Laser rock breaking method and device

A rock-breaking device and laser technology, which are applied in drilling equipment and methods, earth-moving drilling, drilling equipment and other directions, can solve the problems of high energy, low laser rock-breaking efficiency, and high required cost, and achieve low economic cost and preparation. Short time and high efficiency

Pending Publication Date: 2022-01-07
PETROCHINA CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the laser rock breaking technology in the prior art requires a lot of energy, th

Method used

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  • Laser rock breaking method and device
  • Laser rock breaking method and device

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] Such as figure 1 As shown, the application provides a laser rock breaking method, comprising the following steps:

[0041] S102: judging the chemical composition of the pre-collected rock sample;

[0042] S104: determining the acid-base type of the rock sample according to the chemical composition of the rock sample;

[0043] S106: Configure corresponding chemical solutions according to the acid-base type of the rock sample;

[0044] S108: drop the c...

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Abstract

The invention provides a laser rock breaking method and device. The method comprises the following steps that chemical components of a pre-collected rock sample are judged; the acid-base type of the rock sample is determined according to the chemical components of the rock sample; corresponding chemical solution is prepared according to the acid-base type of the rock sample; the chemical solution is dripped onto the surface of the rock sample, and the rock sample is enabled to be in full contact with the chemical solution; if no crack appears on the surface of the rock sample, the amount and/or concentration of the chemical solution is changed to make the crack appear on the surface of the rock sample; and the cracked surface of the rock sample is continuously irradiated by utilizing a high-energy laser beam of a laser. According to the laser rock breaking method and device, the chemical solution is adopted to perform crack prefabrication on the rock sample, the prefabrication operation is simple, the preparation time is short, the economic cost is low, the crack development and propagation speed can be effectively increased, the laser rock breaking efficiency is further improved, and the application of the laser rock breaking technology in actual drilling is promoted.

Description

technical field [0001] The invention relates to the field of drilling engineering, in particular to a laser rock breaking method and a laser rock breaking device. Background technique [0002] With the rapid economic development, the role of oil and gas resources in social development is becoming more and more important, but problems such as insufficient oil and gas reserves and increasing difficulty in mining always exist. At present, the depth of oil and gas exploration and development continues to increase, but deep strata, complex geology, high rock hardness and strong wear resistance make rock breaking technology face great challenges. With the increasing complexity of wellbore structures and wellbore trajectories, drilling has become very difficult. The rock-breaking efficiency and ROP of traditional drilling methods have been greatly reduced, and the drilling speed, quality and efficiency have also declined. Therefore, the development of efficient drilling and rock b...

Claims

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Application Information

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IPC IPC(8): E21B7/00E21B7/14E21B47/00G01N3/58
CPCE21B7/00E21B7/14E21B47/00G01N3/58
Inventor 石永军李县法汪海阁纪国栋罗文婵葛云华王晓岗周波王灵碧毕文欣
Owner PETROCHINA CO LTD
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