CN103790564B - Hot-dry rock fracturing high-pressure recovery-ratio-increasing laboratory simulation device - Google Patents

Hot-dry rock fracturing high-pressure recovery-ratio-increasing laboratory simulation device Download PDF

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CN103790564B
CN103790564B CN201410012026.8A CN201410012026A CN103790564B CN 103790564 B CN103790564 B CN 103790564B CN 201410012026 A CN201410012026 A CN 201410012026A CN 103790564 B CN103790564 B CN 103790564B
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pressure
fracturing
high pressure
hydraulic
sample
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CN103790564A (en
Inventor
张延军
张佳宁
李正伟
郭亮亮
胡忠君
于子望
高平
张庆
许天福
唐生荣
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Nantong Huaxing Petroleum Instrument Co Ltd
Jilin University
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Abstract

The invention provides a hot-dry rock fracturing high-pressure extraction laboratory simulation device. The device comprises a fracturing fluid injection system, a proppant injection system, a high-pressure gas boosting injection system, a fracturing body, an annular pressure applying system and a high-pressure pipe valve. Proppant injection system comprises indirect proppant injection and curing. The high-pressure gas boosting injection system comprises gas boosting and indirect gas injection. The fracturing body comprises a sample fracturing chamber and a sample annular-pressure chamber. The fracturing chamber comprises a three-dimensional fixing support and a three-dimensional hydraulic system. The three-dimensional hydraulic system comprises a hydraulic sliding cavity and a hydraulic moving plug. The sample annular-pressure chamber comprises an annular-pressure chamber steel plate and agum sleeve, a cavity is formed between the gum sleeve and the steel plate, and fluid is injected to realize pressure coating effect. A split module combination structure is adopted, original samples of fracturing samples are ensured to be unchanged, proppant injection is performed accurately, high-pressure gas is injected for displacement and reproduction, and recovery ratio is increased. The device has the advantages of novel structure and safety and durability.

