高倾角地层地震勘探在新疆尼勒克煤田勘探中的应用  

Application of Seismic Prospecting in Nilka High Dip Angled Strata Coalfield in Xinjiang

作　　者：杨为民[1] 

机构地区：[1]山西省地球物理化学勘查院,山西运城044004

出　　处：《中国煤田地质》2006年第5期49-51,共3页Coal Geology of China

摘　　要：尼勒克井田的浅表层地震地质条件差,深部地质构造复杂,地层倾角大。通过建立地质构造模型,反演出高倾角地层的地震记录,针对高倾角地层地震反射波的特点,采用小道距观测,在资料处理方法上着重注意原始资料分析、静校正处理、反褶积测试、叠前偏移技术等环节。该区勘探结果表明:在高倾角地层从事地震勘探,首先要根据地震地质条件作好构造模型及反演记录,着重做好变观措施,其次选取合理的处理模块,做好叠前偏移技术,兼顾干扰波去除,即可获得满意的勘探效果。The near-surface seismic-geologic condition in Nilka minefield is poor, while the deep part geological structure is complicated and has high dip angled strata. Through the making of geological structural model, high dip angled strata seismic records were conversed. Aimed at high dip angled strata seismic reflection wave characteristics, small group interval observation is ＇used. During the data processing, pays attention to technical links of original data analysis, statics processing, deconvolution testing, prestack migration. The prospecting results in the area indicated that： to apply seismic prospecting in high dip angled strata areas, firstly make a good structural model according to seismic-geologic condition and conversion records, especially shotpoint transferring; secondly select a rational processing module and make good prestack migration, keep one eye on disturbing wave abating, thus satisfied prospecting results will be obtained.

关 键 词：叠前偏移技术 初至折射静校正 覆盖次数 高倾角地层 地震勘探 

分 类 号：P631.4[天文地球—地质矿产勘探]