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en.wikipedia.org/wiki/Christmas_tree_(oil_well)

In petroleum and natural gas extraction, a Christmas tree, or "tree", is an assembly of valves, ... A wellhead is used without a Christmas tree during drilling operations, and also for riser tie-back situations that later would have a tree installed at ...

www.croftsystems.net/oil-gas-blog/the-difference-between-a-wellhead-christmas-tree

Aug 29, 2014 ... The difference between a wellhead and a Christmas tree in the oil and gas industry.

www.controlglobal.com/articles/2015/wellheads-and-christmas-trees-is-there-a-difference

Aug 19, 2015 ... Wellheads and Christmas trees are different pieces of equipment (Figure 1). A wellhead is used during both drilling and production. During ...

www.slideshare.net/MohamedAbozeima/wellheads-and-christmas-tree-types-and-fuctions

Jan 5, 2017 ... this presentation is a course a bout wellheads which includes the basic components of the well head and the advanced techniques. helping ...

www.glossary.oilfield.slb.com/Terms/c/christmas_tree.aspx

An assembly of valves, spools, pressure gauges and chokes fitted to the wellhead of a completed well to control production. Christmas trees are available in a ...

www.ask.com/youtube?q=Wellhead+Christmas+Tree&v=oVAEwE8YBA0
Sep 29, 2012 ... OIL AND GAS SURFACE WELLHEAD AND CHRISTMAS TREE Components Illustration Handbook The purpose of this handbook is to simplify ...

www.linkedin.com/pulse/difference-between-wellhead-christmas-tree-meisa-gannam-m-b-a-

Mar 6, 2015 ... Christmas Tree or Wellhead? A Christmas Tree is an assembly of valves, spools, and fittings used for an oil well, gas well, water injection well, ...

www.wipertrip.com/completion/wellhead/658-christmas-tree-design.html

A Christmas tree is the cross-over between the wellhead casing and the flowline to the production process. It is defined as all the equipment from and including ...

www.drillingformulas.com/surface-christmas-tree-dry-tree-basic-knowlege

Jul 31, 2016 ... A Christmas tree is installed on top of the last casing spool on a surface well or the high pressure wellhead housing for a subsea well. Figure 1 ...