Patent ID: 11879335
Assignee: CANOPUS DRILLING SOLUTIONS HOLDING B.V.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 18:
19. The directional drilling system according to claim 11, wherein the drill bit is a mechanical drill bit, further comprising:
one or more mechanical cutters, arranged on the bit face,
one or more wash nozzles arranged at respective adjacent azimuthal positions different from those of the one or more abrasive jet nozzles,
a strainer, arranged inside the intermediate space of the drill bit and rotating along with the drill bit, configured to direct the abrasive particles in said stream as received through the bit fluid inlet port into the abrasive jet nozzles, while passing drilling fluid within said stream into both the abrasive jet nozzles and the wash nozzles.