Cementing manifold assembly
AssigneeSmith International, Inc.
InventorJames A. Simson
Life of this patent
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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.
Claims43
An apparatus for cementing a string of tubulars in a borehole, the apparatus comprising:
- 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.
An apparatus for cementing a string of downhole tubular members in a borehole, comprising:
- an upper member;
- a first launching unit including a first dart canister and a first dart valve member disposed within a first modular member;
- a second launching unit including a second dart canister and a second dart valve member disposed with a second modular member;
- and
- a third launching unit including a sphere canister and a sphere valve member disposed within a lower member;
- wherein at least one of said canisters is axially fixed;
- and
- wherein at least one of said dart valve members comprises a valve body disposed internally of a bore within at least one of said modular members.
Dependencies are inferred from the claim text.