TY JOUR TI CORRELATION ANALYSIS AND HYDROCHEMICAL FACIES OF CONTAMINANT IONS IN OILFIELD PRODUCED WATER OF THE UPPER ASSAM BASIN KW contaminants; correlation; environment; relationships. JO Bulletin of Nizhnevartovsk State University AU Tapan, D.G. AU Gogoi, S.B. AU Storchak, T.. AU Konvar, D.. PY 2025 IS PB Nizhnevartovsk State University