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Pushing small-diameter tubing down a well’s production string to facilitate workover operations was first tried in the late 1960s.
Overpressured shales are a driller’s nightmare: insufficient mud weight invites a blowout, excess mud weight slows drilling and can damage the formation.
Better methods for detecting and evaluating thin beds have turned marginal reservoirs into attractive prospects and revealed previously undetected pay.
At last, their research is producing relationships usable by log interpreters. We trace the whole story, from Archie to the present day.
Three-dimensional (3-D) seismic surveys take the lion’s share of the world seismics market, thanks to recent improvements in acquisition efficiency.
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