Drill string motion detection for bit depth calculation

Details Drill string motion detection for bit depth calculation Drill string motion detection for bit depth calculation

1992-04-20

1993-12-28

Envall, Jr., Roy N.

Boots, shoes, and leggings

364562, 731515, G01V 318

Patent

active

052745520

ABSTRACT:
A motion detector is incorporated on a drilling rig for detection of drill string motion. An output of the motion detector provides an enabling signal for conversion of block height data to bit depth drill string velocity or penetration rate without errors associated with block motion during static drill string conditions.

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