二元复合驱体系优化及转注时机实验研究
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摘要
聚合物驱加剧了油藏的非均质性以及剩余油的启动难度,利用复合驱降低界面张力和流度控制协同作用能够进一步提高原油采收率。通过复配不同性能的复合体系进行室内驱油实验和转注时机研究。结果表明,复合体系中的流度控制能力和降低界面张力对驱油效果的贡献比为1.2:1.0,利用水驱特征和不同节点后续水驱特征公式的差异,建立了快速判断聚合物驱后复合体系的最佳转注时机,即后续水驱阶段即将失效阶段转注复合体系时效果最佳;实验研究的条件下优化出的复合体系是以流度控制能力为主、降低界面张力范围是10~(-1)～10~(-2) mN/m;聚合物驱结束后开始后续水驱0.14 PV是复合驱的最佳转注时机,适宜挖掘聚合物驱后的剩余油。
Polymer flooding exacerbates the heterogeneity of the reservoir and the difficulty of starting the sweep of the remaining oil.The use of combination flooding to reduce the synergy between interfacial tension and fluidity control can further enhance oil recovery.Indoor flooding experiments and converting time studies were carried out using combination systems with different performances.The results show that the ratio of fluidity control and the reduction in interfacial tension to the oil displacement effect in the combination system is 1.2:1.0.Using the difference between the water flooding characteristics and the subsequent water flooding characteristic formulas of different nodes,a quick determination of optimal converting time for polymer flooding was established;i.e.,the effect is best when the converting time occurs at the end of the polymer flooding and the beginning of the subsequent water flooding phase.The optimized compound system under the experimental conditions is primarily based on fluidity control,and the interfacial tension is reduced to 10~(-1)～10~(-2) mN/m.The best converting time for compound flooding is at the beginning of the subsequent water flooding 0.14 PV after the end of the polymer flooding,which is suitable for excavating the oil remaining after polymer flooding.
Polymer flooding exacerbates the heterogeneity of the reservoir and the difficulty of starting the sweep of the remaining oil.The use of combination flooding to reduce the synergy between interfacial tension and fluidity control can further enhance oil recovery.Indoor flooding experiments and converting time studies were carried out using combination systems with different performances.The results show that the ratio of fluidity control and the reduction in interfacial tension to the oil displacement effect in the combination system is 1.2:1.0.Using the difference between the water flooding characteristics and the subsequent water flooding characteristic formulas of different nodes,a quick determination of optimal converting time for polymer flooding was established;i.e.,the effect is best when the converting time occurs at the end of the polymer flooding and the beginning of the subsequent water flooding phase.The optimized compound system under the experimental conditions is primarily based on fluidity control,and the interfacial tension is reduced to 10~(-1)～10~(-2) mN/m.The best converting time for compound flooding is at the beginning of the subsequent water flooding 0.14 PV after the end of the polymer flooding,which is suitable for excavating the oil remaining after polymer flooding.
引文
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[18]施雷庭,朱诗杰,叶仲斌,等.矿化度对疏水缔合聚合物聚集行为的影响[J].精细石油化工,2017,34(5):9-14.doi:10.3969/j.issn.1003-9384.2017.05.003SHI Leiting,ZHU Shijie,YE Zhongbin,et al.Saline effect on hydrophobic associating polymer aggregation behavior[J].Speciality Petrochemicals,2017,34(5):9-14.doi:10.3969/j.issn.1003-9384.2017.05.003
[19]LI Ying,HE Xiujuan,CAO Xulong,et al. Molecular behavior and synergistic effects between sodium dodecylbenzene sulfonate and triton X-100 at oil/water interface[J].Journal of Colloid and Interface Science,2007.307(1):215-220.doi:10.1016/j.jcis.2006.11.026
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[21]杨二龙,贾聚全,齐士琨,等.海上稠油油田聚驱后二元复合驱注入时机与注入方式优选[J].油田化学,2015,32(2):259-262.YANG Erlong,JIA Juquan,QI Shikun,et al.Optimization on injection timing and pattern of binary composite flooding after polymer flooding of heavy oil in offshore field[J].Oilfield Chemistry,2015,32(2):259-262.
