低渗透油藏微乳液驱配方优选及微观剩余油研究
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摘要
根据正交设计实验优选出最佳微乳液体系,宏观上通过天然岩心微乳液驱油实验,验证微乳液提高采收率的效果;微观上利用光刻玻璃模型进行微乳液驱可视化微观驱油实验,研究微观剩余油的类型和运移过程,通过分析各类剩余油的动用比例研究剩余油的驱油机理。微乳液驱油实验结果表明,与水驱相比,当岩心渗透率从1.78×10~(-3)μm~2增大到29.11×10~(-3)μm~2时,微乳液驱采收率增幅从5.45百分点增大到12.14百分点,与微观实验结果相一致,证明了微乳液可以显著提高采收率。微观剩余油类型分为簇状、柱状、盲端状、油滴状、膜状,其中簇状剩余油和油滴状剩余油的动用比例最高,驱替效果较好,而膜状剩余油的动用比例最低,驱替效果较差。
According to the orthogonal design experiment,the best microemulsion system was selected.The natural rock core displacement tests were conducted to verify the improvement of oil recovery by microemulsion techniques.The lithographic glass model was used to conduct the visualization test of the remaining oil micro-displacement process and its mechanism.The results showed that compared with water flooding,when the permeability of rock core increases from 1.78×10~(-3)μm~2 to 29.11×10~(-3)μm~2,the enhanced oil recovery(EOR)by microemulsion is from 5.45 percentage points to 12.14 percentage points,which is consistent with the results of lithographic glass model tests.The five micro-residual oil types are observed:cluster type,column type,blind-end,droplets type,and oil film type.Among them,the flooding proportions of the cluster and droplet residual oil are the highest,the displacement effect is better,and the oil film residual oil is the lowest,and the displacement effect is poor.
According to the orthogonal design experiment,the best microemulsion system was selected.The natural rock core displacement tests were conducted to verify the improvement of oil recovery by microemulsion techniques.The lithographic glass model was used to conduct the visualization test of the remaining oil micro-displacement process and its mechanism.The results showed that compared with water flooding,when the permeability of rock core increases from 1.78×10~(-3)μm~2 to 29.11×10~(-3)μm~2,the enhanced oil recovery(EOR)by microemulsion is from 5.45 percentage points to 12.14 percentage points,which is consistent with the results of lithographic glass model tests.The five micro-residual oil types are observed:cluster type,column type,blind-end,droplets type,and oil film type.Among them,the flooding proportions of the cluster and droplet residual oil are the highest,the displacement effect is better,and the oil film residual oil is the lowest,and the displacement effect is poor.
引文
[1]殷代印,房雨佳,辛勇亮.低渗透油藏改变驱替方向微观机理研究[J].特种油气藏,2017,24(3):59-63
[2]刘日强.低渗透油藏注气提高采收率方法及应用综述[J].吐哈油气,2004,9(2):112-116
