Wellheads | Casing Head Spools

Casing Head Spools
Destination:

The casing spools used to suspend and to seal the casings.
The flanges and the passing inside diameters are designed according to API spec.6A.
On request, the side outlets of casing spools are provided with TBG or LP threads, or with threaded flanges.
Casing head spools are provided with a seat for secondary sealing. The lower flange can be provided with a second smaller supplementary ring gasket allowing the maximum pressure build-off with one stage.
About Material class and Temperature classification, see Appendix A.

Casing head spools

Bottom flange Top flange Slips size L D1 D2 H1 H2 d min *
in x PSI in x PSI in in in in in in in
2,000 PSI WP
13 5/8 x 2,000 11 x 2,000 4 1/2 ÷ 7 17,7 22 20 2,94 2,81 9,92
3,000 PSI WP
13 5/8 x 3,000 11 x 3,000 4 1/2 ÷ 7 17,5 24 21,5 3,44 3,06 9,92
16 3/4 x 3,000 24,4 27,75 21,5 3,94 3,06 9,92
13 5/8 x 3,000 13 5/8 x 3,000 5 ÷ 10 3/4 17,7 24 24 3,44 3,44 12,39
16 3/4 x 3,000 17,7 27,75 24 3,94 3,44 12,39
5,000 PSI WP
11 x 3,000 11 x 5,000 4 1/2÷ 7 17,7 21,5 23 3,06 4,69 9,73
11 x 5,000 18,9 23 23 4,69 4,69 9,73
13 5/8 x 3,000 17,7 24 23 3,44 4,69 9,73
13 5/8 x 5,000 25,6 26,5 23 4,44 4,69 9,73
16 3/4 x 3,000 25,2 27,75 23 3,94 4,69 9,73
20 3/4 x 3,000 13 5/8 x 5,000 7 ÷ 10 3/4 26,6 33,75 26,5 4,75 4,44 9,73
10,000 PSI WP
11 x 10,000 9 x 10,000 4 1/2÷ 7 25,6 25,75 21,75 5,56 4,88 7,62
11 x 10,000 27,6 25,75 25,75 5,56 5,56 8,41
13 5/8 x 5,000 26 26,5 25,75 4,44 5,56 8,41
13 5/8 x 10,000 4 1/2 ÷ 7 5/8 27,6 30,25 25,75 6,62 5,56 8,41
13 5/8 x 5,000 13 5/8 x 10,000 7 ÷ 10 3/4 26 26,5 30,25 4,44 6,62 10,66
16 3/4 x 5,000 27,2 30,38 30,25 5,13 6,62 10,66
18 3/4 x 5,000 33,5 35,62 30,25 6,53 6,62 10,66
18 3/4 x 10,000 37,4 40,94 30,25 8,78 6,62 10,66
15,000 PSI WP
11 x 10,000 9 x 15,000 4 1/2 ÷ 5 1/2 29,1 25,75 25,5 5,56 5,75 7,41
11 x 15,000 11 x 15,000 4 1/2 ÷ 7 35,4 32 32 7,38 7,38 8,41

* - available value for maximum dimension of casing
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