哈得逊油田东河砂岩微观剩余油形成机理
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摘要
为厘清哈得逊油田东河砂岩微观剩余油形成机理及三次采油的方向,利用岩心扫描电镜、铸体薄片、CT扫描及压汞测试等方法,在哈得逊油田东河砂岩微观非均质级次研究的基础上,通过微观刻蚀薄片水驱油实验和真实岩心水驱油CT扫描研究油水运动状态及微观剩余油形成机理。结果表明:研究区微观非均质性从级次上分为单一孔喉级、局部孔喉组合级与岩心孔喉连通级。油田生产压差形成的动力与毛细管力、黏滞力构成的阻力,以及注入水沿着孔喉中央的驱替速度与沿着孔喉表面的剥离速度的相对大小控制了油水的运动。微观剩余油形成机理为单一孔喉的孔内贯穿作用、润湿捕集作用、角隅滞留作用,局部孔喉组合的旁超作用、指进作用,以及岩心内部的窜流作用。指进作用造成的斑块状剩余油及窜流作用形成的连片富集型剩余油是研究区后期挖潜的重点。
In order to clarify the micro-remaining oil formation mechanism and the direction of tertiary oil recovery in Donghe sandstone in Hadeson oilfield. Based on the combination of scanning electronic microscope,casting slices,core CT scanning and mercury injection data,the microscopic heterogeneous grade of Donghe sandstone in Hadeson oilfield was investigated,and the formation mechanism of microscopic remaining oil was revealed by the analysis of oil and water movement state as well as displacement models experiments of CT scanning and micro etching. It is concluded that the microscopic heterogeneity of the study area is divided into single pore-throat level,partial pore-throat combinations level and pore-throat connectivity of a core sample level. The oil and water movement state are controlled by the relative size of driving force that composed of production pressure drop and resistance power that included capillary and viscous force,and displacing velocity along the center of pore throat and stripping velocity along the surface of pore throat. The formation mechanisms of microscopic remaining oil include the penetration、wetting trapping and cornering retention effect in a single pore-throat,the side surpass and fingering effect in partial pore-throat combinations,the breakthrough flow effect in a core sample. The plaque remaining oil caused by side surpass effect and flake enrichment remaining oil gave rise to breakthrough flow effect is the main target for the later exploitation.
In order to clarify the micro-remaining oil formation mechanism and the direction of tertiary oil recovery in Donghe sandstone in Hadeson oilfield. Based on the combination of scanning electronic microscope,casting slices,core CT scanning and mercury injection data,the microscopic heterogeneous grade of Donghe sandstone in Hadeson oilfield was investigated,and the formation mechanism of microscopic remaining oil was revealed by the analysis of oil and water movement state as well as displacement models experiments of CT scanning and micro etching. It is concluded that the microscopic heterogeneity of the study area is divided into single pore-throat level,partial pore-throat combinations level and pore-throat connectivity of a core sample level. The oil and water movement state are controlled by the relative size of driving force that composed of production pressure drop and resistance power that included capillary and viscous force,and displacing velocity along the center of pore throat and stripping velocity along the surface of pore throat. The formation mechanisms of microscopic remaining oil include the penetration、wetting trapping and cornering retention effect in a single pore-throat,the side surpass and fingering effect in partial pore-throat combinations,the breakthrough flow effect in a core sample. The plaque remaining oil caused by side surpass effect and flake enrichment remaining oil gave rise to breakthrough flow effect is the main target for the later exploitation.
引文
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4 张玮,张宁,王成胜,等.平面非均质性对渤海B油田注聚效果的影响实验研究.科学技术与工程,2017;17(10):182 —187Zhang Wei,Zhang Ning,Wang Chengsheng,et al.Experimental study on the effect of plane heterogeneity on polymer injection in Bohai B Oilfield.Science Technology and Engineering,2017;17(10):182 —187
