Corrosion Behavior of Carbon Steel in Synthetically Produced Oil Field Seawater

Table 1

Ions present in typical oil field seawater.

Species typically found in oil field brines		Element		Concentration mg/L
CO2	Dissolved carbon dioxide	Barium	Ba^2+	31
H2CO3	Carbonic acid	Boron	B	6
	Bicarbonate ion	Calcium	Ca^2+	284
	Carbonate ion	Iron	Fe^3+	55.85
H^+	Hydrogen ion	Magnesium	Mg^2+	24.31
OH^−	Hydroxide ion	Phosphorous	P^3−	1
Fe^2+	Iron ion	Potassium	K	50
Cl^−	Chloride ion	Sodium	Na	4770
Na^+	Sodium ion	Strontium	Sr^2+	83
K^+	Potassium	Chloride	Cl^−	7480
Ca^2+	Calcium ion	Bromide	Br^−	20
Mg^2+	Magnesium ion	Sulphate		21
Ba^2+	Barium ion	Nitrate		0.50
Sr^2+	Strontium ion	Hydroxyl	OH^−	0
CH3COOH (HAc)	Acetic acid	Carbonate		0
CH3COO^− (Ac^−)	Acetate ion	Bicarbonate		500
	Bisulphate ion	Dissolved CO2	CO2	92.4
	Sulphate ion	Specific gravity		1.014
		pH		6.58
		Resistivity		0.4405 Ohm
		Total dissolved solids 1		3.453 mg