SK地区目标地震勘探采集设计技术及应用效果
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摘要
目标地震勘探采集技术是针对地震勘探中的复杂地质构造特点进行针对性采集设计的方法。在 SK地区 ,地下地质构造非常复杂 ,以前所采用观测系统炮检距分布不均匀 ,方位角较窄 ,覆盖次数较低 ,使该地区义东大断裂系统及潜山构造资料的信噪比较低 ,无法进行精细的构造解释和油藏描述。本文提供了一种针对复杂地质构造进行精细目标地震采集的设计方法 ,并在野外实际生产中运用一系列的高精度采集技术手段和措施 ,使目标区域内的资料品质整体水平比以往有了较大幅度的提高 ,最终获得了可用于精细构造解释的地震剖面。通过该地区成功应用的实例表明 ,目标地震采集技术对于解决复杂地质构造区域资料较差的问题是一种很好的方法 ,对以后类似工区的采集也具有参考价值
Object oriented seismic acquisition technique has been presented because of complicated geologic structure presented in seismic exploration.Because of complicated subsurface geologic structure in SK area,non uniform offset distribution,small azimuth and lower fold in old geometry resulted in data with poor S/N ratio in Yidong fault system and in buried hill structure of the area,which is impossible of making subtle structural interpretation and reservoir description .In order to get excellent data in that region,the paper presented an idea that can solve the problems,that is careful object oriented seismic acquisition design aiming at complicated geologic structure and carrying out a set of high precision acquisition tools and measures in field production,so that the total quality of data in object area has been greatly improved than it was before,which resulted in seismic sections capable of using for subtle structural interpretation.The real cases of successful application of this acquisition technique in the area showed that the object oriented seismic acquisition is a good tool for solving the poor data quality in complicated geologic structure area,which has referential value to the acquisition in later similar area.
Object oriented seismic acquisition technique has been presented because of complicated geologic structure presented in seismic exploration.Because of complicated subsurface geologic structure in SK area,non uniform offset distribution,small azimuth and lower fold in old geometry resulted in data with poor S/N ratio in Yidong fault system and in buried hill structure of the area,which is impossible of making subtle structural interpretation and reservoir description .In order to get excellent data in that region,the paper presented an idea that can solve the problems,that is careful object oriented seismic acquisition design aiming at complicated geologic structure and carrying out a set of high precision acquisition tools and measures in field production,so that the total quality of data in object area has been greatly improved than it was before,which resulted in seismic sections capable of using for subtle structural interpretation.The real cases of successful application of this acquisition technique in the area showed that the object oriented seismic acquisition is a good tool for solving the poor data quality in complicated geologic structure area,which has referential value to the acquisition in later similar area.
引文
[1] 李庆忠.走向精确勘探的道路.北京:石油工业出版社,1993
[2] 俞寿朋.陆上三维地震勘探的设计与施工.北京:石油工业出版社,1996
[3] 陆基孟主编.地震勘探原理.山东东营:石油大学出版社,1993
[4] 俞寿朋.高分辨率地震勘探.北京:石油工业出版社,199
[2] 俞寿朋.陆上三维地震勘探的设计与施工.北京:石油工业出版社,1996
[3] 陆基孟主编.地震勘探原理.山东东营:石油大学出版社,1993
[4] 俞寿朋.高分辨率地震勘探.北京:石油工业出版社,199
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