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USGS scientists prepare to collect a full-waveform sonic log

By Communications and Publishing
USGS scientists J. Alton Anderson and Dennis W. Risser prepare to collect a full-waveform sonic log from a 1,000-foot deep strat
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Detailed Description

USGS scientists J. Alton Anderson and Dennis W. Risser prepare to collect a full-waveform sonic log from a 1,000-foot deep stratigraphic test hole drilled by the Pennsylvania Geological Survey at the edge of a Marcellus Shale production well pad in Lycoming County, PA.

Sources/Usage

Public Domain.

Public domain