MODELING EXPERIMENT OF THE AMOUNT OF RELEASED WATER-SOLUBLE GAS CONTROLLED BY TEMPERATURE AND PRESSURE

Based on analysis of various factors affecting solubility of natural gas in formation water,the necessary geological conditions for releasing water soluble gas was studied.By experiment of physical modeling,it was observed that the amount of free gas from water soluble part was mainly controlled by temperature and pressure during its migration and a regress equation for describing free gas changes was proposed.The equation provided a solution in estimating the contribution of water soluble gas to a natural gas reservors.