Well completion tool and process

An oil well tool including a release mechanism, a splined torque transmitting driver, a liner, an under reamer and a drill bit. Circulation in a passageway through the tool provides drilling foam or fluid to the drill bit and under reamer. A restriction below the under reamer provides pressure to hy...

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Bibliographic Details
Main Authors DOBSON; RICHARD M, HERNDON; JEFFEREY D, HUDSON; LEO D
Format Patent
LanguageEnglish
Published 02.07.1996
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:An oil well tool including a release mechanism, a splined torque transmitting driver, a liner, an under reamer and a drill bit. Circulation in a passageway through the tool provides drilling foam or fluid to the drill bit and under reamer. A restriction below the under reamer provides pressure to hydraulically force cone arms of the under reamer outwardly. A valve mechanism located within a stinger subassembly within the liner controls communication between the central passageway and the perforated liner. The valve is actuated by placement of a ball following drilling. Gravel packing through the well annulus may then occur following drilling. A second valve may later by actuated to separate the drill pipe from the liner and associated components.
Bibliography:Application Number: US19950484468