extrude in the cavity, furthermore, a plurality of balls are arranged on the inner peripheral wall of the inner cavity of the box body. Through set up the ball on the internal perisporium at the cavity, be rolling friction between ball and rock specimen and the lower wall test block of fault, so better make rock specimen and fault lower wall test block displacement in the box.
Further, a fault upper tray top cover and a fault lower tray top cover are arranged in the cavity, the fault upper tray top cover is located above the rock sample, and the fault lower tray top cover is located above the fault lower tray test block.
For better make the extrusion between rock specimen and the fault lower wall test block, further, be provided with first spring between fault lower wall top cap and the fault lower wall test block, be provided with the second spring between fault lower wall test block and the cavity, first spring and second spring set up the both sides at fault lower wall test block relatively. Through set up first spring and second spring relatively in the both sides of fault lower wall test block, make the fault lower wall test block bigger displacement space in the box like this, the extrusion between the rock specimen of just also better messenger and fault lower wall test block.
Further, a rubber gasket is arranged between the top cover of the upper disc of the fault and the rock sample.
Further, the gas injection pipe includes outer hard tube and interior hose, outer hard tube sets up outside the box, interior hose setting is in the cavity and between the disc top cap on the fault, communicate between the one end of outer hard tube and the interior hose, the other end of interior hose and the gas storage storehouse intercommunication of rock specimen. The combination of the outer hard tube and the inner hose ensures that the gas injection tube does not break when vibrated.
Further, the rock sample includes a quarter cavity wall block, a three-quarter cavity wall block, and a see-through disposed between the quarter cavity wall block and the three-quarter cavity wall block. The operation condition of the salt rock gas storage shouting interlayer cavity is simulated through the quarter cavity wall rock block, the three-quarter cavity wall rock block and the perspective piece when the interlayer cavity is subjected to vibration and fault activity.
In order to better detect the interlayer cavity of the rock salt gas storage, the strain gauges are further arranged between the quarter cavity wall rock block and the perspective piece and between the three quarter cavity wall rock block and the perspective piece. Between the quarter cavity wall rock and the three-quarter cavity wall rock, better experimental data are provided for the cavity wall damage experiment through the parameters of the strain force.
Further, a reinforcing column is arranged on the inner peripheral wall of the cavity. The reinforcing column is used for ensuring the stable and reliable structure of the box body.
Further, a pressure gauge, a flow meter and a valve are arranged on the gas injection pipe.
The invention has the beneficial effects that: when the salt rock reservoir interlayer cavity wall vibration deformation simulation experiment device under the fault action is used, gas is injected into a reservoir of a rock sample through the gas injection pipe, the box body is driven by the vibration device to vibrate, the rock sample and a fault lower disk test block are enabled to displace and mutually extrude in the cavity, the vibration condition of the salt rock reservoir with the fault cavity wall under the fault action can be simulated, an experiment basis is provided for the cavity wall damage degree through recording strain gauge parameters, the phenomenon that the layered salt rock reservoir is subjected to strong earthquake action during construction and operation is avoided, the gas stored in a salt cavern has the characteristics of high pressure, flammability and explosiveness, and once the salt rock reservoir cavity wall is damaged, the gas can be leaked, and the problems of serious secondary disasters such as fire disasters and explosions are caused.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic representation of the structure of a rock sample according to the invention;
fig. 5 is a schematic view of the internal structure of the case of the present invention.
In the figure: 1. the device comprises a vibrating device, 2, a box body, 201, a cavity, 3, a strain gauge, 4, a fault lower disk test block, 5, a rock sample, 501, a quarter cavity wall rock block, 502, a three-quarter cavity wall rock block, 503, a perspective piece, 6, a ball, 7, a fault upper disk top cover, 8, a fault lower disk top cover, 9, a first spring, 10, a second spring, 11, a rubber gasket, 12, an outer hard tube, 13, an inner hose, 14, a reinforcing column, 15, a pressure gauge, 16, a flowmeter, 17, a valve, 18 and a gas injection tube.
