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Experimental Study on Effect of Additive on Surface Tension of Hydrate Solution

Yu Huijun (SINOPEC Pipeline Storage and Transportation Company,Xuzhou,Jiangsu,221008,China)  
The gas hydrate has unique physicochemical properties and a series of high- tech application technologies can be developed from the properties. However,all application technologies are still in laboratory investigation stage due to slow rate,high temperature and pressure conditions and low actual gas storage capacity during hydrate formation. Therefore,it is critical to study on the hydrate formation promotion technology. Test are effects of such new additivesCTAB,P123 and Ss on hydrate solution surface tension in different temperature and concentration conditions and judged are quantitative relations offacilitation and surface tension ofsuch additives in hydrate generation. Studyresults showthat CTAB has the best effect in surface tension decrease(300mg/kg),and then P123(500mg/kg)and Ss(300mg/kg)in proper order. This studyprovides theoretical and data supports for future researches on hydrate generation promotion.
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