An Intrinsically Safe Dry Ice Powder Static Pneumatic Fracturing Simulation Device and Its Application Method

Abstract

The invention discloses an intrinsically safe dry ice powder static pneumatic fracturing simulation device, which comprises an acrylic block, a cracking hole is opened on the acrylic block, a cracking tube is arranged in the cracking hole, and dry ice powder, a cracking agent and an electric shock are arranged in the cracking tube. The heating cable and the upper opening of the cracking tube are sealed by a sealing cap. The sealing cap includes a nut part and a connecting part integrally connected. The connecting part and the upper thick part are connected by threads. There are two screw holes on the nut part. The lower part of the hole is provided with a gasket, and the screw is screwed into the screw hole to squeeze the gasket. One end of the heating wire is connected to the electric heating cable, and the other end is connected to the power supply of the electric heating cable. One end of the cracking wire is inserted into the cracking agent, and the other end is Connected to cracker activation controller. The invention also discloses a method for using the intrinsically safe dry ice powder static pneumatic fracturing simulation device. The present invention provides an intrinsically safe static pneumatic fracturing simulation device for dry ice powder and a use method thereof, which can achieve a relatively ideal fracturing effect, and are highly safe and easy to operate.

Description

technical field [0001] The invention relates to an intrinsically safe dry ice powder static pneumatic fracturing simulation device and a use method thereof, belonging to the technical field of pneumatic fracturing and the field of blasting experiment teaching. Background technique [0002] In recent years, carbon dioxide fracturing has gradually emerged. High-energy gas fracturing technology first appeared in the United States in the 1860s. This technology uses the shock wave and explosive gas generated by the combustion of propellant (explosive) powder in a short period of time to fracture rock mass. At first, explosive fracturing of reservoirs was carried out by explosives such as TNT, but it was gradually eliminated due to the large damage caused by the explosion to the wellbore and formation. Instead, the deflagration of propellant (explosive) explosives such as nitrocellulose was used to implement high-energy gas fracture. In recent years, a series of high-energy prop...

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Problems solved by technology

[0003] However, whether it is controlled blasting technology or high-energy gas fracturing technology, Class I and Class II civilian explosives are currently used to varying degrees (the exothermic drug used in the current carbon dioxide phase change expansion fracturing technology belongs to Class II civil explosives), Did not fundamentally solve the problem of safety and impact disturbance

Under the current situation, explosive blasting is difficult to enter the school experimental teaching due to the danger and pollution to the environment.

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