Oil and Gas Well Completions


Tubinghead and X-mas tree

Tubinghead
 
Surface equipment from which the tubing is 
suspended
Xmas tree or valve array

Used to control well during production
Mounted above wellhead
Typically sourced from same manufacturer
Wellhead & BOP during completion



 
Primary functions of tubinghead
Suspend tubing with hanger
Seal between tubing and annulus
Provide access ports to annulus
gaslift gas
inhibitor injection
circulating the well
Provide mounting for adapter flange or Xmas tree

Tubing Hanger Types

Threaded Hanger Flange
used in low pressure wells (e.g. Pumping wells)
Boll Weevil Type
Ram Type Tubing Hanger
Boll Weevil Type

Tubing Hanger for Bowl Type Tubing Head.
 
Less suitable to land tubing in tension 
Boll-Weevil type hanger and housing 
 Spool and Hanger
Hangers for Dual Completion

Ram Type Tubing Hanger
allows free tubing manipulation to latch tubing in
 tension
Tubing tension hanger Cameron SRT





Tubing Hanger with Extended Neck
Hanger may have extended neck
 
Projects into base of X-mas tree or adapter 
flange
Sealed flow path through wellhead

Xmas tree or adapter interface