大情字井油田青一段特低渗透储层物性主控因素
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摘要
为研究地质作用对特低渗透储层物性的影响,查明影响储层物性的主控因素,提高油气勘探的成功率,依托岩心观察、岩心物性分析化验和薄片鉴定等资料,选取岩性、沉积、溶蚀、胶结、构造及埋深6个影响因素,采用地质统计学和参数交会图相关分析等方法,对松辽盆地大情字井油田青一段特低渗透储层物性影响因素进行了系统研究。结果表明:青一段储层物性存在一定的差异,具有低孔-特低孔、特低渗-超低渗的特点;岩性、沉积相是影响储层物性的最重要主控因素,细砂岩较其他岩性的物性好,邻近沉积物源的井区物性较好,远离沉积物源的井区物性相对较差;溶蚀作用和胶结作用从建设性和破坏性两方面均对储层物性有较大的影响,碳酸盐、泥质胶结是导致储层孔隙度、渗透性变差的一个重要影响因素;构造作用仅在断层附近能够改善储层的渗透性能,而远离断层的井区物性几乎不受构造作用的影响;随埋深增加,储层孔隙度和渗透率降低趋势均不明显,揭示出埋深对储层物性影响较小的特征。
In order to study the effects of geological processes on the physical properties of ultra-low permeability reservoirs,find out the main factors influencing the reservoir physical property and improve the success rate of oil and gas exploration,based on core observation,statistics of core physical properties data and thin section identification,six factors which are lithology,deposition,dissolution,cementation,structure and depth were selected,using geological statistics and correlation analysis of parameter crossplot methods,the factors influencing the physical properties of reservoir in the Qing 1 section of Daqingzijing Oilfield were systematically studied. The results indicate that the physical property of reservoir in the study area have some differences,and show the characteristics of the low pore-extra low porosity,low permeability-extra low permeability. Lithology and sedimentary facies are the most important main control factors of reservoir property,fine sandstone is better than other lithology,the physical property of reservoir in sediment source area is better,but the physical property of reservoir in sedimentary frontal area is relatively poor. Dissolution and cementation have a large effect on reservoir physical property. Only near the fault,tectonic setting can improve the permeability of the reservoir,and awayfrom the fault of well block,the reservoir property is almost not affected by tectonic action. With the increase of buried depth,the decrease trend of reservoir porosity and permeability are not obvious,and it shows that the buried depth is of less affect on the physical property of reservoir.
In order to study the effects of geological processes on the physical properties of ultra-low permeability reservoirs,find out the main factors influencing the reservoir physical property and improve the success rate of oil and gas exploration,based on core observation,statistics of core physical properties data and thin section identification,six factors which are lithology,deposition,dissolution,cementation,structure and depth were selected,using geological statistics and correlation analysis of parameter crossplot methods,the factors influencing the physical properties of reservoir in the Qing 1 section of Daqingzijing Oilfield were systematically studied. The results indicate that the physical property of reservoir in the study area have some differences,and show the characteristics of the low pore-extra low porosity,low permeability-extra low permeability. Lithology and sedimentary facies are the most important main control factors of reservoir property,fine sandstone is better than other lithology,the physical property of reservoir in sediment source area is better,but the physical property of reservoir in sedimentary frontal area is relatively poor. Dissolution and cementation have a large effect on reservoir physical property. Only near the fault,tectonic setting can improve the permeability of the reservoir,and awayfrom the fault of well block,the reservoir property is almost not affected by tectonic action. With the increase of buried depth,the decrease trend of reservoir porosity and permeability are not obvious,and it shows that the buried depth is of less affect on the physical property of reservoir.
引文
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[15]岳绍飞,黄传炎,严德天.洛伊地区三叠系上统致密砂岩储层孔隙特征及物性影响因素[J].中南大学学报:自然科学版,2015,46(1):208-216.YUE Shao-fei,HUANG Chuan-yan,YAN De-tian.Characteristics of pore evolution and its influencing factors of petrophysical properties of tight sandstone reservoir in Upper Triassic,Luoyi District[J].Journal of Central South University:Natural Science Edition,2015,46(1):208-216.
