Odfjell Technology Invest Ltd

Jonas Solem

A method, apparatus and machine readable instructions for controlling a downhole tool are provided. An operational parameter of a drill string associated with the downhole tool is sensed to detect a number of pulses of the operational parameter within a time window having a predetermined duration. The pulses correspond to a period during which the operational parameter deviates from a baseline value and the detection of the number of pulses accommodates at least one of a variable pulse duration and a variable pulse magnitudes within the time window. A control command to control the downhole tool is executed depending on the detected number of pulses of the operational parameter.

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Dubai, United Arab Emirates

Jonas Solem