烃源岩TOC地球物理定量预测新技术及在珠江口盆地的应用
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摘要
南海东部珠江口盆地富生烃洼陷内部的钻井极少,给烃源岩总有机碳含量(TOC)地球物理预测研究及洼陷的资源潜力评价带来了极大的困难。结合烃源岩测井及地震响应特征,从实测有机碳含量出发,应用测井预测TOC的方法建立虚拟井的TOC曲线,以此为因变量,选取的地震属性作为自变量,建立它们之间的最佳拟合方程,通过三维地震数据体中提取地震属性从而计算得到三维TOC数据体。将该方法应用到珠江口盆地富生烃洼陷惠州洼陷中,得到整体文昌组和恩平组的三维TOC数据体。HZ26洼陷边缘到洼陷深部,有机碳含量明显增大,反映了洼陷深部是优质烃源岩的发育场所,从南部隆起区到洼陷深部,再到北部洼陷边缘,先增大后又逐渐减小的变化特征。
There are few or no drilled wells in the interior of the depression in Pearl River Mouth Basin.This brings great difficulty in the geophysical prediction of the total organic carbon(TOC) in source rocks and in the assessment of the resource potential in the depression.By combining hydrocarbon source rocks and seismic response characteristics,starting from measuring organic carbon content,using logging prediction method of TOC to build TOC curve of the virtual well,as dependent variables,and selecting seismic attributes as independent variables,the paper establishes the best fitting equation and extracts seismic attributes from 3-D seismic data to calculate the 3-D TOC data body.The method is applied to the rich-in hydrocarbon-generating Huizhou depression of Pearl River Mouth Basin in China,and calculates the 3-D TOC data body of the overall Wenchang group and Enping group.This provides important parameters for the correct evaluation of the sub sag hydrocarbon potential.
There are few or no drilled wells in the interior of the depression in Pearl River Mouth Basin.This brings great difficulty in the geophysical prediction of the total organic carbon(TOC) in source rocks and in the assessment of the resource potential in the depression.By combining hydrocarbon source rocks and seismic response characteristics,starting from measuring organic carbon content,using logging prediction method of TOC to build TOC curve of the virtual well,as dependent variables,and selecting seismic attributes as independent variables,the paper establishes the best fitting equation and extracts seismic attributes from 3-D seismic data to calculate the 3-D TOC data body.The method is applied to the rich-in hydrocarbon-generating Huizhou depression of Pearl River Mouth Basin in China,and calculates the 3-D TOC data body of the overall Wenchang group and Enping group.This provides important parameters for the correct evaluation of the sub sag hydrocarbon potential.
引文
[1]许晓宏,黄海平,卢松年,等.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.
[2]徐思煌,朱义清.烃源岩有机碳含量的测井响应特征与定量预测模型以珠江口盆地文昌组烃源岩为例[J].石油实验地质,2010,32(3):290-295.
[3]张寒,朱有光.利用地震和测井信息预测和评价烃源岩以渤海湾盆地富油凹陷为例[J].石油勘探与开发,2007,34(1):55-59.
[4]周总瑛.烃源岩演化中有机碳质量与含量变化定量分析[J].石油勘探与开发,2009,36(4):463-468.
[5]陈义才,沈忠民,李延军,等.过成熟碳酸盐烃源岩有机碳含量下限值探讨以鄂尔多斯盆地奥陶系马家沟组为例[J].石油实验地质,2002,24(5):427-430.
[6]朱俊章,施和生,舒誉,等.珠江口盆地珠一坳陷典型烃源岩热压模拟实验生排烃模式及TOC恢复系数探讨[J].天然气地球科学,2006,17(4):573-578.
[7]张辉,彭平安.烃源岩有机碳含量恢复探讨[J].地球化学,2011,40(1):56-62.
[8]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.
[9]朱光有,金强,张林晔.利用测井信息获取烃源岩地球化学参数[J].测井技术,2003,27(2):104-109.
[2]徐思煌,朱义清.烃源岩有机碳含量的测井响应特征与定量预测模型以珠江口盆地文昌组烃源岩为例[J].石油实验地质,2010,32(3):290-295.
[3]张寒,朱有光.利用地震和测井信息预测和评价烃源岩以渤海湾盆地富油凹陷为例[J].石油勘探与开发,2007,34(1):55-59.
[4]周总瑛.烃源岩演化中有机碳质量与含量变化定量分析[J].石油勘探与开发,2009,36(4):463-468.
[5]陈义才,沈忠民,李延军,等.过成熟碳酸盐烃源岩有机碳含量下限值探讨以鄂尔多斯盆地奥陶系马家沟组为例[J].石油实验地质,2002,24(5):427-430.
[6]朱俊章,施和生,舒誉,等.珠江口盆地珠一坳陷典型烃源岩热压模拟实验生排烃模式及TOC恢复系数探讨[J].天然气地球科学,2006,17(4):573-578.
[7]张辉,彭平安.烃源岩有机碳含量恢复探讨[J].地球化学,2011,40(1):56-62.
[8]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.
[9]朱光有,金强,张林晔.利用测井信息获取烃源岩地球化学参数[J].测井技术,2003,27(2):104-109.
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