OIL OF THE SANTA MAEIA DISTRICT. 
117 
Proximate analysis oj a Santa Maria oil. a 
[Gravity, 10.9° Baurne.] 
Per cent. 
Gravity 
(°B.): 
DISTILLATION. 
Below 150° C... . 
1.0 
24.0 
31.1 
41.9 
2.0 
2.7 
16.8 
36.6 
41.9 
2.0 
150° to 270° C.. . 
39.5 
Above 270° C. . 
Asphalt, grade D. 
Loss.. . 
CALCULATED ANALYSIS. 
Total gasoline.•>. 
55 
41 
Kerosene... 
Middlings and lubricants. 
Asphalt, bv volume f> . 
Loss. 
a Prutzman, P. W. t Bull. California State Mining Bureau, No. 32, 1904, Table 25. 
By weight (154 pounds per barrel), 46.2 per cent. 
The following analyses of oils from the Santa Maria district have 
.been kindly furnished by Prof. Edmond O’Neill, of the University of 
California, who writes concerning them as follows: 
1 do not know the exact locations of the wells from which these oils were derived, 
but they are from the first wells opened in the Santa Maria property [probably the 
Hartnell or the Santa Maria Oil and Gas Company lease]. There is very little differ¬ 
ence in the character of oils from all this district, except in the proportion of light 
constituents and the corresponding percentage of sulphur. Most of these oils contain 
water, which seems to be either in a state of fine emulsion, or possibly in some feeble 
form of hydration—that is, frequently the water will not settle out on standing, even 
by centrifugalizing—nor will it all be driven off at a temperature of 100° Centigrade; 
but at a somewhat higher temperature it seems to be.given off almost with explosive 
violence. 
Analyses and tests of six samples of oil from wells near Santa Maria. 
[Made by Edmond O’Neill.] 
ANALYSES. 
No. 3. 
No. 4. 
No. 5. 
Gravity at 15.5° C. (=60° F.). 
Gravity in degrees Baumd. 
Flash point, open tester.. 
Flash point, closed tester. 
Burning point, open tester... 
Gasoline precipitate (asphaltine, etc.).per cent.. 
Sulphur.do- 
Calorific value.calories.. 
Calorific value.B.T. U.. 
0. 891 
27.800 
(«) 
(«) 
23° C.=73.4° F. 
0.6 
1.57 
10,260 
18, 468 
0.894 
27. 600 
(«) 
(a) 
22° C.=71.6° F. 
0.3 
1.59 
10,363 
18, 653 
0.893 
27. 500 
(«) 
(«) 
21° C. =70° F. 
0.8 
1.56 
10,229 
18,415 
No. 6. 
No. 7. 
No. 13. 
Gravity at 15.5° C. (= 60° F.). 
Gravity in degrees Baum6. 
Flash point, open tester. 
Flash point, closed tester. 
Burning point, open tester....-.- - • 
Gasoline precipitate (asphaltine, etc.).per cent.. 
0.897 
' 26.800 
(«) 
(a) 
21° C. =68° F. 
0.7 
1.61 
10,284 
18,512 
0.908 
24.800 
(a) 
[“) 
20° C.=68° F. 
1.6 
2.09 
18,375 
18,676 
0.926 
21.670 
(«) 
(a) 
24° C.=75° F. 
3.0 
1.8 
8,078 
14,541 
Calorific value. 
Calorific value. B.I.U.. 
a Under 15°C.=60° F. 
