STEP 1: Calculate fluid properties 1: PF = KP1 * DEPTH 2: PS = KP2
Where: KP1 = 0.46 psi/foot for English units (use measured pressures where available) KP1 = 10.4 KPa/meter for Metric units KP2 = 14.7 to 600 psi for English units KP2 = 100 to 4000 KPa for Metric units
3: DENShy = 8829.6 / (131.5 + API) / 62.4 * KD2
Where: KD2 = 1.00 for English units KD2 = 1000 for Metric units
. Where: KG1 = 0.0362 for API < 30 KG1 = 0.0178 for API > 30 KG2 = 1.0937 for API < 30 KG2 = 1.1870 for API > 30 KG3 = 25.7242 for API < 30 KG3 = 23.9318 for API > 30
KT2 = 460'F NOTE: PF is in psi and FT in Fahrenheit for Equation 4.
5: Bo = 1 + KC1 * GOR * (KC2 + KC3 * GOR) * (FT – 60) * (API / DENShy)
KC1 = 0.000 467 000 for API > 30 KC2 = 0.000 017 510 for API < 30 KC2 = 0.000 011 000 for API > 30 KC3 = 0.000 000 018 for API < 30 KC3 = 0.000 000 0013 for API > 30
NOTE: DENShy is in gm/cc and FT in Fahrenheit for Equation 5. GOR is in scf/bbl.
6: Bg = (PS * (TF + KT2)) / (PF * (TS + KT2)) * ZF
Where: KT2 = 460 for English units KT2 = 273 for Metric units
7: VISd = 10^(10^(3.0324 – 0.02023 * API) / (FT^1.163)) – 1
8: VISo =
(10.715 / (GOR +100) ^ 0.515) * VISd
Where: COMMENTS: |
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