An experimental method and experimental device for simulating laser drilling rock breaking

A technology of drilling and breaking rocks and experimental methods, which is applied in thermal drilling, earthwork drilling, wellbore/well components, etc. It can solve the problems of low accuracy of laser spot adjustment, difficulty in ensuring experimental accuracy, and rough experimental methods. To achieve the effect of simple and intelligent adjustment, real experiment, and environmental protection of the device

Inactive Publication Date: 2016-08-24
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Application Information

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Problems solved by technology

However, the experimental equipment required for the theoretical research of laser drilling and rock breaking is not complete, and the experimental methods are also very rough, so it is difficult to guarantee the accuracy of the experiment.
The commonly used laser rock-breaking experimental device has the following deficiencies: the simulation is not realistic enough, the laser spot adjustment accuracy is not high, and the environment is polluted

Method used

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  • An experimental method and experimental device for simulating laser drilling rock breaking
  • An experimental method and experimental device for simulating laser drilling rock breaking
  • An experimental method and experimental device for simulating laser drilling rock breaking

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1: simulated laser nitrogen drilling, comprising the following steps:

[0037] (1) Put the rock sample into a transparent sealed box, limit the displacement of the rock sample in the X-axis direction and the Y-axis direction, use the height sensor to measure and calibrate the surface height of the rock sample;

[0038] (2) Determine the breaking point of the rock sample, the interval between the breaking points is 35 mm, adjust and calibrate the position of each breaking point, and avoid the breaking point on the crack of the rock sample;

[0039] (3) Apply pressure to the rock sample along the X-axis direction and the Y-axis direction so that the rock sample is compressed to generate biaxial stress to simulate the stress of the formation rock, and then seal the sealing box;

[0040] (4) Introduce nitrogen gas into the sealed box from the air inlet of the sealed box, and pump air from the air outlet of the sealed box at the same time. The nitrogen is filled w...

Embodiment 2

[0041] Embodiment 2: simulated laser air drilling, comprising the following steps:

[0042] (1) Put the rock sample into a transparent sealed box, limit the displacement of the rock sample in the X-axis direction and the Y-axis direction, use the height sensor to measure and calibrate the surface height of the rock sample;

[0043] (2) Determine the breaking point of the rock sample, the interval between the breaking points is 35 mm, adjust and calibrate the position of each breaking point, and avoid the breaking point on the crack of the rock sample;

[0044] (3) Apply pressure to the rock sample along the X-axis direction and the Y-axis direction so that the rock sample is compressed to generate biaxial stress to simulate the stress of the formation rock, and then seal the sealing box;

[0045] (4) Fresh air is introduced into the sealed box from the air inlet of the sealed box, and at the same time, the air is pumped out from the air outlet of the sealed box. The fresh air ...

Embodiment 3

[0046] Embodiment 3: simulated laser helium drilling, comprising the following steps:

[0047] (1) Put the rock sample into a transparent sealed box, limit the displacement of the rock sample in the X-axis direction and the Y-axis direction, use the height sensor to measure and calibrate the surface height of the rock sample;

[0048] (2) Determine the breaking point of the rock sample, the interval between the breaking points is 35 mm, adjust and calibrate the position of each breaking point, and avoid the breaking point on the crack of the rock sample;

[0049] (3) Apply pressure to the rock sample along the X-axis direction and the Y-axis direction so that the rock sample is compressed to generate biaxial stress to simulate the stress of the formation rock, and then seal the sealing box;

[0050] (4) Helium gas is introduced into the sealed box from the air inlet of the sealed box, and at the same time, the air is pumped out from the air outlet of the sealed box, and the he...

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Abstract

The invention provides an experiment method for simulating laser drilling and rock breaking. Biaxial stress is used for simulating stratum stress, a direction adjusting assembly is used for controlling the irradiation position and height of a laser beam and changing the size of spots, irradiated on the surface of a rock sample, of the laser beam, circulating gas is used for simulating the gas circulation atmosphere in laser drilling, and a gas collecting assembly is used for collecting the circulating gas after the experiment so that the physical and chemical reaction of laser-broken rock can be analyzed. Correspondingly, the invention further provides an experiment device for simulating laser drilling and rock breaking. The experiment device comprises a console, an operation desk, the direction adjusting assembly, a laser cutting head fixed to the direction adjusting assembly, a hydraulic system, a sealing unit and a gas collecting unit communicated with a sealed box. According to the experiment method, laser drilling and rock breaking in the stratum can be simulated, and the physical and chemical reaction of the laser-broken rock can be analyzed through the circulating gas; the experiment device is safe and environmentally fixedly; the laser spots can be adjusted more easily and more intelligently, and multiple circulating gas experiment samples can be obtained at the same time.

Description

technical field [0001] The invention relates to an experimental method and an experimental device for studying the mechanism of laser breaking rocks, in particular to an experimental method and an experimental device for simulating laser drilling and breaking rocks. Background technique [0002] With the rapid development of science and technology, laser drilling has attracted more and more attention because of its high efficiency and environmental protection. However, the experimental devices required for the theoretical research of laser drilling and rock breaking are not complete, and the experimental methods are also very rough, so it is difficult to guarantee the accuracy of the experiment. The commonly used laser rock-breaking experimental device has the following shortcomings: the simulation is not realistic enough, the laser spot adjustment accuracy is not high, and the environment is polluted. Therefore, it is an urgent problem to be solved in the theoretical resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/14E21B47/00
Inventor 文国军杨玲芝王玉丹吴川张奥东谢辉黄雷白江浩路桂英付先成韩磊
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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