Methods for collection and analysis of geopressured geothermal and oil field waters

Water Supply Paper 2194
By: , and 



Present methods are described for the collection, preservation, and chemical analysis of waters produced from geopressured geothermal and petroleum wells. Detailed procedures for collection include precautions and equipment necessary to ensure that the sample is representative of the water produced. Procedures for sample preservation include filtration, acidification, dilution for silica, methyl isobutyl ketone (MIBK) extraction of aluminum, addition of potassium permanganate to preserve mercury, and precipitation of carbonate species as strontium carbonate for stable carbon isotopes and total dissolved carbonate analysis. Characteristics determined at the well site are sulfide, pH, ammonia, and conductivity. Laboratory procedures are given for the analysis of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium, iron, manganese, zinc, lead, aluminum, .and mercury by atomic absorption and flame emission spectroscopy. Chloride is determined by silver nitrate titration and fluoride by ion-specific electrode. Bromide and iodide concentrations are determined by the hypochlorite oxidation method. Sulfate is analyzed by titration using barium chloride with thorin indicator after pretreatment with alumina. Boron and silica are determined colorimetrically by the carmine and molybdate-blue methods, respectively. Aliphatic acid anions (C2 through C5) are determined by gas chromatography after separation and concentration in a chloroform-butanol mixture.
Publication type Report
Publication Subtype USGS Numbered Series
Title Methods for collection and analysis of geopressured geothermal and oil field waters
Series title Water Supply Paper
Series number 2194
DOI 10.3133/wsp2194
Edition -
Year Published 1982
Language ENGLISH
Publisher U.S. Geological Survey ; Washington : U.S. G.P.O.,
Description iii, 21 p. : ill. ; 28 cm.
Google Analytic Metrics Metrics page
Additional publication details