Description

A kind of hot dry rock pressure break high pressure improves recovery ratio laboratory simulation device
Technical field
The present invention relates to a kind of hot dry rock pressure break high pressure improves recovery ratio laboratory simulation device, especially with regard to hot dry rock After fractured in-situ and heat exchange displacement displacement simulation test device, and in particular to a kind of hot dry rock pressure break high pressure improves recovery ratio reality Test room analogue means.
Background technology
At present, the exploitation dynamics for occupying the hot dry rock resource of larger proportion is less, in the face of current energy growing tension, Especially in the case of resource critical shortage, while exploiting huge heat resource, the recovery ratio of heat resource is improved, improve heat The comprehensive utilization ratio of energy resource is even more important.
30 times or so equivalent to oil, natural gas and coal ability of hot dry rock resource proved reserves.Accordingly, it would be desirable to a kind of Pressure break quarrying apparatus can to reservoir pressure break failure mechanism, prolong raw rule and carry out motionless research in situ, more accurately react real Border situation, to lift the deep understanding to problem above, to make the technology obtain wider popularization and application.
At present, the equipment in terms of domestic hydraulic fracturing is more in terms of being used for coal bed fracturing, and formation rock pressure break is recovered the oil also to be had, It is used for fracturing, fracture system to be studied, research meanses are also plotted to coating, fluorescence etc. from range estimation, but bias toward to pressure Testing research after splitting, does not carry out post-fracturing note and adopts and improve recovery ratio research, and heat energy coefficient of mining is not carried out further Research, to reach objective evaluation production efficiency.
The content of the invention
Goal of the invention：To solve the above problems, the invention provides a kind of hot dry rock pressure break high pressure improves recovery ratio experiment Room analogue means.
Technical scheme：To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of hot dry rock pressure break high pressure improves recovery ratio laboratory simulation device, including pressure break liquid injection system, proppant Injected system, gases at high pressure supercharging injected system, pressure break main body, ring pressure application system, high pressure pipe valve；The proppant injection System includes proppant injection and solidification indirectly；The gases at high pressure supercharging injected system includes that gas boosting and gas are noted indirectly Enter；The pressure break main body includes sample pressure break storehouse and sample loop pressure chamber；The sample pressure break storehouse includes three-dimensional fixed support and three Dimension hydraulic system；The three-dimensional hydraulic system includes hydraulic pressure sliding cavity and hydraulic pressure motion stops；The sample loop pressure chamber includes ring pressure Chamber steel plate and gum cover, have cavity between gum cover and steel plate, injection liquid realizes pressure package action；Fracturing fluid injects and ring pressure Applying is connected to realize by high pressure line with high voltage control component.
Preferably, sample pressure break storehouse is using three-dimensional fixed support and three-dimensional hydraulic movable supporting.
Preferably, hydraulic pressure motion stops adopt high-quality PTFE.
The cavity of generation preferably, the foundation of ring pressure is connected by external steel plate with gum cover.
The cavity of generation preferably, the foundation of ring pressure is connected by external steel plate with gum cover, by the pressure to cavity To realize the parcel to model ontology periphery.
Preferably, fracturing fluid, heat exchange displacement liquid, high pressure injection adopt the operation of liquid, proppant liquid, confined pressure by high pressure valve Door is connected with pipeline, and the common operational for passing through them, coordinates to open and close, and realizes pressure break, supercharging injection, high temperature and high pressure environment mould Intend and be connected with pressure, temperature, measuring instrument is associated.
Beneficial effect：While heat note is adopted, the maximum amount harvesting of heat energy is achieved by the prior art, and by high pressure Gas drills through procreation function, greatly improves thermal recovery yield, under the equal mining conditions, reduces cost of winning.
Description of the drawings
Fig. 1 is that hot dry rock pressure break high pressure of the present invention improves recovery ratio laboratory simulation device flow chart.
Specific embodiment
Embodiment：
A kind of hot dry rock pressure break high pressure as described in Figure 1 improves recovery ratio laboratory simulation device, including fracturing fluid injection System, proppant injected system, gases at high pressure supercharging injected system, pressure break main body, ring pressure application system, high pressure pipe valve；Institute Proppant injected system is stated including proppant injection and solidification indirectly；The gases at high pressure supercharging injected system includes gas boosting Inject indirectly with gas；The pressure break main body includes sample pressure break storehouse and sample loop pressure chamber；The pressure break storehouse includes three-dimensional fixed Support and three-dimensional hydraulic system；The three-dimensional hydraulic system includes hydraulic pressure sliding cavity and hydraulic pressure motion stops；The sample loop presses chamber Chamber steel plate and gum cover are pressed including ring, has cavity between gum cover and steel plate, injection liquid realizes pressure package action；The pressure break Liquid injects and applies to be connected to realize with high voltage control component by high pressure line with ring pressure.
As shown in figure 1, high pressure fracture pump 1, pressure break liquid container 2, proppant injection container 3, gas boosting container 4, gas Pressurized container 5, gas boosting pump 6, model process DATA REASONING 7, hydraulic controller 8, Hydrauservo System 9, die body 10, Ring pressure application system 11, system pressure control and harvesting 12, blender 13.
The hot dry rock pressure break high pressure of the present invention improves recovery ratio laboratory simulation device, including by fracturing pump and exchange system The pressure break dynamical system of composition, fracturing fluid injects sample via valve by hydraulic pressure through hole beyond the Great Wall.Before this, it is necessary to logical Cross applying of the adjustment Hydrauservo System 9 of hydraulic controller 8 on sample three-dimensional.Frac pressure is obtained by sensor. After pressure break, keep applying power constant, ring die block applying is carried out to overall peripheral, and by ring press pump injection ring pressure, ring pressure pressure Power is 1.1-1.2 times of heat exchange pressure.Meanwhile, pressure stability control is carried out by 12 pairs of systems of system pressure control and harvesting, After control pressure setting, then carry out heat exchange and improve recovery ratio experiment.Heat exchange pilot production fluid (or proppant) is held by proppant injection Device 3 injects sample via pipeline, and heater heat exchanging pilot production fluid (or proppant) of Jing die bodies 10 carries out high temperature mould Intend (aging action), gases at high pressure, by the pressurization of gas boosting pump 6, form high pressure via gas boosting container 4,5, Carry out being sufficiently displaced from procreation into die body 10 via blender 13, form high temperature and high pressure environment, by pressure break liquid container 2 again Secondary injection exploitation liquid, carries out big flow and quickly exchanges heat, and realizes the heat exploitation to sample and improves thermal recovery yield.
In above-mentioned analog system device, model three-phase force can be adjusted as needed, and according to force active face position Shifting amount carries out the selection of pad.
When carrying out heat exchange displacement experiment using analog system device of the present invention, experiment needs slowly to discharge pressure after terminating, and drops After low temperature, experiment package can be dismantled.
After experiment is finished, model ontology inner side, valve, container etc. are cleaned, cleaning fluid passes through pipeline valve, puts Sky, repeats 2-3 cleaning, into next experiment.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (5)

