Job Description:

• 1) Measures sonar, electrical, or radioactive characteristics of earth formations in oil- or gas-well boreholes to evaluate productivity of oil- or gas-bearing reservoirs, using sonic, electronic, or nuclear measuring instruments: Signals HOISTING ENGINEER to lower instruments into well, observing oscillograph and meters on control panel to verify operating condition of instruments.

• 2) Turns dials on control panel to adjust instrument for specified recording and starts recording device when instruments reach bottom of borehole.

• 3) Prints copies of recorded graphs in truck darkroom.

• 4) Interprets graphs for customer to indicate identity, porosity, oil- or gas-bearing content, and productivity of geological formations.

• 5) Measures borehole diameters, direction of borehole, and inclination of geological strata, using microcalipers, directional indicators, and dipmeters.

• 6) May be designated according to measuring instruments used as Acoustical Logging Engineer; Nuclear Logging Engineer.