苏里格气田多波地震处理与储层预测技术研究及应用
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摘要
鄂尔多斯盆地苏里格气田主要产层盒8段为典型低孔、低渗薄储层,利用常规地震方法预测有效储层存在很大难度。多波勘探技术因增加了横波信息,有效地提高了岩性和流体预测精度。针对多波应用的关键问题研究了多波技术在苏里格气田的应用。着重讨论了转换波综合静校正技术、转换波成像技术、纵横波的精细标定、纵横波联合解释、联合反演等多波应用的关键技术;较好地解决了转换波成像难题,在此基础上形成的以多波AVO、多波联合叠前反演为核心的流体检测技术大幅度提高了钻探井位的成功率,形成了一套针对苏里格西区多波地震流体检测的预测方法,应用实例表明多波技术在研究区是有效、可行的。
The eighth member of Shihezi Formation is a major reservoir of Sulige gas field in Ordos Basin. It is a thin reservoir of low porosity and permeability, so it is hard to be predicted based on regular seismic prediction. Multi-wave exploration technique could be used to improve accuracy of rock character and fluid property by adding with S-wave data. This paper focuses on multi-wave application in Sulige gas field, mainly discusses converted wave static correction, converted wave imaging, fine PS wave calibration, P and S joint interpretation, joint inversion, and thus better solves difficulties in converted imaging. Meanwhile, the success ratio of drilling is improved greatly by using the fluid detection methods based on multi-wave AVO and multi-wave joint inversion. This paper presents a set of reservoir prediction methods of multi-wave fluid detection focusing on western area of Sulige, which are proved to be feasible in the area.
The eighth member of Shihezi Formation is a major reservoir of Sulige gas field in Ordos Basin. It is a thin reservoir of low porosity and permeability, so it is hard to be predicted based on regular seismic prediction. Multi-wave exploration technique could be used to improve accuracy of rock character and fluid property by adding with S-wave data. This paper focuses on multi-wave application in Sulige gas field, mainly discusses converted wave static correction, converted wave imaging, fine PS wave calibration, P and S joint interpretation, joint inversion, and thus better solves difficulties in converted imaging. Meanwhile, the success ratio of drilling is improved greatly by using the fluid detection methods based on multi-wave AVO and multi-wave joint inversion. This paper presents a set of reservoir prediction methods of multi-wave fluid detection focusing on western area of Sulige, which are proved to be feasible in the area.
引文
[1][美]渥.伊尔马滋著.地震资料分析——地震资料处理、反演和解释[M].刘怀山,曹孟起,张进等译.北京:石油工业出版社,2006.
[2]马劲风,傅旦丹,刘一峰,等.转换波人工合成地震记录制作及纵、横波层位对比[J].石油地球物理勘探,2004,39(1):60～67.
[3]赵邦六.多分量地震勘探在岩性气藏勘探开发中的应用[J].石油勘探与开发,2008,35(4):397～409.
[2]马劲风,傅旦丹,刘一峰,等.转换波人工合成地震记录制作及纵、横波层位对比[J].石油地球物理勘探,2004,39(1):60～67.
[3]赵邦六.多分量地震勘探在岩性气藏勘探开发中的应用[J].石油勘探与开发,2008,35(4):397～409.
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