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7 刘斌,李云鹏,喻秋兰,等.平面非均质性对聚驱及二元驱驱油效果的影响研究.科学技术与工程,2017;17(8):155—159Liu Bin,Li Yunpeng,Yu Qiulan,et al.Plane heterogeneity study on the impact of polymer flooding and binary compound flooding effect.Science Technology and Engineering,2017;17(8):155—159
8 何巧林,关增武,左小军,等.轮南2油田JIV油藏水驱实验及微观剩余油分布特征.新疆石油地质,2017;38(1):81—84He Qiaolin,Guan Zengwu,Zuo Xiaojun,et al.Waterflooding experiment and micro-distribution of remaining oil in JIV reservoir in Lunnan-2 Oilfield.Xinjiang Petroleum Geology,2017;38(1):81—84
9 Lun Z.Study on the microscopic residual oil of CO2flooding for extrahigh water-cut reservoirs.New Jersey:John Wiley&Sons,Inc,2016;319—329
10 Wu D,Ju B,Chen X,et al.Experimental evaluation of different strategies for improving oil recovery at high-water-cut by quantitative etched-glass micro-models.Energy Exploration&Exploitation,2016;34(4):586—605
11 孙龙德,江同文,徐汉林,等.塔里木盆地哈得逊油田非稳态油藏.石油勘探与开发,2009;36(1):62—67.Sun Longde,Jiang Tongwen,Xu Hanlin,et al.Unsteady reservoir in Hadson Oilfield,Tarim Basin.Petroleum Exploration and Development,2009;36(1):62—67
12 李国永,徐怀民,刘太勋,等.地层倾角测井沉积构造与层序界面识别.西南石油大学学报(自然科学版),2008;30(6):62 —66,207—208Li Guoyong,Xu Huaimin,Liu Taixun,et al.Sedimentary structure and sequence boundary identification based on formation diplog.Journal of Southwest Petroleum University(Science&Technology Edition),2008;30(6):62—66,207—208
13 申银民,贾进华,齐英敏,等.塔里木盆地上泥盆统-下石炭统东河砂岩沉积相与哈得逊油田的发现.古地理学报,2011;13(3):279—286Shen Yinmin,Jia Jinhua,Qi Yingmin,et al.Sedimentary facies of Donghe Sandstone in the Upper Devonian-Lower Carboniferous and discovery of Hadexun Oilfield in Tarim Basin.Journal of Palaeogeography,2011;13(3):279—286
14 韩如冰,刘强,江同文,等.钙质隔夹层特征、成因及分布——以塔里木盆地哈得油田东河砂岩为例.石油勘探与开发,2014;36(3):428—437Han Rubing,Liu Qiang,Jiang Tongwen,et al.Feature,origin and distribution of calcareous interlayers:A case of Donghe sandstone in Hade Oil Field,Tarim Basin.Petroleum Exploration and Development,2014;36(3):428—437
15 张水昌,张斌,杨海军,等.塔里木盆地喜马拉雅晚期油气藏调整与改造.石油勘探与开发,2012;39(6):668—680Zhang Shuichang,Zhang Bin,Yang Haijun,et al.Adjustment and alteration of hydrocarbon reservoirs during the late Himalayan period,Tarim Basin,NW China.Petroleum Exploration and Development,2012;39(6):668—680
16 刘强,余义常,江同文,等.哈得逊油田东河砂岩储层水淹变化机理研究.岩性油气藏,2017;29(2):150—159Liu Qiang,Yu Yichang,Jiang Tongwen,et al.The mechanism of reservoir transition through waterflooding of Donghe sandstone of Hadeson Oilfield.Lithologic Reservoirs,2017;29(2):150—159
17 胡勇,郭长敏,徐轩,等.砂岩气藏岩石孔喉结构及渗流特征.石油实验地质,2015;37(3):390—393Hu Yong,Guo Changmin,Xu Xuan,et al.Pore throat structure and flow characteristics of sandstone reservoirs.Petroleum Geology&Experiment,2015;37(3):390—393
18 安昊盈,侯吉瑞,程婷婷.自组装颗粒调驱体系渗透率适应性评价及调驱机理研究.科学技术与工程,2018;18(3):21—31An Haoying,Hou Jirui,Cheng Tingting.Permeability adaptability evaluation and plugging mechanism on self-assembled particles profile control system.Science Technology and Engineering,2018;18(3):21—31
19 汲国庭,李华斌,吴晓峰,等.弱凝胶封堵高渗透带性能及启动低渗层的条件.科学技术与工程,2017;17(1):198—203Ji Guoting,Li Huabin,Wu Xiaofeng,et al.Plugging performance of weak gel in high permeability zone and conditions for starting low permeability layer.Science Technology and Engineering,2017;17(1):198—203
2 康浩,高建,宋新民.基于CT技术评价水驱岩心储渗特征的方法.科学技术与工程,2016;16(15):169—173Kang Hao,Gao Jian,Song Xinmin.Evaluation on core seepage—flow characteristics in water flooding by CT technique.Science Technology and Engineering,2016;16(15):169—173
3 武楗棠,张政威,姜淑霞,等.微观非均质性对微观规模剩阿余油分布的影响.断块油气田,2005;12(3):10—12Wu Jiantang,Zhang Zhengwei,Jiang Shuxia,et al.Micro anisotropies influences distribution of micro scale residual oil.Fault-Block Oil&Gas Field,2005;12(3):10—12
