Oil well service tool assembly

作者: William G Green

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参考文章(6)
John H Kirby, Hydraulic side wall coring tool ,(1946)
Harley E Hylbak, Well casing soil sampler ,(1950)
Douglass M Stewart, Wire line hydraulic pulling tool ,(1954)
White Morris B, Green William G, Pritchard Vernon M, Fishing tool assembly ,(1957)
John S Page, Well cementing apparatus ,(1953)