Downcrowdable telescopic augering apparatus

Details Downcrowdable telescopic augering apparatus Downcrowdable telescopic augering apparatus

1995-06-02

1997-05-20

Smith, Scott A.

Tool driving or impacting

With vehicle support for drive

173 27, 173 39, 173147, 173193, E21C 500

Patent

active

056304773

ABSTRACT:
A downcrowdable telescopic augering apparatus including a vehicle having a boom which carries a cradle in which a kelly tube is slidably mounted and on which a kelly winch and a service winch are mounted. A winch management system oversees the operation of said winches to prevent the kelly cable and the service cable from being broken or becoming slack when the kelly tube moves with respect to the cradle. A bottomhole kelly cable arresting system arrests the rotation of the drum of the kelly winch when the kelly cable is slack.

REFERENCES:
patent: 3690387 (1972-09-01), Dixon
patent: 3994350 (1976-11-01), Smith et al.
patent: 4226447 (1980-10-01), Brown
patent: 4303130 (1981-12-01), Bonca
patent: 4645084 (1987-02-01), Deike
patent: 4860837 (1989-08-01), Robert
patent: 4877091 (1989-10-01), Howell, Jr.
patent: 5396964 (1995-03-01), Shellhorn et al.

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