Perforating method

• Main Authors: LI JUNLU, WU JINWEI, SJONG, LIANG CHENGCHUN, FENG YONGCHAO, WANG ZHILEI
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2024
• 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 belongs to the technical field of oil extraction of oil and gas wells, and particularly relates to a perforation method which comprises the following steps: in a perforation operation process, when a perforation gun descends to a perforation section, an oil pipe performs pressure perforation so as to complete perforation operation; the size and ammunition amount of the perforating gun are designed as follows: the maximum outer diameter of the perforating gun is determined according to the inner diameter of a casing hanger and the inner diameter of a suspension casing; according to the maximum outer diameter of the perforating gun, the inner diameter of the suspension casing and the well deviation data, the maximum length of the perforating gun passing through the casing rigidly is calculated, and the maximum length of the perforating gun is obtained; the standard type of the perforating gun is determined according to the maximum outer diameter of the perforating gun; the perforating gun explosiv