双水平井蒸汽辅助重力泄油蒸汽腔扩展速度计算模型及其应用
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摘要
蒸汽腔发育扩展是蒸汽辅助重力泄油(SAGD)开发成败的重要特征,蒸汽腔扩展速度是评价蒸汽腔发育扩展情况的关键指标。以SAGD技术理论与传热学原理为基础,提出观察井温度法和蒸汽腔边缘法2种计算模型计算蒸汽腔水平扩展速度;根据新疆风城超稠油SAGD典型区块生产监测数据和数值模型计算结果,明确了不同阶段蒸汽腔发育形态和观察井的温度变化规律;利用观察井温度数据进行了蒸汽腔扩展速度分析,并采用不同时间蒸汽腔的扩展速度预测了蒸汽腔边缘泄油带温度分布和SAGD产量。研究表明,观察井测温曲线高温带的温度函数与测深呈线性关系,该特征段可用于计算泄油界面倾斜角、蒸汽腔扩展边缘和蒸汽腔扩展速度等关键参数,经实际生产数据验证,观察井温度法和蒸汽腔边缘法2种模型计算蒸汽腔扩展速度结果可靠,可为SAGD的高效开发提供理论支持。
The development of steam chamber can be used to evaluate steam-assisted gravity drainage(SAGD) performance. The velocity of steam chamber expanding is the key parameter for evaluating the development of steam chamber. Based on SAGD technology theory and heat transfer theory, two calculation model methods, observation well temperature method and steam chamber edge method for estimating the horizontal expanding velocity of steam chamber, were presented. Through analyzing the monitoring data and numerical simulation results of a typical super heavy oil block developed by SAGD in Fengcheng oilfield in Xinjiang, NW China, the development patterns of steam chamber and temperature variation law in the observation well at different stages are determined. The observed temperature data was used to calculate steam chamber expanding velocity. The calculated chamber velocity at different time was applied to predict the temperature distribution of oil drainage zone at the edge of steam chamber and SAGD oil rate. The results indicate that temperature function of high temperature zone in the observation well temperature curve has a linear relationship with measuring depth.The characteristic section can be used to calculate key parameters such as the angle of the drainage interface, expanding edge and velocity of steam chamber. The field production data verify that the results of the two proposed methods of steam chamber growth are reliable and practical, which can provide theoretical support for the efficient development of SAGD.
The development of steam chamber can be used to evaluate steam-assisted gravity drainage(SAGD) performance. The velocity of steam chamber expanding is the key parameter for evaluating the development of steam chamber. Based on SAGD technology theory and heat transfer theory, two calculation model methods, observation well temperature method and steam chamber edge method for estimating the horizontal expanding velocity of steam chamber, were presented. Through analyzing the monitoring data and numerical simulation results of a typical super heavy oil block developed by SAGD in Fengcheng oilfield in Xinjiang, NW China, the development patterns of steam chamber and temperature variation law in the observation well at different stages are determined. The observed temperature data was used to calculate steam chamber expanding velocity. The calculated chamber velocity at different time was applied to predict the temperature distribution of oil drainage zone at the edge of steam chamber and SAGD oil rate. The results indicate that temperature function of high temperature zone in the observation well temperature curve has a linear relationship with measuring depth.The characteristic section can be used to calculate key parameters such as the angle of the drainage interface, expanding edge and velocity of steam chamber. The field production data verify that the results of the two proposed methods of steam chamber growth are reliable and practical, which can provide theoretical support for the efficient development of SAGD.
引文
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[13]黄世军,熊浩,马奎前,等.考虑沿程非均匀吸汽下SAGD产能预测模型[J].中国石油大学学报(自然科学版),2017,41(4):107-115.HUANG Shijun,XIONG Hao,MA Kuiqian,et al.A mathematical model for productivity prediction of SAGD process considering non-uniform steam distribution[J].Journal of China University of Petroleum(Natural Science Edition),2017,41(4):107-115.
