地震地质多信息融合的井震标定方法研究
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摘要
针对常规合成记录标定技术存在无法满足精细储层预测和精细构造解释精度等难题,首次创新性地采用了一套高精度的小波分频标定技术,实现了地震地质多信息融合的分频井震标定、分频地质标定的新技术新方法,逐级提高了井震标定的精度,克服了子波不确定性对井震标定的影响,突破了传统依赖标定的相关系数判别标定结果的思维定势,将地震与地质信息有机结合在一起,减小标定的不确定性。在实际应用中对砂泥岩薄互层复合波、复杂岩性组合、地震反射特征不清、储层横向变化快等复杂的地质条件下,在精细井震标定方面取得了良好的效果。
The conventional synthetic record calibration technique can not satisfy fine reservoir prediction and precise structural interpretation.The technology of high-precision wavelet frequency division calibration was first adopted,and new technologies and methods that include frequency division of fine well-to-seismic calibration and frequency division geological calibration were carried out with the integration of seismic and geological information.The accuracy of well-to-seismic calibration is improved step by step,wavelet uncertainty on the impact of well-to-seismic calibration was overcome,the traditional way dependant on the coefficient of calibration to distinguish calibration results was broken,and the seismic and geological information were organic combined to reduce the calibration uncertainty.In practical applications,under complicated geological conditions such as thin interbeds of sandstone and shalestone complex wave,complex lithology combination,reservoir change rapidly in lateral,seismic reflection characteristics unclear,this method has gained good effects in fine well seismic calibrations.
The conventional synthetic record calibration technique can not satisfy fine reservoir prediction and precise structural interpretation.The technology of high-precision wavelet frequency division calibration was first adopted,and new technologies and methods that include frequency division of fine well-to-seismic calibration and frequency division geological calibration were carried out with the integration of seismic and geological information.The accuracy of well-to-seismic calibration is improved step by step,wavelet uncertainty on the impact of well-to-seismic calibration was overcome,the traditional way dependant on the coefficient of calibration to distinguish calibration results was broken,and the seismic and geological information were organic combined to reduce the calibration uncertainty.In practical applications,under complicated geological conditions such as thin interbeds of sandstone and shalestone complex wave,complex lithology combination,reservoir change rapidly in lateral,seismic reflection characteristics unclear,this method has gained good effects in fine well seismic calibrations.
引文
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[3]刘全新.储层预测与地震反演[C]//俄罗斯地球物理勘探前沿技术文集.北京:石油工业出版社,2000:203-208.
[4]雍学善.一种三维高精度储层参数反演方法[J].石油地球物理勘探,1997,32(6):852-856.
[5]樊长江,王贤,邓宏文,等.地震反演中储层表征的对策和思路[J].天然气地球科学,2006,17(4):543-546.
[6]黄安敏,裴建翔,陈志宏,等.油气储层预测技术在琼东南盆地BD13区的应用[J].天然气地球科学,2006,17(4):518-522.
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