Detailed Description
The invention is described in more detail below with reference to the following examples:
the present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1-5, a salt rock gas reservoir takes intermediate layer chamber wall vibrations deformation simulation experiment device under fault effect, including vibrating device 1, the box 2 of setting on vibrating device 1 and the foil gage 3 of being connected with external detection equipment that provides the vibration source, cavity 201 that has sealed setting in the box 2, be provided with the fault tray test block 4 and the rock specimen 5 that has the gas reservoir in the cavity 201, be provided with the gas injection pipe 18 with the gas reservoir intercommunication in the rock specimen 5 on the box 2, foil gage 3 sets up on rock specimen 5, have the clearance between rock specimen 5 and the fault tray test block 4 and the cavity 201, work as when vibrating device 1 provides the vibration source, displacement and mutual extrusion in cavity 201 between fault tray test block 4 and the rock specimen 5, pass through deformation when foil gage 3 detects the vibration of rock specimen 5.
The box body 2 is provided with a plurality of balls 6 on the inner peripheral wall of the inner cavity.
A fault upper tray top cover 7 and a fault lower tray top cover 8 are arranged in the cavity 201, the fault upper tray top cover 7 is located above the rock sample 5, and the fault lower tray top cover 8 is located above the fault lower tray test block 4.
A first spring 9 is arranged between the fault lower tray top cover 8 and the fault lower tray test block 4, a second spring 10 is arranged between the fault lower tray test block 4 and the cavity 201, and the first spring 9 and the second spring 10 are oppositely arranged on two sides of the fault lower tray test block 4.
And a rubber gasket 11 is arranged between the upper disc top cover 7 and the rock sample 5 on the fault.
The gas injection pipe 18 comprises an outer hard pipe 12 and an inner hose 13, the outer hard pipe 12 is arranged outside the box body 2, the inner hose 13 is arranged in the cavity 201 and between the disc top covers 7 on the fault, one end of the outer hard pipe 12 is communicated with the inner hose 13, and the other end of the inner hose 13 is communicated with the gas storage of the rock sample 5.
The rock sample 5 comprises a quarter cavity wall block 501, a three quarter cavity wall block 502 and a perspective piece 503, the perspective piece 503 being arranged between the quarter cavity wall block 501 and the three quarter cavity wall block 502.
The strain gage 3 is disposed between the quarter cavity wall block 501 and the see-through 503, and between the three quarter cavity wall block 502 and the see-through 503.
The inner peripheral wall of the cavity 201 is provided with a reinforcing column 14. The reinforcing columns 14 are distributed in a plurality at intervals.
The gas injection pipe 18 is provided with a pressure gauge 15, a flow meter 16 and a valve 17.
When the salt rock gas storage reservoir vibration deformation simulation experiment device with the interlayer cavity wall under the fault effect is used, firstly, nitrogen or air is injected through the outer hard pipe 12 of the gas injection pipe 18, the salt rock gas storage reservoir enters the gas storage reservoir of the rock sample 5 through the inner hose 13, the pressure and the capacity of the gas in the gas storage reservoir are observed through the pressure gauge 15 and the flow meter 16, the air tightness of the gas storage reservoir can be detected by closing the valve 17, the vibration device 1 is started, the box body 2 is driven to vibrate together, the rock sample 5 and the lower-fault disc test block 4 are enabled to displace in the cavity 201, the lower-fault disc test block 4 extrudes the rock sample 5 under the action of the first spring 9 and the second spring 10, the quarter cavity wall rock block 501 and the three-quarter cavity wall rock block 502 of the rock sample 5 are of a three-layer structure with the interlayer and reserve a gas storage cavity space, the salt rock cavity with the interlayer is simulated, and the perspective piece 10 is arranged between the three-quarter cavity wall rock block 502 and the quarter cavity wall rock block 501 and is used for simulating the vibration of the interlayer cavity containing the salt rock storage reservoir and simulating the interlayer cavity containing the interlayer cavity And (3) movement during fault activity, so that the vibration deformation condition of the interlayer cavity wall of the salt rock gas storage reservoir belt caused by the fault activity caused by vibration is observed and measured.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a salt rock gas reservoir takes intermediate layer chamber wall vibrations deformation simulation experiment device under fault effect which characterized in that: comprises a vibrating device (1) for providing a vibration source, a box body (2) arranged on the vibrating device (1) and a strain gauge (3) connected with an external detection device, a cavity (201) which is arranged in a sealing way is arranged in the box body (2), a fault lower disk test block (4) and a rock sample (5) with a gas storage are arranged in the cavity (201), a gas injection pipe (18) communicated with a gas storage in the rock sample (5) is arranged on the box body (2), the strain gauge (3) is arranged on the rock sample (5), a gap is arranged between the cavity (201) and the rock sample (5) and the fault lower disk test block (4), when the vibration device (1) provides a vibration source, the fault lower wall test block (4) and the rock sample (5) are displaced in the cavity (201) and mutually extruded, and simultaneously detecting the deformation of the rock sample (5) when the rock sample vibrates through the strain gauge (3).
