Balling-resistant PDC drill provided with penetrating pits in flow passage surface

• Main Authors: LIN MIN, REN HAITAO, CHEN LIAN, ZHOU CHUNXIAO, YANG YINGXIN, QIN XIAOQING, BAO ZEJUN, WANG XIYONG
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2014
• 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 utility model discloses a balling-resistant PDC drill provided with penetrating pits in the flow passage surface. The balling-resistant PDC drill comprises a drill body, wherein a screwed joint connected with a drill rod is arranged at the lower part of the drill body; a plurality of blade wings...