CN102621593A - Multi-interlayer rock salt geological condition simulated cavity construction model test device - Google Patents
Multi-interlayer rock salt geological condition simulated cavity construction model test device Download PDFInfo
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- CN102621593A CN102621593A CN2012100394108A CN201210039410A CN102621593A CN 102621593 A CN102621593 A CN 102621593A CN 2012100394108 A CN2012100394108 A CN 2012100394108A CN 201210039410 A CN201210039410 A CN 201210039410A CN 102621593 A CN102621593 A CN 102621593A
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Abstract
The invention discloses a multi-interlayer rock salt geological condition simulated cavity construction model test device, which comprises a round barrel, an annular heating cushion, cavity construction intermediate casings, a pressure plate, a temperature controller, an ultrasonic energy exchanger and a data processor. The outer periphery of the annular heating cushion is attached to the inner wall of the round barrel, the annular heating cushion is controlled by the temperature controller, the pressure plate is arranged at the top of the round barrel, a transmitting probe and a receiving probe on the ultrasonic energy exchanger are abreast placed on the outer wall of the round barrel, a signal output end of the ultrasonic energy exchanger is connected with the data processor, and the bottoms of the cavity construction intermediate casings penetrate through the pressure plate and extend into a cavity of an interlayer rock salt test piece. Using the device for a cavity construction simulated test of the interlayer rock salt test piece can guarantee similar model tests of geological environments and salt bed occurrence conditions, and the cavity construction process of multi-interlayer rock salt can be better observed and analyzed to provide more real theoretical support and technical guidance for avoidance of cavity construction failure and design of cavity reconstruction technological parameters.
Description
Technical field
The present invention relates to a kind of rock salt and make the chamber test unit, relate in particular to a kind of simulate many interlayers rock salt geologic condition make the chamber model test apparatus.
Background technology
Relative other deposit mode, rock salt underground oil and gas warehouse have safety, economic characteristics, but external rock salt underground storage has still the time accident that (like hydrocarbon seepage, dissolve chamber inefficacy, subsidence etc.) takes place.External underground rock salt bank is nearly all built in the huge thick salt dome at present; And can building the rock salt of underground storage, China is stratiform rock salt; Have thin thickness, interlayer is many, grade is low, the characteristics of buried depth big (salt rock stratum, Jintan, Jiangsu buried depth is about 1000m), the underground rock salt bank of China builds that difficulty is bigger, operation risk is higher by contrast.At present, China's many interlayers rock salt geologic condition is built the up to ten million units of cost of single chamber rock salt bank, and construction period is about 3 years.Jintan, Jiangsu rock salt bank work stores terminal and the seasonal peak regulation of energy base as the energy in China's West-East National Gas Transmission Project, and China's Coastal Areas energy resource supply and adjusting are had irreplaceable effect.Therefore be necessary the characteristics of building to China's many interlayers rock salt geologic condition rock salt bank, obtain the basic chamber technological parameter of making, guarantee that cavity builds safety, promote and make the chamber project progress, the chamber cost is made in reduction.
Yet; To accurately grasp crucial disaster factors of the buried dark salt of many interlayers rock stratum energy bank construction phase and make the chamber failure evading; Just must carry out layer during similar model test according to China's rock salt geologic condition; Promptly simulate the analog material on many interlayers rock salt stratum, also want simulated ground stress, ground temperature simultaneously, adopt the identical whole chamber process of making of chamber processing simulation of making.Adopt this kind can simulate geologic condition; Can simulate the layer during similar model test of making the chamber process and making chamber technology again; Can reflect more really that the distinctive rock salt geologic condition of China makes in the process of chamber influence and make chamber safety-critical disaster factors, also can existingly make the chamber technology foundation is provided for improving.
All there is following deficiency in existing test unit: one, rock core drills through with high costsly, and size effect is serious, can not reflect preferably that rock salt makes the chamber; Two, can't be implemented in the chamber process of making that contains interlayer; Three, can not simulate geologic condition.
