基于地震正演和属性分析技术预测河道砂体
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摘要
松辽盆地南部R字井斜坡带泉四段属河流相沉积,储层为超低渗透储层,埋藏深,物性差,砂体薄,横向上变化快,优质储层位于河道主体部位。但由于受泉四段T_2强反射界面的影响,掩盖了下伏泉四段Ⅰ砂组储层的部分有效信息,从而加大了储层预测难度。通过建立不同围岩组合、不同砂体厚度的地震正演模型,明确了泉四段河道砂体与地震反射振幅、频率等属性的相关性。以地震沉积学的理论为依据,井震结合,重新解释砂体包络面,优选与河道砂体厚度变化相关性好的敏感属性,预测河道砂体储层展布规律。该方法对于薄层、非均质储层的预测具有较高的实用价值。
The Fourth Quan Member in R zone well slope belt of south Songliao Basin is ultra-low permeability reservoir, which is buried deep and is of poor physical property,thin sand body and quick horizontal changes.Its superior Reservoir of good quality is located in the principal part of the river.The effective signals of sand reservoirs I is shielded due to the influence of strong impedance interface of T_2 at the Fourth Quan Member,so it is more difficult to predict the reservoir.Through seismic forward modeling of different surrounding rock combinations and different thickness of sand body,we discovered the correlation between the Fourth Quan Member channel sand bodies and attributes of seismic reflection amplitude,frequency and so on.Based on the theory of seismic sedimentology,and by combining well and seismic,we reinterpreted the sand body enveloping surface.The distribution rule of channel sand body reservoirs is predicted by the sensitive attributes,which has been optimized by the best correlation with thickness variation of channel sand body.The method has higher practical value for thin and anisotropic reservoir prediction.
The Fourth Quan Member in R zone well slope belt of south Songliao Basin is ultra-low permeability reservoir, which is buried deep and is of poor physical property,thin sand body and quick horizontal changes.Its superior Reservoir of good quality is located in the principal part of the river.The effective signals of sand reservoirs I is shielded due to the influence of strong impedance interface of T_2 at the Fourth Quan Member,so it is more difficult to predict the reservoir.Through seismic forward modeling of different surrounding rock combinations and different thickness of sand body,we discovered the correlation between the Fourth Quan Member channel sand bodies and attributes of seismic reflection amplitude,frequency and so on.Based on the theory of seismic sedimentology,and by combining well and seismic,we reinterpreted the sand body enveloping surface.The distribution rule of channel sand body reservoirs is predicted by the sensitive attributes,which has been optimized by the best correlation with thickness variation of channel sand body.The method has higher practical value for thin and anisotropic reservoir prediction.
引文
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[15]王永春.松辽盆地南部岩性油藏的形成条件与分布[M].北京:石油工业出版社,2001.
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[18]董春梅,张宪国,林承焰.有关地震沉积学若干问题的探讨[J].石油地球物理勘探,2006,41(4):405-409.
[19]刘化清,卫平生,李相博,等.对地震沉积学理论创新的认识[J].岩性油气藏,2012,24(1):7-12. Liu Huaqing,Wei Pingsheng,Li Xiangbo,et al.Discussion on theoretical innovation of seismic sedimentology [J].Lithologic Reservoirs,2012,24(1):7-12.
[2]刘云武,唐振国,张永清.松辽盆地两江地区扶余油层河道储层描述方法与应用[J].中国石油勘探,2011, 16(2):44-48. Liu Yunwu,Tang Zhenguo,Zhang Yongqing.Reservoir description of river channel of Fuyu reservoir in Two-river ??Area of Songliao Basin[J].China Petroleum Exploration, 2011,16(2):44-48.
[3]李瑞磊,冯晓辉,李增玉,等.松辽盆地南部营城组火山岩裂缝的叠前地震识别[J].成都理工大学学报:自然科学版,2012,39(6):611-616. Li Ruilei,Feng Xiaohui,Li Zengyu,et al.Recognition of pre-stack earthquake of volcanic fracture of Yingcheng Formation in Songliao Basin,China[J].Journal of Chengdu University of Technology:Science & Technology Edition, 2012,39(6):611-616.
[4]刘伟,贺振华,陈学华.地震多属性在浊积扇河道砂体识别中的应用[J].西安石油大学学报:自然学科版, 2011,26(5):6-10. Liu Wei,He Zhenhua,Chen Xuehua.Application of seismic multi-attributes in the identification of the channel sand in turbidite body[J].Journal of Xi'an Shiyou University: Natural Science Edition,2011,26(5):610.
