System and method for testing biological effect of water under supercritical CO 2 phase change pulse

A biological effect and test system technology, which is applied in the field of water biological effect test system under supercritical CO2 phase change pulse, can solve the problems of water shock wave biological effect hysteresis engineering application, affecting the promotion and application of phase change expansion fracturing technology, etc.

Inactive Publication Date: 2019-11-12
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] But underwater supercritical CO 2 The attenuation response of shock waves induced by phase change expansion in water bodies and the biological effects of water shock waves lag far behind engineering applications, which affect the supercritical CO 2 Popularization and Application of Phase Change Expansion Fracturing Technology

Method used

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  • System and method for testing biological effect of water under supercritical CO 2 phase change pulse
  • System and method for testing biological effect of water under supercritical CO 2 phase change pulse

Examples

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Embodiment 1

[0028] see figure 1 , in the embodiment of the present invention, a supercritical CO 2 Phase change pulse water biological effect test system, including cracking tube 3 and data acquisition device,

[0029] In this embodiment, the cracking tube 3 is arranged in the rock formation 1 below the water surface 2, and is filled with liquid CO 2 , and connected to the fracturing control system, after the fracturing control system issues a control command, the liquid CO is heated instantaneously 2 Complete phase change fracturing to break open rock formation 1;

[0030] The data acquisition device is arranged outside the rock formation 1 and at the radial position of the cracking pipe 3, and is used to collect the water shock wave pressure at multiple positions when the rock formation 1 bursts;

[0031] Specifically, the data acquisition device includes a computer 6 and a plurality of pressure sensors 4, wherein:

[0032] The number of pressure sensors 4 is multiple, arranged outs...

Embodiment 2

[0038] see figure 2 , in the embodiment of the present invention, a supercritical CO 2 A test method for biological effects in water under phase change pulses, comprising the following steps:

[0039] S1, using a rock drill to drill holes in the rock formation to form fracturing holes for placing fracturing tubes;

[0040] S2, arranging several pressure sensors hierarchically along the radial position of the fracturing hole outside the rock formation, and connecting the pressure sensors to the computer; here, the distance between the pressure sensors on the same layer is an integer multiple of the radius of the fracturing hole;

[0041] S3, will be filled with liquid CO 2 Put the fracturing tube into the fracturing hole and connect it with the fracturing control system. After the debugging of each instrument is completed, the fracturing tube is controlled to fracturing through the fracturing control system, and the pressure sensor collects the impact pressure value of the w...

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Abstract

The invention discloses a system for testing the biological effect of water under supercritical CO 2 phase change pulse. The system comprises a fracturing pipe and a data acquisition device, wherein the fracturing pipe is arranged in a rock stratum below a water surface, liquid CO 2 is filled in the fracturing pipe and is connected with a fracturing control system, and after the fracturing controlsystem sends out a control instruction, the fracturing pipe is heated instantly to enable liquid CO 2 to complete phase change fracturing so as to break the rock stratum; and the data acquisition device is arranged outside the rock stratum and at the radial position of the fracturing pipe and is used for acquiring water shock wave pressures at a plurality of positions when the rock stratum is cracked. The system and method for testing the biological effect of water under supercritical CO 2 phase change pulse, provided by the invention, have the advantages that: the water shock wave generatedwhen the rock stratum is cracked is collected by utilizing the pressure sensors which are arranged outside the rock stratum and are positioned at the radial position of the fracturing pipe and are simultaneously arranged in layers, the arrangement mode of the pressure sensors accords with the transmission path of the water shock wave, and a foundation is laid for establishing an shock pressure attenuation equation.

Description

technical field [0001] The invention relates to the technical field of underwater reef removal and rock breaking, in particular to a supercritical CO 2 A system and method for testing water biological effects under phase change pulses. Background technique [0002] At present, common reef removal methods include mechanical rock breaking, water jet rock breaking, hydraulic fracturing rock breaking, chemical blasting, etc. However, due to the complex river bed topography and water flow conditions, underwater mechanical construction is more difficult. However, the blasting of traditional emulsion explosives produces a large amount of toxic and harmful gases and dust, and the water shock wave caused by it is extremely harmful to the four major family fishes and rare fishes in the Yangtze River Basin. , low noise, pollution-free, safe and environmentally friendly non-chemical explosive underwater rock breaking new technology. [0003] Liquid CO 2 Phase change expansion fractu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L23/00
CPCG01L23/00
Inventor 阿比尔的袁和川刘明维丛宇梁越王俊杰吴林健
Owner CHONGQING JIAOTONG UNIVERSITY
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