How to choose a pressure relief valve?
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Experts, I have a question regarding the selection of a pressure relief valve; I would appreciate your advice. For an oil field’s self-priming well whose output is a mixture of oil, gas, and water, it is desired to reduce the pressure of the fluid produced by the well from 6 MPa to 2 MPa using a pressure reducing valve. How should such a valve be selected? I checked some information, and it all relates to the selection of single-phase materials; I couldn’t find anything on how to choose materials for mixtures. How should I proceed? Are there any small calculation software programs? Thank you
Temperature, pressure, flow rate, and material all must meet the requirements. Products from different manufacturers vary, and there is no specific universal calculation software for this; it is recommended to consult the manufacturer
If the pressure requirements are not strict, pressure-reducing orifice plates can be considered; there are many manufacturers of such products.
Thank you for your advice. At the well site, the pressure is reduced from 6 MPa to 2 MPa; after entering the station, it is further lowered by 0.3 MPa. The design pressure for the equipment inside the station is relatively low, at 0.4 MPa, so I still prefer to use a pressure reducing valve. Using a pressure-reducing orifice plate is relatively simple, but pressure control is not very stable; fluid production at the wellsite fluctuates significantly, which may cause damage to the equipment inside the station.
After the pressure-reducing orifice plate, install a safety valve
Thank you, friend. I’ll think about it again.