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DEEP STRUCTURAL DIP DETERMINATION AND IMPROVED REFLECTION IMAGING USING FULL-WAVEFORM BOREHOLE SONIC DATA
DEEP STRUCTURAL DIP DETERMINATION AND IMPROVED REFLECTION IMAGING USING FULL-WAVEFORM BOREHOLE SONIC DATA
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机译:使用全波形钻孔声波数据的深层结构倾角确定和改进的反射成像
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摘要
The present disclosure relates to borehole sonic logging and, more particularly to, improved reflection imaging of formation structures away from the wellbore. A method for borehole sonic reflection imaging may comprise: disposing a borehole sonic logging tool in a wellbore, wherein the borehole sonic logging tool comprises one or more transmitters and one or more receivers; emitting sound waves from the one or more transmitters; receiving sound waves at the one or more receivers to obtain borehole sonic data; separating up-going arrivals in the borehole sonic data from down-going arrivals in the borehole sonic data; generating a first reflection image based at least on the borehole sonic data; estimating a relative dip angle of a formation bed from the first reflection image; generating an updated velocity model based at least on the relative dip angle; and generating an updated reflection image based at least on the updated velocity model.
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