致密砂岩油“甜点”预测技术研究——以渭北油田延长组长3油层为例
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摘要
渭北油田延长组长3油层属于致密砂岩油,储层为辨状河三角洲前缘水下分流河道砂体,砂体厚度薄且横向变化快.地质研究和动态分析表明,宽河道及河道汇聚部位,砂体厚度大,储层物性好,含油饱和度高,油井产量相对较高,是该油田的"甜点"区.由于油藏埋藏浅且地表条件复杂,地震资料分辨率低,河道砂体识别困难;地震振幅属性与砂体厚度对应关系弱。利用常规属性识别河道精度低.本文主要介绍应用谱反演技术进行地震资料处理,有效提高了地震分辨率,处理后的地震资料能够满足厚度小于λ/4的薄砂体识别;通过井震标定、地震正演模拟,总结砂体地震波形特征模式,采用地震波形结构法追踪砂体顶底反射,砂体识别精度大大提高,在密井网区识别砂体与钻井吻合率达90%以上;结合地质研究和动态分析成果,在开发区WB2井区外围优选出三个"甜点"区,是油田下一步开发和产量接替的有利阵地.
Chang3 reservoir of Yanchang Formation in Weibei Oilfield is a tight sandstone oil reservoir.As the reservoir is subaqueous distributary channel sandstone of braided river delta front,the thickness of sandstone is thin and lateral changes quickly.Geology study and dynamic production analysis shows that the broad parts of channel or places,where rivers come together,is oilfield's "sweet spot",with thick sandstone,good physical property,high oil saturation,and high oil production.As the reservoirs are shallow and the surface condition isvery complex,it's difficult to identify sand bodies.And there is no corresponding relation between seismic amplitude properties and thickness of sandstone,so identifying rivers with regular properties has low precision.This paper mainly introduce using spectrum inversion technology to enhance the resolution of seismic data effectively,and the seismic data processed can fulfille identifying sand bodies,whose thickness is less than a quarter wavelength.According to well-seismic calibration and seismic forward simulation,We summarize the seismic waveform structure patterns of the channel sand bodies,and trace top and bottom reflection of them.The precision of sand body recognition is improved evidently,over 90%in crowd-well area.Base on the results of geology research and dynamic analysis,three"sweet spots" areselected,and they are the oilfield's future production and reserves bases.
引文
Cao J H,Qiu Z H,Guo D H,et al.2013.Post-stack seismic spectral-inversion technique and its application[J].Progress in Geophysics(in Chinese),28(1):387-393,doi:10.6038/pg20130143.
    Feng Z Q,Liu J Q,Wang P J,et al.2011.New oil and gas exploration field:volcanic hydrocarbon reservoirsEnlightenment from the discovery of the large gas field in Songliao basin[J].Chinese J.Geophys.(in Chinese),54(2):269-279,doi:10.3969/j.issn.0001-5733.2011.02.001.
    Gong H L,Wang Z Q,Li L M,et al.2008.Predicting carbonate reservoir by applying seismic spectral decomposition technique[J].Progress in Geophysics(in Chinese),23(1):129-135.
    Gong J Q.2009.The application of the forward modeling in exploration[J].Petroleum Geophysics(in Chinese),7(2):13-17.
    Huang H D,Ji Y Z,Zhang C,et al.2013.Application of seismic liquid identification method in prediction of shale gas“sweet spots"in Sichuan basin[J].Journal of Palaeogeography(in Chinese),15(5):672-678.
    Jia C Z,Zou C N,Li J Z,et al.2012.Assessment criteria,main types,basic features and resource prospects of the tight oil in China[J].Acta Petrolei Sinica(in Chinese),33(3):343-350.
    Law B E.2002.Basin-centered gas systems[J].AAPG Bulletin,86(11):1891-1919.
    Lin Yun Study Group.2003.Application of amplitude tuning in surveying geologic target thickness less than 1/4 wavelength[J].Oil Geophysical Prospecting(in Chinese),38(3):268-274.
    Lin S H,Zou C N,Yuan X J,et al.2011.Status quo of tight oil exploration in the United States and its implication[J].Lithologic Reservoirs(in Chinese),23(4):25-30.
    Liu A Q,Chen D Y,Ren K Y.2013.Frequency decomposition and waveform cluster analysis techniques Yinggehai Basin gas field in the deep area of application[J].Progress in Geophysics(in Chinese),28(1):338-344,doi:10.6038/pg20130137.
    Liu G D.2011.Congratulate the new great achievements of Daqing Oil Field on oil and gas exploration[J].Chinese J.Geophys.(in Chinese),54(2):267-268.
    Liu Z Q,Wang Y M,Bai G C,et al.2010.Application of sweetness and its fusion attribute in the research of deep-water reservoir[J].Oil Geophysical Prospecting(in Chinese),45(1):158-162.
    Popov M A,Nuccio V F,Dyman T S,et al.2000.Basin-centered gas systems of the U.S.[R].USGS.
    Sun W J,Fu L Y,Guan X Z,et al.2013.A study on anisotropy of shale using seismic forward modeling in shale gas exploration[J].Chinese J.Geophys.(in Chinese),56(3):961-970,doi:10.6038/cjg20130324.
    Tang X Y,Hu S B,Zhang G C,et al.2014.Geothermal characteristics and hydrocarbon accumulation of the northern marginal basins,South China Sea[J].Chinese J.Geophys.(in Chinese),57(2):572-585,doi:10.6038/cjg20140221.
    Yang S Y,Zhang J C,Huang WD,et al.2013."Sweet spot"types of reservoirs and genesis of tight sandstone gas in Kekeya area,Turpan-Hami basin[J].Acta Petrolei Sinica(in Chinese),34(2):272-282.
