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In model oil drilling assemblies pressure pulses of the drilling fluid (mud) are applied to transfer measured data from the downhole motor and the drilling bit to the operator at the surface. The presure pulses are generated by the pulser. This device is placed slightly above the motor and pinches off a part of the free cross section of the drillpipe in the rhythm of the data flow. Presently it has...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.