利用测井和地震响应特征识别优质烃源岩——以松南新区断陷群为例
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摘要
常规的优质烃源岩的识别和评价多通过对烃源岩段采样进行地球化学分析来进行,该方法有一定局限性。而地球物理资料蕴含大量的烃源岩信息,运用测井资料和地震资料,并结合地化分析资料,可以更准确地进行烃源岩(特别是优质烃源岩)的识别、追踪。利用测井资料连续性和纵向分辨率高等诸多特点,结合地化资料,建立优质烃源岩的测井响应特征,可以进行优质烃源岩的识别和厚度的划分;利用地震资料不受井资料的约束和平面上的预测性,结合地化分析资料,建立优质烃源岩的地震响应特征,作进一步的横向追踪后,可以把优质烃源岩的分布范围精细地刻画出来。使用该方法对松南断陷群发育的优质烃源岩进行研究,取得了较好效果。
Conventional high-quality source rock was identified and evaluated by geochemical analysis of multi-segment samples from hydrocarbon source rocks,whereas this method had certain limitation.While geophysical data contained lots of hydrocarbon source rock data and by using logging data and seismic data and combined with geochemical data,more accurate identification and tracking of source rocks(especially the high-quality source rocks) could be performed.The continuity,high longitudinal resolution and many other features of logging data were used,combined with geochemical data,logging response characteristics of high-quality source rocks were established to identify high-quality source rocks and divide the thickness.The seismic data with no restraint from well data and predictability in a plane were used,combined with geochemical analysis,seismic response characteristics of high-quality source rocks are established for further lateral tracking of seismic data and made clear the distribution range of high-quality source rocks.The method is used to study high quality source rocks in Songnan Fault Depression Group,good results are achieved.
Conventional high-quality source rock was identified and evaluated by geochemical analysis of multi-segment samples from hydrocarbon source rocks,whereas this method had certain limitation.While geophysical data contained lots of hydrocarbon source rock data and by using logging data and seismic data and combined with geochemical data,more accurate identification and tracking of source rocks(especially the high-quality source rocks) could be performed.The continuity,high longitudinal resolution and many other features of logging data were used,combined with geochemical data,logging response characteristics of high-quality source rocks were established to identify high-quality source rocks and divide the thickness.The seismic data with no restraint from well data and predictability in a plane were used,combined with geochemical analysis,seismic response characteristics of high-quality source rocks are established for further lateral tracking of seismic data and made clear the distribution range of high-quality source rocks.The method is used to study high quality source rocks in Songnan Fault Depression Group,good results are achieved.
引文
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[3]刘超,卢双舫,黄文彪,等,ΔlogR技术改进及其在烃源岩评价中的应用[J].大庆石油地质与开发,2011,30(3):27～31.
[4]程顺国,侯读杰,肖建新.利用测井与地震技术评价优质烃源岩[J].西部探矿工程,2009,21(1):69～72.
[5]王贵文,朱振宇,朱广宇.烃源岩测井识别与评价方法研究[J].石油勘探与开发,2002,29(4):50～52.
[6]张志伟,张龙海.测井评价烃源岩的方法及其应用效果[J].石油勘探与开发,2000,27(3):84～87.
[7]孟伯恩.三种孔隙度测井资料解释方法[J].石油地球物理勘探,1997,32(3):428～430.
[8]赵彦超,马正,姚光庆.Waxman-Smith方程在生油岩评价中的应用:重叠法和双孔隙度法[J].地球科学,1995,20(3):306～313.
[9]黄海平,卢松年.测井资料与烃源岩有机碳含量的定量关系研究[J].江汉石油学院学报,1998,20(3):8～12.
[10]毛传芳.奈曼旗凹陷测井解释及评价[J].国外测井技术,2008,23(2):36～39.
[11]于建国,韩文功,于正军,等.济阳拗陷孔店组烃源岩的地震预测方法[J].石油地球物理勘探,2005,40(3):318～321.
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