Sonic wireline dry slough barrel

Details Sonic wireline dry slough barrel Sonic wireline dry slough barrel

2008-12-29

2010-11-09

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Boring without earth removal

Combined with earth removal

C175S244000, C175S293000, C166S099000

Reexamination Certificate

active

07828079

ABSTRACT:
Slough removal assemblies and methods for removing slough from boreholes are described. A slough removal assembly containing a slough barrel is lowered into a borehole having excess slough, driven into the slough to cause the slough to enter the slough barrel, and the slough removal assembly is then removed along with the excess slough. The slough removal assembly may contain a shoe coupled to the slough barrel and configured to be driven into the slough, a retainer positioned between the shoe and the slough barrel to retain slough inside of the slough barrel, and a driving mechanism (such as a drop hammer) to drive the slough assembly into the slough. The slough removal assembly may be coupled either to a wireline system or to a drill string for insertion into and removal from the borehole.

REFERENCES:
patent: 52853 (1866-02-01), Howe
patent: 1078064 (1913-11-01), Rand
patent: 2214970 (1940-09-01), Mooney
patent: 2795395 (1957-06-01), Acker, Jr. et al.
patent: 2807439 (1957-09-01), Lipscomb
patent: 3194328 (1965-07-01), Fiore
patent: 3696873 (1972-10-01), Anderson
patent: 2003/0205408 (2003-11-01), Lee et al.

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