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C-22/C29 Casing Heads
C-22/29 casing heads feature a versatile straight bore design that can accept a wide variety of slip and mandrel type casing hangers.
C-22 Casing Heads use a straight-bore bowl design that prevents damage to sealing areas from drilling tools and prevents test-plug and bowl-protector wedging problems under pressure. This straightbore design also reduces maintenance costs and permits suspension of heavy casing loads. C-22 Casing Heads normally are furnished with 2-inch threaded outlets, but optional sizes and studded outlets are available upon request. Bottom connections can be furnished slip-on-weld, threaded or slip-n-lock. C-22 Casing Heads permit interchangeability of casing hangers C-22 and C-21.
The C-29 Casing Head uses a straight bore based on the same reliable design as the C-22, except the bowl is 2 inches deeper, permiting the acceptance of the minimal-deflection C-29 Casing Hanger.This allows extreme-load casing-hanging capacity compared with the C-22 profile.
FEATURES
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◆Straight Bore Design: ◆Manufacturing Standard: API Spec 6A.
◆Outlets:
--Line Pipe Outlets. --Studded Side Outlets. --Extended Flanged Outlets. ◆Casing Hanger Compatibility:
--Slip-type casing hangers.
--Mandrel style casing hangers. |
◆Top connections:
--All C22&C29 casing head have Standard API flange.
--Optional Lockdown Screws(two) for wear bushing or for annular seal compression can be provided on request.
◆Bottom Connections:
--Slip -on weld
--Slip -on weld
--Slip-on weld with O-ring
--Threaded