    Yi W,Zheng H R,Hu Z Q,et al.2012.Mesozoic petroleum accumulation systems and play fairways in southern Ordos basin[J].Oil&Gas Geology(in Chinese),33(4):591-598.
    Zhang C H,Qiao D W,Li S Z,et al.2011.Integration of oil and gas geophysical exploration technologies for geologically complex areas[J].Chinese J.Geophys.(in Chinese),54(2):374-387,doi:10.3969/j.issa 0001-5733.2011.02.014.
    Zhang J C,Jin Z J,Pang X Q.2000.Formation conditions and internal features of deep basin gas accumulations[J].Experimental Petroleum Geology(in Chinese),22(3):210-214.
    Zhang S,Zhu Y H,Liu H,et al.2013.The application of seismic waveform classification technique for sandstone prediction in shallow-water basin[J].Progress in Geophysics(in Chinese),28(5):2618-2625,doi:10.6038/pg20130542.
    Zhao J Z,Bai Y B,Cao Q,et al.2012.Quasi-continuous hydrocarbon accumulation,a new pattern for large tight sand oilfields in the Ordos basin[J].Oil&Gas Geology(in Chinese),33(6):811-827.
    Zhao J Z,Li J,Cao Q,et al.2013.Hydrocarbon accumulation patterns of large tight oil and gas fields[J].Oil&Gas Geology(in Chinese),34(5):573-583.
    Zou C N,Zhang G S,Yang Z,et al.2013.Geological concepts,characteristics,resource potential and key techniques of unconventional hydrocarbon:on unconventional petroleum geology[J].Petroleum Exploration and Development(in Chinese),40(4):385-399,454.
    Zou C N,Yang Z,Zhang G S,et al.2014.Conventional and unconventional petroleum"orderly accumulation":Concept and practical significance[J].Petroleum Exploration and Development(in Chinese),41(1):14-27.
    曹鉴华,邱智海,郭得海,等.2013.叠后地震数据的谱反演处理技术及其应用浅析[J].地球物理学进展,28(1):387-393,doi:10.6038/pg20130143.
    冯志强,刘嘉麒,王璞珺,等.2011.油气勘探新领域:火山岩油气藏——松辽盆地大型火山岩气田发现的启示[J].地球物理学报,54(2):269-279,doi:10.3969/j.issn.0001-5733.2011.02.001.
    龚洪林,王振卿,李录明,等.2008.应用地震分频技术预测碳酸盐岩储层[J].地球物理学进展,23(1):129-135.
    巩建强.2009.正演模拟法在油气勘探中的应用[J].油气地球物理,7(2):13-17.
    黄捍东,纪永祯,张骋,等.2013.地震流体识别方法在四川盆地页岩气“甜点”预测中的应用[J].古地理学报,15(5):672-678.
    贾承造,邹才能,李建忠,等.2012.中国致密油评价标准、主要类型、基本特征及资源前景[J].石油学报,33(3):343-350.
    凌云研究小组.2003.应用振幅的调谐作用探测地层厚度小于1/4波长地质目标[J].石油地球物理勘探,38(3):268-274.
    林森虎,邹才能,袁选俊,等.2011.美国致密油开发现状及启示[J].岩性油气藏,23(4):25-30.
    刘爱群,陈殿远,任科英.2013.分频与波形聚类分析技术在莺歌海盆地中深层气田区的应用[J].地球物理学进展,28(1):338-344,doi:10.6038/pg20130137.
    刘光鼎.2011.祝大庆油气田再铸辉煌[J].地球物理学报,54(2):267-268.
    刘曾勤,王英民,白广臣,等.2010.甜点及其融合属性在深水储层研究中的应用[J].石油地球物理勘探,45(1):158-162.
    陆基孟,王永刚.2009.地震勘探原理(第三版)[M].东营:中国石油大学出版社.
    孙伟家,符力耘,管西竹,等,2013.页岩气地震勘探中页岩各向异性的地震模拟研究[J].地球物理学报,56(3):961-970,doi:10.6038/cjg20130324.
    唐晓音,胡圣标,张功成,等,2014.南海北部大陆边缘盆地地热特征与油气富集[J].地球物理学报,57(2):572-585,doi:10.6038/cjg20140221.
    杨升宇,张金川,黄卫东,等.2013.吐哈盆地柯柯亚地区致密砂岩气储层“甜点”类型及成因[J].石油学报,34(2):272-282.
    尹伟,郑和荣,胡宗全,等.2012.鄂南地区中生界油气成藏体系划分与富集区预测[J].石油与天然气地质,33(4):591-598.
    张春贺,乔德武,李世臻,等.2011.复杂地区油气地球物理勘探技术集成[J].地球物理学报,54(2):374-387,doi:10.3969/j.issn.0001-5733.2011.02.014.
    张金川,金之钧,庞雄奇.2000.深盆气成藏条件及其内部特征[J].石油实验地质,22(3):210-214.
    张帅,祝有海,刘豪,等.2013.地震波形分类技术在浅水湖盆砂体预测中的应用[J].地球物理学进展,28(5):2618-2625,doi:10.6038/pg20130542.
    赵靖舟,白玉彬,曹青,等.2012.鄂尔多斯盆地准连续型低渗透-致密砂岩大油田成藏模式[J].石油与天然气地质,33(6):811-827.
    赵靖舟,李军,曹青,等.2013.论致密大油气田成藏模式[J].石油与天然气地质,34(5):573-583.
    邹才能,张国生,杨智,等.2013.非常规油气概念、特征、潜力及技术——兼论非常规油气地质学[J].石油勘探与开发,40(4):385-399,454.
    邹才能,杨智,张国生,等.2014.常规-非常规油气“有序聚集”理论认识及实践及意义[J].石油勘探与开发,41(1):14-27.

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