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1. 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.
2. The casing spools used to suspend and to seal the casings.
3. The flanges and the passing inside diameters are designed according to API spec.6A.
  •  Casing head
Casing head and casing spool use standard design, and can apply to all kinds of JMP slip and mandrel type casing hanger.
  •  Straight-bore Design
45shoulder design with high load capacity.
   •  Side Outlet Connection Form
Pipeline thread side outlet
Threaded flange side outlet, design with VR plug.
   •  Secondary Seal
Design with multi-structure secondary seals at bottom.
Installation can be performed on spot per different structure types, injection or non-injection can achieve seal.
   •  Interchangeability of Casing Hanger
Casing hanger design with standard profile
Interchangeability between slip casing hanger and mandrel type casing hanger
  •  Connection Forms between Casing Head and Surface Casing
Threaded bottom type
Welded bottom type
Slip bottom type

Technical parameters:


connected casing O.D. in(mm)

hanger casing O.D. in(mm)

working pressure Psi(Mpa)

vertical bore(mm)

7 5/8 (193.7)

4 1/2 (114.3)

2000 (14)
3000 (21)
5000 (35)
10000 (70)
15000 (105)
20000 (140)

178

9 5/8 (244.5)

5 (127.0)

230

5 1/2 (139.7)

7 (177.8)

10 3/4 (273.0)

5 1/2 (139.7)

254

7 (177.8)

11 3/4 (298.4)

5 1/2 (139.7)

280

7 5/8 (193.7)

8 5/8 (219.0)

12 3/4 (323.8)

5 1/2 (139.7)

308

7 (177.8)

9 5/8 (244.5)

13 3/8 (339.7)

5 1/2 (139.7)

318

7 (177.8)

7 5/8 (193.7)

9 5/8 (244.5)

 
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