Offshore wellhead X-mas tree

Fracture wellhead and X-mas tree is used for coiled tubing fracturing and unconventional oil and gas recovery fracture, make a large number of fracture liquid injecting into formation and control the wellhead pressure.

Offshore wellhead and X-mas tree is designed to solve the problem of space limitation faced in offshore platform oil and gas wells, and adopts a complex integral design. This offshore wellhead and X-mas tree is usually machined from one steel bar, thus decreasing the overall height of wellhead and X-mas tree equipment. To increase its safety, this equipment is fitted with a hydraulic safety valve.

Offshore wellhead and X-mas tree

Offshore wellhead and X-mas tree equipment has an integral BIW cable type and three single cable types to suit different requirements.

  • Combined master valve and swab valve to decrease the offshore wellhead & X-mas tree height
  • Hydraulic safety valve in main drift diameter to achieve remote shutdown of wellhead in an emergency
  • Segregated tubing head spool. Top and bottom parts are connected by insert type locking piece. This structure means the X-mas tree could be adjusted in any direction during installation.
  • Equipped with BIW cable penetration and fitted adapter flange and hanger.

Offshore wellhead and X-mas tree from Sanjack Petro,  Dongying City, Shandong Province, China.

Working pressure (PSI)3000, 5000, 10000,15000
Nominal diameter (inch)2-9/16、3-1/8、4-1/16
Working temperature ℃PU (-29℃-121℃)
Working mediaCrude oil/Gas
Material classBB/CC/DD/EE/FF
Specification levelPSL2, PSL3/3G,PSL4
Performance levelPR1 PR2

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