ASSEMBLY AND METHOD FOR WIDE CATCH OVERSHOT

A grapple for use in an overshot has a tension ring with a reduced helix diameter. However, the helix diameter is not reduced on either sides of the control finger slot to allow the grapple to remain in contact with the control. In the alternative, a composite helix member may be utilized. Another e...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SALDANA, Jose, STREATER, James, R., Jr, HERNANDEZ, Daniel., Jr
Format:	Patent
Sprache:	eng ; fre ; 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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