Summary of the invention
To weak point of the prior art, the invention provides a kind of simulate many interlayers rock salt geologic condition make the chamber model test apparatus.Through this device interlayer rock salt test specimen is made the chamber simulated experiment; The more terrestrial stress in the buried salt of the real simulated China rock stratum, ground temperature, and many interlayers rock salt stratum of different bed thickness and impurity composition; The layer during similar model test that has guaranteed geologic media and salt deposit occurrence status many interlayers of observation and analysis rock salt is better made the process in chamber, makes chamber failure and reconstruction and makes the chamber process parameters design more real theoretical support and technological guidance are provided for evading.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of simulate many interlayers rock salt geologic condition make the chamber model test apparatus, comprise drum, annular heat pad, make chamber protector string, platen, temperature controller, ultrasonic transducer and data processor;
Said annular heat the pad cylindrical be attached on the inwall of drum, interlayer rock salt test specimen to be detected be arranged on annular heat the pad in, said annular heat the pad control by temperature controller; Said platen is positioned at the top of drum and is pressed on the interlayer rock salt test specimen to be detected; Transmitting probe on the said ultrasonic transducer and receiving transducer also are emitted on the outer wall of drum, and the signal output part of ultrasonic transducer connects data processor;
The said chamber protector string of making comprises oil pipe, outer tube and pipe core, and said outer tube sleeve is outside pipe core, and oil pipe is enclosed within outside the outer tube, and the bottom of said oil pipe, outer tube and pipe core is all passed platen and stretched in the cavity of interlayer rock salt test specimen.
As another kind of preferred version of the present invention, the heat inwall of pad of said annular is big, a young taper shape down suitable for reading.
Compared with prior art, of the present invention a kind of simulate many interlayers rock salt geologic condition make the chamber model test apparatus, have following advantage:
1, through this device interlayer rock salt test specimen is made the chamber simulated experiment, more terrestrial stress in real simulated China salt rock stratum, ground temperature, and many interlayers rock salt stratum of different bed thickness and impurity composition.
2, in order to monitor the whole chamber process of making; This device has increased ultrasonic transducer at the drum outer wall; Open ultrasonic transducer detection mensuration ripple and calculate the thickness of making the chamber stage arbitrarily in the time that the wall of interlayer rock salt test specimen is propagated; Interlayer rock salt test specimen chamber wall thickness through each check point of statistical fit; Be aided with the shape that three-dimensional drawing software just can draw cavity again, the realization tracking and monitoring is respectively made chamber stage cavity geometry expansion process, guarantees the layer during similar model test of geologic media and salt deposit occurrence status; Many interlayers of observation and analysis rock salt is made the process in chamber better, makes chamber failure and reconstruction and makes the chamber process parameters design more real theoretical support and technological guidance are provided for evading.
Description of drawings
Fig. 1 is the structural representation of making the chamber model test apparatus of many interlayers of simulation rock salt geologic condition;
Fig. 2 is the structural representation that drum outer wall orthogonal grid line distributes.
In the accompanying drawing: 1-drum; 2-annular pad of heating; 3-salt rock stratum; 4-interlayer; 5-interlayer rock salt test specimen; 6-platen; 7-oil pipe; 8-outer tube; 9-pipe core; 10-temperature controller; 11-check point; 12-ultrasonic transducer; 13-transmitting probe; 14-receiving transducer; 15-data processor.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done to describe in further detail.
As shown in Figure 1, that simulates many interlayers rock salt geologic condition makes the chamber model test apparatus, comprise drum 1, annular heat pad 2, make chamber protector string, platen 6, temperature controller 10, ultrasonic transducer 12 and data processor 15.Annular pad 2 the cylindrical of heating is attached on the inwall of drum 1, and interlayer rock salt test specimen 5 to be detected is arranged on annular and heats in the pad 2, and annular is heated pad 2 by temperature controller 10 controls.Platen 6 is positioned at the top of drum 1 and is pressed on the interlayer rock salt test specimen 5 to be detected.Transmitting probe 13 on the ultrasonic transducer 12 is with receiving transducer 14 and be emitted on the outer wall of drum 1 signal output part of ultrasonic transducer 12 connection data processor 15.Make the chamber protector string and comprise oil pipe 7, outer tube 8 and pipe core 9, outer tube 8 is enclosed within outside the pipe core 9, and oil pipe 7 is enclosed within outside the outer tube 8, and the bottom of said oil pipe 7, outer tube 8 and pipe core 9 is all passed platen 6 and stretched in the cavity of interlayer rock salt test specimen 5.
