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WEB WILSON OIL TOOLS Inc
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WEB WILSON OIL TOOLS Inc
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Application filed by WEB WILSON OIL TOOLS IncfiledCriticalWEB WILSON OIL TOOLS Inc
Application grantedgrantedCritical
Publication of FR1236868ApublicationCriticalpatent/FR1236868A/fr
E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
E21B19/16—Connecting or disconnecting pipe couplings or joints
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FR806328A1959-02-201959-09-29Perfectionnements apportés aux garnitures ou mors de serrage, notamment pour l'industrie pétrolifère
ExpiredFR1236868A
(fr)