4 张玮,张宁,王成胜,等.平面非均质性对渤海B油田注聚效果的影响实验研究.科学技术与工程,2017;17(10):182 —187Zhang Wei,Zhang Ning,Wang Chengsheng,et al.Experimental study on the effect of plane heterogeneity on polymer injection in Bohai B Oilfield.Science Technology and Engineering,2017;17(10):182 —187
5 许长福,刘红现,钱根宝,等.克拉玛依砾岩储集层微观水驱油机理.石油勘探与开发,2011;38(6):725—732Xu Changfu,Liu Hongxian,Qian Genbao,et al.Microcosmic mechanisms of water—Oil displacement in conglomerate reservoirs in Karamay Oilfield.Petroleum Exploration and Development,2011;38(6):725—732
6 杨珂,徐守余.微观剩余油实验方法研究.断块油气田,2009;16(4):75—77Yang Ke,Xu Shouyu.Experiment methods of microcosmic remaining oil.Fault-Block Oil&Gas Field,2009;16(4):75—77
7 刘斌,李云鹏,喻秋兰,等.平面非均质性对聚驱及二元驱驱油效果的影响研究.科学技术与工程,2017;17(8):155—159Liu Bin,Li Yunpeng,Yu Qiulan,et al.Plane heterogeneity study on the impact of polymer flooding and binary compound flooding effect.Science Technology and Engineering,2017;17(8):155—159
8 何巧林,关增武,左小军,等.轮南2油田JIV油藏水驱实验及微观剩余油分布特征.新疆石油地质,2017;38(1):81—84He Qiaolin,Guan Zengwu,Zuo Xiaojun,et al.Waterflooding experiment and micro-distribution of remaining oil in JIV reservoir in Lunnan-2 Oilfield.Xinjiang Petroleum Geology,2017;38(1):81—84
9 Lun Z.Study on the microscopic residual oil of CO2flooding for extrahigh water-cut reservoirs.New Jersey:John Wiley&Sons,Inc,2016;319—329
10 Wu D,Ju B,Chen X,et al.Experimental evaluation of different strategies for improving oil recovery at high-water-cut by quantitative etched-glass micro-models.Energy Exploration&Exploitation,2016;34(4):586—605
11 孙龙德,江同文,徐汉林,等.塔里木盆地哈得逊油田非稳态油藏.石油勘探与开发,2009;36(1):62—67.Sun Longde,Jiang Tongwen,Xu Hanlin,et al.Unsteady reservoir in Hadson Oilfield,Tarim Basin.Petroleum Exploration and Development,2009;36(1):62—67
12 李国永,徐怀民,刘太勋,等.地层倾角测井沉积构造与层序界面识别.西南石油大学学报(自然科学版),2008;30(6):62 —66,207—208Li Guoyong,Xu Huaimin,Liu Taixun,et al.Sedimentary structure and sequence boundary identification based on formation diplog.Journal of Southwest Petroleum University(Science&Technology Edition),2008;30(6):62—66,207—208
13 申银民,贾进华,齐英敏,等.塔里木盆地上泥盆统-下石炭统东河砂岩沉积相与哈得逊油田的发现.古地理学报,2011;13(3):279—286Shen Yinmin,Jia Jinhua,Qi Yingmin,et al.Sedimentary facies of Donghe Sandstone in the Upper Devonian-Lower Carboniferous and discovery of Hadexun Oilfield in Tarim Basin.Journal of Palaeogeography,2011;13(3):279—286
14 韩如冰,刘强,江同文,等.钙质隔夹层特征、成因及分布——以塔里木盆地哈得油田东河砂岩为例.石油勘探与开发,2014;36(3):428—437Han Rubing,Liu Qiang,Jiang Tongwen,et al.Feature,origin and distribution of calcareous interlayers:A case of Donghe sandstone in Hade Oil Field,Tarim Basin.Petroleum Exploration and Development,2014;36(3):428—437
15 张水昌,张斌,杨海军,等.塔里木盆地喜马拉雅晚期油气藏调整与改造.石油勘探与开发,2012;39(6):668—680Zhang Shuichang,Zhang Bin,Yang Haijun,et al.Adjustment and alteration of hydrocarbon reservoirs during the late Himalayan period,Tarim Basin,NW China.Petroleum Exploration and Development,2012;39(6):668—680
16 刘强,余义常,江同文,等.哈得逊油田东河砂岩储层水淹变化机理研究.岩性油气藏,2017;29(2):150—159Liu Qiang,Yu Yichang,Jiang Tongwen,et al.The mechanism of reservoir transition through waterflooding of Donghe sandstone of Hadeson Oilfield.Lithologic Reservoirs,2017;29(2):150—159
17 胡勇,郭长敏,徐轩,等.砂岩气藏岩石孔喉结构及渗流特征.石油实验地质,2015;37(3):390—393Hu Yong,Guo Changmin,Xu Xuan,et al.Pore throat structure and flow characteristics of sandstone reservoirs.Petroleum Geology&Experiment,2015;37(3):390—393
18 安昊盈,侯吉瑞,程婷婷.自组装颗粒调驱体系渗透率适应性评价及调驱机理研究.科学技术与工程,2018;18(3):21—31An Haoying,Hou Jirui,Cheng Tingting.Permeability adaptability evaluation and plugging mechanism on self-assembled particles profile control system.Science Technology and Engineering,2018;18(3):21—31
19 汲国庭,李华斌,吴晓峰,等.弱凝胶封堵高渗透带性能及启动低渗层的条件.科学技术与工程,2017;17(1):198—203Ji Guoting,Li Huabin,Wu Xiaofeng,et al.Plugging performance of weak gel in high permeability zone and conditions for starting low permeability layer.Science Technology and Engineering,2017;17(1):198—203