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Conventional Christmas Tree API 6A Wellhead equipment for oil and gas
Intended for sealing wellheads of flowing wells, hanging tubing string, control of well operation mode, shutoff and direction of produced fluid to main line as well as for performance of necessary technological operations.
For the following nominal pressures 14(2,000), 21(3,000), 35(5,000), 70(10,000), 105(15,000) МPа(psi) there are various modifications of Christmas trees.
Material classes for body parts and shutoff elements of gate valves acc to API Spec 6A: АА, BB, DD, EE.
Product specification level acc to API Spec 6A: PSL1...PSL3.
Performance requirements level acc to API Spec 6A: PR1, PR2.
Features:
Body parts of X-mas trees are forged that ensures their high strength and reliability.
Can be manufactured to any diagram from API6A with hanging tubing string in mandrel hanger or with hanging tubing string in adapter flange.
Tubing string can be hanged both in mandrel hanger of tubing head with rubber sealing rings or metal-to-metal sealing and in adapter flange with thread API Spec 5B TBG 23/8’’, 27/8’’, 31/2’’, 4’’, VAGT, HVAM, et al.
Design of hanger and tubing head makes possible installation of plug with back pressure valve in order to provide possibility to change X-mas tree and side outlet gate valves without well killing and under pressure.
In side outlets of X-mas tree and tubing head, intermediate flanges are provided with thermopockets for installation of temperature gauges and valves for installation of pressure gauges.
Christmas tree is completed with all necessary spare parts and technological tools necessary for assembly and operation.
| Tubing head top flange | Tubing head bottom flange | Nominal bore of X-mas tree trunk | Nominal pressure, МPа(psi ) |
| 180(7 1/16) | 280(11) | 50(2 1/16), 65(2 9/16), 80(3 1/16), 100(4 1/16) | 14(2,000), 21(3,000), 35(5,000), 70(10,000), 105(15,000) |
| 230(9) |
| X-mas tree trunk | X-mas tree side outlets | Tubing head side outlets | Nominal pressure, МPа(psi ) |
| 50(2 1/16) | 50(2 1/16) | 50(2 1/16) | 14(2,000), 21(3,000), 35(5,000), 70(10,000), 105(15,000) |
| 65(2 9/16) | 50(2 1/16), 65(2 9/16) | 50(2 1/16), 65(2 9/16) | |
| 80(3 1/16) | 50(2 1/16), 65(2 9/16), 80(31/16) | ||
| 100(4 1/16) | 65(2 9/16), 80(3 1/16), 100(4 1/16) |
