延川地区储层特征及综合评价
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摘要
鄂尔多斯盆地延川地区延长组长2属于低孔—特低渗砂岩储层。在岩心观察及薄片分析的基础上,应用扫描电镜、高压压汞等多种实验手段,分析长2储层岩石学及微观孔喉结构等基础地质特征。结合研究区储层的特点,提出运用聚类分析—灰色关联法联合的方法对延长组长2段储层进行综合评价,建立了长2储层的分类评价标准,实现了长2段储层定量划分及评价。结果表明:长2储层以长石砂岩为主,储集空间类型较为多样,以粒间孔和溶蚀孔最为发育,分别约占总储集空间的92%和6%,孔-喉组合以中小孔细喉型—小孔特细喉型为主。长2段储层可划分为4种不同类型,其中Ⅰ类、Ⅱ类是最为有利的储层,Ⅲ类和Ⅳ类储层则属于不利储层。
The Chang 2 reservoir of the Yanchang Formation in the Yanchuan area of the Ordos Basin belongs to the ultra-low permeability sandstone reservoir.The geological characteristics of reservoir petrology and microscopic pore throat structure are analyzed by using experimental thin sections,scanning electron microscopy and high pressure mercury intrusion.On the basis of these,the cluster analysis—grey correlation method is proposed to comprehensively evaluate the Chang 2 reservoirs,and the classification evaluation criteria of the Chang 2 reservoirs are established.The results show that the Chang 2 reservoir is mainly composed of feldspar sandstone.There are various types of reservoir space,and the intergranular pores and dissolution pores are the most developed,accounting for 92% and 6% of the total storage space respectively.According to the standard,the Chang 2 reservoir is divided into four different types of reservoirs,of which Class I and Class II are the most favorable reservoirs,Class III and IV reservoirs are unfavorable reservoirs.
The Chang 2 reservoir of the Yanchang Formation in the Yanchuan area of the Ordos Basin belongs to the ultra-low permeability sandstone reservoir.The geological characteristics of reservoir petrology and microscopic pore throat structure are analyzed by using experimental thin sections,scanning electron microscopy and high pressure mercury intrusion.On the basis of these,the cluster analysis—grey correlation method is proposed to comprehensively evaluate the Chang 2 reservoirs,and the classification evaluation criteria of the Chang 2 reservoirs are established.The results show that the Chang 2 reservoir is mainly composed of feldspar sandstone.There are various types of reservoir space,and the intergranular pores and dissolution pores are the most developed,accounting for 92% and 6% of the total storage space respectively.According to the standard,the Chang 2 reservoir is divided into four different types of reservoirs,of which Class I and Class II are the most favorable reservoirs,Class III and IV reservoirs are unfavorable reservoirs.
引文
[1] 王道富.鄂尔多斯盆地特低渗透油田开发[M].北京:石油工业出版社,2007.WANG Dao-fu.Extra-low permeability oilfield development of Ordos Basin[M].Beijing:Petroleum Industry Press,2007.
[2] 武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,6(3):307-315.WU Fu-li,LI Wen-hou,LI Yu-hong,et al.Delta sediments and evolution of the Yanchang Formation of Upper Triassic in Ordos Basin[J].Journal of Palaeogeography,2004,6(3):307-315.
[3] 李文厚,庞军刚,曹红霞,等.鄂尔多斯盆地晚三叠世延长期沉积体系及岩相古地理演化[J].西北大学学报(自然科学版),2009,39(3):501-506.LI Wen-hou,PANG Jun-gang,CAO Hong-xia,et al.Depositional system and paleogeographic evolution of the Late Triassic Yanchang stage in Ordos Basin[J].Journal of Northwest University(Natural Science Edition),2009,39(3):501-506.
[4] 李杰,王凤琴,冷丹凤,等.青平川油田延长组长2沉积微相与油气分布[J].西安石油大学学报(自然科学版),2010,25(2):34-38.LI Jie,WANG Feng-qin,LENG Dan-feng,et al.Characteristics of sedimentary microfacies and oil&gas distribuition of Chang 2 reservoir of Yanchang Formation in Qingpingchuan Oilfield[J].Journal of Xi’an Shiyou University:Natural Science Edition,2010,25(2):34-38.
