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Device for constructing hot dry rock heat reservoir by experimentally simulating multi-type fluid fracturing

A technology of fluid fracturing and experimental simulation, which is applied in the directions of measurement devices, analysis of suspensions and porous materials, and the use of stable tension/pressure to test the strength of materials, etc. Developmental impact and other issues, to achieve the effect of increasing complexity, simple structure, and improving ability

Pending Publication Date: 2020-08-18
HUANENG CLEAN ENERGY RES INST +1
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Problems solved by technology

[0004] At present, hydraulic fracturing is mainly used in hot dry rock fracturing. The application of carbon dioxide and nitrogen in hot dry rock fracturing technology has not yet been carried out. The fracturing effects of different fluid components under different geological backgrounds are not clear. The influence of engineering factors on fracture development after fracturing is not clear, and there is a lack of relevant simulation experiment equipment

Method used

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  • Device for constructing hot dry rock heat reservoir by experimentally simulating multi-type fluid fracturing

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings:

[0021] reference figure 1 The device of the present invention for experimentally simulating multi-type fluid fracturing to build dry hot rock thermal storage includes a thermostat 25, a first pressure pump 27, a first pressure sensing rod 28, a second pressure pump 30, and a second Pressure sensing rod 31, third pressure pump 33, third pressure sensing rod 34, N 2 Cylinder 1, first tube 11, CO 2 The gas cylinder 2, the second conduit 23, the third conduit 17, the water container 13, the reagent funnel 18, and the fourth conduit 22; the hot dry rock sample 26 is located in the incubator 25, and the top of the dry hot rock sample 26 is provided with a A pressure sensor piece 29, the first pressure pump 27 is connected to the first pressure sensor piece 29 via the first pressure sensor rod 28, and a second pressure sensor is provided on the right side of the dry ho...

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Abstract

The invention discloses a device for constructing a hot dry rock heat reservoir by experimentally simulating multi-type fluid fracturing. The device comprises a constant-temperature box, a first pressure pump, a first pressure sensing rod, a second pressure pump, a second pressure sensing rod, a third pressure pump, a third pressure sensing rod, an N2 gas cylinder, a first guide pipe, a CO2 gas cylinder, a second guide pipe, a third guide pipe, a water container, a reagent funnel and a fourth guide pipe, the device can simulate the fracturing effect of carbon dioxide, nitrogen and water on thehot dry rock under different experimental conditions.

Description

Technical field [0001] The invention belongs to the technical field of geothermal resource development, and relates to a device for experimentally simulating multi-type fluid fracturing to build a dry hot rock thermal storage. Background technique [0002] As a very competitive clean and renewable energy, geothermal resources play an important role in coping with global climate change, energy saving, emission reduction and smog management. Hot dry rock refers to the rock (body) with high underground temperature but lack of fluid or a small amount of fluid due to low porosity and low permeability. The heat stored in hot dry rock needs to be artificially fractured to form an enhanced geothermal system (EGS). Can be mined. The outstanding feature of dry hot rock that is different from hydrothermal geothermal rock is that the reservoir is dense, without or containing a small amount of fluid, and it must be fractured to store heat. The development of hot dry rock geothermal usually ...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01N15/08
CPCG01N3/12G01N15/082G01N15/088G01N2203/0003G01N2203/0019G01N2203/0044G01N2203/0048G01N2203/0067G01N2203/0647
Inventor 荆铁亚赵文韬张健王金意
Owner HUANENG CLEAN ENERGY RES INST
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