[22]曹杰.稠油油藏聚合物驱流度控制优化研究[D].成都:西南石油大学,2017.CAO Jie.Study on Optimization of polymer flooding control in heavy oil reservoirs[D].Chengdu:Southwest Petroleum University,2017.
[23]党耀国,刘思峰,刘斌,等.基于动态多指标灰色关联决策模型的研究[J].中国工程科学,2005,7(2):69-72.doi:10.3969/j.issn.1009-1742.2005.02.013DANG Yaoguo,LIU Sifeng,Liu Bin,et al.Study on grey incidence decision model of the dynamic multipleattribute[J].Engineering Sciences,2005,7(2):69-72.doi:10.3969/j.issn.1009-1742.2005.02.013
[24]陈金凤,李洁,张丽娟.大庆油田三元复合驱注人时机[J].大庆石油地质与开发,2015,34(5):91-96.doi:10.3969/J.ISSN.1000-3754.2015.05.017CHEN Jinfeng,LI Jie,ZHANG Lijuan.Injection opportunity of ASP flooding in Daqing Oilfield[J].Petroleum Geology and Oilfield Development in Daqing,2015.34(5):91-96.doi:10.3969/J.ISSN.1000-3754.2015.05.-017
[25]俞启泰.几种重要水驱特征曲线的油水渗流特征[J].石油学报,1999,20(1):56-60.doi:10.3321/j.issn:0253-2697.1999.01.011YU Qitai.Characteristics of oil-water seepage flow for several important water drive curves[J].Acta Petrolei Sinica,1999,20(1):56-60.doi:10.3321/j.issn:0253-2697.1999.01.011
[26]万吉业.水驱油田的驱替系列及其应用(Ⅱ)[J].石油勘探与开发,1983,1:44-48.WAN Jiye.A series of displacement characteristic curve and its application on the prediction performance of waterflooded oil reservoirs(Ⅱ)[J].Petroleum Exploration and Development,1983,1:44-48.
[27]邹存友,于立君.中国水驱砂岩油田含水与采出程度的量化关系[J].石油学报,2012,33(2):288-292.ZOU Cunyou,YU Lijun.A quantization relationship between water cut and degree of reserve recovery for waterflooding sandstone reservoirs in China[J].Acta Petrolei Sinica,2012,33(2):288-292.
[28]李国,大庆油田聚合物驱后利用残余聚合物挖潜剩余油技术探索[J].油田化学,2010,27(2):192-195.LI Guo.Research on tapping remaining oil with residual polymer after polymer flooding[J].Oilfield Chemistry,2010,27(2):192-195.
[2]关文婷.大庆油田聚合物驱油效果影响因素[J].大庆石油地质与开发,2014,33(2):111-115.doi:10.3969/J.-ISSN.1000-3754.2014.02.023GUAN Wenting.Influencing factors on the effects of polymer flooding Daqing Oilfield[J].Petroleum Geology&Oilfield Development in Daqing,2014,33(2):111-115.doi:10.3969/J.ISSN.1000-3754.2014.02.023
[3]张莉.胜利油田聚合物驱油技术经济潜力分析[J].石油勘探与开发,2007,34(1):79-82.doi:10.3321/j.-issn:1000-0747.2007.01.015ZHANG Li.Technical and economic potential for polymer flooding in Shengli Oilfield[J].Petroleum Exploration and Development,2007,34(1):79-82.doi:10.3321/j.-issn:1000-0747.2007.01.015
[4]叶仲斌.提高采收率原理[M].北京:石油工业出版社,2007.YE Zhongbin.Principle of enhanced recovery[M].Beijing:Petroleum Industry Press,2007.
[5]胡博仲.聚合物驱采油工程[M].北京:石油工业出版社,2004.HU Bozhong.Polymer flooding production engineering[M].Beijing:Petroleum Industry Press,2004.