[5] 于珺,陈治军,李科社,等.青平川油田关庄地区延长组油气富集规律[J].西安科技大学学报,2015,35(2):202-207.YU Jun,CHEN Zhi-jun,LI Ke-she,et al.Hydrocarbon enrichment law of Yanchang Formation in Guanzhuang area of Qingpingchuan Oilfield[J].Journal of Xi’an University of Science and Technology,2015,35(2):202-207.
[6] 杨华,傅强,付金华.鄂尔多斯晚三叠世盆地沉积层序与油气成藏[M].北京:地质出版社,2007.YANG Hua,FU Qiang,FU Jin-hua.Sedimentary sequence and hydrocarbon accumulation of Late Triassic,Ordos Basin[M].Beijing:Geological Publishing House,2007.
[7] 李玉宏,张文,武富礼,等.陕西省铜川-黄陵地区延长组长7油页岩特征及资源潜力[J].西安科技大学学报,2016,36(5):647-656.LI Yu-hong,ZHANG Wen,WU Fu-li,et al.Characteristics and resource potential of oil shale in Chang 7 of Yanchang Formation in Tongchuan-Huangling area,Shaanxi provinces[J].Journal of Xi’an University of Science and Technology,2016,36(5):647-656.
[9] Liang T,Chang Y,Guo X,et al.Influence factors of single well’s productivity in the Bakken tight oil reservoir,Williston Basin[J].Petroleum Exploration and Development,2013,40(3):383-388.
[10] 杨正明,张英芝,郝明强,等.低渗透油田储层综合评价方法[J].石油学报,2006,27(2):64-67.YANG Zheng-ming,ZHANG Ying-zhi,HAO Ming-qiang,et al.Comprehensive evaluation of reservoir in low-permeability oilfields[J].Acta Petrolei Sinica,2006,27(2):64-67.
[11] 刘吉余,彭志春,郭晓博.灰色关联分析法在储层评价中的应用——以大庆萨尔图油田北二区为例[J].油气地质与采收率,2005,12(2):13-15.LIU JI-yu,PENG Zhi-chun,GUO Xiao-bo.Application of gray relation analysis reservoir evaluation:taking Bei 2 area,Saertu Oilfield,Daqing as an example[J].Petroleum Geology and Recovery Efficiency,2005,12(2):13-15.
[12] 涂乙,谢传礼,刘超,等.灰色关联分析法在青东凹陷储层评价中的应用[J].天然气地球科学,2012,23(2):381-386.TU Yi,XIE Chuan-li,LIU Chao,et al.Application of grey correlation analysis method in reservoir evaluation of Qingdong sag[J].Nature Gas Geoscience,2012,23(2):381-386.
[13] 白江,刘晓芳.陕北吴起地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(3):403-409.BAI Jiang,LIU Xiao-fang.Heterogeneity of the reservoir in the Yanchang Formation,Wuqi area[J].Journal of Xi’an University of Science and Technology,2017,37(3):403-409.
[14] 杨少春,杨兆林,胡红波.熵权非均质综合指数算法及其应用[J].中国石油大学学报(自然科学版),2004,28(1):18-21.YANG Shao-chun,YANG Zhao-lin,HU Hong-bo.An algorithm of heterogeneous synthetic index with entropy weight[J].Journal of China University of Petroleum(Edition of Natural Science),2004,28(1):18-21.
[15] 晁会霞,姚卫华,杨兴科,等.储层综合评价方法在白豹油田中的应用[J].西安石油大学学报(自然科学版),2010,25(6):1-7.CHAO Hui-xia,YAO Wei-hua,YANG Xing-ke,et al.Application of a comprehensive evaluation of method of reservoir in Bainao Oilfeild[J].Journal of Xi’an Shiyou University(Natural Science Edition),2010,25(6):1-7.
[16] 吴辰泓,张丽霞,高潮.下寺湾地区延长组陆相页岩孔隙特征及影响因素[J].西安科技大学学报,2018,38(6):990-998.WU Chen-hong,ZHANG Li-xia,GAO Chao.Pore characteristics and influential factors on lacustrine shale in Yanchang Formation,Xiasiwan area[J].Journal of Xi’an University of Science and Technology,2018,38(6):990-998.
[17] 石骁騑,石广仁,张庆春.模糊数学和灰色理论综合评判效果对比[J].石油勘探与开发,2002,29(2):84-85.SHI Xiao-fei,SHI Guang-ren,ZHANG Qing-chun.Comparison of integrated decision results between fuzzy mathematics and grey theory[J].Petroleum Exploration and Development,2002,29(2):84-85.
