Page 227 - Geochemistry of Oil Field Waters

21 4 ORIGIN OF OILFIELD WATERS

TABLE 7.VI
Jurassic system - highest concentration of a constituent found, average concentration,
and number of samples analyzed

Constituent Concentration (mg/l) Number of samples
highest average
-
Lithium 400 10 80
Sodium 120,000 57,300 85
Potassium 900 140 9
Rubidium 0.10 0.10 1
Cesium 0.10 0.10 1
Calcium 56,300 25,800 85
Magnesium 5,200 2,500 84
Strontium 2,080 320 9
Barium 50 10 7
Boron 50 13 9
Chloride 210,000 141,000 85
Bromide 6,000 1,200 80
Iodide 40 16 8
Bicarbonate 2,640 140 72
Sulfate 1,480 21 0 78
Organic acid
as acetic 12 12 1

TABLE 7.VII

Permian system - highest concentration of a constituent found, average concentration,
and number of samples analyzed
-
Constituent Concentration (mg/l) Number of samples
highest average

Lithium 6 3 3
Sodium 109,000 47,000 54
Potassium 40 5 170 3
Rubidium 2 0.80 3
Cesium 0.20 0.13 3
Calcium 22,800 8,600 54
Magnesium 5,800 2,000 53
Strontium 10 7 3
Boron 20 8 3
Copper 0.88 0.88 1
Chloride 177,000 92,700 64
Bromide 68 46 3
Iodide 3 3 1
Bicarbonate 281 77 49
Carbonate 36 36 1
Sulfate 3,400 7 30 41
Organic acid
as acetic 2 20 170 2
Ammonium 24 24 3