COMPOSITION OF THE OIL-FIELD WATERS. 
69 
Analysis 85 (Table 14, p. 85) shows a similar water from the Kern 
Kiver field. It resembles the waters of the west side very closely, 
although its concentration is lower and its secondary alkalinity is 
somewhat higher. 
Table 6 . —Analysis of essentially meteoric water altered by action of oil {reversed type), 
from oil wells in the Coalinga oil fields, Cal. 
PROPERTIES OF REACTION IN PER CENT. 
Primary salinity. 
Secondary salinity. 
Primary alkalinity. 
Secondary alkalinity. 
Per cent of rS0 4 in rS0 4 +rCl. 
Ratio ofrC 03 +rHC 0 3 torS 0 4 . 
CONSTITUENTS IN PARTS PER MILLION. 
Sodium (Na) and potassium (K)a. 
Calcium (Ca). 
Magnesium (Mg). 
Iron oxide (F 6203 ) and alumina (A1 2 0 3 )... 
Sulphate (S 0 4 ). 
Chloride (Cl). 
Carbonate (CC> 3 )Z>. 
Silica (Si0 2 ). 
Hydrogen sulphide (H 2 S). 
REACTING VALUES IN PER CENT. 
Alkalies: 
Sodium (rNa) and potassium (rK)a... 
Alkaline earths: 
Calcium (rCa). 
Magnesium (rMg). 
Strong acids: 
Sulphate (rS0 4 ). 
Chloride (rCl). 
Weak acids: 
Carbonate (rCC> 3 )&. 
ANALYSIS AS REPORTED .c 
Sodium sulphate. 
Sodium chloride. 
Sodium carbonate. 
Calcium sulphate. 
Calcium chloride... 
Calcium carbonate. 
Magnesium sulphate. 
Magnesium chloride. 
Magnesium carbonate. 
Iron oxide and alumina. 
Silica. 
Hydrogen sulphide 
34 
35 
36 
37 
38 
39 
34.8 
4.6 
1.4 
28.6 
30.6 
34.4 
0 
0 
0 
0 
0 
0 
51.8 
75.8 
94.4 
69.4 
68.6 
59.2 
13.4 
19.6 
4.2 
2.0 
.8 
6.4 
2.8 
4.4 
0 
10.5 
9.2 
13.4 
65.2 
477 
00 
23.8 
24.8 
14.3 
799 
1,123 
1,458 
3,699 
3,968 
2,610 
62 
60 
22 
13 
6.3 
122 
28 
109 
22 
37 
16 
21 
15 
38 
3.4 
4.8 
1.5 
22 
8 
0 
238 
228 
262 
480 
95 
32 
1,494 
1,700 
1,280 
784 
1,737 
1,953 
3,514 
3,634 
2,382 
86 
69 
41 
53 
29 
37 
2,276 
3,239 
3,531.4 
9,052.8 
9,582.8 
6,714 
26 
0 
6.3 
43.3 
40.2 
47.9 
49.0 
49.6 
46.8 
3.8 
2.4 
.8 
.2 
.1 
2.5 
2.9 
7.4 
1.3 
.8 
.3 
.7 
.5 
. 1 
.0 
1.5 
1.4 
2.3 
16.9 
2.2 
.7 
12.8 
13.9 
14.9 
32.6 
47.7 
49.3 
35.7 
34.7 
32.8 
1.89 
20.61 
19. 68 
21.39 
46.21 
2.03 
143.97 
163.86 
123.43 
64.18 
150.95 
193.69 
351.42 
370. 29 
222.96 
.48 
.40 
.55 
9.05 
8.39 
2. 79 
1.91 
.92 
17.46 
. 15 
.73 
7.45 
.43 
5.74 
15.52 
4.07 
7.56 
3.26 
3.70 
.85 
2.22 
.19 
.28 
.09 
5.05 
4.05 
2.45 
3.07 
1.72 
2.18 
132.97 
189.21 
206. 20 
528.82 
559.82 
392.25 
1.52 
.00 
.37 
a Reported and calculated as sodium but includes potassium. 
b Reported and calculated as carbonate but probably in part bicarbonate, 
c In hypothetic combinations, in grains per U. S. gallon. 
34. California Oilfields (Ltd.) well 5, sec. 29, T. 19 S , R. 15 E. Sulphur water from 2,655 feet, or a short 
distance above oil zone. Analyst, Standard Oil Co., October, 1915. 
35. California Oilfields (Ltd.) well 37, sec. 27, T. 19S.,R. 15 E. Analyst, Smith, Emery & Co., October, 
1915. Authority, California Oilfields (Ltd.). 
36. California Oilfields (Ltd.) well 15, sec. 34, T. 19S.,R.15E. Analyst, Smith, Emery & Co., November, 
1915. Authority, California Oilfields (Ltd.). 
37,38,39. Water from oil wells in secs. 35 and 36, T. 19 S., R. 15 E., and sec. 2 , T. 20 S., R. 15 E., respectively. 
This water is thought by most of the operators to occur at the base of the main oil zone; it is cer¬ 
tainly closely associated with the oil. Analyst, Kern Trading & Oil Co. 
