【摘要】 通过野外露头、钻井获取大量沉积地层、沉积岩、火山岩地球物理参数,初步分析火山岩重力、磁力、电阻率分布规律。以1∶5万高精度重、磁力资料及电法MT资料为基础,开展基于小波多尺度分析的重磁异常垂向二次导数对石炭系火山岩异常体边界进行约束,结合残差法模型反演提取电性异常体及二维地震解释石炭系火山岩地震相分析,开展综合地球物理勘探。石炭系火山岩主要属性特征为重力高、磁力高、高电阻;局部为重力中高、磁力高、中低电阻,对应的地震反射波阻外形呈扇状,内幕同相轴为中振幅、中高频、弱连续的火山岩储集体。研究区共解释石炭系有利火山岩体10个,受控于EW向断裂,为火山岩油气勘探有利区带。更多还原

【Abstract】 Volcanic hydrocarbon reservoir exploration method is different from the sedimentary,Owing to low 2D seismic resolution capability,it is difficult to identify Contact Relationships between Volcanic rock and surrounding rock.First of all there is a volcanics distribution discipline preliminary analysis of gravity,magnetic force and resistivity,through geophysical parameters of sedimentary formation,sedimentary and volcanic rock at the field outcrops and drilling.On the basis of 1:50000 high-precision gravity,magnetic force and electric MT data,carring out gravity and magnetic anomal vertical second derivative to constraint carboniferous volcanic abnormal body border based on wavelet multiscale analysis,which caombined with electrical abnormal body by means of residual model and seismic interpretation carboniferous volcanic 2D seismic facies analysis to promote integrated interpretation.Carboniferous volcanic main attribute character is gravity high,magnetic high,high resistivity,and locality is gravity high,magnetic high,low resistivity,and the corresponding seismic reflection wave is fanlike shape,Insider with phase axis is medium amplitude,high frequency,weakly continuous volcanic reservoir.We discover ten favorable volcanic rocks in carboniferous Controlled by the fault of EW trend,which is the favorable zone for oil and gas exploration in volcanic rock.更多还原