Page 34 - Environmental Control in Petroleum Engineering

Table 2-1
Elemental Composition of Drilling Fluid Constituents (mg/kg)
Element Water Cuttings Barite Clay Chrome-lignosulfonate Lignite Caustic jnmentai
Aluminum 0.3 40,400 40,400 88,600 6,700 6,700 0.013
Arsenic 0.0005 3.9 34 3.9 10.1 10.1 0.039 O
Barium 0.01 158 590,000 640 230 230 0.26 s
Calcium 15 240,000 7,900 4,700 16,100 16,100 5,400 **•*
i.
Cadmium 0.0001 0.08 6 0.5 0.2 0.2 0.0013 S"
Chromium 0.001 183 183 8.02 40,030 65.3 0.00066 I?
Cobalt 0.0002 2.9 3.8 2.9 5 5 0.00053
Copper 0.003 22 49 8.18 22.9 22.9 0.039 si
Iron 0.5 21,900 12,950 37,500 7,220 7,220 0.04 55
2
Lead 0.003 37 685 27.1 5.4 5.4 0.004
3
Magnesium 4 23,300 3,900 69,800 5,040 5,040 17,800
Mercury 0.0001 0.12 4.1 0.12 0.2 0.2 5 S'
fls
Nickel 0.0005 15 3 15 11.6 11.6 0.09 _S'
Potassium 2.2 13,500 660 2,400 3,000 460 51,400
Silicon 7 206,000 70,200 271,000 2,390 2,390 339
Sodium 6 3,040 3,040 11,000 71,000 2,400 500,000
Strontium 0.07 312 540 60.5 1030 1030 105
Source: Deeley, 1990.