塔里木盆地卡4区块AVO研究
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摘要
塔里木盆地江汉探区卡塔克4区块位于塔里木盆地中部,有效面积为2 330 km2.在古城墟鼻状隆起构造背景上.该区块奥陶系鹰山组有气层显示(经古隆1井证实),为了弄清奥陶系内幕鹰山组储层分布,寻找有利区块,围绕卡4区块古城墟鼻隆的下步勘探部署开展了AVO处理.卡4区块奥陶系地层埋藏深(达6 000多米),目的层地震资料品质较差,唯一达到目的层的古隆1井属低产气井(日产气10 067 m3),低孔低渗的储层给叠前反演带来了很大困难.本文从AVO技术入手,通过不断深入的研究探讨,展开了储层预测技术攻关研究,为该区储层预测和含油气判别提供了有力依据.
The Ka-4 region lies in the middle of Tarim basin.It covers about 2330 sq.km.Low gas has been validated in Yingshan group of Ordovician by the Gulong1 well.In order to make clear the distribution of the gas reservior and found other available gas reservior,avo reserch is done over this region.The pre-stack information is more aboundant than the post-stack seismic data.The Ordovician stratum is buried very deep up to 6000 meters below the ground.The signal versus noise of the seismic data is very low in the Ordovician stratum.Well interpretation has shown low porosity and saturation in Ordovician stratum.These factors above make it certain difficult for the pre-stack inversion.The paper analyse the problem and do the research of avo.The result of research offer certain reverence for forecasting the reservior of Ka-4 region.
The Ka-4 region lies in the middle of Tarim basin.It covers about 2330 sq.km.Low gas has been validated in Yingshan group of Ordovician by the Gulong1 well.In order to make clear the distribution of the gas reservior and found other available gas reservior,avo reserch is done over this region.The pre-stack information is more aboundant than the post-stack seismic data.The Ordovician stratum is buried very deep up to 6000 meters below the ground.The signal versus noise of the seismic data is very low in the Ordovician stratum.Well interpretation has shown low porosity and saturation in Ordovician stratum.These factors above make it certain difficult for the pre-stack inversion.The paper analyse the problem and do the research of avo.The result of research offer certain reverence for forecasting the reservior of Ka-4 region.
引文
[1]刘光鼎.我国油气资源勘探开发中存在地主要问题及对策[J].地球物理学进展,2005,20(1):1~3.
[2]殷八斤,曾灏,等.AVO技术的理论与实践[M].北京:石油工业出版社,1995.
[3]郑晓东.Zoeppritz方程的近似及其应用[J].石油地球物理勘探,1991,26(2):129~144.
[4]杨云岭,韩文功.天然气藏识别与预测技术[M].东营:石油大学出版社,1996.
[5]郭全仕.AVO分析.勘探地球物理学家协会.SEG第69届年会论文概要[M].北京:石油工业出版社,2000.
[6]李景叶,陈小宏,郝振江,芮振华.多波时移地震AVO反演研究[J].地球物理学报,2005,48(4):902~908.
[7]牛滨华,文鹏飞,温宁,符溪,孙春岩,李佳,孙晟.基于BSR的AVO正演估算水合物含量方法的研究[J].地球物理学报,2006,49(1):143~152.
[8]阮爱国,李家彪,初凤友,李湘云.海底天然气水合物层界面反射AVO数值模拟[J].地球物理学报,2006,49(6):1826~1835.
[9]彭苏萍,高云峰,杨瑞召,陈华靖,陈信平.AVO探测煤层瓦斯富集的理论探讨和初步实践——以淮南煤田为例[J].地球物理学报,2005,48(6):1475~1486.
[10]孙树海,牛彦良.薄互层条件下AVO技术的应用[J].地球物理学报,1991,34(1):99~106.
[11]顾功叙.直接找油气的地球物理新原理的进展现状[J].地球物理学报,1991,34(1):107~114.
[12]杨复生.任意点震源τ-P域地震图的解及AVO分析[J].地球物理学报,1993,36(5):657~664.
