高密度空间采样地震技术发展与展望
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摘要
减小面元尺度,增加空间采样率,是提高分辨率的重要手段。高密度采集技术具有保证空间采样足够和面元属性均匀的小尺度方形面元、接收道数多的显著特点。国外在海上已普遍推广应用高密度空间采样技术,在陆上的研究主要集中在西亚、北非等沙漠地区。国内在华北、准噶尔地区进行了试验,应用效果明显。预期该技术的发展趋势为:以PGS为代表的海上单检拖缆采集技术;以WesternGeco的陆上野外单个检波器高密度分布接收、室内进行道组合处理的技术;国内采用野外多个检波器组合接收、以小面元和高覆盖为特征的技术。
To improve spatial sampling rate on the basis of reducing din scale is an important way to enhance resolution. High density seismic acquisition technology features in microscale square bins that ensure the spatial sampling enough and the bins to have uniform attributes. High density spatial sampling technology is popularized and widely used on the offshore abroad, while the onshore study concentrates in the desert area in West Asia and North America, In China, tests are conducted in North China and Junggar Basin with obvious results. It is predicted that this technology will develop to be a single towered accumulation technology represented by PGS, the composite channel technology using high density distributing and incepting by a single detector onshore represented by WestemGeco. the joint incepting through multiple detectors, microscale square bins and high coverage rate technology will be adopted opshore in China.
To improve spatial sampling rate on the basis of reducing din scale is an important way to enhance resolution. High density seismic acquisition technology features in microscale square bins that ensure the spatial sampling enough and the bins to have uniform attributes. High density spatial sampling technology is popularized and widely used on the offshore abroad, while the onshore study concentrates in the desert area in West Asia and North America, In China, tests are conducted in North China and Junggar Basin with obvious results. It is predicted that this technology will develop to be a single towered accumulation technology represented by PGS, the composite channel technology using high density distributing and incepting by a single detector onshore represented by WestemGeco. the joint incepting through multiple detectors, microscale square bins and high coverage rate technology will be adopted opshore in China.
引文
[1] Ayman Shabrawi,et al.How single-sensor seismic improved image of Kuwait's Minagish Field,First Break.The Leading Edge,2005,Vol.23:63～69
[2] Charles Ramsden,et al.High-resolution 3D seismic imaging in practice.The Leading Edge,2005,Vol.24:423～428
[3] Q-Land-Increasing bandwidth and vertical resolution in the Hassi Messaoud field,Algeria.see:http://www.westerngeo.com
[2] Charles Ramsden,et al.High-resolution 3D seismic imaging in practice.The Leading Edge,2005,Vol.24:423～428
[3] Q-Land-Increasing bandwidth and vertical resolution in the Hassi Messaoud field,Algeria.see:http://www.westerngeo.com
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