冯玉军中低渗油藏化学驱用聚合物课件

冯玉军 中低渗油藏化学驱用聚合物的研究 Polymers used for EOR from Medium- K: 50-10010-3m20.235 Offshore off-shore fields0.172 Total1.605 Abundant resources to be recovered High temperature High salinity, high divalent-cation content Strong heterogeneity Challenges of CEOR in Shengli Oilfield, Sinopec Class I: laboratory study, 1960s; field trial, 1992; field extension, 1997 Class II: laboratory study, 1996; field trial, 1998; field scaled-up, 2005 Class III, , V and off-shore fields: R by-passing to the “thief” zone, how to block? CO2-thickening Surfactants Under High Pressure and High Temperature Effect of P No effect on the onset of the 1st plateau: even at 1 MPa, CO2 concentration is much higher than that of amine group The 2nd plateau: the higher the P, the earlier the onset because of the faster diffusion of CO2 Effect of T No effect on the onset of the 1st plateau, but the high the P, the later the 2nd plateau equilibrium of reaction and detachment? Switchable viscosity exposure to air over time 0 h5 h24 h48 h72 h96 h120 h ACKNOWLEDGMENTS PhD Students GUO Zanru CHU Zonglin ZHANG Yongmin HAN Yixiu SUN Yuhai CHEN Zhi LU Hongsheng CHEN Quansheng SU Xin LI Xiaolan LU Yongli WANG Jiuxia WU Yufeng XIE Zahnfeng WANG Yu HE Shuai LIU Hanbin ZHU Dingwei YIN Hongyao MU Meng Master Students FENG Dan WANG Yuejiao FEI Chenhong SHUAI Ya DONG Hongwei XIE C