20220625 D customer provided information on drilling wells in Yongchuan block, with 16-inch 6-blade drill bits. All 1613BIM-1 0.4 30 pieces were used in the back row, and the main teeth were XM53. The drill bit penetrated Shaximiao and Lianggaoshan strata and entered the artesian well, until it was about 100 meters away from the bottom of the artesian well, because the drill was lifted in advance for equipment maintenance. Total footage 650m.