摘要
从理论上讲,层析静校正技术能解决任何复杂地表条件下的表层结构模型反演,但由于受到野外采集观测系统、初始模型、方程解法、平滑因子等诸多因素的影响,复杂地表探区的层析反演模型和静校正量精度仍然满足不了地震成像需求。结合福津盆地表层结构特征,针对层析法在复杂地表区应用存在高频精度不高、边界效应、交点闭合等问题,提出了在实际资料处理中所采取的一系列方法,使地震资料处理成像品质进一步提高,此套方法可推广应用至其他类似的复杂地表探区。
In theory, the present tomographic static correction technique can be used to deal with the inversion of surface structure model under any complex surface condition. Because of the influences of field acquisition geometry design, initial model, equation solutions and smootiling factor, etc, the precision of tomographic inversion model and static correction still fails to meet the need of seismic imaging of such a complicated exploration area. Aiming at the problems of lower high-frequency precision, border effect and cross-point closure exist- ed in application of tomography to complex surface area, this paper describes a series of methods applied in actual data processing, based on the surface structure characteristics in Fujin basin, and the distinctive effect indicates that the imaging quality of seismic data process- ing has been further improved, and the technique may be popularized for application to the other similar complex exploration areas.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第5期563-566,共4页
Xinjiang Petroleum Geology
关键词
福津盆地
表层结构
层析
初至时间
静校正
差分法
Fujin basin
surface structure
tomography
first break time
static correction
difference method
