地震属性在SU气田开发中的应用
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摘要
SU气田地下地质情况复杂,有效储集砂体分布非均质性强,常规方法对含气有利区的预测符合率低,不能满足开发的需要。利用保真处理的三维地震数据体,进行叠前及叠后地震资料的地震属性、波形分类、频谱分解处理和三维可视化、AVO远近道对比研究,并综合上述研究成果进行岩性与含气砂体的横向预测,较好地解决了有效储层分布及含气有利区块分布的非均质性问题,同时指出了研究过程中使用地震属性时应注意的问题。
SU gas field has complex geology,the reservoir in the field was featured with strong heterogeneity.Previously,part of research could not meet requirement for product.In this paper,some seismic attributes that include seismic waveform classification,spectral decomposition,3D visual,and AVO characteristics were extracted from pre-stack and post-stack seismic data that include far,near offset and full offset stacked seismic data.By integrating above information,the question of heterogeneity was solved to a certain extent and the reservoir and gas-bearing were predicated.At last,the pitfalls which occur in the application of seismic attribute are summarized.
SU gas field has complex geology,the reservoir in the field was featured with strong heterogeneity.Previously,part of research could not meet requirement for product.In this paper,some seismic attributes that include seismic waveform classification,spectral decomposition,3D visual,and AVO characteristics were extracted from pre-stack and post-stack seismic data that include far,near offset and full offset stacked seismic data.By integrating above information,the question of heterogeneity was solved to a certain extent and the reservoir and gas-bearing were predicated.At last,the pitfalls which occur in the application of seismic attribute are summarized.
引文
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[6]杨占龙,郭精义,陈启林,等.地震信息多参数综合分析与岩性油气藏勘探——以JH盆地XN地区为例[J].天然气地球科学,2004,15(6):628-632.
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[2]欧阳永林,杨池银.用常规及近、远道叠加剖面识别气层——以鄂尔多斯盆地苏里格庙气田盒8储层为例[J].天然气地球科学,2003,14(4):287-290.
[3]石万忠,陈开远,陈新军,等.地震属性参数在胜坨油田气藏预测中的应用[J].石油与天然气地质,2003,24(2):196-198.
[4]BROW N A R.Se ism ic attribu tes and the ir classification[J].The L ad ing Edge,1996,15(10):1090.
[5]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.
[6]杨占龙,郭精义,陈启林,等.地震信息多参数综合分析与岩性油气藏勘探——以JH盆地XN地区为例[J].天然气地球科学,2004,15(6):628-632.
[7]GREG PARTYKA,JAM ES GR IDLEY.In terpretationa l ap-p lications of spectra l decom position in reservo ir characterizat-ion[J].The L ad ing Edge,1999,18(3):353-361.
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