Mapping of iodine,lithium and strontium in oilfield water of Cambay basin,Gujarat

The major oil and gas producing fields in Gujarat are found in Cambay basin. It is known that a huge amount of water is produced with oil and gas production which is called produced oilfield water. Some useful elements (iodine, lithium and strontium) are present with this oilfield water which may be extracted in case of their abundance. The investigation of iodine, lithium and strontium concentrations in produced oilfield water was accomplished by Ion chromatography while for other cations ICP instrument was used. In oilfield water, iodine content ranges from 0.08 to 1.89 mg/l, lithium content ranges from 0.06 to 2.90 mg/l and strontium content ranges from 0.24 to 73.5 mg/l. In addition to above element, Na, Mg, K, Ca, Al, Ba, Fe, Se, Cu, Zn, As, Cd and Hg were also analyzed. The pH and TDS of all the samples were also measured. There is considerable variation in iodine, lithium and strontium in oilfield water samples collected from oil and gas producing fields of Gujarat. There is no definite pattern of variation in iodine, lithium and strontium content.