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

Claim 1:
2. The method according to claim 1, wherein said varying of the concentrations of the abrasive particles in the stream of drilling fluid mixed with abrasive particles comprises:
during the first time period, deflecting into the first channel a first majority of all abrasive particles in the stream that pass through the supply channel outlet, and
during the second time period following the first time period, deflecting into the second channel a second majority of all abrasive particles in the stream that pass through said supply channel outlet, and
subsequently passing said stream from the first and second outlets into said one or more abrasive jet nozzles,, wherein the difference between a flow resistance to said drilling fluid mixed with abrasive particles in said first channel and a flow resistance to said drilling fluid mixed with abrasive particles in said second channel results in a difference between a first velocity at which said first majority flows through said first channel and a second velocity at which said second majority flows through said second channel,, wherein said difference between said first and second velocities is such that, downstream of the first and second outlets,, the first and second majority deflected into the first channel during the first time period and deflected into the second channel during the second time period, together with drilling fluid passed into the first and second channel during the first and second time period, respectively, are combined to form the first stream portion, and, minorities of abrasive particles not being deflected together with drilling fluid passed into the first and second channel during the second and first time period, respectively, are combined to form the second stream portion.