Petroleum engineer international - Vol. 56, No. 3 (Mar. 1984) ; 92 p.

Deep drilling in U.S. declines by 52% in 1983 / Rich McNally -- Ultradeep drilling falls to 16-year low -- Deep well map -- How loading affects tubular thread shoulder seals / Max Raulins -- Mobil outlines lower mobile bay activities / Harrison T. Brundage -- International land rig locator.

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