[6]白振强,吴胜和,付志国.大庆油田聚合物驱后微观剩余油分布规律[J].石油学报,2013,34(5):924-931.doi:10.7623/syxb201305013BAI Zhenqiang,WU Shenghe,FU Zhiguo.The distribution of microcosmic remaining oils after polymer flooding in Daqing Oilfield[J].Acta Petrolei Sinica,2013,34(5):924-931.doi:10.7623/syxb201305013
[7]张继成,李朦,穆文志,等.聚合物驱后宏观和微观剩余油分布规律[J].齐齐哈尔大学学报,2008,24(1):31-36.doi:10.3969/j.issn.1007-984X.2008.01.013ZHANG Jicheng,LI Meng,MU Wenzhi,et al.Macroscopic and microscopic distribution of the remaining oil after polymer flooding[J].Journal of Qiqihar University,2008.24(1):31-36.doi:10.3969/j.issn.1007-984X.2008.01.013
[8]吴志伟.非均质油藏水驱后剩余油分布实验研究及潜力评价[J].科学技术与工程,2017,17(15):57-64.doi:10.3969/j.issn.1671-1815.2017.15.008WU Zhiwei.Experimental research and potential evaluation about remaining oil distribution after water flooding in heterogeneous reservoir[J].Science Technology and Engineering,2017,17(15):57-64.doi:10.3969/j.issn.1671-1815.2017.15.008
[9]叶银珠,王正波.聚驱后油藏剩余油分布数值模拟[J].吉林大学学报(地球科学版),2012,42(增刊1):119-126.YE Yinzhu,WANG Zhengbo.Reservoir residual oil distribution law after polymer flooding by numerical simulation method[J].Journal of Jilin Unviersity(Earth Science Edition),2012,42(S1):119-126.
[10]GAO Shutang,LI Huabin,LI Hongfu.Laboratory investigation of combination of alkaline-surfactant-polymer for Daqing EOR[C].SPE 27631-PA,1995.doi:10.-2118/27631-PA
[11]CHIOU C S,KELLERHALS G E.Polymer/surfactant transport in micellar flooding[C].SPE 9354-PA,1981.doi:10.2118/9354-PA
[12]刘晨,王凯,王业飞,等.针对A油田的抗温、抗盐聚合物/表面活性剂二元复合驱油体系研究[J].岩性油气藏,2017,29(3):152-158.doi:10.3969/j.issn.1673-8926.2017.03.019LIU Chen,WANG Kai,WANG Yefei,et al.Polymer/surfactant binary flooding in A Oilfield with high temperature and high salinity[J].Lithologic Reservoirs,2017.29(3):152-158.doi:10.3969/j.issn.1673-8926.2017.03.-019
[13]BRADFORD R A,COMPTON J D,HOLLIS P R.Operational problems in north burbank unit surfactant polymer project[C].SPE 7799-PA,1980.doi:10.2118/7799-PA
[14]张凤久,姜伟,孙福街,等.海上稠油聚合物驱关键技术研究与矿场试验[J].中国工程科学,2011,13(5):28-33.doi:10.3969/j.issn.1009-1742.2011.05.005ZHANG Fengjiu,JIANG Wei,SUN Fujie,et al.Key technology research and field test of offshore viscous polymer flooding[J].Engineering Sciences,2011,13(5):28-33.doi:10.3969/j.issn.1009-1742.2011.05.005
[15]朱诗杰.普通稠油油藏聚合物驱转注时机研究[D].成都:西南石油大学,2015.ZHU Shijie.Study on transfer injection timing of polymer flooding in ordinary heavy oil reservoir[D].Chengdu:Southwest Petroleum University,2015.
[16]何春百,张贤松,周薇,等.适用于高渗稠油的缔合型聚合物驱室内效果评价[J].油田化学,2011,28(2):145-147,176.HE Chunbai,ZHANG Xiansong,ZHOU Wei,et al.Evaluation of hydrophobically associating water-soluble polymer enhanced oil recovery on heavy oil reservoir[J].Oilfield Chemistry,2011,28(2):145-147,176.
[17]李诚.适用于普通稠油油藏的聚/表二元复合体系研究[D].成都:西南石油大学,2014.LI Cheng.Study on polymer/meter two element composite system for heavy oil reservoirs[D].Chengdu:Southwest Petroleum University,2014.
