CN102011579B - Large-size interlayer-containing salt cavity-manufacturing test method - Google Patents
Large-size interlayer-containing salt cavity-manufacturing test method Download PDFInfo
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- CN102011579B CN102011579B CN 201010519126 CN201010519126A CN102011579B CN 102011579 B CN102011579 B CN 102011579B CN 201010519126 CN201010519126 CN 201010519126 CN 201010519126 A CN201010519126 A CN 201010519126A CN 102011579 B CN102011579 B CN 102011579B
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Abstract
The invention discloses a large-size interlayer-containing salt cavity-manufacturing test method. The large-size interlayer-containing salt cavity-manufacturing test method comprises the following steps of: 1, drilling interlayer-containing rock salt with diameter of less than 10 centimeters on site and performing stratified analysis on the interlayer-containing rock salt; 2, manufacturing a salt model, performing cross pavement on each rock salt layer and each interlayer according to the distribution mode of the interlayer-containing rock salt in the step 1, and pressing by a press machine when paving one layer, wherein pure rock salt powder serves as a pressing material of each rock salt layer and calcium sulfate and clay serve as a pressing material of each interlayer; and 3, performing cavity-manufacturing simulation according to on-site cavity-manufacturing process parameters. By the method, the large-size interlayer-containing salt can be obtained and requirements of a simulation test can be met by analyzing the natural interlayer-containing rock salt and manufacturing the salt model; the cavity-manufacturing process of the interlayer-containing rock salt can be simulated truly by performing cavity-manufacturing simulation through the salt model, so that natural cavity-manufacturing process parameters can be obtained and is used for guiding the actual project; and the cavity-manufacturing test cost can be greatly reduced by manufacturing the salt model.
Description
Technical field
The present invention relates to a kind of rock salt and make the chamber test method, relate in particular to a kind of large scale and contain sandwich type salt and make the chamber test method.
Background technology
Relative other deposit mode, rock salt underground oil and gas warehouse have safety, economic characteristics, but external rock salt underground storage has accident that (as hydrocarbon seepage, the inefficacy of molten chamber, subsidence etc.) take place still the time.At present external underground rock salt bank is nearly all built in the huge thick salt dome, and China can build the rock salt of underground storage and is stratiform rock salt, has thin thickness, interlayer is many, grade is low, the characteristics of buried depth big (answering the rock stratum buried depth as the Hubei cloud is 1000m).The underground rock salt bank construction of China difficulty is bigger by contrast, operation risk is higher.The shape of control rock salt underground storage is the minimizing accident and avoids one of main means of operational risk that the bank with ideal form has better stability, seal and longer application life.The research that contains interlayer salt karst chamber cavity geometry control technology is the basis of rock salt bank shape control, yet since be limited by the large scale rock salt obtain and field trial with high costs, the research that the chamber is made in simulation at China stratiform rock salt large scale almost fails to carry out.
In the prior art, the maximum salt core diameter that can obtain is approximately 10cm, and the cost of a coring is up to units up to a million, if it is higher to carry out its cost of field trial.Even obtained the salt rock core of large-size, also because can't reflecting China's many interlayers rock salt, the factors such as dimensional effect of test specimen make the characteristics in chamber.Carried out rock salt test specimen (diameter 10cm as petroleum exploration and development academy Langfang branch, high 20cm) make chamber test, studied and respectively made chamber technology and make technical characterictic in the process of chamber at pure rock salt, but because its size is too little, there is not interlayer, and fails truly to reflect that the stratiform rock salt makes the chamber activities.
Therefore, existing rock salt is made the chamber test method and all had following deficiency: one, rock core drills through with high costsly, and dimensional 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, because the core diameter that drills through is too little, can't satisfy the requirement of model testing.
Summary of the invention
At weak point of the prior art, the invention provides a kind of large scale and contain sandwich type salt and make the chamber test method.This method can obtain diameter bigger contain sandwich type salt, and satisfy the simulated test requirement, more real simulated contains the interlayer rock salt and makes the chamber process, to obtain the natural chamber technological parameter of making, is used for instructing engineering reality.
A kind of large scale provided by the invention contains sandwich type salt and makes the chamber test method, and this method comprises the steps:
1), contain the analysis of sandwich type 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 characteristic, dissolution properties and the interlayer regularity of distribution that contain the interlayer rock salt;
2), making type salt model: at first, select for use pure rock salt powder as the pressed material of salt rock stratum, select for use calcium sulfate and clay as the pressed material of interlayer; Then, according to the distribution mode that contains the interlayer rock salt in the step 1), be to intersect by one deck salt rock stratum one deck interlayer in the mould of 25～40cm to lay at diameter, every laying one deck working pressure machine compacting, the pressure control of forcing press is at 45～85MPa; At last, the diameter of the type salt model of compression moulding is 25～40cm, highly is 40～60cm;
3), make the chamber simulation: at first, in the end boring of type salt, and arrange and make the chamber sleeve pipe; Then, the oiling in the boring of the outermost layer protective casing by making the chamber sleeve pipe, again by make the chamber sleeve pipe outer tube and inner sleeve carry out water filling or adopt halogen; Make the chamber simulation by making chamber technology at last, obtain and make the chamber technological parameter.
Beneficial effect of the present invention: the present invention is by containing the analysis of sandwich type salt to natural, making type salt model, can obtain diameter bigger contain sandwich type salt, and satisfy the simulated test requirement; Make the chamber simulation by the type salt model of making, more real simulated contains the interlayer rock salt and makes the chamber process, to obtain the best chamber technological parameter of making, is used for instructing engineering reality; And, by making type salt model, can reduce greatly and make chamber experimentation cost.
