Petroleum engineer international - Vol. 57, No. 10 (Sep. 1985) ; 129 p.

Changing drilling technology- what three experts say -- British gas meets morecambe field challenges / W.B. Bleakley -- Rotating liner hanger helps solve cementing problems / Juan A. García -- Uinta basin rig sets new drilling records / Michael Cooney -- How to evaluate strip-in performance of ram blowout preventer equipment / Marvin Jones -- What's new in drilling -- Underreaming: old method with good prospects / Alain Roblin.

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