Well drilling tool

Details Well drilling tool Well drilling tool

1979-11-26

1981-04-07

Purser, Ernest R.

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

175228, 415104, 415113, 415502, E21B 402

Patent

active

042600324

ABSTRACT:
There is disclosed a turbodrill having an axial thrust bearing section which is contained within a lubricant chamber arranged within an annular space between the case and shaft of the turbodrill above the turbine section, and which is defined between means sealing between the shaft and the case which, in use of the turbodrill, are above the drilling fluid circulating therethrough.

REFERENCES:
patent: 1270808 (1918-07-01), Franklin
patent: 2592519 (1952-04-01), Postlewaite
patent: 3741321 (1973-06-01), Slover et al.
patent: 4019591 (1977-04-01), Fox
patent: 4080094 (1978-03-01), Jeter

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