Description of drawings
Fig. 1 is type salt structure of models schematic diagram;
In the accompanying drawing: 1-mould; 2-salt rock stratum; 3-interlayer.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in further detail.
A kind of large scale contains sandwich type salt and makes the chamber test method, and this method comprises the steps:
1), contain the analysis of sandwich type salt to natural: the scene drills through diameter and contains the interlayer rock salt less than 10cm, the interlayer rock salt that contains that the scene is drilled through carries out chromatographic analysis, obtains the physical characteristic (as intensity, modulus of elasticity, poisson's ratio), dissolution properties and the interlayer that contain the interlayer rock salt and distributes.
2), making type salt model: at first, select for use pure rock salt powder as the pressed material of salt rock stratum, select for use calcium sulfate and clay as the pressed material of interlayer; Then, according to the distribution mode that contains sandwich type salt in the step 1), be to intersect by one deck salt rock stratum one deck interlayer in the mould of 25～40cm to lay at diameter, every laying one deck working pressure machine compacting, the pressure control of forcing press is at 45～85MPa; At last, the diameter of the type salt model of compression moulding is 25～40cm, and height is 40～60cm, and as shown in Figure 1, the type salt of compression moulding has the physico mechanical characteristic similar to natural rock salt.
3) make the chamber simulation: at first, in the end boring of type salt, and arrange and make chamber sleeve pipe (making the chamber sleeve pipe and divide three layers, is protective casing, outer tube, inner sleeve from outside to inside successively); Then, the oiling in the boring of the outermost layer protective casing by making the chamber sleeve pipe is carried out water filling or is adopted halogen by outer tube and the inner sleeve of making the chamber sleeve pipe; At last, on-the-spot make the chamber simulation by making chamber technology (fill cycle mode, lubricating pad position, casing space position, water filling row halogen flow), obtain the best and make the chamber technological parameter, thereby obtain the parameter that influences to the expansion of stratiform rock salt cavity geometry.
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 had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical scheme of this patent, and not breaking away from aim and the scope of the art of this patent scheme, it all should be encompassed in the middle of the claim scope of this patent.
Claims (1)
1. a large scale contains sandwich type salt and makes the chamber test method, it is characterized in that this method comprises the steps:
1), contain the analysis of sandwich type 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 characteristic, dissolution properties and the interlayer regularity of distribution that contain the interlayer rock salt; Described physical characteristic refers to intensity, modulus of elasticity and poisson's ratio;
2), making type salt model: at first, select for use pure rock salt powder as the pressed material of salt rock stratum, select for use calcium sulfate and clay as the pressed material of interlayer; Then, according to the distribution mode that contains the interlayer rock salt in the step 1), be to intersect by one deck salt rock stratum one deck interlayer in the mould of 25～40cm to lay at diameter, every laying one deck working pressure machine compacting, the pressure control of forcing press is at 45～85MPa; At last, the diameter of the type salt model of compression moulding is 25～40cm, highly is 40～60cm;
3), make the chamber simulation: at first, in the end boring of type salt, and arrange and make the chamber sleeve pipe; Then, the oiling in the boring of the outermost layer protective casing by making the chamber sleeve pipe is carried out water filling or is adopted halogen by outer tube and the inner sleeve of making the chamber sleeve pipe; Make the chamber simulation by making chamber technology at last, obtain and make the chamber technological parameter.
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| CN 201010519126 CN102011579B (en) | 2010-10-26 | 2010-10-26 | Large-size interlayer-containing salt cavity-manufacturing test method |
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| CN102011579B true CN102011579B (en) | 2013-08-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102606146B (en) * | 2012-02-21 | 2014-12-10 | 重庆大学 | Salt cavern model test method for simulating multi-interbedded salt rock geological conditions |
| CN102621593B (en) * | 2012-02-21 | 2014-01-15 | 重庆大学 | Multi-interlayer rock salt geological condition simulated cavity construction model test device |
| CN109187321B (en) * | 2018-08-29 | 2021-02-26 | 中国石油化工股份有限公司 | Large-size salt level communication well group water-soluble cavity-making simulation experiment method |
| CN113137274A (en) * | 2020-01-17 | 2021-07-20 | 中国石油天然气集团有限公司 | Preparation method of salt cavern gas storage cavity model |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819132A (en) * | 2010-04-09 | 2010-09-01 | 重庆大学 | Method for realizing rock salt dissolving characteristic test under triaxial stress condition |
| CN201593407U (en) * | 2009-12-16 | 2010-09-29 | 中国石油天然气集团公司 | Rock salt gas storage solution mining simulating device |
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| US8794316B2 (en) * | 2008-04-02 | 2014-08-05 | Halliburton Energy Services, Inc. | Refracture-candidate evaluation and stimulation methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201593407U (en) * | 2009-12-16 | 2010-09-29 | 中国石油天然气集团公司 | Rock salt gas storage solution mining simulating device |
| CN101819132A (en) * | 2010-04-09 | 2010-09-01 | 重庆大学 | Method for realizing rock salt dissolving characteristic test under triaxial stress condition |
Non-Patent Citations (4)
| Title |
|---|
| 一种盐岩相似材料的试验研究;刘建平等;《岩土力学》;20091231;第30卷(第12期);3661 * |
| 刘建平等.一种盐岩相似材料的试验研究.《岩土力学》.2009,第30卷(第12期), |
| 张强勇等.盐岩油气储库介质地质力学模型相似材料的研制.《岩土力学》.2009,第30卷(第12期), |
| 盐岩油气储库介质地质力学模型相似材料的研制;张强勇等;《岩土力学》;20091231;第30卷(第12期);3582-3583 * |
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