Slant hole directional drilling tool - with drill collar carrying cam variably oriented relative an enlarged cutter on roller cone bit

Slant hole directional drilling tool - with drill collar carrying cam variably oriented relative an enlarged cutter on roller cone bit

A slant hole directional drilling tool includes a drilling tool includes a drill collar carrying a bit having roller cone cutters of which one is of larger dia. than the remainder and is located in predetermined angular relationship to a lobe on the collar which contacts the low side of the borehole...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MCMAHON, HARVEY SAMUEL, HUNTINGTON BEACH, CALIF. (V.ST.A.)
Format: Patent
Sprache:eng ; ger
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:A slant hole directional drilling tool includes a drilling tool includes a drill collar carrying a bit having roller cone cutters of which one is of larger dia. than the remainder and is located in predetermined angular relationship to a lobe on the collar which contacts the low side of the borehole each revolution and cams the bit upwardly to cause the enlarged cutter to change the direction of the borehole.