时频分析技术识别泌阳凹陷毕店地区河道砂体
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摘要
针对泌阳凹陷毕店地区三角洲前缘水下分流河道与扇三角洲等多物源砂体厚度不稳定、整体偏薄的问题,采用正演、时频分析及地层切片技术开展河道砂体识别研究。通过层位精细标定,确定B398井油层在地震剖面上的反射特征;采用时频分析方法,确定有利于描述目标储层的分频数据体;通过构造精细解释,确定储层构造背景;在等时地层格架约束下,以分频体为基础,通过构造精细解释及地层切片技术,准确刻画构造特征及砂体边界,有效识别了三角洲前缘水下分流河道平面展布。在该区相继部署的B398、B404、D5、D8等井均获得日产20 t/d以上的高产工业油流,取得较好勘探效果。
Multi- source sandbodys of delta front underwater distributary channel,fan- delta,etc. with unstable and generally small thickness are developed in Bidian of Biyang Sag. Forward model,time- frequency analysis and strata slice are used to identify channel sandbodys. The reflectance signature of reservoirs in Well B398 in seismic section is determined through fine horizon calibration. The favorable fractional- frequency data- body of describing interest- reservoirs is determined by time- frequency analysis. Reservoir structural settling is identified by fine structural interpretation. Based on the constraint of isochronous stratigraphy framework and fractional- frequency data- body,the structure characteristics and sand- body boundaries are exactly described and delta front underwater distributary channel plane distribution is effectively identified by fine structural interpretation and strata slice.Favorable exploration and high industrial daily oil production rate of more than 20 t/d are achieved in the successively deployed wells of Well B398,Well B404,Well D5,Well D8,etc.
Multi- source sandbodys of delta front underwater distributary channel,fan- delta,etc. with unstable and generally small thickness are developed in Bidian of Biyang Sag. Forward model,time- frequency analysis and strata slice are used to identify channel sandbodys. The reflectance signature of reservoirs in Well B398 in seismic section is determined through fine horizon calibration. The favorable fractional- frequency data- body of describing interest- reservoirs is determined by time- frequency analysis. Reservoir structural settling is identified by fine structural interpretation. Based on the constraint of isochronous stratigraphy framework and fractional- frequency data- body,the structure characteristics and sand- body boundaries are exactly described and delta front underwater distributary channel plane distribution is effectively identified by fine structural interpretation and strata slice.Favorable exploration and high industrial daily oil production rate of more than 20 t/d are achieved in the successively deployed wells of Well B398,Well B404,Well D5,Well D8,etc.
引文
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[12]张永华,杨晟.微幅度构造解释及变速成图方法[J].石油物探,2010,49(2):176-181.
[13]Miriam K,Peter M,Peter L,et al.Time-Frequency analysis of explosions in the ammunition factory in novaky,slovakia[J].Bulletin ofthe Seismological Society of America,2008,98(5):2507-2516.
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[15]熊冉,赵继龙,厚刚福.用频谱分解和地震峰值属性分析预测薄砂岩储集层[J].新疆石油地质,2013,34(2):225-227.
[16]张永华,杨道庆,孙耀华.高精度层序地层学在隐蔽油藏预测中的应用[J].石油物探,2007,46(4):378-383.
[2]杨道庆,林社卿.泌阳凹陷北部斜坡石油成藏组合特征[J].石油天然气学报,2005,27(1):14-16.
[3]张永华,田小敏,罗家群.泌阳凹陷隐蔽油气藏分布特征与勘探方法[J].油气地质与采收率,2001,8(3):28-30.
[4]徐丽英,徐鸣洁,陈振岩.利用谱分解技术进行薄储层预测[J].石油地球物理勘探.2006,41(3):299-302.
[5]黄绪德.薄层陷频法[J].勘探地球物理进展,2001,25(5):1-6.
[6]Greg Partyka,James Gridley,John Lopez.Interpretational application of spectral decomposition inreservoir characterization[J].The Leading Edge,1999,18(3):353-360.
[7]Marfurt K J,Kirlin R L.Narrow-band spectral analysis and thin—bedtuning[J].Geophysics,2001,66(4):l274-1283.
[8]张永华,陈萍.基于合成记录的综合层位标定技术[J].石油地球物理勘探,2004,38(1):92-96.
[9]张永华,程学峰,杨忠意.一个水下扇的综合研究实例[J].河南石油,2000,14(3):7-9.
[10]张永华,杨道庆.井约束反演技术在白云岩缝洞型储集层预测中的应用[J].新疆石油地质,2006,27(2):219-222.
[11]张永华.三维地震资料综合解释方法探讨[J].石油物探,2004,43(1):49-53.
[12]张永华,杨晟.微幅度构造解释及变速成图方法[J].石油物探,2010,49(2):176-181.
[13]Miriam K,Peter M,Peter L,et al.Time-Frequency analysis of explosions in the ammunition factory in novaky,slovakia[J].Bulletin ofthe Seismological Society of America,2008,98(5):2507-2516.
[14]Sinha S,Routh P S,Anno P D,et al.Spectral decompositionof seismic data with continuous-wavelet transforms[J].Geophysics,2005,70(6):19-25.
[15]熊冉,赵继龙,厚刚福.用频谱分解和地震峰值属性分析预测薄砂岩储集层[J].新疆石油地质,2013,34(2):225-227.
[16]张永华,杨道庆,孙耀华.高精度层序地层学在隐蔽油藏预测中的应用[J].石油物探,2007,46(4):378-383.
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