Continuous real time drilling penetration rate recorder

Details Continuous real time drilling penetration rate recorder Continuous real time drilling penetration rate recorder

1986-03-07

1988-04-05

Smith, Jerry

Boots, shoes, and leggings

731515, E21B 4500

Patent

active

047362979

ABSTRACT:
An apparatus for providing a real-time monitoring and readout of the drilling progress of a rotary drilled deep well or oil well is connected to the wire of a standard wire line measurement wire and monitors the length paid out as a drill string descends. Simultaneously the device monitors the drill operator's controls to detect the status of drill operation. Through a computer driving both a visual and a hardcopy graphic display the operation is provided with a real-time indication of the rate of drill penetration and the rate of change of the drill penetration rate, thus providing direct information as to passage through various strata. A preferred embodiment uses a cam equipped idler wheel to measure movement of the wire line, and monitors the drill operators control switch to detect drill operation. A computer creates a video readout on a standard CRT and a tracking graph on a chart recorder.

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