Oil well service tool

Details Oil well service tool Oil well service tool

1982-03-19

1983-11-08

Swisher, S. Clement

Measuring and testing

Instrument casing

33304, 73151, G01D 1124

Patent

active

044135165

ABSTRACT:
Apparatus for reducing landing shock for instruments run into earth boreholes through drill string bores and to maintain azimuthal orientation being protected with enclosing structure. An instrument package has a depending spear point for engaging a baffle in the drill string. The spear point encloses a spring and fluid damped shock absorber. The instrument package further includes a second internal fluid damped shock absorber and a spring type rotary shock absorber for the measuring instrument.

REFERENCES:
patent: 1960038 (1934-05-01), Williston et al.
patent: 2819537 (1958-01-01), Peebles
patent: 3653468 (1972-04-01), Marshall
patent: 4141153 (1979-02-01), Nelson

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