Wells – Cementing device
Reexamination Certificate
2006-06-27
2006-06-27
Neuder, William (Department: 3672)
Wells
Cementing device
C166S075150
Reexamination Certificate
active
07066249
ABSTRACT:
Apparatus for cementing a string of tubulars in a borehole comprises an enclosure having a bore therethrough, an axially fixed sphere canister having a sphere aperture therethrough, a sphere valve member having a valve body disposed internally of said bore, and a sphere disposed in said sphere aperture, wherein said sphere valve member has a hold position closing said sphere aperture and a drop position opening said sphere aperture to release said sphere.
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Bates Shannon W.
Conley & Rose, P.C.
Neuder William
Smith International Inc.
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