Abstract：Fuyu oil bearing beds,as tight hydrocarbon reservoirs with low-porosity and ultra-low-permeability,are widely developed in the peripheral of Daqing,Songliao Basin.Channel sandbodies there are characterized by a narrow,thin,and poor distribution.It is very difficult to depict this kind of sandbodies only on the current sparse well patterns.Therefore,seismic principal components (PCA) and Fisher discriminant analysis are used for Fuyu reservoirs' research in the Block Fang 38.The following observations are obtained:①The PCA analysis is used for the dimension-reduction optimization of seismic attributes.The three-principal-component information at borehole accounts for 95.5% of the total variance of the original data.So the dimension of seismic attributes is reduced and the redundant information in multiple attributes is eliminated; ②The Fisher discriminant theory of multiple statistics is applied to the analysis of narrow channel sandbodies.Based on sandstone thickness at boreholes and the three-principal components at boreholes,Fisher sand and shale discriminant model is established,which not only integrates well-point sandstone thickness but also takes into account the spatial distance influence of seismic data.So the channel sandbody prediction is improved;③With sandstone thickness of 1.5,2,and 3 m,the accuracy rates of Fisher sand and shale discriminant model are 87.5%,88.9%,and 90%.And the ability to discriminate channel sandbody is even stronger.
Zeng H,Loucks R G,Frank L.Mapping sediment-dispersal patterns and associated systems tracts in fourth and fifth order sequences using seismic sedimentology:Example from Corpus Christi Bay,Texas.AAPG Bulletin,2007,91(7):981-1003.
[2]
Zeng H.Seismic imaging for seismic geomorphology beyond the seabed:Potentials and challenges//Davis R J et al.Seismic Geomorphology Applications to Hydrocarbon Exploration and Production,London Geological Society,London,Special Publication 277,2007,15-28.
[3]
Hentz T F,Zeng H.High frequency sequence stratigraphy from seismic sedimentology:Applied to Miocene,Vermilion Block 50,Tiger Shoal area,offshore Louisiana.AAPG Bulletin,2004,88(2):153-174.
[4]
杨占龙,刘化清,沙雪梅等.融合地震结构信息与属性信息表征陆相湖盆沉积体系.石油地球物理勘探,2017,52(1):138-145.Yang Zhanlong,Liu Huaqing,Sha Xuemei et al.Terrestrial lacustrine basin depositional system characteri-zation with seismic structure and attribute information fusion.OGP,2017,52(1):138-145.
[5]
金凤鸣,刘力辉,胡诚等.地震岩性地貌体在薄储层沉积微相研究中的应用.石油地球物理勘探,2017,52(1):173-180.Jin Fengming,Liu Lihui,Hu Cheng et al.Application of seismic lithologic geomorphy in thin-bed reservoir sedimentary microfacies study.OGP,2017,52(1):173-180.
[6]
曾洪流.地震沉积学在中国:回顾和展望.沉积学报,2011,29(3):61-70.Zeng Hongliu.Seismic sedimentology in China:A review.Acta Sedimentologica Sinica,2011,29(3):61-70.
[7]
彭达,尹成,朱永才等.扇三角洲前缘薄互层叠置砂体的敏感属性分析.石油地球物理勘探,2015,50(4):714-722.Peng Da,Yin Cheng,Zhu Yongcai et al.Sensitive seismic attribute analysis on thin interbed overlapped sandbodies in fan-delta front.OGP,2015,50(4):714-722.
[8]
夏竹,李中超,贾瑞忠等.井震联合薄储层沉积微相表征实例研究.石油地球物理勘探,2016,51(5):1002-1011.Xia Zhu,Li Zhongchao,Jia Ruizhong et al.Thin reservoir sedimentary microfacies characterization based on well logging and seismic data:a case study.OGP,2016,51(5):1002-1011.
[9]
朱筱敏,刘长利,张义娜等.地震沉积学在陆相湖盆三角洲砂体预测中的应用.沉积学报,2009,27(5):915-921.Zhu Xiaomin,Liu Changli,Zhang Yi'na et al.Application of seismic sedimentology in prediction of non-marine lacustrine deltaic sand bodies.Acta Sedimentologica Sinica,2009,27(5):915-921.
[10]
陆永潮,杜学斌,陈平等.油气精细勘探的主要方法体系——地震沉积学研究.石油实验地质,2008,30(1):1-5.Lu Yongchao,Du Xuebin,Chen Ping et al.Main methods system of fine petroleum exploration:seismic sendimentology.Petroleum Geology & Experiment,2008,30(1):1-5.
[11]
林正良,王华,李红敬等.地震沉积学研究现状及进展综述.地质科技情报,2009,28(5):131-136.Lin Zhengliang,Wang Hua,Li Hongjing et al.Overview of status and progress of seismic sedimentologic research.Geological Science and Technology Information,2009,28(5):131-136.
[12]
魏嘉,朱文斌,朱海龙等.地震沉积学——地震解释的新思路及沉积研究的新工具.勘探地球物理进展,2008,31(2):95-101.Wei Jia,Zhu Wenbin,Zhu Hailong et al.New methodologies for seismic interpretation and new tools for sedimentological study.Progress in Exploration Geophysics,2008,31(2):95-101.
[13]
Zeng Hongliu,Posamentier H W,Miall A D等著;朱筱敏,曾洪流,董艳蕾等译.地震沉积学.北京:石油工业出版社,2011.
[14]
牛彦良,敖志富,姜岩.地震特征参数的统计分析方法及应用.大庆石油地质与开发,1993,12(3):1-4.Niu Yanliang,Ao Zhifu,Jiang Yan.Statistical analysis method and application of seismic characteristic pa-rameter.Petroleum Geology & Oilfield Development in Daqing,1993,12(3):1-4.
[15]
许建华,张学工,李衍达.应用核Fisher判别技术预测油气储集层.石油地球物理勘探,2002,37(2):170-174.Xu Jianhua,Zhang Xuegong,Li Yanda.Application of kernel Fisher discriminating technique to prediction of hydrocarbon reservoir.OGP,2002,37(2):170-174.
[16]
张姮妤,高庆冕,齐秀丽等.薄差水淹层Fisher判别分析方法.大庆石油地质与开发,2016,35(4):147-151.Zhang Hengyu,Gao Qingmian,Qi Xiuli et al.Fisher discriminating and analyzing method for thin-and-poor watered-out oil reservoir.Petroleum Geology & Oilfield Development in Daqing,2016,35(4):147-151.
[17]
郝兰英,郭亚杰,李杰等.地震沉积学在大庆长垣密井网条件下储层精细描述中的初步应用.地学前缘,2012,19(2):81-86.Hao Lanying,Guo Yajie,Li Jie et al.Preliminary application of the seismic sedimentology to reservoir refined description under the condition of high density well-pattern in Daqing placanticline.Earth Science Frontiers,2012,19(2):81-86.
[18]
赵翰卿.大型河流-三角洲沉积储层精细描述方法.石油学报,2000,21(4):109-113.Zhao Hanqing.Methods for detailed description of large fluvial-delta depositional reservoir.Acta Petrolei Sinica,2000,21(4):109-113.
[19]
赵翰卿,付志国,吕晓光.储层层次分析和模式预测描述法.大庆石油地质与开发,2004,23(5):74-77.Zhao Hanqing,Fu Zhiguo,Lü Xiaoguang.Reservoir type analysis and model prediction description method.Petroleum Geology & Oilfield Development in Daqing,2004,23(5):74-77.