[18] 张梦婷,李文厚,白金莉,等.镇泾地区延长组长9段储层成岩作用特征[J].西安科技大学学报,2016,36(6):837-842.ZHANG Meng-ting,LI Wen-hou,BAI Jin-li,et al.Diagenesis characteristics of Chang 9 reservoir of Yanchang Formation in Zhenjing area[J].Journal of Xi’an University of Science and Technology,2016,36(6):837-842.
[19] 马东升,符超峰,李克永,等.延长地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(6):880-885.MA Dong-sheng,FU Chao-feng,LI Ke-yong,et al.Reservoir heterogeneity characteristics of Yanchang Formation in Yanchang region[J].Journal of Xi’an University of Science and Technology,2017,37(6):880-885.
[20] 尚婷.鄂尔多斯盆地子长地区上古生界盒8段储层特征[J].西安科技大学学报,2015,35(5):623-629.SHANG Ting.Characteristics of He 8 member reservoir of Upper Paleozoic in Zichang Area,Ordos Basin[J].Journal of Xi’an University of Science and Technology,2015,35(5):623-629.
[21] 许宏龙,刘建,乔诚,等.灰色关联分析法在双河油田储层评价中的应用[J].油气藏评价与开发,2015,5(5):17-21.XU Hong-long,LIU Jian,QIAO Cheng,et al.Application of gray correlative analysis method to reservoir evaluation of Shuanghe Oilfield[J].Reservoir Evaluation and Development,2015,5(5):17-21.
[22] 杨欣超,桑树勋,方良才,等.灰色关联分析在煤层气储层评价中的应用[J].西安科技大学学报,2010,30(2):202-206.YANG Xin-chao,SANG Shu-xun,FANG Liang-cai,et al.Application of gray relational analysis to evaluation of coalbed methane reservoir[J].Journal of Xi’an University of Science and Technology,2010,30(2):202-206.
[23] 宋土顺,刘立,于淼,等.灰色系统理论关联分析法在储层评价中的应用——以延吉盆地大砬子组2段为例[J].断块油气田,2012,16(6):714-717.SONG Tu-shun,LIU Li,YU Miao,et al.Application of grey system theory correlation method in reservoir evaluation:taking the 2nd member of Dalazi Formation in Yanji Basin as an example[J].Fault-Block Oil & Gas Field,2012,16(6):714-717.
[24] 程启贵,郭少斌,王海红,等.鄂尔多斯盆地中西部长6油层组储层综合评价[J].石油实验地质,2010,32(5):415-419.CHENG Qi-gui,GUO Shao-bin,WANG Hai-hong,et al.Comprehensive reservoir evaluation of Chang 6 oil-bearing layers in midwest Ordos Basin[J].Petroleum Geology & Experiment,2010,32(5):415-419.
[25] 方辉煌,汪吉林,宫云鹏,等.基于灰色模糊理论的页岩气储层评价——以重庆南川地区龙马溪组页岩为例[J].岩性油气藏,2016,28(5):76-81.FANG Hui-huang,WANG Ji-lin,GONG Yun-peng,et al.Evaluation of shale gas reservoirs based on gray fuzzy theory:a case study from Longmaxi Formation[J].Lithologic Reservoirs,2016,28(5):76-81.
[26] 赵加凡,陈小宏,张勤.灰色关联分析在储层评价中的应用[J].勘探地球物理进展,2003,26(4):282-286.ZHAO Jia-fan,CHEN Xiao-hong,ZHANG Qin.Application of grey correlation analysis method in reservoir evaluation[J].Progress in Exploration Geophysics,2003,26(4):282-286.
[2] 武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,6(3):307-315.WU Fu-li,LI Wen-hou,LI Yu-hong,et al.Delta sediments and evolution of the Yanchang Formation of Upper Triassic in Ordos Basin[J].Journal of Palaeogeography,2004,6(3):307-315.
[3] 李文厚,庞军刚,曹红霞,等.鄂尔多斯盆地晚三叠世延长期沉积体系及岩相古地理演化[J].西北大学学报(自然科学版),2009,39(3):501-506.LI Wen-hou,PANG Jun-gang,CAO Hong-xia,et al.Depositional system and paleogeographic evolution of the Late Triassic Yanchang stage in Ordos Basin[J].Journal of Northwest University(Natural Science Edition),2009,39(3):501-506.
