$Experimental study on cavity pressure of carbon dioxide fracturing tube$
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Experimental study on cavity pressure of carbon dioxide fracturing tube

The peak pressure and duration of high-pressure gas in the process of rock breaking by carbon dioxide fracturing will have a great impact on the fracturing effect of rock mass. For the sake of obtaining dynamic pressure response characteristic in the fracturing tube, the pressure-time curve of liqui...

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Autores principales:	Yongqing Zeng, Haibo Li, Xiang Xia, Shouchun Deng, Renjie Wu, Xiaohong Liu
Formato:	article
Lenguaje:	EN
Publicado:	JVE International 2021
Materias:	liquid carbon dioxide cavity pressure phase change blasting carbon dioxide fracturing tube Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/854d64ed90824415b60955b3e6f07ea1
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id	oai:doaj.org-article:854d64ed90824415b60955b3e6f07ea1
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spelling	oai:doaj.org-article:854d64ed90824415b60955b3e6f07ea12021-11-15T19:20:56ZExperimental study on cavity pressure of carbon dioxide fracturing tube1392-87162538-846010.21595/jve.2021.21967https://doaj.org/article/854d64ed90824415b60955b3e6f07ea12021-08-01T00:00:00Zhttps://www.jvejournals.com/article/21967https://doaj.org/toc/1392-8716https://doaj.org/toc/2538-8460The peak pressure and duration of high-pressure gas in the process of rock breaking by carbon dioxide fracturing will have a great impact on the fracturing effect of rock mass. For the sake of obtaining dynamic pressure response characteristic in the fracturing tube, the pressure-time curve of liquid CO2 blasting system was measured through several cavity pressure test of carbon dioxide fracturing tube. The cavity pressure test under different parameters of carbon dioxide quantity, activator quantity and thickness of energy release plate is carried out, in which TST6200 transient signal acquisition instrument, 109c12 type blasting shock wave sensor and special signal processing software system are used. The relation curve between pressure and time in the liquid CO2 fracturing tube was effectively measured and the variation law of pressure curve was analyzed. The results show that after igniting the liquid carbon dioxide fracturing tube, the cavity pressure rise slowly, then increases sharply and decays rapidly, when the pressure reaches the yield pressure limit of energy release plate, the energy release plate will be destroyed and high pressure gas will be released rapidly; the peak pressure in the CO2 fracturing system ranges from 169.1 MPa to 260.2 MPa, the duration of positive pressure is from 21.1 ms to 74.8 ms, and the peak pressure arrival time is between 13.2 ms and 67.7 ms. This paper attempts to establish the formula relationship between peak cavity pressure and thickness of energy release plate for carbon dioxide fracturing tube; the welded flat head formula, tensile failure formula and shear failure formula are used to calculate peak cavity pressure of carbon dioxide fracturing tube, in which the calculated results are compared with the measured values, the welded flat head formula severely underestimates the peak cavity pressure; conversely, the tensile failure formula slightly overestimated the peak cavity pressure; the shear failure formula can accurately reflect the peak cavity pressure of fracturing tube. The conclusions can be directly used for the design and optimization of fracturing tube by using different thickness energy release plate to control the cavity pressure of carbon dioxide fracturing tube.Yongqing ZengHaibo LiXiang XiaShouchun DengRenjie WuXiaohong LiuJVE Internationalarticleliquid carbon dioxidecavity pressurephase change blastingcarbon dioxide fracturing tubeMechanical engineering and machineryTJ1-1570ENJournal of Vibroengineering, Vol 23, Iss 7, Pp 1602-1620 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	liquid carbon dioxide cavity pressure phase change blasting carbon dioxide fracturing tube Mechanical engineering and machinery TJ1-1570
spellingShingle	liquid carbon dioxide cavity pressure phase change blasting carbon dioxide fracturing tube Mechanical engineering and machinery TJ1-1570 Yongqing Zeng Haibo Li Xiang Xia Shouchun Deng Renjie Wu Xiaohong Liu Experimental study on cavity pressure of carbon dioxide fracturing tube
description	The peak pressure and duration of high-pressure gas in the process of rock breaking by carbon dioxide fracturing will have a great impact on the fracturing effect of rock mass. For the sake of obtaining dynamic pressure response characteristic in the fracturing tube, the pressure-time curve of liquid CO2 blasting system was measured through several cavity pressure test of carbon dioxide fracturing tube. The cavity pressure test under different parameters of carbon dioxide quantity, activator quantity and thickness of energy release plate is carried out, in which TST6200 transient signal acquisition instrument, 109c12 type blasting shock wave sensor and special signal processing software system are used. The relation curve between pressure and time in the liquid CO2 fracturing tube was effectively measured and the variation law of pressure curve was analyzed. The results show that after igniting the liquid carbon dioxide fracturing tube, the cavity pressure rise slowly, then increases sharply and decays rapidly, when the pressure reaches the yield pressure limit of energy release plate, the energy release plate will be destroyed and high pressure gas will be released rapidly; the peak pressure in the CO2 fracturing system ranges from 169.1 MPa to 260.2 MPa, the duration of positive pressure is from 21.1 ms to 74.8 ms, and the peak pressure arrival time is between 13.2 ms and 67.7 ms. This paper attempts to establish the formula relationship between peak cavity pressure and thickness of energy release plate for carbon dioxide fracturing tube; the welded flat head formula, tensile failure formula and shear failure formula are used to calculate peak cavity pressure of carbon dioxide fracturing tube, in which the calculated results are compared with the measured values, the welded flat head formula severely underestimates the peak cavity pressure; conversely, the tensile failure formula slightly overestimated the peak cavity pressure; the shear failure formula can accurately reflect the peak cavity pressure of fracturing tube. The conclusions can be directly used for the design and optimization of fracturing tube by using different thickness energy release plate to control the cavity pressure of carbon dioxide fracturing tube.
format	article
author	Yongqing Zeng Haibo Li Xiang Xia Shouchun Deng Renjie Wu Xiaohong Liu
author_facet	Yongqing Zeng Haibo Li Xiang Xia Shouchun Deng Renjie Wu Xiaohong Liu
author_sort	Yongqing Zeng
title	Experimental study on cavity pressure of carbon dioxide fracturing tube
title_short	Experimental study on cavity pressure of carbon dioxide fracturing tube
title_full	Experimental study on cavity pressure of carbon dioxide fracturing tube
title_fullStr	Experimental study on cavity pressure of carbon dioxide fracturing tube
title_full_unstemmed	Experimental study on cavity pressure of carbon dioxide fracturing tube
title_sort	experimental study on cavity pressure of carbon dioxide fracturing tube
publisher	JVE International
publishDate	2021
url	https://doaj.org/article/854d64ed90824415b60955b3e6f07ea1
work_keys_str_mv	AT yongqingzeng experimentalstudyoncavitypressureofcarbondioxidefracturingtube AT haiboli experimentalstudyoncavitypressureofcarbondioxidefracturingtube AT xiangxia experimentalstudyoncavitypressureofcarbondioxidefracturingtube AT shouchundeng experimentalstudyoncavitypressureofcarbondioxidefracturingtube AT renjiewu experimentalstudyoncavitypressureofcarbondioxidefracturingtube AT xiaohongliu experimentalstudyoncavitypressureofcarbondioxidefracturingtube
_version_	1718426853856772096

Experimental study on cavity pressure of carbon dioxide fracturing tube

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