Visual synergy laser three-dimensional directional induction drilling periphery fracturing and anti-reflection method

• Main Authors: YANG YUQIANG, AN KANG, HAN XIWEI, CHEN XIANGJUN, SU ERLEI, CHEN HAIDONG
• Format: Patent
• Language: Chinese; English
• Published: 09.01.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a method for three-dimensionally and directionally inducing fracturing and permeability increasing of the periphery of a drilled hole through cooperation of vision and laser, and belongs to the technical field of coal seam pressure relief, permeability increasing and gas extraction promoting. Comprising the following steps that after underground drilling is completed, a laser beam induction head is used for collecting an image of a coal seam in a drilled hole; graying processing is carried out on the rock mass image of the fractured hole wall of the drill hole; analyzing coal rock fractures and determining coal seam fragile points according to the gray data of the borehole image; acquiring depth data in the Z direction of the coal rock in the image through a laser-assisted camera to obtain a point cloud data value of a coal seam fragile point in the drill hole; and a three-dimensional point cloud data model of the inner wall of the drill hole is constructed according to the three-dimen