SAGD开发效果综合评价新方法
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摘要
为了实现对SAGD生产过程和开发效果的快速评价,利用油藏工程方法,结合SAGD生产过程中的实际注采动态数据,推导了6个SAGD开发效果评价指标模型,包括瞬时汽油比、累积汽油比、累积采注比、累积水汽比、含水率和蒸汽累积滞留比。在给定极限瞬时汽油比的条件下,得到了不同预测采收率下评价指标与采出程度变化关系标准模板,形成一套可推广的SAGD生产过程和开发效果评价方法。将该方法应用于加拿大长湖油田泄油区15,结果表明:瞬时汽油比、累积采注比和累积水汽比3个评价指标模型可动态表征层间高含水层和顶水层对生产效果的影响。在初始标定采收率为73%的基础上,若后续采取调整优化,预测采收率可提升至80%。
In order to quickly evaluate the production process and the development result of SAGD,six mathematical models which can be used as indexes to evaluate SAGD performance were proposed based on the injection and production data during SAGD and by using reservoir engineering methods.These six models include instantaneous steam oil ratio,cumulative steam oil ratio,cumulative production injection ratio,cumulative water steam ratio,water cut and cumulative steam retention ratio.Under the determined extreme instantaneous steam oil ratio,the variation between the degree of recovery factor and above evaluation indexes under different forecasting final-recovery factor were obtained to form standard templates.Then a promoted method used to evaluate SAGD development process and result was formed.This method was applied to the drainage area 15 of Long Lake Oilfield,Canada.The results show that the models of the instantaneous steam oil ratio,the cumulative production injection ratio and the cumulative water steam ratio can be used to dynamically characterize the effect of high water cut zone and top water zone on production.On the basis of initial recovery factor of 73%,the finally forecasted recovery factor can be increased to 80% if further adjustment methods are conducted.
In order to quickly evaluate the production process and the development result of SAGD,six mathematical models which can be used as indexes to evaluate SAGD performance were proposed based on the injection and production data during SAGD and by using reservoir engineering methods.These six models include instantaneous steam oil ratio,cumulative steam oil ratio,cumulative production injection ratio,cumulative water steam ratio,water cut and cumulative steam retention ratio.Under the determined extreme instantaneous steam oil ratio,the variation between the degree of recovery factor and above evaluation indexes under different forecasting final-recovery factor were obtained to form standard templates.Then a promoted method used to evaluate SAGD development process and result was formed.This method was applied to the drainage area 15 of Long Lake Oilfield,Canada.The results show that the models of the instantaneous steam oil ratio,the cumulative production injection ratio and the cumulative water steam ratio can be used to dynamically characterize the effect of high water cut zone and top water zone on production.On the basis of initial recovery factor of 73%,the finally forecasted recovery factor can be increased to 80% if further adjustment methods are conducted.
引文
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[8]王大为,吴婷婷,葛涛涛,等.强底水特稠油油藏蒸汽辅助重力泄油物理模拟[J].新疆石油天然气,2018,14(2):49-53,67.WANG Dawei,WU Tingting,GE Taotao,et al.Physical simulation of SAGD for extra heavy oil reservoir with strong bottom water[J].Xinjiang Oil&Gas,2018,14(2):49-53,67.
[9]YANG G,BUTLER R M.Effects of reservoir heterogeneities on heavy oil recovery by steam-assisted gravity drainage[J].Journal of Canadian Petroleum Technology,1992,31(8):37-43.
[10]POOLADI-DARVISH M,MATTAR L.SAGD operations in the presence of overlying gas cap and water layer-effect of shale layers[J].Journal of Canadian Petroleum Technology,2002,41(6):40-51.
[11]谢华锋,王健,黄海平,等.储层流体非均质性对加拿大油砂热采的影响[J].油气地质与采收率,2016,23(6):94-98,104.XIE Huafeng,WANG Jian,HUANG Haiping,et al.Influence of fluid heterogeneity on SAGD in Canadian oil sands[J].Petroleum Geology and Recovery Efficiency,2016,23(6):94-98,104.
[12]魏绍蕾,程林松,张辉登,等.夹层对加拿大麦凯河油砂区块双水平井蒸汽辅助重力泄油开发的影响[J].油气地质与采收率,2016,23(2):62-69.WEI Shaolei,CHENG Linsong,ZHANG Huideng,et al.Physical simulation of the interlayer effect on SAGD production by dual horizontal well in Mackay River oil sands block,Canada[J].Petroleum Geology and Recovery Efficiency,2016,23(2):62-69.
[13]张洪源,李婷,解阳波,等.夹层对蒸汽辅助重力泄油的影响[J].特种油气藏,2017,24(5):120-125.ZHANG Hongyuan,LI Ting,XIE Yangbo,et al.Impacts of interlayers on SAGD[J].Special Oil&Gas Reservoirs,2017,24(5):120-125.
[14]王传飞,吴光焕,韦涛,等.薄层特超稠油油藏氮气与降粘剂联合蒸汽辅助重力泄油物理模拟实验[J].油气地质与采收率,2017,24(1):80-85.WANG Chuanfei,WU Guanghuan,WEI Tao,et al.Physical simulation experiment of nitrogen gas sand dissolve solvent aided SAGD for thin formation and extra-super heavy oil reservoir[J].Petroleum Geology and Recovery Efficiency,2017,24(1):80-85.
[15]DENNEY D.Dynamic economic indicator to evaluate SAGD performance[J].Journal of Petroleum Technology,2006,58(12):64-67.
