中古生界地震资料采集技术研究
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摘要
中古生界地震资料一直是地震采集的难点,多年来一直在进行中古生界地震资料采集方法研究和攻关。中古生界勘探由于地下复杂,且激发和接收条件较差,导致资料信噪比低,品质较差。在分析影响资料品质原因的基础上,对中古生界野外采集方法进行了研究,分析了炮间距、排列长度、覆盖次数和宽线采集方法对中古生界成像和信噪比的影响。
It was very difficult for collecting Mesozoic-Paleozoic seismic data,methods for Mesozoic- Paleozoic seismic data acquisition have been researched and developed for years. Because in Mesozoic-Paleozoic strata there existed complex downhole conditions,excitation and receiving conditions were poor,therefore signal-noise ratio was low in data acquisition with poor quality. On the basis of analyzing causes of influencing the data quality,the effects of the methods for Mesozoic-Paleozoic seismic data acquisition are studied,shot intervals its array length,coverage and way of wide-line data acquisition on the imaging and signal-noise ratio in Mesozoic-Paleozoic strata are analyzed.
It was very difficult for collecting Mesozoic-Paleozoic seismic data,methods for Mesozoic- Paleozoic seismic data acquisition have been researched and developed for years. Because in Mesozoic-Paleozoic strata there existed complex downhole conditions,excitation and receiving conditions were poor,therefore signal-noise ratio was low in data acquisition with poor quality. On the basis of analyzing causes of influencing the data quality,the effects of the methods for Mesozoic-Paleozoic seismic data acquisition are studied,shot intervals its array length,coverage and way of wide-line data acquisition on the imaging and signal-noise ratio in Mesozoic-Paleozoic strata are analyzed.
引文
[1]陆基孟.地震勘探原理(上、下册)[M].东营:石油大学出版社,2004.
[2]熊蠢.复杂地区油气地球物理勘探技术(数据采集)[M].北京:石油工业出版社,1999.1~177.
[3]黄东定,陈迎春,唐成鸽,等.黄桥-如皋地区地震采集方法效果分析[J].石油物探,2004,43(2):176~180.
[4]丁建荣,王华忠,李代芳,等.共反射面元方法在下扬子地区的试验[J].石油物探,2003,42(3):414~416.
[5]李忠平.渝鄂湘山地地震勘探资料采集中的几个关键问题[J].石油物探,2000,39(4):42~48.
[2]熊蠢.复杂地区油气地球物理勘探技术(数据采集)[M].北京:石油工业出版社,1999.1~177.
[3]黄东定,陈迎春,唐成鸽,等.黄桥-如皋地区地震采集方法效果分析[J].石油物探,2004,43(2):176~180.
[4]丁建荣,王华忠,李代芳,等.共反射面元方法在下扬子地区的试验[J].石油物探,2003,42(3):414~416.
[5]李忠平.渝鄂湘山地地震勘探资料采集中的几个关键问题[J].石油物探,2000,39(4):42~48.
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