Abstract
SEG’s May survey of oil companies and domestic seismic contractors indicated a seasonal increase in seismic exploration activity during the month — the first reversal of the downtrend which began in September 1975. SEG’s count of seismic crews active in the U.S. and U.S. waters during May is 247, up nine crews from the 238 reported in April. This increase compares with a three‐crew increase during the same two months in 1975 (283 to 286).
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