Wellhead. The place where Petroleum, Natural Gas, liquefied petroleum gas and other Hydrocarbons resulting from the exploitation in the Field are measured, after they have been suited for transport.
Wellhead. Top of a casing and the attached control and flow valves. The well head is where the control valves, testing equipment and take-off piping are located. Well Testing Flowing of well fluids to provide information on how hydrocarbon will flow from the reservoir, well productivity and the reservoir properties.
Wellhead. Wellhead with sufficient pressure rating is selected from the maximum design pressure and temperature. In conventional xxxxx, the maximum design pressure is assumed to be from a well filled with saturated steam from the bottom of the well to the top, where the bottom hole pressure and temperature conditions is assumed to follow the boiling point depth curve (BPD). For a superheated well, it can be assumed that the well is filled with isenthalpic superheated steam from the bottom, with assumption that from the critical point, the bottom hole pressure increases with depth according to a fixed gradient or other assumption mentioned before. From the IDDP-1 experience, it is clear that the pressure difference between bottom hole and the wellhead is governed by the weight of the steam column in the well and frictional pressure drop is negligible (Xxxxxxx, et al., 2015). The wellhead conditions of RN-15/IDDP-2 of temperatures >345°C to <500°C and pressures of 155 to 250 bar are likely, judging from several thermal gradient estimates (xxx.xxxx.xx). The wellhead master valves from IDDP-1, pressure rating of ASME Class 1500 valve with Class 2500 flanges and material type 1.9 (Xxxxxxx, et al., 2010), were improved and refabricated and used for RN-15/IDDP-2 (Xxxxxxxxxxxx & Xxxxxx, 2017).
