应用地震属性分析技术刻画河道砂体
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摘要
岩性油藏已成为松辽盆地南部中浅层勘探的主要油藏类型,而河道砂体的识别一直是物探工作者长期研究的重点。此次研究选择了查干花地区新施工完成的三维地震,在"弃砂找河,扬河找砂"的新思路指导下,准确标定目的层及参考标志层并进行精细解释,应用地震属性分析技术进行地震相划分、河道刻画,进而寻找河道砂体。研究认为,在半深湖—浅湖沉积环境下,三角洲前缘水下分支河道和河道间沉积体在地震上有响应,应用地震属性对河道进行了刻画,据此部署探井获得高产油流。
Lithologic reservoir has been the main reservoir type in shallow and middle strata exploration in southern Songliao Basin,but the identification of channel sand body is still a challenge for the geophysical researchers for a long time.On the basis of 3D seismic newly finished in Chahuagan area and the new idea of "searching for river rather than sand,then river for sand",calibrating the target is to carry out the interpretation accurately.Using seismic attributes analysis technique to divide seismic facies and identify the stream channel in order to find out the channel sand body was carried out.The result showed that it is possible to identify the stream channel by using the seismic attributes under the semi-shallow and shallow lake sedimentary environments,and that the lateral information of the seismic data supports the vertical resolution.This technique makes a high oil production.
Lithologic reservoir has been the main reservoir type in shallow and middle strata exploration in southern Songliao Basin,but the identification of channel sand body is still a challenge for the geophysical researchers for a long time.On the basis of 3D seismic newly finished in Chahuagan area and the new idea of "searching for river rather than sand,then river for sand",calibrating the target is to carry out the interpretation accurately.Using seismic attributes analysis technique to divide seismic facies and identify the stream channel in order to find out the channel sand body was carried out.The result showed that it is possible to identify the stream channel by using the seismic attributes under the semi-shallow and shallow lake sedimentary environments,and that the lateral information of the seismic data supports the vertical resolution.This technique makes a high oil production.
引文
[1]齐志彬,樊庆雨,姜呈馥.松辽盆地南部岩性圈闭识别技术与应用[J].吉林石油工业,2006,26(3):10-13.
[2]赵占银,江涛,姜呈馥.保乾大型三角洲岩性油藏成藏条件[J].中国石油勘探,2003,l8(3):45-49.
[3]孙家振,李兰斌.地震地质综合解释教程[M].武汉:中国地质大学出版社,2002.
[4]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.
[5]辛广柱,刘赫,彭建亮,等.地质因素和资料因素对地震属性的影响[J].岩性油气藏,2007,19(1):105-108.
[6]贾承造,池英柳.中国岩性地层油气藏资源潜力与勘探技术[M].北京:石油工业出版社,2004.
[2]赵占银,江涛,姜呈馥.保乾大型三角洲岩性油藏成藏条件[J].中国石油勘探,2003,l8(3):45-49.
[3]孙家振,李兰斌.地震地质综合解释教程[M].武汉:中国地质大学出版社,2002.
[4]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.
[5]辛广柱,刘赫,彭建亮,等.地质因素和资料因素对地震属性的影响[J].岩性油气藏,2007,19(1):105-108.
[6]贾承造,池英柳.中国岩性地层油气藏资源潜力与勘探技术[M].北京:石油工业出版社,2004.
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