Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element
Patent
1980-09-12
1982-06-29
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
With fluid conduit lining or element
175312, E21B 1060
Patent
active
043368506
ABSTRACT:
A strainer is shown for use with a downhole tool through which drilling fluid is circulated during the drilling of deep oil wells and the like. The strainer provides a plurality of narrow slots which prevent the passage of material therethrough that might be entrained with the fluid and which otherwise would plug ports or nozzles or restrict flow passages below the strainer.
REFERENCES:
patent: Re23416 (1951-10-01), Kinnear
patent: 2017834 (1935-10-01), Hummel
patent: 2549420 (1951-04-01), Camp
patent: 2760758 (1956-08-01), Yancey et al.
patent: 3131779 (1964-05-01), Rowley et al.
Christensen Inc.
Falk Joseph
Franklin Rufus M.
Novosad Stephen J.
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