苏北盆地印支面地震属性方法研究
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摘要
苏北盆地中、上古生界具有很好的烃源岩条件。由于受到多期构造运动的改造和地震资料的限制,致使中、上古生界地层的构造特征、分布和保存的多少历来存有争议。为了进一步了解印支面下伏中、上古生界地层在全区的分布状况,应用正反演方法进行尝试。应用一维正演模型和SeisClass模块沿印支面进行地震属性的提取、相关性分析和聚类反演,从有井控制区反演出无井控制区的印支面上下地层接触关系。通过对HQ地区地震属性的剖析,在该区选取均方根振幅和能量半衰时进行聚类反演得到印支面上下地层接触关系平面分布。此方法对于推测全区的印支面下伏残存中、上古生界地层具有很好的指导意义。
In Subei Basin,the hydrocarbon source rocks of Mesozoic and Upper Paleozoic strata are qualified.However,their structure,distribution and preservation have been controversial for years because the strata suffered from multi-period tectonic movement and the seismic data is limited.In this paper,the forward inversion technology is applied to study the distribution of Mesozoic and Upper Paleozoic strata under Indosinian unconformity.The seismic attributes of Indosinian unconformity were extracted,and the relevant analysis and cluster inversion were carried out by one-dimensional forward model and SeisClass module to obtain the stratigraphic contact relationship of the upper and lower Indosinian unconformity.Analysis based on seismic attributes of HQ area,RMS amplitude and energy half decay time were selected to obtain the horizontal distribution of stratigraphic contact relationship of the upper and lower Indosinian unconformity by the cluster inversion.This method is significant to the prediction of the remaining Mesozoic and Upper Paleozoic under Indosinian unconformity in the whole area.
In Subei Basin,the hydrocarbon source rocks of Mesozoic and Upper Paleozoic strata are qualified.However,their structure,distribution and preservation have been controversial for years because the strata suffered from multi-period tectonic movement and the seismic data is limited.In this paper,the forward inversion technology is applied to study the distribution of Mesozoic and Upper Paleozoic strata under Indosinian unconformity.The seismic attributes of Indosinian unconformity were extracted,and the relevant analysis and cluster inversion were carried out by one-dimensional forward model and SeisClass module to obtain the stratigraphic contact relationship of the upper and lower Indosinian unconformity.Analysis based on seismic attributes of HQ area,RMS amplitude and energy half decay time were selected to obtain the horizontal distribution of stratigraphic contact relationship of the upper and lower Indosinian unconformity by the cluster inversion.This method is significant to the prediction of the remaining Mesozoic and Upper Paleozoic under Indosinian unconformity in the whole area.
引文
[1]陈莉琼.苏北盆地形成演化与油气成藏关系研究[J].石油天然气学报,2006,28(4):198-199
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[9]陈军,陈岩.地震属性分析在储层预测中的应用[J].石油物探,2001,40(3):96-98
[2]王杰,刘文汇,秦建中,等.苏北盆地黄桥CO2气田成因特征及成藏机制[J].天然气地球科学,2008,19(6):827-834
[3]刘东鹰,吴冬茹.断裂在盐城朱家墩气藏成藏中的作用[J].石油勘探与开发,2003,30(4):5-6
[4]刘东鹰.苏皖下扬子区中古生界油气勘探方向[J].江汉石油学院学报,2003,25(增刊下):46-47
[5]陆基孟.地震勘探原理[M].北京:石油大学出版社,1983:242-246
[6]巫盛洪,李志荣,龙资强,等.沿层地震属性分析在川东北储层研究中的应用[J].物探化探计算技术,2003,25(3):202-203
[7]王永刚,谢东,乐友喜,等.地震属性分析技术在储层预测中的应用[J].石油大学学报(自然科学版),2003,27(3):30-32
[8]刘文岭,牛彦良,李刚,等.多信息储层预测地震属性提取与有效性分析方法[J].石油物探,2002,41(1):101-103
[9]陈军,陈岩.地震属性分析在储层预测中的应用[J].石油物探,2001,40(3):96-98
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