谱整形提高分辨率处理技术及应用效果分析
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摘要
在常规高分辨率处理之后,CDP道集往往会出现同一反射波组波形不一致、时间不能对齐的现象,使得叠加剖面的分辨率降低。为了获得更高分辨率的剖面,探讨了进一步提高剖面分辨率的潜力所在,指出了实现高分辨率处理的主要技术难点是实现同一反射的波形一致和时间对齐。针对性地提出了地震资料提高分辨率处理的技术,包括低频道剔除、谱整形和再次静校正。实际应用效果表明,在常规高分辨率处理的基础上,采用低频道剔除、谱整形、再次静校正技术使剖面的分辨率和信噪比得到进一步提高。
After conventional high-resolution processing,the CDP gather always appears the inconformity of wave shape in the same reflection wave group,which decreases the resolution of stacking profile. In order to obtain the profile with higher resolution,we probed the potential of further improving the resolution of profile,and pointed out that the key technical point for high-resolution processing is to realize the conformity of wave shape and alignment of time for the same reflection wave group.Then,we proposed a series of technologies for resolution improvement processing,including low-frequency trace muting,spectrum shaping and secondary static correction. Actual application result shows that based on the conventional high-resolution processing,our methods can be used to further improve the resolution and signal-to-noise of the profile.
After conventional high-resolution processing,the CDP gather always appears the inconformity of wave shape in the same reflection wave group,which decreases the resolution of stacking profile. In order to obtain the profile with higher resolution,we probed the potential of further improving the resolution of profile,and pointed out that the key technical point for high-resolution processing is to realize the conformity of wave shape and alignment of time for the same reflection wave group.Then,we proposed a series of technologies for resolution improvement processing,including low-frequency trace muting,spectrum shaping and secondary static correction. Actual application result shows that based on the conventional high-resolution processing,our methods can be used to further improve the resolution and signal-to-noise of the profile.
引文
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[2]谭绍泉,徐锦玺,何京国,等.官1地区高分辨率地震采集技术及应用[J].石油物探,2005,44(6):636-639
[3]张玉芬,李套山,刘小喜,等.多参数约束高分辨率处理方法在东濮凹陷中的应用[J].石油物探,1999,38 (1):115-120
[4]王锡文,孟凡冰,单长冰,等.中原油田高分辨率地震勘探数据处理技术[J].石油物探,2002,41(增刊): 132-134
[5]王西文,赵邦六,吕焕通,等.地震资料相对保真处理方法研究[J].石油物探,2009,48(4):319-331
[6]姚姚,刘兴利,吴俊峰,等.基于随机介质的提高地震记录分辨率的扩频方法[J].石油物探,2009,48(3): 213-220
[7]芮拥军,石林光.准噶尔盆地中部地震资料提高分辨率处理研究[J].石油物探,2007,46(2):181-186
[8]马海珍,茅金根,王丛彬,等.利用最大商伯格预测和时频分析法提高地震资料分辨率[J].石油物探, 2002,41(1):80-83
[9]何汉漪.海上地震资料高分辨率处理技术论文集[M].北京:地质出版社,2001:1-15
[10]俞寿朋.分辨率与信噪比[C]//中油油气勘探软件国家工程研究中心.俞寿朋文集.北京:石油工业出版社,2001:1-86
[11]刘军,黄棱,李刚,等.高精度三维资料精细目标处理方法[J].石油物探,2002,41(增刊):94-97
[12]孙建国,胡中平,刘学伟,等.高分辨率三维地震技术应用研究[J].石油物探,2000,39(增刊):28-34
[13]李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1994:1-8
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