2. The salt rock gas reservoir area intermediate layer cavity wall vibration deformation simulation experiment device under fault effect of claim 1, characterized in that: the box body (2) is provided with a plurality of balls (6) on the inner peripheral wall of the inner cavity.
3. The salt rock gas reservoir area intermediate layer cavity wall vibration deformation simulation experiment device under fault effect of claim 1, characterized in that: be provided with fault hanging wall top cap (7) and fault undercarriage top cap (8) in cavity (201), fault hanging wall top cap (7) are located rock specimen (5) top, fault undercarriage top cap (8) are located fault undercarriage test block (4) top.
4. The salt rock gas reservoir area intermediate layer chamber wall vibrations deformation simulation experiment device of claim 3 under fault effect, characterized in that: be provided with first spring (9) between fault lower wall top cap (8) and fault lower wall test block (4), be provided with second spring (10) between fault lower wall test block (4) and cavity (201), first spring (9) and second spring (10) set up the both sides at fault lower wall test block (4) relatively.
5. The salt rock gas reservoir area intermediate layer chamber wall vibrations deformation simulation experiment device of claim 3 under fault effect, characterized in that: and a rubber gasket (11) is arranged between the upper disc top cover (7) and the rock sample (5) on the fault.
6. The salt rock gas reservoir area intermediate layer chamber wall vibrations deformation simulation experiment device of claim 5 under fault effect, characterized in that: gas injection pipe (18) include outer hard tube (12) and interior hose (13), outer hard tube (12) set up outside box (2), interior hose (13) set up in cavity (201) and between disc top cap (7) on the fault, communicate between the one end of outer hard tube (12) and interior hose (13), the other end of interior hose (13) and the gas storage storehouse intercommunication of rock specimen (5).
7. The salt rock gas reservoir area intermediate layer cavity wall vibration deformation simulation experiment device under fault effect of claim 1, characterized in that: the rock sample (5) comprises a quarter cavity wall rock block (501), a three quarter cavity wall rock block (502) and a perspective piece (503), wherein the perspective piece (503) is arranged between the quarter cavity wall rock block (501) and the three quarter cavity wall rock block (502).
8. The salt rock gas reservoir area intermediate layer cavity wall vibration deformation simulation experiment device under fault effect of claim 7, characterized in that: the strain gauges (3) are arranged between the quarter cavity wall block (501) and the see-through piece (503), and between the three quarter cavity wall block (502) and the see-through piece (503).
9. The salt rock gas reservoir area intermediate layer cavity wall vibration deformation simulation experiment device under fault effect of claim 1, characterized in that: the inner peripheral wall of the cavity (201) is provided with a reinforcing column (14).
10. The salt rock gas reservoir area intermediate layer cavity wall vibration deformation simulation experiment device under fault effect of claim 1, characterized in that: the gas injection pipe (18) is provided with a pressure gauge (15), a flow meter (16) and a valve (17).
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| CN202110451302.0A CN113155388B (en) | 2021-04-26 | 2021-04-26 | Device for simulating vibration deformation of interlayer cavity wall of salt rock gas storage reservoir under fault action |
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| 王贵君等: "断层对盐岩储库流-固耦合及稳定性的影响", 《河北工业大学学报》 * |
| 王贵君等: "断层对盐岩储库流-固耦合及稳定性的影响", 《河北工业大学学报》, no. 03, 15 June 2018 (2018-06-15) * |
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