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论文类型：期刊论文

发表时间：2020-01-01

发表刊物：JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING

收录刊物：EI、SCIE

卷号：73

ISSN号：1875-5100

关键字：Enhanced gas recovery; CO2-CH4; Dispersion; Reservoir conditions

摘要：In this study, experimental investigation of gas dispersion in a broader temperature and pressure range were performed in both horizontal and vertical orientations. Three types of glass sand with different particle sizes were used in experiments at temperatures 60-150 degrees C and pressures 10-30 MPa. The effects of temperature, pressure, injection flow rate, gravity, and sand particle size on the dispersion under reservoir conditions were studied in detail. The results indicate that dispersion was considerably affected by temperature in the studied range. High injection flow rates also resulted in larger dispersion coefficients and early breakthrough behavior. In supercritical region, the effects of pressure on dispersion in horizontal and vertical orientations were completely opposite in the presence of gravity, with the horizontal dispersion coefficients being much higher than the vertical ones. In addition, dispersion coefficients exhibited weak dependence on the particle size in the unconsolidated cores at low interstitial velocity.