8月31日,由渤海钻探井下作业公司施工的岔33-152X井自增压多级起爆射孔一举成功,创造了国内最大夹层自增压射孔新纪录。岔33-152X井井斜49.04°,井深3 253 m,实射4 m,夹层415.5 m,刷新了国内单井夹层跨度最大纪录。由于该井井斜过大,超过30°,不适用多级脉冲射孔,决定 August 31, Bohai Drilling Downhole Operations Construction Company fork 33-152X self-pressurized multistage burst perforation successfully in one fell swoop, creating a new record of the largest mezzanine self-pressurizing perforation. The wellbore of Well 33-152X has a well inclination of 49.04 °, a well depth of 3 253 m, a real shot of 4 m and a mezzanine of 415.5 m, setting the record of maximum single-span interlayer span in China. Due to the well being inclined too large, more than 30 °, multi-stage pulse perforation is not applicable