John C. Zimmerman | Researchain

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Featured researches published by John C. Zimmerman.

Archive | 1977

Valve closing method and apparatus for use with an oil well valve

Gerald D. Jackson; Jim R. Williamson; John C. Zimmerman

Archive | 1984

Hydraulic set high temperature isolation packer

John C. Zimmerman

Archive | 1979

Oil well testing string bypass valve

Thomas E. McGraw; John C. Zimmerman

Archive | 1992

Differential pressure operated circulating and deflation valve

Jeffrey S. Walter; James C. Tucker; John C. Zimmerman

Archive | 1983

Ball type shut in tool

John C. Zimmerman; William Paul Bellenger

Archive | 2003

Anti-rotation device for cementing plugs

Anthony M. Badalamenti; Charles A. Butterfield; Donald M. Garrett; Steven L. Holden; Ronald J. Holubec; Seth R. Moore; Henry E. Rogers; Michael D. Stevens; Earl D. Webb; John C. Zimmerman

Archive | 1984

Ball type shut in tool for wells

John C. Zimmerman; William Paul Bellenger

Archive | 2003

Anti-rotation spray for cementing plugs

Charles A. Butterfield; Henry E. Rogers; Seth R. Moore; Donald M. Garrett; Ronald J. Holubec; Earl D. Webb; Michael D. Stevens; Steven L. Holden; John C. Zimmerman; Anthony M. Badalamenti

Archive | 2003

Verdrehsicherungsspray für Zementierstopfen

Charles A. Butterfield; Henry E. Rogers; Seth R. Moore; Donald M. Garrett; Ronald J. Holubec; Earl D. Webb; Michael D. Stevens; Steven L. Holden; John C. Zimmerman; Anthony M. Badalamenti

Archive | 2003

Verdrehsicherungsvorrichtung für Zementierstopfen

Anthony M. Badalamenti; Charles A. Butterfield; Donald M. Garrett; Steven L. Holden; Ronald J. Holubec; Seth R. Moore; Henry E. Rogers; Michael D. Stevens; Earl D. Webb; John C. Zimmerman

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