摘要
二维原始地震资料表明,塔里木盆地阿北、顺北和草湖地区的目的层埋藏较深,地表和地下地质构造复杂,静校正问题突出,干扰波发育,信噪比低。通过分偏移距和优势频带静校正组合、多域去噪、精细速度分析和深层叠加成像等主要技术的应用,较好地解决了该区地震资料的静校正和低信噪比问题,提高了深层叠加成像的精度。经初步解释和地质分析认为,所处理剖面同相轴连续性好,信噪比较高,归位准确,剖面所反映的构造形态清楚,规模较大,基本落实了所部署测线工区的地下构造,而且还揭示了一些以前尚未认识到的构造或构造显示,丰富了该区构造特征和构造演化的认识。
The 2-D initial seismic data show that Abel, Shunbei and Caohu areas in Tarim basin are characterized by deep buried target zones, complex surface and subsurface geologic structures, problems in static correction, developed interference wave and low signal-tonoise ratio. This paper uses the techniques such as composite static correction of partial offset distance and dominant frequency, multi-domain noise elimination, accurate velocity analysis and deep superimposed imaging to better deal with the problem appeared in past static correction and tow signal-to-noise ratio, improving the accuracy of the deep superimposed imaging, Preliminary seismic interpretation and geologic analysis indicate that the processed profile is in good continuity of events, high signal-to-noise ratio, proper return, clear structural attitude and larger scale, generally revealing the subsurface structures in the profile-studied area, including some structures or structural shows that never recognized before. This study enriches knowledge about the structural characteristics and structural evolution in this area.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2006年第1期53-55,共3页
Xinjiang Petroleum Geology
关键词
塔里木盆地
地震资料
构造
静校正
信噪比
成像
Tarim basin
seismic data
structure
static correction
signal-to-noise ratio
imaging
