Percussion actuated core sampler

Details Percussion actuated core sampler Percussion actuated core sampler

1983-06-30

1985-05-21

Myracle, Jerry W.

Boring or penetrating the earth

With means movable relative to tool to receive, retain, or...

Core-retaining or severing means

175 58, 175246, 175296, 7386445, E21B 2500, E21B 4902

Patent

active

045180512

ABSTRACT:
The present invention provides a percussion actuated wire line sampler for use in a drill string. The sampler includes a core barrel adapted to be inserted into the drill string and to be freely movable therein. A hydraulic percussion device (16) also insertable and freely movable in the drill string is connected to the core barrel. A downhole mud turbine (20) is provided and is responsive to drilling mud pressure to actuate the percussion device to drive the core barrel out of the end of the drill string into the material to be sampled.

REFERENCES:
patent: 2005989 (1935-06-01), Burt
patent: 2109197 (1938-02-01), Humason
patent: 2170716 (1939-08-01), Higgins, Jr.
patent: 2345739 (1944-04-01), Fisher
patent: 2557925 (1951-06-01), Stokes
patent: 2623733 (1952-12-01), Sewell
patent: 2758817 (1956-08-01), Bassinger
patent: 2837315 (1958-06-01), Burns, Jr. et al.
patent: 3552500 (1971-01-01), Peterson
patent: 3807512 (1974-04-01), Pogonowski et al.
patent: 4002213 (1977-01-01), Sweeney
Fugro Ltd. Letter, May 14, 1982, with one page attachment.
Ocean Industry article dated Dec. 1982, one page.
General Description of Hydraulic Breaker, one page.

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