[4] 李杰,王凤琴,冷丹凤,等.青平川油田延长组长2沉积微相与油气分布[J].西安石油大学学报(自然科学版),2010,25(2):34-38.LI Jie,WANG Feng-qin,LENG Dan-feng,et al.Characteristics of sedimentary microfacies and oil&gas distribuition of Chang 2 reservoir of Yanchang Formation in Qingpingchuan Oilfield[J].Journal of Xi’an Shiyou University:Natural Science Edition,2010,25(2):34-38.
[5] 于珺,陈治军,李科社,等.青平川油田关庄地区延长组油气富集规律[J].西安科技大学学报,2015,35(2):202-207.YU Jun,CHEN Zhi-jun,LI Ke-she,et al.Hydrocarbon enrichment law of Yanchang Formation in Guanzhuang area of Qingpingchuan Oilfield[J].Journal of Xi’an University of Science and Technology,2015,35(2):202-207.
[6] 杨华,傅强,付金华.鄂尔多斯晚三叠世盆地沉积层序与油气成藏[M].北京:地质出版社,2007.YANG Hua,FU Qiang,FU Jin-hua.Sedimentary sequence and hydrocarbon accumulation of Late Triassic,Ordos Basin[M].Beijing:Geological Publishing House,2007.
[7] 李玉宏,张文,武富礼,等.陕西省铜川-黄陵地区延长组长7油页岩特征及资源潜力[J].西安科技大学学报,2016,36(5):647-656.LI Yu-hong,ZHANG Wen,WU Fu-li,et al.Characteristics and resource potential of oil shale in Chang 7 of Yanchang Formation in Tongchuan-Huangling area,Shaanxi provinces[J].Journal of Xi’an University of Science and Technology,2016,36(5):647-656.
[9] Liang T,Chang Y,Guo X,et al.Influence factors of single well’s productivity in the Bakken tight oil reservoir,Williston Basin[J].Petroleum Exploration and Development,2013,40(3):383-388.
[10] 杨正明,张英芝,郝明强,等.低渗透油田储层综合评价方法[J].石油学报,2006,27(2):64-67.YANG Zheng-ming,ZHANG Ying-zhi,HAO Ming-qiang,et al.Comprehensive evaluation of reservoir in low-permeability oilfields[J].Acta Petrolei Sinica,2006,27(2):64-67.
[11] 刘吉余,彭志春,郭晓博.灰色关联分析法在储层评价中的应用——以大庆萨尔图油田北二区为例[J].油气地质与采收率,2005,12(2):13-15.LIU JI-yu,PENG Zhi-chun,GUO Xiao-bo.Application of gray relation analysis reservoir evaluation:taking Bei 2 area,Saertu Oilfield,Daqing as an example[J].Petroleum Geology and Recovery Efficiency,2005,12(2):13-15.
[12] 涂乙,谢传礼,刘超,等.灰色关联分析法在青东凹陷储层评价中的应用[J].天然气地球科学,2012,23(2):381-386.TU Yi,XIE Chuan-li,LIU Chao,et al.Application of grey correlation analysis method in reservoir evaluation of Qingdong sag[J].Nature Gas Geoscience,2012,23(2):381-386.
[13] 白江,刘晓芳.陕北吴起地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(3):403-409.BAI Jiang,LIU Xiao-fang.Heterogeneity of the reservoir in the Yanchang Formation,Wuqi area[J].Journal of Xi’an University of Science and Technology,2017,37(3):403-409.
[14] 杨少春,杨兆林,胡红波.熵权非均质综合指数算法及其应用[J].中国石油大学学报(自然科学版),2004,28(1):18-21.YANG Shao-chun,YANG Zhao-lin,HU Hong-bo.An algorithm of heterogeneous synthetic index with entropy weight[J].Journal of China University of Petroleum(Edition of Natural Science),2004,28(1):18-21.
[15] 晁会霞,姚卫华,杨兴科,等.储层综合评价方法在白豹油田中的应用[J].西安石油大学学报(自然科学版),2010,25(6):1-7.CHAO Hui-xia,YAO Wei-hua,YANG Xing-ke,et al.Application of a comprehensive evaluation of method of reservoir in Bainao Oilfeild[J].Journal of Xi’an Shiyou University(Natural Science Edition),2010,25(6):1-7.
