Page 99 - Petrophysics

72 PETROPHYSICS: RESERVOIR ROCK PROPERTIES

TABLE 2.8
CONVERSION OF VISCOSITY MEASURED FUROL SECONDS AT 122°F
AS
TO CENTISTOKES [32]
~~
Furol Seconds at Furol Seconds at
Centistokes 122°F Cent istokes 122°F
48 25.3 140 67.0
50 26.1 145 69.4
52 27.0 150 71.7
54 27.9 155 74.0
56 28.8 160 76.3
58 29.7 165 78.7
60 30.6 170 81.0
62 31.5 175 83.3
64 32.4 180 85.6
66 33.3 185 88.0
68 34.2 190 90.3
70 35.1 195 92.6
72 36.0 200 95.0
74 36.9 210 99.7
76 37.8 220 104.3
78 38.7 230 109.0
80 39.6 240 113.7
82 40.5 250 118.4
84 41.4 260 123.0
86 42.3 270 127.7
88 43.2 280 132.4
90 44.1 290 137.1
92 45.0 300 141.8
94 45.9 310 146.5
96 46.8 320 151.2
98 47.7 330 155.9
100 48.6 340 160.6
105 50.9 350 165.3
110 53.2 360 170.0
115 55.5 370 174.7
120 57.8 380 179.4
125 60.1 390 184.1
130 62.4 400 188.8
135 64.7

(paraffins), (2) cycloalkanes (naphthenes), (3) the aromatic series, and
(4) asphalts, asphaltenes, and resins (complex, high-molecular-weight
polycyclic compounds containing nitrogen, sulfur, and oxygen atoms
in their structures: the NSO compounds). The petroleums are generally
classified as paraffinic, naphthenic, aromatic and asphaltic according to
the relative amounts of any of the series [ 141.