鄂尔多斯盆地东部奥陶系古沟槽三维地震识别方法

doi:10.7623/syxb201003011

石油学报 ›› 2010, Vol. 31 ›› Issue (3): 415-419.DOI: 10.7623/syxb201003011

鄂尔多斯盆地东部奥陶系古沟槽三维地震识别方法

张宏 1,2 董宁 1 郑浚茂 3 宁俊瑞 1 武丽 1 张永贵 1 国庆鹏 1

1中国石化石油勘探开发研究院北京 100083； 2中国石油大学北京 102249； 3中国地质大学北京 100083

收稿日期:2009-09-20 修回日期:2010-01-19 出版日期:2010-05-25 发布日期:2010-07-28
通讯作者: 张宏
作者简介:张宏，男，1967年9月生，1991年毕业于石油大学(华东)物探专业，现为中国石化石油勘探开发研究院高级工程师、在站博士后，主要从事储层地震地质综合预测研究工作。
基金资助:
国家科技重大专项研究项目“大型油气田及煤层气开发(2008ZX05002)”部分成果。

3D seismic identification technique for Ordovician erosion flutes in the eastern Ordos Basin

ZHANG Hong 1,2 DONG Ning 1 ZHENG Junmao 3 NING Junrui 1 WU Li 1 ZHANG Yonggui 1 GUO Qingpeng 1

Received:2009-09-20 Revised:2010-01-19 Online:2010-05-25 Published:2010-07-28

摘要/Abstract

摘要：

鄂尔多斯盆地东部下奥陶统风化壳为该区下古生界气藏的主力储层，勘探表明该气藏严格受古岩溶尤其是古沟槽的控制。前人用印模法识别沟槽,预测精度相对较低。采用新的三维地震古地貌研究方法，对富县区块的风化壳沟槽进行了识别。应用本方法不仅识别出了较大的主沟槽，而且还预测出了次级分支沟槽。预测结果为区内下古生界井位部署提供了依据，并提出了一套古沟槽三维地震识别的新方法。

关键词: 鄂尔多斯盆地, 奥陶系, 下古生界气藏, 古岩溶, 古沟槽, 三维地震识别方法

Abstract:

The carbonate weathering crust is a major gas reservoir of the Lower Paleozoic period in the eastern Ordos Basin. The petroleum exploration results proved that the reservoir properties were strictly controlled by palaeokarst, especially by the configuration of erosion flutes. The identification accuracy of the erosion flutes is relatively low using the conventional thickness methods.A new method for recognizing the erosion landform characteristics is proposed on the basis of the 3D seismic geomorphology. The application of the new method in Fuxian area of the eastern Ordos Basin provides the highprecision palaeokarsts distribution for the exploratory well planning. The combination of the 3D seismic geomorphology with the seismic attribute images is valuable for the identification of the Ordovician erosion flutes and can reduce drilling risks. The 3D seismic identification method is proposed for recognizing the erosion flutes.

Key words: Ordos Basin, Ordovician, Lower Paleozoic gas reservoir, palaeokarst, erosion flutes, 3D seismic identification method

张宏董宁郑浚茂宁俊瑞武丽张永贵国庆鹏. 鄂尔多斯盆地东部奥陶系古沟槽三维地震识别方法[J]. 石油学报, 2010, 31(3): 415-419.

ZHANG Hong DONG Ning ZHENG Junmao NING Junrui WU Li ZHANG Yonggui. 3D seismic identification technique for Ordovician erosion flutes in the eastern Ordos Basin[J]. Editorial office of ACTA PETROLEI SINICA, 2010, 31(3): 415-419.

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鄂尔多斯盆地东部奥陶系古沟槽三维地震识别方法

3D seismic identification technique for Ordovician erosion flutes in the eastern Ordos Basin

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