Sour Oil and Multiphases
Sour Oil and Multiphases : Sour crude oil systems which have operated satisfactorily using offthe-shelf equipment are outside the scope of this Standard when the fluids being handled are either crude oil or two- or three-phase crude, water, and gas when: (1) the maximum gas/liquid ratio is 500 SF/bbl; (2) the gas phase contains a maximum of 15% hydrogen sulfide; (3) the partial pressure of hydrogen sulfide in the gas phase is a maximum of 10 psia (69 kPa); and (4) the surface operating pressure is a maximum of 265 psia (1.8 Mpa) (see Figure C.2). The satisfactory service of off-the-shelf equipment in these low pressure systems is believe to be a result of the inhibitive defect of the oil and the low stresses encountered under the low pressure conditions. (RP 49)
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