The method of interlayer rock salt test specimen being made the chamber simulated experiment through this device comprises the steps:
1) contain the analysis of interlayer rock salt to natural: the scene drill through diameter less than 10cm contain the interlayer rock salt, the interlayer rock salt that contains that the scene is drilled through carries out chromatographic analysis, obtains the physical characteristics, dissolution properties and the interlayer characteristic distributions that contain the interlayer rock salt.
2) make interlayer rock salt test specimen: at first, select for use pure rock salt powder (being mineral salt rock dust end), to select calcium sulphate and clay (being insoluble interlayer powder) pressed material for use as interlayer 4 as the pressed material of salt rock stratum 3; Then; According to the distribution mode that contains the interlayer rock salt in the step 1); The mode that repaves a layer interlayer in the rock salt mould middle berth one deck salt rock stratum of heating that makes is intersected laying; Every laying one deck working pressure machine is suppressed, and is pressed at last to have and the natural interlayer rock salt test specimen 5 that contains the similar physico mechanical characteristic of interlayer rock salt.
3) hole downwards on the top of interlayer rock salt test specimen 5; On the end face of interlayer rock salt test specimen 5, place and be used to simulate the tectal platen 6 on many interlayers rock salt; And arrange and make the chamber protector string that the bottom of oil pipe 7, outer tube 8 and pipe core 9 is all passed platen 6 and stretched into the cavity interior (promptly in the boring) of interlayer rock salt test specimen 5; Through the water flowing in the cavity of interlayer rock salt test specimen 5 of the annular distance between outer tube 8 and the pipe core 9,, the bittern in the cavity of interlayer rock salt test specimen 5 is discharged through pipe core 9 through the logical oil in the cavity of interlayer rock salt test specimen 5 of the annular distance between oil pipe 7 and the outer tube 8.
4) heat to interlayer rock salt test specimen 5 through the annular pad 2 of heating, and the temperature through temperature controller 10 control interlayer rock salt test specimens 5, to simulate the natural ground temperature that contains sandwich type salt.
5) on the outer wall of drum 1, press co-ordination and draw the orthogonal grid line, the intersection point of mesh lines is a check point 11.Promptly the outer wall of drum 1 is carried out setting-out and layout, as shown in Figure 2, the size of mesh opening size is decided according to measuring accuracy.
6) (generally require the frequency of transmitting probe 13 high transmitting probe on the ultrasonic transducer 12 13 and receiving transducer 14 and check point 11 places that are emitted on drum 1 outer wall; Detection range is at 1～50cm; Probe size is little; Probe diameter is less than 1cm), open ultrasonic transducer 12 and survey the mensuration ripple calculates the interlayer rock salt test specimen 5 of making the chamber stage arbitrarily in the time that the wall of interlayer rock salt test specimen 5 is propagated chamber wall thickness; Check point 11 through on the outer wall of the transmitting probe on the ultrasonic transducer 12 13 and 14 pairs of drums 1 of receiving transducer detects one by one; And the chamber wall thickness of the interlayer rock salt test specimen 5 through each check point of statistical fit (the mainly chamber wall thickness of the interlayer rock salt test specimen through data processor 15 match check points); Be aided with the shape that three-dimensional drawing software draws the cavity of interlayer rock salt test specimen 5 again; Realize that tracking and monitoring makes chamber stage cavity geometry expansion process, come effectively to analyze to make the influence of chamber technological parameter (as the locus, injection flow, lubricating pad position, terrestrial stress, ground temperature etc. of making the chamber protector string) cavity geometry control through the Changing Pattern of making cavity shape.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
- A simulation many interlayers rock salt geologic condition make the chamber model test apparatus, it is characterized in that: comprise drum (1), annular heat pad (2), make chamber protector string, platen (6), temperature controller (10), ultrasonic transducer (12) and data processor (15);The heat cylindrical of pad (2) of said annular is attached on the inwall of drum (1), and interlayer rock salt test specimen (5) to be detected is arranged on annular and heats in the pad (2), and the said annular pad (2) of heating is controlled by temperature controller (10); Said platen (6) is positioned at the top of drum (1) and is pressed on the interlayer rock salt test specimen (5) to be detected; Transmitting probe (13) on the said ultrasonic transducer (12) and receiving transducer (14) also are emitted on the outer wall of drum (1), and the signal output part of ultrasonic transducer (12) connects data processor (15);The said chamber protector string of making comprises oil pipe (7), outer tube (8) and pipe core (9); Said outer tube (8) is enclosed within outside the pipe core (9); Oil pipe (7) is enclosed within outside the outer tube (8), and the bottom of said oil pipe (7), outer tube (8) and pipe core (9) is all passed platen (6) and stretched in the cavity of interlayer rock salt test specimen (5).