[16] 吴辰泓,张丽霞,高潮.下寺湾地区延长组陆相页岩孔隙特征及影响因素[J].西安科技大学学报,2018,38(6):990-998.WU Chen-hong,ZHANG Li-xia,GAO Chao.Pore characteristics and influential factors on lacustrine shale in Yanchang Formation,Xiasiwan area[J].Journal of Xi’an University of Science and Technology,2018,38(6):990-998.
[17] 石骁騑,石广仁,张庆春.模糊数学和灰色理论综合评判效果对比[J].石油勘探与开发,2002,29(2):84-85.SHI Xiao-fei,SHI Guang-ren,ZHANG Qing-chun.Comparison of integrated decision results between fuzzy mathematics and grey theory[J].Petroleum Exploration and Development,2002,29(2):84-85.
[18] 张梦婷,李文厚,白金莉,等.镇泾地区延长组长9段储层成岩作用特征[J].西安科技大学学报,2016,36(6):837-842.ZHANG Meng-ting,LI Wen-hou,BAI Jin-li,et al.Diagenesis characteristics of Chang 9 reservoir of Yanchang Formation in Zhenjing area[J].Journal of Xi’an University of Science and Technology,2016,36(6):837-842.
[19] 马东升,符超峰,李克永,等.延长地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(6):880-885.MA Dong-sheng,FU Chao-feng,LI Ke-yong,et al.Reservoir heterogeneity characteristics of Yanchang Formation in Yanchang region[J].Journal of Xi’an University of Science and Technology,2017,37(6):880-885.
[20] 尚婷.鄂尔多斯盆地子长地区上古生界盒8段储层特征[J].西安科技大学学报,2015,35(5):623-629.SHANG Ting.Characteristics of He 8 member reservoir of Upper Paleozoic in Zichang Area,Ordos Basin[J].Journal of Xi’an University of Science and Technology,2015,35(5):623-629.
[21] 许宏龙,刘建,乔诚,等.灰色关联分析法在双河油田储层评价中的应用[J].油气藏评价与开发,2015,5(5):17-21.XU Hong-long,LIU Jian,QIAO Cheng,et al.Application of gray correlative analysis method to reservoir evaluation of Shuanghe Oilfield[J].Reservoir Evaluation and Development,2015,5(5):17-21.
[22] 杨欣超,桑树勋,方良才,等.灰色关联分析在煤层气储层评价中的应用[J].西安科技大学学报,2010,30(2):202-206.YANG Xin-chao,SANG Shu-xun,FANG Liang-cai,et al.Application of gray relational analysis to evaluation of coalbed methane reservoir[J].Journal of Xi’an University of Science and Technology,2010,30(2):202-206.
[23] 宋土顺,刘立,于淼,等.灰色系统理论关联分析法在储层评价中的应用——以延吉盆地大砬子组2段为例[J].断块油气田,2012,16(6):714-717.SONG Tu-shun,LIU Li,YU Miao,et al.Application of grey system theory correlation method in reservoir evaluation:taking the 2nd member of Dalazi Formation in Yanji Basin as an example[J].Fault-Block Oil & Gas Field,2012,16(6):714-717.
[24] 程启贵,郭少斌,王海红,等.鄂尔多斯盆地中西部长6油层组储层综合评价[J].石油实验地质,2010,32(5):415-419.CHENG Qi-gui,GUO Shao-bin,WANG Hai-hong,et al.Comprehensive reservoir evaluation of Chang 6 oil-bearing layers in midwest Ordos Basin[J].Petroleum Geology & Experiment,2010,32(5):415-419.
[25] 方辉煌,汪吉林,宫云鹏,等.基于灰色模糊理论的页岩气储层评价——以重庆南川地区龙马溪组页岩为例[J].岩性油气藏,2016,28(5):76-81.FANG Hui-huang,WANG Ji-lin,GONG Yun-peng,et al.Evaluation of shale gas reservoirs based on gray fuzzy theory:a case study from Longmaxi Formation[J].Lithologic Reservoirs,2016,28(5):76-81.
[26] 赵加凡,陈小宏,张勤.灰色关联分析在储层评价中的应用[J].勘探地球物理进展,2003,26(4):282-286.ZHAO Jia-fan,CHEN Xiao-hong,ZHANG Qin.Application of grey correlation analysis method in reservoir evaluation[J].Progress in Exploration Geophysics,2003,26(4):282-286.