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Christmas Tree Wellhead. Producing surface wells that require pumps pump jacks nodding donkeys etc frequently do not utilize any tree due to no pressure containment requirement. Without a wellhead you cannot utilize a christmas tree.
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 riser top. In petroleum and natural gas extraction a christmas tree or tree is an assembly of a multi valved structure consisting of valves spools and fittings used to control the ﬂow of oil from the well. A wellhead must be present in order to utilize a christmas tree and is used without a christmas tree during drilling operations.
However a wellhead and christmas tree are entirely separate pieces of well equipment.
Without a wellhead you cannot utilize a christmas tree. However a wellhead and christmas tree are entirely separate pieces of well equipment. Wellhead christmas tree wom manufactures a variety of api certified wellhead products that can be customized to customer requirement. A wellhead is necessary to control the pressure during drilling and production.