- 2. according to claim 1 a kind of simulate many interlayers rock salt geologic condition make the chamber model test apparatus, it is characterized in that: the heat inwall of pad (2) of said annular is big, a young taper shape down suitable for reading.
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Cited By (9)
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| CN103630655A (en) * | 2013-12-18 | 2014-03-12 | 重庆大学 | Damaged rock salt self-healing test method for simulating geologic environment of salt cavern reservoir |
| CN103630670A (en) * | 2013-12-18 | 2014-03-12 | 重庆大学 | Testing device for determining self-recovery quantity of damaged rock salt |
| CN103645299A (en) * | 2013-12-18 | 2014-03-19 | 重庆大学 | Damaged rock salt self-healing testing device for simulating salt cavern reservoir geological environment |
| CN103852239A (en) * | 2012-11-29 | 2014-06-11 | 中国石油天然气集团公司 | Physical simulation apparatus and method of convection and diffusion of salt-cavern gas storage cavity |
| CN104459034A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Cavity construction physical simulation device and method of single-well single-cavity salt-cavern gas storage |
| CN104459033A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Salt-cavern gas storage dual-well cavity construction physical simulation device and salt-cavern gas storage dual-well cavity construction physical simulation method |
| CN105911253A (en) * | 2016-05-23 | 2016-08-31 | 中国科学院武汉岩土力学研究所 | Simulation test device for collapse of rock salt dissolving cavity interlayer and simulation test method |
| CN105675644B (en) * | 2016-01-13 | 2016-09-28 | 石家庄铁道大学 | A kind of seal test device of constant temperature and pressure |
| CN117705948A (en) * | 2023-12-20 | 2024-03-15 | 华南理工大学 | Ultrasonic testing device and method for rock damage under different conditions |
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Cited By (14)
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| CN103852239B (en) * | 2012-11-29 | 2016-08-10 | 中国石油天然气集团公司 | Salt hole air reserved storeroom molten chamber Convention diffusion physical simulating device and method |
| CN103852239A (en) * | 2012-11-29 | 2014-06-11 | 中国石油天然气集团公司 | Physical simulation apparatus and method of convection and diffusion of salt-cavern gas storage cavity |
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| CN103645299A (en) * | 2013-12-18 | 2014-03-19 | 重庆大学 | Damaged rock salt self-healing testing device for simulating salt cavern reservoir geological environment |
| CN103630670A (en) * | 2013-12-18 | 2014-03-12 | 重庆大学 | Testing device for determining self-recovery quantity of damaged rock salt |
| CN103630670B (en) * | 2013-12-18 | 2015-10-07 | 重庆大学 | A kind of test unit measuring Characteristics of Damaged Rock Salt self-recoverage amount |
| CN103630655A (en) * | 2013-12-18 | 2014-03-12 | 重庆大学 | Damaged rock salt self-healing test method for simulating geologic environment of salt cavern reservoir |
| CN103630655B (en) * | 2013-12-18 | 2015-12-30 | 重庆大学 | The Characteristics of Damaged Rock Salt self-healing test method of analog salt cave bank geologic media |
| CN104459034A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Cavity construction physical simulation device and method of single-well single-cavity salt-cavern gas storage |
| CN104459033A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Salt-cavern gas storage dual-well cavity construction physical simulation device and salt-cavern gas storage dual-well cavity construction physical simulation method |
| CN105675644B (en) * | 2016-01-13 | 2016-09-28 | 石家庄铁道大学 | A kind of seal test device of constant temperature and pressure |
| CN105911253A (en) * | 2016-05-23 | 2016-08-31 | 中国科学院武汉岩土力学研究所 | Simulation test device for collapse of rock salt dissolving cavity interlayer and simulation test method |
| CN105911253B (en) * | 2016-05-23 | 2018-06-12 | 中国科学院武汉岩土力学研究所 | Rock salt cavern interlayer collapses simulation test device and simulation experiment method |
| CN117705948A (en) * | 2023-12-20 | 2024-03-15 | 华南理工大学 | Ultrasonic testing device and method for rock damage under different conditions |
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