1. a kind of hot dry rock pressure break high pressure improves recovery ratio laboratory simulation device, it is characterised in that：It is including fracturing fluid injection System, proppant injected system, gases at high pressure supercharging injected system, pressure break main body, ring pressure application system, high pressure pipe valve；It is described Proppant injected system includes proppant injection and solidification indirectly；Gases at high pressure supercharging injected system include gas boosting and Gas injects indirectly；The pressure break main body includes sample pressure break storehouse and sample loop pressure chamber；The sample pressure break storehouse includes three-dimensional solid It is fixed to support and three-dimensional hydraulic system；The three-dimensional hydraulic system includes hydraulic pressure sliding cavity and hydraulic pressure motion stops；The sample loop pressure Chamber includes that ring presses chamber steel plate and gum cover, has cavity between gum cover and steel plate, and injection liquid realizes pressure package action；Fracturing fluid Injection applies to be connected to realize with high voltage control component by high pressure line with ring pressure.
2. a kind of hot dry rock pressure break high pressure according to claim 1 improves recovery ratio laboratory simulation device, and its feature exists In：The sample pressure break storehouse is using three-dimensional fixed support and three-dimensional hydraulic movable supporting.
3. a kind of hot dry rock pressure break high pressure according to claim 1 improves recovery ratio laboratory simulation device, and its feature exists In：The hydraulic pressure motion stops adopt high-quality PTFE.
4. a kind of hot dry rock pressure break high pressure according to claim 1 improves recovery ratio laboratory simulation device, and its feature exists In：The foundation of ring pressure is connected the cavity of generation by external steel plate with gum cover.
5. a kind of hot dry rock pressure break high pressure according to claim 4 improves recovery ratio laboratory simulation device, and its feature exists In：By realizing the parcel to model ontology periphery to the pressure of cavity.
CN201410012026.8A 2014-01-11 2014-01-11 Hot-dry rock fracturing high-pressure recovery-ratio-increasing laboratory simulation device Expired - Fee Related CN103790564B (en)

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CN105823795A (en) * 2016-06-07 2016-08-03 吉林大学 Large-size flow guide pool hot dry rock fracture heat exchange device
CN107014974B (en) * 2016-11-28 2019-05-21 中国石油大学(华东) Imitative experimental appliance for enhanced geothermal system and the method for testing enhanced geothermal system reservoir thermal energy recovery rate using it
CN107893652A (en) * 2017-09-30 2018-04-10 中国石油大学(华东) The hydraulic fracturing analogue experiment installation and method of the enhanced geothermal system of hot dry rock
CN107905778A (en) * 2017-10-19 2018-04-13 中国石油大学(华东) Supercritical CO2The enhanced geothermal system experimental provision of fluid fracturing and method
CN111173485B (en) * 2018-11-12 2021-09-21 中国石油化工股份有限公司 Method for increasing hot dry rock heat storage transformation volume
CN110656918B (en) * 2019-10-23 2021-07-02 中国石油集团川庆钻探工程有限公司 Multi-scale crack two-phase flow simulation evaluation method
CN112213253B (en) * 2020-09-17 2023-06-23 中国石油天然气股份有限公司 High-temperature high-pressure multilayer single-particle aging device and method for polymeric propping agent

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