Petroleum engineer international - Vol. 58, No. 1 (Jan. 1986) ; 84 p.

Hard times bring out high tech in oil patch -- Advanced heavy-oil EOR technologies hold promise / Joseph J. Dailey -- Predicting fracture gradients for abnormally pressured zones / W. David Constant -- The how and why of downhole safety valves / W.B. Bleakley -- Comparison of tubular tensile tests to classical laboratory results / J.D. Garber -- Green canyon wells require well- engineered drilling programs / Jim Corley -- Rig maintenance : an expensive, but necessary task / Steven D. Moore.

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