[3]殷代印,房雨佳.三元复合驱微观剩余油驱替机理及动用比例研究[J].石油化工高等学校学报,2017,30(1):18-22
[4]王伟楠.二类油层三元复合驱后微观剩余油变化规律[D].大庆:东北石油大学,2015
[5]赵红.杏南开发区微观剩余油分布特征研究[D].杭州:浙江大学,2011
[6]杨珂,徐守余.微观剩余油实验方法研究[J].断块油气田,2009,16(4):75-77
[7]鞠野.一元/二元/三元驱油体系微观驱油机理研究[D].大庆:大庆石油学院,2006
[8]周冰灵.微乳液的制备及其驱油效果评价[D].大庆:东北石油大学,2016
[9]高博禹,彭仕宓,王建波.剩余油形成与分布的研究现状及发展趋势[J].特种油气藏,2004,11(4):7-11
[10]Zhao Xiaoliang,Rui Zhenhua,Liao Xinwei.Case studies on the CO2storage and EOR in heterogeneous,highly water-saturated,and extra-low permeability Chinese reservoirs[J].Journal of Natural Gas Science and Engineering,2016,27(29):275-283
[11]王雷,窦之林,林涛,等.缝洞型油藏注水驱油可视化物理模拟研究[J].西南石油大学学报(自然科学版),2011,33(2):121-124
[12]陈涛平,宋文玲,高明,等.超低界面张力体系驱油方式与微观驱油效果[J].科学技术与工程,2010,10(7):259-262
[13]殷代印,项俊辉,房雨佳.低渗透油藏微乳液驱微观剩余油驱替机理研究[J].特种油气藏,2017,24(5)136-140
[14]张文会.水驱老油田微观孔隙变化及剩余油分布的影响因素研究[D].大庆:东北石油大学,2015
[15]王克亮,申彤,刘海鸥,等.不同驱油体系在贝雷岩心中的驱替特征[J].大庆石油地质与开发,2017,36(2):90-94
[16]王启民,隋军,冀宝发,等.大庆油田三次采油技术的实践与认识[J].大庆石油地质与开发,2001,20(2):1-8
[17]李建路,曹铁,鹿守亮,等.三元复合驱室内物理模拟实验研究:天然岩心与人造岩心的差异[J].大庆石油地质与开发,2003,22(4):64-66
[18]Rudin J,Bernard C,Wasan D T.Effect of added surfactant on in-terfacial tension and spontaneous emulsification in alkali/acidic oil systems[J].Industrial&Engineering Chemistry Research,1994,33(5):1150-1158
[2]刘日强.低渗透油藏注气提高采收率方法及应用综述[J].吐哈油气,2004,9(2):112-116
[3]殷代印,房雨佳.三元复合驱微观剩余油驱替机理及动用比例研究[J].石油化工高等学校学报,2017,30(1):18-22
[4]王伟楠.二类油层三元复合驱后微观剩余油变化规律[D].大庆:东北石油大学,2015
[5]赵红.杏南开发区微观剩余油分布特征研究[D].杭州:浙江大学,2011
[6]杨珂,徐守余.微观剩余油实验方法研究[J].断块油气田,2009,16(4):75-77
[7]鞠野.一元/二元/三元驱油体系微观驱油机理研究[D].大庆:大庆石油学院,2006
[8]周冰灵.微乳液的制备及其驱油效果评价[D].大庆:东北石油大学,2016
[9]高博禹,彭仕宓,王建波.剩余油形成与分布的研究现状及发展趋势[J].特种油气藏,2004,11(4):7-11
[10]Zhao Xiaoliang,Rui Zhenhua,Liao Xinwei.Case studies on the CO2storage and EOR in heterogeneous,highly water-saturated,and extra-low permeability Chinese reservoirs[J].Journal of Natural Gas Science and Engineering,2016,27(29):275-283
[11]王雷,窦之林,林涛,等.缝洞型油藏注水驱油可视化物理模拟研究[J].西南石油大学学报(自然科学版),2011,33(2):121-124
[12]陈涛平,宋文玲,高明,等.超低界面张力体系驱油方式与微观驱油效果[J].科学技术与工程,2010,10(7):259-262
[13]殷代印,项俊辉,房雨佳.低渗透油藏微乳液驱微观剩余油驱替机理研究[J].特种油气藏,2017,24(5)136-140
[14]张文会.水驱老油田微观孔隙变化及剩余油分布的影响因素研究[D].大庆:东北石油大学,2015
[15]王克亮,申彤,刘海鸥,等.不同驱油体系在贝雷岩心中的驱替特征[J].大庆石油地质与开发,2017,36(2):90-94
[16]王启民,隋军,冀宝发,等.大庆油田三次采油技术的实践与认识[J].大庆石油地质与开发,2001,20(2):1-8
[17]李建路,曹铁,鹿守亮,等.三元复合驱室内物理模拟实验研究:天然岩心与人造岩心的差异[J].大庆石油地质与开发,2003,22(4):64-66
[18]Rudin J,Bernard C,Wasan D T.Effect of added surfactant on in-terfacial tension and spontaneous emulsification in alkali/acidic oil systems[J].Industrial&Engineering Chemistry Research,1994,33(5):1150-1158