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Casing Heads


        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.

      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.

C-22 Casing Head Specifications (API-6A)

Top Flange Size (inches)

Working Pressure (psi)

Casing Size (inches)

   Outlet

9"

2,000

7"

2" LP

9"

3,000

7"

2" LP

9"

2,000

7-5/8"

2" LP

9"

3,000

7-5/8"

2" LP

9"

5,000

7-5/8"

2" LP

9"

2,000

8-5/8"

2" LP

9"

3,000

8-5/8"

2" LP

9"

5,000

8-5/8"

2" LP

11"

2,000

8-5/8"

2" LP

11"

3,000

8-5/8"

2" LP

11"

5,000

8-5/8"

2" LP

11"

2,000

9-5/8"

2" LP

11"

3,000

9-5/8"

2" LP

11"

5,000

9-5/8"

2" LP

11"

2,000

10-3/4"

2" LP

11"

3,000

10-3/4"

2" LP

11"

5,000

10-3/4"

2" LP

13-5/8"

2,000

11-3/4"

2" LP

13-5/8"

3,000

11-3/4"

2" LP

13-5/8"

2,000

13-3/8"

2" LP

13-5/8"

3,000

13-3/8"

2" LP

13-5/8"

5,000

13-3/8"

2" LP

16-3/4"

2,000

16"

2" LP

16-3/4"

3,000

16"

2" LP

21-1/4"

2,000

20"

2" LP

20-3/4"

3,000

20"

2" LP

 

C-29 Casing Head Specifications (API-6A)

Top Flange Size (inches)

Working Pressure (psi)

Casing Size (inches)

Outlet

11"

3,000

8-5/8"

LP/SSO

11"

5,000

8-5/8"

LP/SSO

11"

3,000

9-5/8"

LP/SSO

11"

5,000

9-5/8"

LP/SSO

11"

3,000

10-3/4"

LP/SSO

11"

5,000

10-3/4"

LP/SSO

13-5/8"

3,000

13-3/8"

LP/SSO

13-5/8"

5,000

13-3/8"

LP/SSO

16-3/4"

2,000

16"

LP/SSO

16-3/4"

3,000

16"

LP/SSO

16-3/4"

5,000

16"

LP/SSO

21-1/4"

2,000

20"

LP/SSO

20-3/4"

3,000

20"

LP/SSO



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