Importance

Loading Importance Indicators...

Abstract

A video system measures the position of the traveling block of a drilling rig to determine borehole depth and the rate of drill bit penetration. A television camera is arranged to track the vertical movement of the traveling block of a drilling rig between its uppermost and lowermost positional limits. An encoding unit is connected to the television camera. The output of the encoder indicates the block's position along its vertical path of movement. The output signal is processed to provide information such as borehole depth and drill bit penetration rate. The output may be in the form of an analog output to a dial indicator, a chart recorder or the like. The system is not subject to fouling or mechanical failure and the system, including the input sensor, may be located in its entirety remotely from the drilling rig.

Loading the Abstract Image...

First Claim