Material classes AA, BB, CC, DD-NL, EE-NL, FF-NL, HH-NL according to API Spec 6A are avaliable.
Basic advantages:
- well workovers can be performed without X-mass tree and flow line disassembly
- reduced dimensions simplify installation and maintenance
- reduced number of connections increases reliability
- the use of stuffing boxes provides additional benefits
- a line connecting the production line and the annulus through a check valve is built into the X-mas tree body
- can be supplied with a multi-hangered split body, which allow to run production string and production tubing without BOP reinstallation (Fig. 2)
- level of technical requirements for manufacturing according to GOST / Safety level according to API: UTT1, UTT2, UTT3, UTT4 / PSL1,PSL2, PSL3, PSL3G, PSL4
- level of technical requirements for performance characteristics according to GOST / according to API: UTR1, UTR2 / PR1, PR2
