Rock three-axis fracturing device

Abstract

The invention discloses a rock three-axis fracturing device. The rock three-axis fracturing device comprises a bracket, a main cavity, a pushing and conveying mechanism, horizontal force application mechanisms, rotary pressing rods and a top force application mechanism, wherein the main cavity is fixedly connected onto the bracket; the main cavity is provided with a communicating cavity for containing a rock to be detected; the pushing and conveying mechanism is arranged at the bottom of the bracket; the pushing and conveying mechanism comprises a first hydraulic cylinder and a supporting plate; the two horizontal force application mechanisms are fixedly connected onto two side faces, which are vertical to each other, of the main cavity respectively; each horizontal force application mechanism comprises a fixed block and a second hydraulic cylinder; the top of a piston rod of each second hydraulic cylinder is fixedly connected with a pressing block and each pressing block is provided with an electromagnetic sensor; the two rotary pressing rods are arranged on side faces, which are opposite to the horizontal force application mechanisms, on the main cavity; each rotary pressing rod comprises a screw rod and a handle; the top force application mechanism comprises a top plate, a third hydraulic cylinder and a pressing plate; the top plate is arranged at the top of the main cavity and the pressing plate is fixedly connected with the top of a piston rod of the third hydraulic cylinder.

Description

technical field [0001] The invention relates to a rock triaxial fracturing device, which belongs to the technical field of rock and rock mechanics and engineering. Background technique [0002] Hydraulic fracturing has been used as the main measure to increase the production of oil and gas wells and the injection volume of water injection wells. The production of low-permeability oil fields in China and the production obtained through hydraulic fracturing are also gradually increasing, especially now that the oil industry is in a downturn. The wide application and in-depth study of hydraulic fracturing technology are expected to inject new vigor and vitality into the oil industry, and the optimal implementation of hydraulic fracturing technology and breakthroughs in key technologies will bring immeasurable prospects to the oil industry. Indoor simulation experiment is an effective research method to understand the law of hydraulic fracture initiation and propagation. [000...

AI Technical Summary

Problems solved by technology

[0003] Most of the current true triaxial hydraulic fracturing equipment cannot apply layer stress and simulate real formation stress changes

In the process of hydraulic fracturing, the fracture trend is judged in real time. The current equipment is basically based on acoustic emission to monitor the fracture, judge the fracture trend, and need to perform corresponding post-processing. Towards, moreover, the mechanization degree of the current equipment is low, it needs to consume a lot of manpower, so that the experiment efficiency is low

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