[16]邱隆伟.民丰洼陷沙三段孔隙发育特征及储层物性主控因素[J].中国石油大学学报,2009,33(4):10-15.QIU Long-wei.Characteristics of pore development and controlling factors of reservoir property of Es3 in Minfeng sag[J].Journal of China University of Petroleum,2009,33(4):10-15.
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[18]尤丽,李伟.琼东南盆地宝岛区深埋藏储层物性主控因素[J].特种油气藏,2014,21(3):37-40.YOU Li,LI Wei.Main factors affecting physical properties of deep burial reservoir in Baodao Area of Southeast Hainan Basin[J].Special Oil and Gas Reservoirs,2014,21(3):37-40.
[19]沈卫兵,庞雄奇,张宝收.塔中地区碳酸盐岩与碎屑岩储层物性差异及主控因素[J].高校地质学报,2015,21(1):138-146.SHEN Wei-bing,PANG Xiong-qi,ZHANG Bao-shou.Physical properties differences and key controlling factors of the Clasolite reservoirs and carbonate reservoirs in Tazhong area[J].Geological Journal of China Universities,2015,21(1):138-146.
[2]Arfan Ali,Salem Abdalah,David K Potter.Quantifying the role of grain lining hematite cement in controlling permeability in a relatively tight gas sandstone reservoir[J].SPE Reservoir Evaluation and Engineering,2012,15(6):618-623.
[3]魏巍,朱筱敏,谈明轩,等.查干凹陷下白垩统扇三角洲相储层特征及物性影响因素[J].石油与天然气地质,2015,36(3):447-455.WEI Wei,ZHU Xiao-min,TAN Ming-xuan,et al.Reservoir characteristics and influences on poroperm characteristics of the Lower Cretaceous fan-delta facies in Chagan Depression[J].Oil and Gas Geology,2015,36(3):447-455.
[4]赵振宇.车西洼陷沙四上亚段特低渗储层物性主控因素分析[J].断块油气田,2011,18(4):424-428.ZHAO Zhen-yu.Analysis on controlling factors for ultralow permeability reservoirs of Upper Es_4 Member in Chexi Depression[J].Fault-Block Oil and Gas Field,2011,18(4):424-428.
[5]周康,彭军,耿梅.川中-川南过渡带致密砂岩储层物性主控因素分析[J].断块油气田,2008,15(2):8-11.ZHOU Kang,PENG Jun,GENG Mei.Analysis on main controlling factors of physical property of tight sandstone reservoir[J].Fault-Block Oil and Gas Field,2008,15(2):8-11.
[6]YU Hong-yan,LI Hong-qi.Ultra low permeability reservoir characteristics and origin analysis[J].Natural Resources and Sustainable Development,2012,36(10):51-54.
[7]陈修,曲希玉.大牛地气田大18井上古生界致密砂岩储层物性及其成岩主控因素[J].沉积学报,2016,34(2):364-374.CHEN Xiu,QU Xi-yu.Physical property of the upper Paleozoic tight sandstone reservoir and its main controlling factors during diagenesis of well D 18 in Daniudi gas field[J].Acta Sedimentologica Sinica,2016,34(2):364-374.
[8]GAO Hui,SUN Wei,FEI Er-zhan,et al.The relationship between micro-pore throat characteristics and physical property difference in an extra-ultra low permeability sandstone reservoir[J].Rock and Mineral Analysis,2011,30(2):244-250.
[9]任大忠,孙卫,雷启鸿,等.鄂尔多斯盆地华庆油田长18段储层物性影响因素[J].地质与勘探,2014,50(3):591-598.REN Da-zhong,SUN Wei,LEI Qi-hong,et al.Reservoir properties of Chang18Member of Huaqing Oilfield in Ordos Basin[J].Geology and Prospecting,2014,50(3):591-598.
