摘要
也门71区山地地质条件复杂,基岩裸露,激发条件差。提高山地资料品质,是改善地震资料品质的关键。分析旧地震资料,确定了山地激发技术的优化方向,进行了全面的激发参数试验,分别优选出可控震源和炸药震源激发因素,在开阔处采用可控震源激发,空炮段较大时用炸药震源补充。施工时首先详细踏勘,进行精细单线设计,采用弯线施工和变观等方法,多设可控震源激发点。采用优化的激发技术,地震资料品质得到明显提高。
Geological conditions of the mountainous area in Block 71 of Yemen are very complex.The surface of the mountain is covered with thin weathering layer in some places,and the excitation condition is bad.Therefore,the key point of improving the seismic data quality is to optimize the data quality of the mountainous area.The direction and method of optimizing the vitalizing technology was determined through analyzing the former seismic data,and the parameters for dynamite and Vibroseis were decided respectively through comprehensive parameter test.Vibroseis was adopted in the open and wide area and dynamite source was used as supplement where the vacant source points were excessive.Single-line design was performed after scouting the line by means of performing crooked line and changing geometry so as to design as many source points for vibroseis as possible during the real operation.With the new exciting technique,the data quality has been improved greatly.
出处
《物探与化探》
CAS
CSCD
2012年第3期409-413,共5页
Geophysical and Geochemical Exploration
关键词
也门山地
地震勘探
激发
炸药震源
可控震源
mountainous area in Yemen
seismic exploration
exciting dynamite sources
viboseis