[5]郎晓玲,彭仕宓,康洪全,等.利用多属性体分类技术预测扇王角洲砂体[J].西南石油大学学报:自然学科版,2010,32(1):57-62. Lang Xiaoling,Peng Shimi,Kang Hongquan,et al.Predict fan delta sand body by using multi attributes volume classification technology[J].Journal of Southwest Petroleum University:Science & Technology Edition, 2010,32(1):57-62.
[6]王大兴,张盟勃.全数字地震叠前储层预测技术及应用效果[J].中国石油勘探,2013,18(1):44-48. Wang Daxing,Zhang Mengbo.Full digital seismic prestack reservoir prediction technology and its application results[J].China Petroleum Exploration,2013, 18(1):44-48.
[7]金振奎,时晓章,何苗.单河道砂体的识别方法[J].新疆石油地质,2010,31(6):572-575. Jin Zhenkui,Shi Xiaozhang,He Miao.Identification methods for single-channel sand body[J].Xinjiang Petroleum Geology,2010,31(6):572-575.
[8]凌云研究组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2003,38(6):642-653.
[9]张建宁,韩文功,阎昭岷.单一河道砂体边界地质模型及其地震正演响应特征[J].油气地球物理,2006, 4(4):32-35.
[10]王元君,腾玉波,魏立新.储层模型正演模拟及AVO特征研究[J].西南石油大学学报:自然学科版,2 012, 34(2):65-71. Wang Yuanjun,Teng Yubo,Wei Lixin.Research of modeling of the reservoir and AVO characteristics[J].Journal of Southwest Petroleum University:Science & Technology Edition,2012,34(2):65-71.
[11]张秀萍.利用地震正演和属性分析技术预测生物灰岩储层分布[J].石油天然气学报,2008,30(2):88-91. Zhang Xiuping.Predicting biolimestone reservoir distribution by using seismic forward and attribute analysis[J]. Journal of Oil and Gas Technology,2008.30(2):88-91.
[12]肖开宇,胡祥云.正演模拟技术在地震解释中的应用[J].工程地球物理学报,2009,6(4):459-464. Xiao Kaiyu,Hu Xiangyun.Forward seismic modeling technology in the application of interpretation[J].Chinese Journal of Engineering Geophsics,2009,6(4):459-464.
[13]黄芸,梅玲,关键,等.模型正演技术在准噶尔盆地东部地震解释中的应用[J].新疆石油地质,2012,33(5): 554-556. Huang Yun,Mei Ling.Guan Jian,et al.Application forward modeling technigue to seismic interpretation in eastern Junggar Basin[J].Xinjiang Petroleum Geology.2012, 33(5):554-556.
[14]王永春,康伟力,毛超林.吉林探区油气勘探理论与实践[M].北京:石油工业出版社,2007.
[15]王永春.松辽盆地南部岩性油藏的形成条件与分布[M].北京:石油工业出版社,2001.
[16]曾洪流,朱筱敏,朱如凯,等.陆相坳陷型盆地地震沉积学研究规范[J].石油勘探与开发,2012,39(3): 275-284. Zeng Hongliu,Zhu Xiaomin.Zhu Rukai,et al.Guidelines for seismic sedimentologic study in non-marine postrift basins[J].Petroleum Exploration and Develop- ??ment,2012,39(3):275-284.
[17]王一博,朱筱敏,王继平,等.地震沉积学在油田勘探开发中的应用——以滨里海盆地东部地区为例[J].西安石油大学学报:自然学科版,2012,27(1):1-6. Wang Yibo,Zhu Xiaomin,Wang Jiping,et al.Application of seismic sedimentology in oilfield exploration and development:Taking the eastern area of Pre-caspian Basin as an example[J].Journal of Xi'an Shiyou University: Natural Science Edition,2012,27(1):1-6.
[18]董春梅,张宪国,林承焰.有关地震沉积学若干问题的探讨[J].石油地球物理勘探,2006,41(4):405-409.
[19]刘化清,卫平生,李相博,等.对地震沉积学理论创新的认识[J].岩性油气藏,2012,24(1):7-12. Liu Huaqing,Wei Pingsheng,Li Xiangbo,et al.Discussion on theoretical innovation of seismic sedimentology [J].Lithologic Reservoirs,2012,24(1):7-12.
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