[16]SHIN H.A reservoir economic indicator to evaluate a SAGD project[C].Calgary:Canadian International Petroleum Conference,2008.
[17]刘慧卿.热力采油原理与设计[M].北京:石油工业出版社,2013:110-111.LIU Huiqing.Principle and design of thermal recovery[M].Beijing:Petroleum Industry Press,2013:110-111.
[2]AL BAHLANI A M,BABADAGLI T.A critical review of the status of SAGD:Where are we and what is next[C].Bakersfield:SPEWestern Regional and Pacific Section,2008.
[3]FAROUQ Ali S M.Life after SAGD-20 years later[C].Anchorage:SPE Western Regional Meeting,2016.
[4]赵庆辉,刘其成,于涛,等.蒸汽辅助重力泄油蒸汽腔发育特征研究[J].西南石油大学学报:自然科学版,2008,30(4):123-126.ZHAO Qinghui,LIU Qicheng,YU Tao,et al.Research on the characteristics of steam chamber development of steam-assisted gravity drainage[J].Journal of Southwest Petroleum University:Science&Technology Edition,2008,30(4):123-126.
[5]石兰香,李秀峦,马德胜,等.快速均匀启动技术改善蒸汽辅助重力泄油预热效果[J].油气地质与采收率,2017,24(4):94-98.SHI Lanxiang,LI Xiuluan,MA Desheng,et al.Effect of fast and uniform start-up enhancement technology on preheating performance of SAGD[J].Petroleum Geology and Recovery Efficiency,2017,24(4):94-98.
[6]何万军,木合塔尔,董宏,等.风城油田重37井区SAGD开发提高采收率技术[J].新疆石油地质,2015,36(4):483-486.HE Wanjun,MUHETAER,DONG Hong,et al.EOR technologies of SAGD development in Zhong-37 wellblock,Fengcheng oilfield,Junggar basin[J].Xinjiang Petroleum Geology,2015,36(4):483-486.
[7]杨智,赵睿,高志谦,等.浅层超稠油双水平井SAGD立体井网开发模式研究[J].特种油气藏,2015,22(6):104-107.YANG Zhi,ZHAO Rui,GAO Zhiqian,et al.Study on SAGD stereo well pattern development mode of dual horizontal wells for shallow extra heavy oil[J].Special Oil&Gas Reservoirs,2015,22(6):104-107.
[8]王大为,吴婷婷,葛涛涛,等.强底水特稠油油藏蒸汽辅助重力泄油物理模拟[J].新疆石油天然气,2018,14(2):49-53,67.WANG Dawei,WU Tingting,GE Taotao,et al.Physical simulation of SAGD for extra heavy oil reservoir with strong bottom water[J].Xinjiang Oil&Gas,2018,14(2):49-53,67.
[9]YANG G,BUTLER R M.Effects of reservoir heterogeneities on heavy oil recovery by steam-assisted gravity drainage[J].Journal of Canadian Petroleum Technology,1992,31(8):37-43.
[10]POOLADI-DARVISH M,MATTAR L.SAGD operations in the presence of overlying gas cap and water layer-effect of shale layers[J].Journal of Canadian Petroleum Technology,2002,41(6):40-51.
[11]谢华锋,王健,黄海平,等.储层流体非均质性对加拿大油砂热采的影响[J].油气地质与采收率,2016,23(6):94-98,104.XIE Huafeng,WANG Jian,HUANG Haiping,et al.Influence of fluid heterogeneity on SAGD in Canadian oil sands[J].Petroleum Geology and Recovery Efficiency,2016,23(6):94-98,104.
[12]魏绍蕾,程林松,张辉登,等.夹层对加拿大麦凯河油砂区块双水平井蒸汽辅助重力泄油开发的影响[J].油气地质与采收率,2016,23(2):62-69.WEI Shaolei,CHENG Linsong,ZHANG Huideng,et al.Physical simulation of the interlayer effect on SAGD production by dual horizontal well in Mackay River oil sands block,Canada[J].Petroleum Geology and Recovery Efficiency,2016,23(2):62-69.
[13]张洪源,李婷,解阳波,等.夹层对蒸汽辅助重力泄油的影响[J].特种油气藏,2017,24(5):120-125.ZHANG Hongyuan,LI Ting,XIE Yangbo,et al.Impacts of interlayers on SAGD[J].Special Oil&Gas Reservoirs,2017,24(5):120-125.
[14]王传飞,吴光焕,韦涛,等.薄层特超稠油油藏氮气与降粘剂联合蒸汽辅助重力泄油物理模拟实验[J].油气地质与采收率,2017,24(1):80-85.WANG Chuanfei,WU Guanghuan,WEI Tao,et al.Physical simulation experiment of nitrogen gas sand dissolve solvent aided SAGD for thin formation and extra-super heavy oil reservoir[J].Petroleum Geology and Recovery Efficiency,2017,24(1):80-85.
[15]DENNEY D.Dynamic economic indicator to evaluate SAGD performance[J].Journal of Petroleum Technology,2006,58(12):64-67.
[16]SHIN H.A reservoir economic indicator to evaluate a SAGD project[C].Calgary:Canadian International Petroleum Conference,2008.
[17]刘慧卿.热力采油原理与设计[M].北京:石油工业出版社,2013:110-111.LIU Huiqing.Principle and design of thermal recovery[M].Beijing:Petroleum Industry Press,2013:110-111.