[18]施雷庭,朱诗杰,叶仲斌,等.矿化度对疏水缔合聚合物聚集行为的影响[J].精细石油化工,2017,34(5):9-14.doi:10.3969/j.issn.1003-9384.2017.05.003SHI Leiting,ZHU Shijie,YE Zhongbin,et al.Saline effect on hydrophobic associating polymer aggregation behavior[J].Speciality Petrochemicals,2017,34(5):9-14.doi:10.3969/j.issn.1003-9384.2017.05.003
[19]LI Ying,HE Xiujuan,CAO Xulong,et al. Molecular behavior and synergistic effects between sodium dodecylbenzene sulfonate and triton X-100 at oil/water interface[J].Journal of Colloid and Interface Science,2007.307(1):215-220.doi:10.1016/j.jcis.2006.11.026
[20]BAKSHIM S,KAURI.Aggregates of cationic surfactants and anionic polyelectr-olytes influenced by bulky head group modifications[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2003,224(1-3):185-197.doi:10.1016/S0927-7757(03)00269-3
[21]杨二龙,贾聚全,齐士琨,等.海上稠油油田聚驱后二元复合驱注入时机与注入方式优选[J].油田化学,2015,32(2):259-262.YANG Erlong,JIA Juquan,QI Shikun,et al.Optimization on injection timing and pattern of binary composite flooding after polymer flooding of heavy oil in offshore field[J].Oilfield Chemistry,2015,32(2):259-262.
[22]曹杰.稠油油藏聚合物驱流度控制优化研究[D].成都:西南石油大学,2017.CAO Jie.Study on Optimization of polymer flooding control in heavy oil reservoirs[D].Chengdu:Southwest Petroleum University,2017.
[23]党耀国,刘思峰,刘斌,等.基于动态多指标灰色关联决策模型的研究[J].中国工程科学,2005,7(2):69-72.doi:10.3969/j.issn.1009-1742.2005.02.013DANG Yaoguo,LIU Sifeng,Liu Bin,et al.Study on grey incidence decision model of the dynamic multipleattribute[J].Engineering Sciences,2005,7(2):69-72.doi:10.3969/j.issn.1009-1742.2005.02.013
[24]陈金凤,李洁,张丽娟.大庆油田三元复合驱注人时机[J].大庆石油地质与开发,2015,34(5):91-96.doi:10.3969/J.ISSN.1000-3754.2015.05.017CHEN Jinfeng,LI Jie,ZHANG Lijuan.Injection opportunity of ASP flooding in Daqing Oilfield[J].Petroleum Geology and Oilfield Development in Daqing,2015.34(5):91-96.doi:10.3969/J.ISSN.1000-3754.2015.05.-017
[25]俞启泰.几种重要水驱特征曲线的油水渗流特征[J].石油学报,1999,20(1):56-60.doi:10.3321/j.issn:0253-2697.1999.01.011YU Qitai.Characteristics of oil-water seepage flow for several important water drive curves[J].Acta Petrolei Sinica,1999,20(1):56-60.doi:10.3321/j.issn:0253-2697.1999.01.011
[26]万吉业.水驱油田的驱替系列及其应用(Ⅱ)[J].石油勘探与开发,1983,1:44-48.WAN Jiye.A series of displacement characteristic curve and its application on the prediction performance of waterflooded oil reservoirs(Ⅱ)[J].Petroleum Exploration and Development,1983,1:44-48.
[27]邹存友,于立君.中国水驱砂岩油田含水与采出程度的量化关系[J].石油学报,2012,33(2):288-292.ZOU Cunyou,YU Lijun.A quantization relationship between water cut and degree of reserve recovery for waterflooding sandstone reservoirs in China[J].Acta Petrolei Sinica,2012,33(2):288-292.
[28]李国,大庆油田聚合物驱后利用残余聚合物挖潜剩余油技术探索[J].油田化学,2010,27(2):192-195.LI Guo.Research on tapping remaining oil with residual polymer after polymer flooding[J].Oilfield Chemistry,2010,27(2):192-195.
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