API 6A глава корпус

Connecting with surface casing, it is applicable for fixing wellhead, hanging the casing string, sealing and controling the annular space between the casing and tubing. (1)Top connections are API 6A flanged, and the flanges are provided with locking bolts; (2)Casing hanger has straight type seat bore and 45°cone of hanging shoulders, with strong loading ability; (3)Structural type of the matched casing hanger: slip or mandrel(thread); (4)Outlet connection can be thread, bolted flange; (5)Bottom connection can be threaded, welded or slip. Casing head Specifications for single Casing head Connected Casing(O/D)In(mm)Hanger Casing(o/d)In(mm)Working pressurePsi(Mpa)Vertical boremm7 5/8(193.7)4 1/2(114.3)2,000(14)3,000(21)5,000(35)10,000(70)15,000(105)20,000(140)1789 5/8(244.5)5 (127.0)2305 1/2(139.7)7 (177.8)10 3/4 (273.0)5 1/2(139.7)2547 (177.8)11 3/4(298.4)5 1/2(139.7)2807 5/8(193.7)8 5/8(219.0)12 3/4(323.8)5 1/2(139.7)3087 (177.8)9 5/8(244.5)13 3/8(339.7)5 1/2(139.7)3187 (177.8)7 5/8(193.7)9 5/8(244.5)CASING HANGER It is used for supporting the casing loads, and sealing the annular space between casing and tubing; The structure type: slip or mandrel(thread); The maximum working pressure is 20,000 Psi, and the maximum hanging capacity is equal to 80% of yield strength of the casing. Slip-type hanger: 1.WE and G hangers are of bolt-energized sealing structure; 2. W hanger adopts self-weight energized sealing structure, suitable for most working circumstances; 3. WD hanger is applicable for connection of casing head and surface casing and uses the external force to keep the slip insert enclasping the surface casing. Slip-type hanger:1. WE and G hangers are of bolt-energized sealing structure; 2. W hanger adopts self-weight energized sealing structure, suitable for most working circumstances; 3.WD hanger is applicable for connection of casing head and surface casing and uses the external force to keep the slip insert enclasping the surface casing.