【正文】
F下巖石類型對原油采收率的影響圖17 110176。F時注CO2驅(qū)替的流出物剖面圖15 110176。F下飽和CO2原油的粘度擬合圖12 巖心驅(qū)替實驗設(shè)備圖13 110176。F時原油密度擬合和粘度擬合圖10 110176。F下Ogallah原油CO2驅(qū)的膨脹或萃取曲線圖7 高壓粘度測量實驗設(shè)備圖8 110176。參考文獻[1]Ahosseini, A. and Scurto, A.: “Viscosity of ImidazoliumBased Ionic Liquids at Elevated Pressures: Cation and Anion Effects,”International Journal of Thermophysics, 2008. 29 (4), 12221243.[2]Franseen, E. K., Byrnes, A. P. Cansler, J. R. Steinhauff, D. M. and Carr, T. R.: “The Geology of Kansas ARBUCKLE GROUP,” CurrentResearch in Earth Sciences, Bulletin 250, part 2, 2004.[3]Grigg, . and Gregory, ., and Purkaple, .: “The Effect of Pressure on Improved Oil flood Recovery from Tertiary Gas Injection,”SPERE, August 1997, 179187.[4]ShyehYung, JG, J: “Mechanisms of Miscible Oil Recovery: Effects of Pressure on Miscible and NearMiscible Displacements of Oil byCarbon Dioxide,” paper SPE 22651 presented at 1991 Annual Technical Conference at Dallas, Texas, October 69.[5]Tsau, J. S., Bui, L. H., and Willhite, G. P.: “Swelling/Extraction Test of a Small Sample Size for Phase Behavior Study,” paper SPE129728 to be presented at the Improved Oil Recovery Symposium, Tulsa, OK. April 2428, 2010.[6]Wylie, P. and Mohanty, K. K.: “Effect of Wettability on Oil Recovery by Nearmiscible Gas Injection,” paper SPE 39620 presented at theImproved Oil Recovery Symposium, Tulsa, OK. April 1922, 1998.表1 Ogallah油罐原油的物性分子量 g/molAPI密度 () g/cc粘度 () cpC36+的分子量 g/ccC36+的密度 () g/cc表2 巖心的性質(zhì)類型Berea 砂巖Arbuckle白云巖Baker白云巖長度 cm截面積 表面積 cm2孔隙體積 cc孔隙度 %%%滲透率 mD表3 二次CO2驅(qū)Berea砂巖的結(jié)果數(shù)據(jù)壓力psigSwrSorw Sorco2Swf回收率 1(Sorco2/Sorw)9051104119813171413表4 三次CO2驅(qū)Arbuckle白云巖的結(jié)果數(shù)據(jù)壓力psigSwr