Rate of penetration on deep wells
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20 Jun Rate of penetration (ROP) logs are recorded at the wellsite as the well The geolograph, or drilling recorder, mechanically monitors depth The ROP log is the first source of data that can be used to correlate to nearby wells.
Description: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. Description This is a continuation of co-pending application Ser. The following delineated examples of these devices and systems are representative of the relevant prior art:
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