测井约束地震岩性预测方法及应用——以汤原断陷达连河组SD_2段为例
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摘要
为精细刻画汤原断陷达连河组的岩性展布,运用测井约束地震岩性预测方法,利用研究区丰富的井震及钻井资料,拟合速度-岩性间的函数关系,经高精度层序地层约束后,进行岩性预测。预测结果符合率达86%,揭示了目的层岩性空间展布规律:沉积厚度高值区和砂体厚度中心主要分布于控盆断裂一侧,在研究区内主要分布于靠近盆缘断裂的东部凹陷带。
In order to depict lithologic distribution of Dalianhe Formation in Tangyuan Fault Depression subtly,lithologic prediction of log-constrained seismic,plentiful logging-seismic and drilling data have been used to fit out the functional relation of velocity-lithology.Lithologic prediction has been done after high-precision sequence stratigraphy constraint,and the coincidence rate of prediction result is up to 86%,which reveales the rule of lithologic spatial distribution is the high value area of sedimentary thickness and the thickness center of sand body distribute mainly in basin controlling faults side,and distribute mainly in the eastern depression zone near the basin boundary fault in the area.
In order to depict lithologic distribution of Dalianhe Formation in Tangyuan Fault Depression subtly,lithologic prediction of log-constrained seismic,plentiful logging-seismic and drilling data have been used to fit out the functional relation of velocity-lithology.Lithologic prediction has been done after high-precision sequence stratigraphy constraint,and the coincidence rate of prediction result is up to 86%,which reveales the rule of lithologic spatial distribution is the high value area of sedimentary thickness and the thickness center of sand body distribute mainly in basin controlling faults side,and distribute mainly in the eastern depression zone near the basin boundary fault in the area.
引文
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[3]王家映.地球物理反演问题概述[J].工程地球物理学报,2007,4(1):1-3.WANG Jia-ying.Introduction to geophysical inverse prob-lems[M].Chinese Journal of Engineering Geophysics,2007,4(1):1-3.
[4]周竹生,周熙襄.宽带约束反演方法[J].石油地球物理勘探,1993,28(5):523-536.ZHOU Zhu-sheng,ZHOU Xi-rang.Band-constrained in-version[J].Oil Geophysical Prospecting,1993,28(5):523-536.
[5]李正文,许多.油气储集层AVO非线性反演方法及应用研究[J].石油物探,2002,41(1):23-26.LI Zheng-wen,XU Duo.Non-linear inversion on AVOresponses of hydrocarbon reservoirs and its applications[J].Geophysical Prospecting for Petroleum,2002,41(1):23-26.
[6]Alkhalifah T.Trinidad地区地震各向异性-一种岩性预测的新方法[J].朱成宏,译.石油物探译丛,2001(4):67-73.Alkhalifah T.Trinidad area s seismic anisotropy-a newway of lithological prediction[J].ZHU Cheng-hong,translated.Translations of Petroleum Exploration,2001(4):67-73.
[7]白新华,罗群.汤原断陷中生界地层及含油气远景预测[J].大庆石油地质与开发,1997,16(4):30-34.BAI Xin-hua,LUO Qun.Mesozoic formations and hydro-carbon potential in Tangyuan downchasm[J].PetroleumGeology&Oilfield Development in Daqing,1997,16(4):30-34.
[8]罗群,白新华.汤原断陷断裂构造特征及其对油气成藏的控制作用[J].长春科技大学学报,1999,29(3):247-251.LUO Qun,BAI Xin-hua.The fault tectonic features andits control roles to oil and gas accumulating in TangyuanFault Depression[J].Journal of Changchun University ofScience and Technology,1999,29(3):247-251.
[9]何玉平,刘招君,董清水,等.依舒地堑汤原断陷古近系湖底扇沉积与层序特征[J].世界地质,2006,25(1):24-29.HE Yu-ping,LIU Zhao-jun,DONG Qing-shui,et al.Sedimentary and sequence characteristics of Paleogenesublacustrine fan of Tangyuan Fault Depression in YishuGraben[J].Global Geology,2006,25(1):24-29.
[10]刘招君,董清水,王嗣敏,等.陆相层序地层学导论与应用[M].北京:石油工业出版社,2002:22-26.LIU Zhao-jun,DONG Qing-shui,WANG Si-min,et al.Introduction to continental sequence stratigraphy&ap-plication[M].Beijing:Petroleum Industry Press,2002:22-26.
[11]徐怀大,王世风,陈开远,等.地震地层学解释基础[M].武汉:中国地质大学出版社,1990:118-121.XUHuai-da,WANG Shi-feng,CHEN Kai-yuan,et al.Basis of seismic stratigraphic interpretation[M].Wu-han:China University of Geosciences Press,1990:118-121.
[12]魏立花,郭精义,杨占龙,等.测井约束岩性反演关键技术分析[J].天然气地球科学,2006,17(5):731-735.WEI Li-hua,GUO Jing-yi,YANG Zhan-long,et al.A-nalysis on key techniques of log constrained lithologicalinversion[J].Natural Gas Geoscience,2006,17(5):731-735.
[13]刘淑华,张宗和,刘建武,等.声波曲线重构反演技术在储层预测中的应用[J].天然气工业,2007,27(增刊A):394-396.LIU Shu-hua,ZHANG Zong-he,LIU Jian-wu,et al.Rebuild of acoustic curve and inversion technique in res-ervoir prediction[J].Natural Gas Industry,2007,27(Suppl.A):394-396.
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