[14]杨立强,陈月明,王宏远,等.超稠油直井-水平井组合蒸汽辅助重力泄油物理和数值模拟[J].中国石油大学学报(自然科学版),2007,31(4):64-69.YANG liqiang,CHEN yueming,WANG Hongyuan,et al.Physical and numerical simulation of steam assisted gravity with vertical and horizontal well combination in extra heavy oil reservoir[J].Journal of China University of Petroleum(Natural Science Edition),2007,31(4):64-69.
[15]MAZDAIRANI,MARYA C.Discussion on the effects of temperature on thermal properties in the steam-assisted-gravity-drainage(SAGD)process.Part 1:Thermal conductivity[R].SPE 170064-MS,2014.
[16]范杰,李相方.蒸汽辅助重力泄油蒸汽腔前缘传热模型研究[J].科学技术与工程,2016,16(3):42-47.FAN Jie,LI Xiangfang.The research of heat transfer on the front of steam chamber for steam assisted gravity drainage[J].Science Technology and Engineering,2016,16(3):42-47.
[17]陈雄,贾永禄,桑林翔,等.一种确定蒸汽重力采油(SAGD)蒸汽腔前缘发育速度及范围的新方法[J].油气藏评价与开发,2016,6(1):36-39.CHEN Xiong,JIA Yonglu,SANG Linxiang,et al.A new method of calculating velocity and scope of steam chamber for SAGD[J].Reservoir Evaluation and Development,2016,6(1):36-39.
[18]陈月明.注蒸汽热力采油[M].东营:中国石油大学出版社,1996:21-22.CHEN Yueming.Thermal recovery on steam injection[M].Dongying:China University of Petroleum Press,1996:21-22.
[2]BUTLER R M.A new approach to the modelling of steam-assisted gravity drainage[J].Journal of Canadian Petroleum Technology,1985,24(3):42-51.
[3]WEI S,CHENG L,HUANG W,et al.Prediction for steam chamber development and production performance in SAGD process[J].Journal of Natural Gas Science&Engineering,2014,19(7):303-310.
[4]思娜,安雷,邓辉,等.SAGD重油、油砂开采技术的创新进展及思考[J].石油钻采工艺,2016,38(1):98-104.SI Na,AN Lei,DENG Hui,et al.Innovation progress and thinking of SAGD technology in heavy oil and oil sand[J].Oil Drilling&Production Technology,2016,38(1):98-104.
[5]孙新革,何万军,胡筱波,等.超稠油双水平井蒸汽辅助重力泄油不同开采阶段参数优化[J].新疆石油地质,2012,33(6):697-699.SUN Xinge,HE Wanjun,HU Xiaobo,et al.Parameters optimization of different production stages by dual-horizontal well SAGD process for super-heavy oil reservoir[J].Xinjiang Peroleum Geology,2012,33(6):697-699.
[6]柳潇雄,蒋有伟,吴永彬,等.双水平井蒸汽辅助重力泄油恒温电预热数学模型与指标预测[J].石油勘探与开发,2018,45(5):839-846.LIU Xiaoxiong,JIANG Youwei,WU Yongbin,et al.A mathematical model and the indicator prediction in constant temperature electric heating of dual-horizontal-well SAGD start-up[J].Petroleum Exploration and Development,2018,45(5):839-846.
[7]梁光跃,刘尚奇,沈平平,等.油砂蒸汽辅助重力泄油汽液界面智能调控模型优选[J].石油勘探与开发,2016,43(2):275-280.LIANG Guangyue,LIU Shangqi,SHEN Pingping,et al.A new optimization method for steam-liquid level intelligent control model in oil sands steam-assisted gravity drainage(SAGD)process[J].Petroleum Exploration and Development,2016,43(2):275-280.
