摘要
也门71区块地表及地下地质条件异常复杂,激发接收条件差,原始资料信噪比低,静校正问题突出,资料成像困难,尤其是山地资料更是如此。特殊的地震地质条件,给地震采集带来施工和技术上的困难。为此,通过分析工区地震地质条件及以往资料质量等,对71区块地震资料采集方法进行了研究,通过优选观测系统、激发因素,采用混合震源采集、弯直线施工,地震资料品质大幅提高,该项目的成功经验也可为类似条件区的地震勘探提供借鉴。
The surface and subsurface conditions in Block 71 Yemen are extremely complex,which impedes the shooting and receiving of seismic waves.Previous experiences show that the acquired data are low in signal-to-noise ratio,static correction is difficult to be carried out,and desired images are hard to be obtained,especially for data from mountainous areas.Based on an assessment of exiting data,this paper established a workflow for seismic acquisition.The quality of seismic data has been improved greatly by optimization of geometry and shooting parameters,and adaptation of mixed sources as well as crooked and linear line.
出处
《勘探地球物理进展》
2008年第4期285-289,共5页
Progress in Exploration Geophysics
