Abstract
The Solubility of Ethane in Water at Pressures to 1200 Pounds Per SquareInch Abstract Since water is present in natural gas and petroleum reservoirs, it is ofengineering value to have accurate experimental data regarding the behavior ofwater in hydro-carbon systems. Since experimental data of this nature are soscarce in literature, a program is under way at the University of Texas toobtain experimental data regarding the distribution of water in petroleum hydrocarbons. This initial paper is subdivided into three parts:The apparatus and analytical procedure are discussed.The equipment has been checked by comparing the experimental data with dataof literature on the solubility of methane in water at 77'F and pressures to10,000 psia.Experimental data are presented at 100, 160, 220, 280, and 340'F on thesolubility of ethane in water at pressures to 1200 psia. As the temperature isincreased the solubility of ethane in water first exhibits a minimum and then amaximum solubility. The range of applicability of Henry's Law is discussed. Introduction Although considerable experimental data have been published onwater-hydrocarbon systems in the hydrate region, the information on thesesystems in the vapor-liquid and the vapor-liquid-liquid regions at elevatedpressures is extremely scarce. A survey of the literature on hydrocarbon-watersystems at elevated pressures was presented by McKetta and Katz showing thesystems and phases investigated. In addition to these existing published data, Poettman and Dean have reported the water content of propane in the three-phaseregion (only the propane-rich liquid and the vapor phases were studied) andMichels, et al. have reported the solubility of methane in water at pressuresto 6800 pounds per square inch at 77?F and at pressures to 1500 psia attemperatures to 300'F. It has been shown, that the presence of water will materially affect thephase equilibrium of hydrocarbon systems. In order to make experimental studieson the quantitative effect of the presence of water in naturally-occurringhydrocarbon systems, it is desirable to have data available on binaryhydrocarbon-water systems. T.P. 2778
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