复杂地质体中煤系地层的大地电磁测深法识别技术——以合肥盆地石炭二叠系煤系地层识别为例
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摘要
合肥盆地上古生界煤系地层在地震剖面上以叠瓦冲断片的形式构成中生界盆地的基底,且部分地区反射特征不明确,利用地震资料难以追踪和描述其空间分布。在利用电法资料研究该区的过程中,应用拟地震处理?地质分层成像处理和三维成像处理等新的技术和方法,较好地提取了合肥盆地石炭—二叠系的电性层。以此为基础,在地震剖面上进行了煤系地层的追踪,初步掌握了石炭—二叠系的分布,为盆地深化研究奠定了基础。
Electric survey has yielded good results in complex belts,deep formations and large-sized structures.Upper Paleozoic coal measure strata in Hefei basin present imbricate reflections on seismic sections,composing the basement of Mesozoic basin.Nevertheless,the reflections are obscure in some areas,and hence it is difficult to trace and describe the spatial distribution with the help of seismic data.New electric techniques such as seismic fitting processing,geological horizon imaging and 3D imaging processing are described briefly in this paper,and it is shown that,with these techniques,Permo-Carboniferous electric horizons can be extracted quite satisfactorily in Hefei basin.Coal measure strata were traced on seismic sections,and the distribution of Permo-Carboniferous strata was roughly determined,which makes up the foundation for further basin research.
Electric survey has yielded good results in complex belts,deep formations and large-sized structures.Upper Paleozoic coal measure strata in Hefei basin present imbricate reflections on seismic sections,composing the basement of Mesozoic basin.Nevertheless,the reflections are obscure in some areas,and hence it is difficult to trace and describe the spatial distribution with the help of seismic data.New electric techniques such as seismic fitting processing,geological horizon imaging and 3D imaging processing are described briefly in this paper,and it is shown that,with these techniques,Permo-Carboniferous electric horizons can be extracted quite satisfactorily in Hefei basin.Coal measure strata were traced on seismic sections,and the distribution of Permo-Carboniferous strata was roughly determined,which makes up the foundation for further basin research.
引文
[1]贾承造,何登发,雷振雨,等.前陆冲断带油气勘探[M].北京:石油工业出版社,2000.
[2]时华星,宋明水,徐春华,等.煤型气地质综合研究思路与方法[M].北京:地质出版社,2004.
[3]黄智辉,陈耀岑.煤田地球物理测井[M].武汉:武汉地质学院出版社,1986.
[4]王家林,王一新.石油重磁解释[M].北京:石油工业出版社,1991.
[5]王家映.地球物理反演理论[M].武汉:中国地质大学出版社,1998.
[6]Mcmechan S L G A,Aiken C L V.相区成像——电磁波场中的等效地震偏移算法[J].石油物探译丛,1989,(1).
[7]马在田.地震成像技术——有限差分法偏移[M].北京:石油工业出版社,1989.
[8]Zhdanov MS,Traynin P,Booker J R.Underground imaging by fre-quency-domain electromagnetic migration[J].Geophysics,1996,61(3).
[9]Macnae J,Lamontagne Y.Imaging quasi-layered conductive struc-ture by simple processing of transient electromagnetic data[J].Ge-ophysics,1987.
[10]严良俊,胡文宝,等.电磁勘探方法及其在南方碳酸盐岩地区的应用[M].北京:石油工业出版社,2001.
[11]陈乐寿,王光锷.大地电磁测深法[M].北京:地质出版社,1990,120.
[12]朴化荣.电磁测深法原理[M].北京:地质出版社,1990,23.
[13]李丕龙,李学田,宋明水,等.合肥盆地石油地质与地球物理特征研究及进展[M].北京:地质出版社,2003.
[2]时华星,宋明水,徐春华,等.煤型气地质综合研究思路与方法[M].北京:地质出版社,2004.
[3]黄智辉,陈耀岑.煤田地球物理测井[M].武汉:武汉地质学院出版社,1986.
[4]王家林,王一新.石油重磁解释[M].北京:石油工业出版社,1991.
[5]王家映.地球物理反演理论[M].武汉:中国地质大学出版社,1998.
[6]Mcmechan S L G A,Aiken C L V.相区成像——电磁波场中的等效地震偏移算法[J].石油物探译丛,1989,(1).
[7]马在田.地震成像技术——有限差分法偏移[M].北京:石油工业出版社,1989.
[8]Zhdanov MS,Traynin P,Booker J R.Underground imaging by fre-quency-domain electromagnetic migration[J].Geophysics,1996,61(3).
[9]Macnae J,Lamontagne Y.Imaging quasi-layered conductive struc-ture by simple processing of transient electromagnetic data[J].Ge-ophysics,1987.
[10]严良俊,胡文宝,等.电磁勘探方法及其在南方碳酸盐岩地区的应用[M].北京:石油工业出版社,2001.
[11]陈乐寿,王光锷.大地电磁测深法[M].北京:地质出版社,1990,120.
[12]朴化荣.电磁测深法原理[M].北京:地质出版社,1990,23.
[13]李丕龙,李学田,宋明水,等.合肥盆地石油地质与地球物理特征研究及进展[M].北京:地质出版社,2003.
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