๐”– Bobbio Scriptorium
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Gauges for measuring internal screw threads

โœ Scribed by S. I. Zhitnitskii; L. M. Natapov; L. P. Shatsman; A. V. Shpichak


Publisher
Springer US
Year
1978
Tongue
English
Weight
287 KB
Volume
21
Category
Article
ISSN
0543-1972

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A method and apparatus for installing casing hangers in a wellbore using an externally activated gripping system is described. The purpose is to provide an annulus seal that can also be released and the hanger position adjusted. It appears to comprise an annular bush which is compressed radially by