叠前弹性波阻抗反演在四川FL地区礁滩型储层预测中的应用
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摘要
叠前弹性波阻抗反演对礁滩型储层的预测和流体识别较叠后声阻抗反演的可信度更高,可对含油气性进行半定量—定量描述。以四川FL地区礁滩型储层为重点,以叠前弹性波阻抗反演为技术路线,对该地区反演出的数据体进行交汇解释,预测出了该区礁滩型储层的平面分布特点,预测结果与该区仅有的两口钻井资料相吻合。实践表明,用交会法并结合对储层响应敏感的两个参数泊松比和剪切模量进行储层解释,可靠度较高。
Though reef-shoal reservoirs have become increasingly important targets for gas exploration,the methods of the prediction of them and the identification of fluids in them are still in the probing stage. Comparing with poststack acoustic impedance,the pre-stack elastic impedance can be more reliable in quantitative-semiquatitative petroliferous evaluation because of data-based multi-parameter analysis. This method has been applied in the prediction of reef-shoal reservoir in FL area where intersection interpretation is also used after. The result has shown that the reef-shoal reservoir in FL area is characteristic of plane distribution,which is accorded with the data from only two boreholes. It is indicated that it is more reliable to predicate reef-shoal reservoirs by the intersection inter-pretation combining with Poisson ratio and shear module.
Though reef-shoal reservoirs have become increasingly important targets for gas exploration,the methods of the prediction of them and the identification of fluids in them are still in the probing stage. Comparing with poststack acoustic impedance,the pre-stack elastic impedance can be more reliable in quantitative-semiquatitative petroliferous evaluation because of data-based multi-parameter analysis. This method has been applied in the prediction of reef-shoal reservoir in FL area where intersection interpretation is also used after. The result has shown that the reef-shoal reservoir in FL area is characteristic of plane distribution,which is accorded with the data from only two boreholes. It is indicated that it is more reliable to predicate reef-shoal reservoirs by the intersection inter-pretation combining with Poisson ratio and shear module.
引文
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[19]Xu S,White R E.A new velocity for clay-sand mixture[J].Geophysical Prospecting,1995,43(1):91-118.
[20]胡伟光,蒲勇,赵卓男,等.川东北元坝地区长兴组生物礁的识别[J].石油物探,2010,49(1):46-53.
[2]王生海,强子同.四川华蓥山涧水沟上二叠统生物礁[J].石油与天然气地质,1992,12(2):147-154.
[3]范嘉松,吴亚生.川东二叠纪生物礁再认识[J].石油与天然气地质,2002,23(1):12-18.
[4]王一刚,张静,杨雨,等.四川盆地东部上二叠统长兴组生物礁气藏形成机理[J].海相油气地质,1997,5(1):145-152.
[5]王一刚,文应初,张帆.川东地区上二叠统长兴组生物礁分布规律[J].天然气工业,1998,18(6):10-15.
[6]牟传龙,谭钦银,余谦,等.川东北地区上二叠统长兴组生物礁组成及成礁模式[J].沉积与特提斯地质,2004,24(3):65-71.
[7]牟传龙,马永生,余谦,等.四川宣汉盘龙洞生物礁古油气藏油气源分析[J].石油实验地质,2005,27(6):570-574.
[8]马永生,牟传龙,郭彤楼.四川盆地东北部长兴组层序地层与储层分布[J].地学前缘,2005,12(3):179-185.
[9]马永生,牟传龙,郭旭升,等.川东北地区长兴组沉积特征与沉积格局[J].地质论评,2006,52(1):25-29.
[10]Connolly P A.Elastic impedance[J].The Leading Edge,1999,18(4):438-452.
[11]王涛,朱祥,谭代英.毛坝构造飞仙关组裂缝储层综合预测方法[J].石油物探,2009,48(4):383-389.
[12]曹孟起,王九栓,邵林海.叠前弹性波阻抗反演技术及应用[J].石油地球物理勘探,2006,41(3):323-326.
[13]彭真明,李亚林,梁波,等.叠前弹性阻抗在储层气水识别中的应用[J].天然气工业,2007,27(4):43-45,52.
[14]刘卫华,高建虎,陈启艳,等.苏里格气田某工区储层预测可行性研究[J].岩性油气藏,2009,21(2):94-98.
[15]胡伟光.地震相波形分类技术在川东北的应用[J].勘探地球物理进展,2010,33(1):52-57.
[16]于红枫,王英民,李雪,等.Stratimagic波形地震相分析在层序地层岩性分析中的应用[J].煤田地质与勘探,2006,34(1):64-66.
[17]邓传伟,李莉华,金银姬,等.波形分类技术在储层沉积微相预测中的应用[J].石油物探,2008,47(3):262-265.
[18]殷积峰,李军,谢芬,等.波形分类技术在川东生物礁气藏预测中的应用[J].石油物探,2007,46(1):53-57.
[19]Xu S,White R E.A new velocity for clay-sand mixture[J].Geophysical Prospecting,1995,43(1):91-118.
[20]胡伟光,蒲勇,赵卓男,等.川东北元坝地区长兴组生物礁的识别[J].石油物探,2010,49(1):46-53.
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