In the process of drilling in hard, extremely hard formations, it can provide excellent drilling performance and durability. We continuously improve the impregnated diamond block and crown shape for enhancing drilling performance and reducing cost.
12-1/4" I1508/M843
◆Body Material: Tungsten carbide is applied to carcass with the features of flushing resistance and wear resistance.
◆Crown Shape: Design of shallow cone parabola crown shape.
◆Central Flow Channel: Radiate water channel design.
◆Cutting Tooth: Sinter molding by self-sharpening diamond block and surface inserting, PDC material is applied at the core.
◆Gauge Protection: length of gauge protection is 6”.
◆Connection Method: 6-5/8” API Reg.
It was applied in Yuanba gas field with Zhenzhuchong formation via downhole motor + drill pad to make compound drilling. The single bit footage is 191.32m and the average penetration rate is 1.10 m/h.
8-1/2" I12/M843
◆Body Material: Tungsten carbide is applied to carcass with the features of flushing resistance and wear resistance.
◆Crown Shape: Design of shallow cone parabola crown shape.
◆Central Flow Channel: Radiate water channel design.
◆Cutting Tooth: Sinter molding by self-sharpening diamond block and surface inserting, PDC material is applied at the core.
◆Gauge Protection: length of gauge protection is 4”.
◆Connection Method: 4-1/2”API Reg.
It was applied in Moxi well with Canglangpu formation via downhole motor + drill pad to make compound drilling. The lithology is argillaceous siltstone and silty mudstone. The single bit footage is 127.25m and the average penetration rate is 1.15 m/h.