[13]季钟霖,李建林,熊舜华,魏勇作,彭希龄,赖仲康.含油岩石弹性特征及其与油气的关系[J].地球物理学报,1993,36(2):242~255.
[14]阴可,杨慧珠.各向异性介质中的AVO[J].地球物理学报,1998,41(3):382~391.
[15]姚正和.用先验地质信息约束的非线性AVO反演[J].地球物理学报,1994,1(sup):467~476.
[16]周士弘.利用井孔首波求取V_S和Q_P值的广义线性反演方法的应用研究[J].地球物理学报,1995,增刊1:242~252.
[17]张璐,印兴耀,孙成禹.双相介质的AVO正演模拟[J].地球物理学进展,2005,20(2):319~322.
[18]蒋鸿亮,陈湛文,陈小宏.高分辨率AVO反演技术研究[J].地球物理学进展,2006,21(2):478~482.
[19]Shuey R T.A simplification of the Zoeppritz equations[J].Geophysics,1985,50:609~614.
[20]Ostrander W J.Plane wave reflection coefficients for gassands at nonnormal angles of incidence[J].Geophysics,1984,49:1637~1648.
[2]殷八斤,曾灏,等.AVO技术的理论与实践[M].北京:石油工业出版社,1995.
[3]郑晓东.Zoeppritz方程的近似及其应用[J].石油地球物理勘探,1991,26(2):129~144.
[4]杨云岭,韩文功.天然气藏识别与预测技术[M].东营:石油大学出版社,1996.
[5]郭全仕.AVO分析.勘探地球物理学家协会.SEG第69届年会论文概要[M].北京:石油工业出版社,2000.
[6]李景叶,陈小宏,郝振江,芮振华.多波时移地震AVO反演研究[J].地球物理学报,2005,48(4):902~908.
[7]牛滨华,文鹏飞,温宁,符溪,孙春岩,李佳,孙晟.基于BSR的AVO正演估算水合物含量方法的研究[J].地球物理学报,2006,49(1):143~152.
[8]阮爱国,李家彪,初凤友,李湘云.海底天然气水合物层界面反射AVO数值模拟[J].地球物理学报,2006,49(6):1826~1835.
[9]彭苏萍,高云峰,杨瑞召,陈华靖,陈信平.AVO探测煤层瓦斯富集的理论探讨和初步实践——以淮南煤田为例[J].地球物理学报,2005,48(6):1475~1486.
[10]孙树海,牛彦良.薄互层条件下AVO技术的应用[J].地球物理学报,1991,34(1):99~106.
[11]顾功叙.直接找油气的地球物理新原理的进展现状[J].地球物理学报,1991,34(1):107~114.
[12]杨复生.任意点震源τ-P域地震图的解及AVO分析[J].地球物理学报,1993,36(5):657~664.
[13]季钟霖,李建林,熊舜华,魏勇作,彭希龄,赖仲康.含油岩石弹性特征及其与油气的关系[J].地球物理学报,1993,36(2):242~255.
[14]阴可,杨慧珠.各向异性介质中的AVO[J].地球物理学报,1998,41(3):382~391.
[15]姚正和.用先验地质信息约束的非线性AVO反演[J].地球物理学报,1994,1(sup):467~476.
[16]周士弘.利用井孔首波求取V_S和Q_P值的广义线性反演方法的应用研究[J].地球物理学报,1995,增刊1:242~252.
[17]张璐,印兴耀,孙成禹.双相介质的AVO正演模拟[J].地球物理学进展,2005,20(2):319~322.
[18]蒋鸿亮,陈湛文,陈小宏.高分辨率AVO反演技术研究[J].地球物理学进展,2006,21(2):478~482.
[19]Shuey R T.A simplification of the Zoeppritz equations[J].Geophysics,1985,50:609~614.
[20]Ostrander W J.Plane wave reflection coefficients for gassands at nonnormal angles of incidence[J].Geophysics,1984,49:1637~1648.
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