[8]武毅,张丽萍,李晓漫,等.超稠油SAGD开发蒸汽腔形成及扩展规律研究[J].特种油气藏,2007,14(6):40-43.WU Yi,ZHANG Liping,LI Xiaoman,et al.Study of steam chamber growth and expansion in SAGD for ultra heavy oil[J].Special Oil and Gas Reservoirs,2007,14(6):40-43.
[9]李秀峦,刘昊,罗健,等.非均质油藏双水平井SAGD三维物理模拟[J].石油学报,2014,35(3):536-542.LI Xiuluan,LIU Hao,LUO Jian,et al.3D physical simulation on dual horizontal well SAGD in heterogeneous reservoir[J].Acta Petrolei Sinca,2014,35(3):536-542.
[10]马德胜,郭嘉,昝成,等.蒸汽辅助重力泄油改善汽腔发育均匀性物理模拟[J].石油勘探与开发,2013,40(2):188-193.MA Desheng,GUO Jia,ZAN Cheng,et al.Physical simulation of improving the uniformity of steam chamber growth in the steam assisted gravity drainage[J].Petroleum Exploration and Development,2013,40(2):188-193.
[11]田杰,刘慧卿,庞占喜,等.高压环境双水平井SAGD三维物理模拟实验[J].石油学报,2017,38(4):453-460.TIAN Jie,LIU Huiqing,PANG Zhanxi,et al.Experiment of 3Dphysical simulation on dual-horizontal well SAGD under high pressure condition[J].Acta Petrolei Sinca,2017,38(4):453-460.
[12]李兆敏,鹿腾,陶磊,等.超稠油水平井CO2与降黏剂辅助蒸汽吞吐技术[J].石油勘探与开发,2011,38(5):600-605.LI Zhaomin,LU Teng,TAO Lei,et al.CO2 and viscosity breaker assisted steam huff and puff technology for horizontal wells in a super-heavy oil reservoir[J].Petroleum Exploration and Development,2011,38(5):600-605.
[13]黄世军,熊浩,马奎前,等.考虑沿程非均匀吸汽下SAGD产能预测模型[J].中国石油大学学报(自然科学版),2017,41(4):107-115.HUANG Shijun,XIONG Hao,MA Kuiqian,et al.A mathematical model for productivity prediction of SAGD process considering non-uniform steam distribution[J].Journal of China University of Petroleum(Natural Science Edition),2017,41(4):107-115.
[14]杨立强,陈月明,王宏远,等.超稠油直井-水平井组合蒸汽辅助重力泄油物理和数值模拟[J].中国石油大学学报(自然科学版),2007,31(4):64-69.YANG liqiang,CHEN yueming,WANG Hongyuan,et al.Physical and numerical simulation of steam assisted gravity with vertical and horizontal well combination in extra heavy oil reservoir[J].Journal of China University of Petroleum(Natural Science Edition),2007,31(4):64-69.
[15]MAZDAIRANI,MARYA C.Discussion on the effects of temperature on thermal properties in the steam-assisted-gravity-drainage(SAGD)process.Part 1:Thermal conductivity[R].SPE 170064-MS,2014.
[16]范杰,李相方.蒸汽辅助重力泄油蒸汽腔前缘传热模型研究[J].科学技术与工程,2016,16(3):42-47.FAN Jie,LI Xiangfang.The research of heat transfer on the front of steam chamber for steam assisted gravity drainage[J].Science Technology and Engineering,2016,16(3):42-47.
[17]陈雄,贾永禄,桑林翔,等.一种确定蒸汽重力采油(SAGD)蒸汽腔前缘发育速度及范围的新方法[J].油气藏评价与开发,2016,6(1):36-39.CHEN Xiong,JIA Yonglu,SANG Linxiang,et al.A new method of calculating velocity and scope of steam chamber for SAGD[J].Reservoir Evaluation and Development,2016,6(1):36-39.
[18]陈月明.注蒸汽热力采油[M].东营:中国石油大学出版社,1996:21-22.CHEN Yueming.Thermal recovery on steam injection[M].Dongying:China University of Petroleum Press,1996:21-22.
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