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

Claim 13:
14. The directional drilling system according to claim 11, wherein the abrasive particles are magnetic abrasive particles, and the actuators of the particle deflection device comprise a magnetic switch, which is configured to during the first time period establish an inhomogeneous magnetic field over a cross-section directly upstream of the first and second inlets that in the plane of said cross-section directs the abrasive particles towards the first inlet and to during the second period establish an inhomogeneous magnetic field over a cross-section directly upstream of the first and second inlets that in the plane of said cross-section directs the abrasive particles towards the second inlet,
wherein the density of the magnetic field produced in the first time period is higher in a part of the cross-section covering the first channel than in a part thereof covering the second channel, and the density of the magnetic field produced in the second time period is higher in the part of the cross-section covering the second channel than in the part thereof covering the first channel.