[10]TAN Feng-qi,ZHAO Rui,ZHAO Yang-yang,et al.Acase study:evaluating low-porosity and ultra-low-permeability Triassic reservoir rocks in the Ordos Basin by the integration of logs and core[J].Petroleum Geoscience,2017,23(4):454-465.
[11]李松泽,胡望水.鄂尔多斯盆地麻黄山西区块长6油组致密储层特征及物性主控因素研究[J].科学技术与工程,2015,15(2):187-192.LI Song-ze,HU Wang-shui.Research of the tight reservoir characteristics and main physical property influencing factors of Chang 6 Formation reservoir in West Area of Mahuangshan,Ordos Basin[J].Science Technology and Engineering,2015,15(2):187-192.
[12]于波,罗小明,乔向阳,等.鄂尔多斯盆地延长油气区山西组山2段储层物性影响因素[J].中南大学学报:自然科学版,2012,43(10):3931-3937.YU Bo,LUO Xiao-ming,QIAO Xiang-yang,et al.Influential factor and characteristics of Shan-2 member of Shanxi Formation in Yanchang Oil-gas field[J].Journal of Central South University:Natural Science Edition,2012,43(10):3931-3937.
[13]党犇,赵虹,向连格,等.靖边油田长6油层组储层特征及物性影响因素[J].西北地质,2010,43(3):127-131.DANG Ben,ZHAO Hong,XIANG Lian-ge,et al.Reservoirs characteristics and influence factors of Chang 6Oil-bearing group in Jingbian Oilfield[J].Northwestern Geology,2010,43(3):127-131.
[14]孙红华,李旭平,钟建华.辽河西部凹陷南段沙三段致密砂岩储层物性特征及主控因素分析[J].岩性油气藏,2013,25(6):53-61.SUN Hong-hua,LI Xu-ping,ZHONG Jian-hua.Characteristics and controlling factors of tight sandstone reservoir of the third member of Shahejie Formation in the southern West Depression,Liaohe Basin[J].Northwest Oil and Gas Exploration,2013,25(6):53-61.
[15]岳绍飞,黄传炎,严德天.洛伊地区三叠系上统致密砂岩储层孔隙特征及物性影响因素[J].中南大学学报:自然科学版,2015,46(1):208-216.YUE Shao-fei,HUANG Chuan-yan,YAN De-tian.Characteristics of pore evolution and its influencing factors of petrophysical properties of tight sandstone reservoir in Upper Triassic,Luoyi District[J].Journal of Central South University:Natural Science Edition,2015,46(1):208-216.
[16]邱隆伟.民丰洼陷沙三段孔隙发育特征及储层物性主控因素[J].中国石油大学学报,2009,33(4):10-15.QIU Long-wei.Characteristics of pore development and controlling factors of reservoir property of Es3 in Minfeng sag[J].Journal of China University of Petroleum,2009,33(4):10-15.
[17]Christopher Baiyegunhi,LIU Kuiwu,Gwavava Oswald.Diagenesis and reservoir properties of the Permian Ecca group sandstones and mudrocks in the eastern Cape province,south Africa[J].Minerals,2017,88(7):1-26.
[18]尤丽,李伟.琼东南盆地宝岛区深埋藏储层物性主控因素[J].特种油气藏,2014,21(3):37-40.YOU Li,LI Wei.Main factors affecting physical properties of deep burial reservoir in Baodao Area of Southeast Hainan Basin[J].Special Oil and Gas Reservoirs,2014,21(3):37-40.
[19]沈卫兵,庞雄奇,张宝收.塔中地区碳酸盐岩与碎屑岩储层物性差异及主控因素[J].高校地质学报,2015,21(1):138-146.SHEN Wei-bing,PANG Xiong-qi,ZHANG Bao-shou.Physical properties differences and key controlling factors of the Clasolite reservoirs and carbonate reservoirs in Tazhong area[J].Geological Journal of China Universities,2015,21(1):138-146.
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