Drilling Bit selection for soft and hard staggered formations
2022-04-21 17:57:55
Drilling Bit selection for soft and hard staggered formations
In soft and hard staggered formations, generally we should choose to increase the wedge tooth or the height of the conical spherical tooth in the insert bit, so as to have a higher ROP in the softer formation and ensure the drill ability in the hard formation. However, the WOB and rotational speed of water well drilling rigs should be different during drilling. When drilling in soft formations, the rotational speed can be increased and the WOB can be reduced. In the well sections of hard formations, the WOB should be increased and the rotational speed should be reduced to achieve better geological conditions. economic effect.
