滩浅海地区煤田三维地震勘探难点与对策
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摘要
滩浅海地区煤田三维地震勘探方法具有陆地勘探和海上勘探两重性,地震资料在能量、频率和相位上存在较大差异。以LK工区为例,分析了滩浅海地区野外采集和数据处理的难点,根据实际地质条件给出了相应的技术对策。在勘探采集阶段,通过声纳二次定位、点震源激发、合理变观等措施保证了原始资料采集的质量;在资料处理阶段,应用SLS初至波二次定位和子波匹配等技术提高了剖面的信噪比和分辨率。
3-D coal seismic exploration in beach and neritic zone has dual nature of land and offshore exploration.Therefore,the acquired seismic data are varied greatly in terms of energy,frequency,and phase.This paper illustrated the data acquisition and processing approaches of 3-D coal seismic exploration in the beach and neritic zone in LK working area.To ensure the quality of raw data,sonar secondary positioning,point source,and variable layout were adopted during data acquisition,and first arrival SLS secondary positioning and wavelet matching technology were used in data processing.Desire results have been achieved by applying the proposed methods.
3-D coal seismic exploration in beach and neritic zone has dual nature of land and offshore exploration.Therefore,the acquired seismic data are varied greatly in terms of energy,frequency,and phase.This paper illustrated the data acquisition and processing approaches of 3-D coal seismic exploration in the beach and neritic zone in LK working area.To ensure the quality of raw data,sonar secondary positioning,point source,and variable layout were adopted during data acquisition,and first arrival SLS secondary positioning and wavelet matching technology were used in data processing.Desire results have been achieved by applying the proposed methods.
引文
1宋玉龙.滩浅海两栖地区油气地震勘探激发接收技术研究[J].地球物理学进展,2004,19(2):424~430
2徐锦玺,邱燕,何京国,等.滩浅海地震勘探采集技术应用[J].地球物理学进展,2005,20(1):66~70
3宋玉龙.滩浅海地区地震勘探存在问题及其解决方法[J].石油物探,2005,44(4):343~348
4谭绍泉.新型陆用压电检波器在滩浅海地区地震勘探中的应用及效果[J].石油物探,2004,43(2):106~110
2徐锦玺,邱燕,何京国,等.滩浅海地震勘探采集技术应用[J].地球物理学进展,2005,20(1):66~70
3宋玉龙.滩浅海地区地震勘探存在问题及其解决方法[J].石油物探,2005,44(4):343~348
4谭绍泉.新型陆用压电检波器在滩浅海地区地震勘探中的应用及效果[J].石油物探,2004,43(2):106~110
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