Size

5 5/8”(142.8mm)

IADC

537

Bearing Type

Elastomer sealed journal bearing

Thread Connection

3 1/2 API reg pin

WOB(KN/mm)

0.45~1.0

RPM(r/min)

120~50

Applicable Formations

Medium to hard formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc

Circulation system

Mud pump