Steel equipment installed at the surface of the well containing an assembly of heavy duty hangars and seals (the wellhead is used to support the weight of casing strings hung from it and to contain well pressure)
The point of gas production Natural gas prices are often cited "at the wellhead" as opposed to the point of consumption which also includes the cost of transporting gas from the wellhead to the consumer
The physical structure, facility, or device at the land surface from or through which ground water flows or is pumped from subsurface, water-bearing formations
Of or pertaining to the equipment at the top of the well bore which is used to maintain surface control of the well Includes casinghead, tubing head, Christmas tree, etc