Polycrystalline diamond compact and PDC drill bit

• Main Author: TONG LIFENG
• Format: Patent
• Language: Chinese; English
• Published: 29.12.2020
• 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 polycrystalline diamond compact comprises a hard alloy base and a diamond layer, one side of the diamond layer is connected with the first side of the hard alloy base, and a cross-shaped cutting protrusion is formed on the surface of the side, away from the hard alloy base, of the diamond layer in a protruding mode. The width of each cutting protrusion is gradually reduced from the center of the diamond layer to the outer edge, a cutting face inclined relative to the radial plane of the diamond layer is formed between every two adjacent cutting protrusions, and the cutting faces are gradually inclined from the center of the diamond layer to the outer edge. The four-quadrant artificial polycrystalline diamond teeth distributed on the PDC drill bit are adopted, so that the four-quadrantartificial polycrystalline diamond teeth can easily enter a stratum, the rock breaking efficiency is high, the mechanical drilling speed is effectively increased, the drill bit mud pack is effectivelyreduced, and a better roc