西江主洼中深层地震采集攻关
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摘要
近期的研究表明,西江主洼的勘探重点和优势在中深层。由于以往采集的地震资料在中深层信噪比和分辨率都较低,严重制约了勘探工作的进一步开展。为了摆脱地震资料品质对勘探工作的束缚,努力提高中深层地震资料的信噪比和分辨率,在西江主洼通过对采集参数的研究,采用大容量震源、适当加深震源和电缆的沉放深度、增加电缆长度等一系列的技术措施,取得了较好的效果。
The recent researches revealed that the focus and advantages in Xijiang Sag were in the middle-deep layer. The signal-to-noise ratio and resolution ratio of seismic data previously acquired from the middle-deep layer were relatively low,which greatly restricted further oil exploration. In order to avoid the restriction of seismic data quality to the exploration and enhance the signal-to-noise ratio and resolution ratio of the middle-deep layer,by studying the seismic parameters in Xijiang Sag,a series of techniques such as large volume air-gun source,deepen air-gun source and streamer,long array seismic acquisition were employed The result is proved to be quite satisfactory and better result is obtained,
The recent researches revealed that the focus and advantages in Xijiang Sag were in the middle-deep layer. The signal-to-noise ratio and resolution ratio of seismic data previously acquired from the middle-deep layer were relatively low,which greatly restricted further oil exploration. In order to avoid the restriction of seismic data quality to the exploration and enhance the signal-to-noise ratio and resolution ratio of the middle-deep layer,by studying the seismic parameters in Xijiang Sag,a series of techniques such as large volume air-gun source,deepen air-gun source and streamer,long array seismic acquisition were employed The result is proved to be quite satisfactory and better result is obtained,
引文
[1]杜家元,施和生,朱明,等.西江主洼相对低地温条件下油气成藏特征和勘探潜力分析[J].中国海上油气,2008,20(5):287~292.
[2]陈长民,施和生,许仕策,等.珠江口盆地(东部)第三系油气藏形成条件[M].北京:科学出版社,2003.
[3]王桂华.海上地震数据采集主要参数选取方法[J].海洋石油,2004,24(3):35~39.
[4]王云峰.海上高分辨率地震采集[J].中国海上油气,1995,9(4):263~270.
[5]马建德,王桂华,杨丽娜.海上地震数据采集参数选取方法研究[A].中国地球物理学会第二十届年会论文集[C].2004.
[6]何汉漪.海上高分辨率地震技术及其应用[M].北京:地质出版社,2001.
[2]陈长民,施和生,许仕策,等.珠江口盆地(东部)第三系油气藏形成条件[M].北京:科学出版社,2003.
[3]王桂华.海上地震数据采集主要参数选取方法[J].海洋石油,2004,24(3):35~39.
[4]王云峰.海上高分辨率地震采集[J].中国海上油气,1995,9(4):263~270.
[5]马建德,王桂华,杨丽娜.海上地震数据采集参数选取方法研究[A].中国地球物理学会第二十届年会论文集[C].2004.
[6]何汉漪.海上高分辨率地震技术及其应用[M].北京:地质出版社,2001.
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