DEVICE AND METHOD FOR MAKING A SLOT IN AN UNDERGROUND FORMATION

A cutting device for making a slot adjacent to a well traversing an underground formation comprises a chain saw arm (15) which carries an endless chain (24) with cutting elements (25). In use the chain (24) is rotated around the arm (15) while the arm (15) is gradually hinged from a longitudinal tow...

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Bibliographic Details
Main Authors WORRALL, ROBERT, NICHOLAS, ROSS, BRENT, REYNOLDS
Format Patent
LanguageEnglish
French
German
Published 21.05.1997
Edition6
Subjects
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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Summary:A cutting device for making a slot adjacent to a well traversing an underground formation comprises a chain saw arm (15) which carries an endless chain (24) with cutting elements (25). In use the chain (24) is rotated around the arm (15) while the arm (15) is gradually hinged from a longitudinal towards a lateral position relative to the wellbore thereby inducing the cutting elements (25) to cut a slot through the formation (2) and well casing or liner (5), if present.
Bibliography:Application Number: EP19950929072