秦皇岛32-6油田明化镇组河流相储层地球物理参数影响因素研究
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摘要
秦皇岛32-6油田明化镇组储层为河流相沉积,单砂体规模小,砂体间接触关系复杂,受到地震分辨率限制,对叠置砂体储层地震响应规律认识不明确,导致基于地震信息的储层砂体解释错误.通过数值正演模拟,可以正确认识砂体储层的地震响应规律,提高砂体储层预测的准确率.所以,在进行地震响应正演模拟前,非常有必要对该区储层地球物理参数影响因素展开研究,通过分析研究区14口测井资料,建立了岩石物理参数(孔隙度、泥质含量、含流体性)与地球物理参数(速度、密度、波阻抗等)之间的相关关系,分析了不同沉积微相对地球物理参数的控制作用,并给出了相应的数学表达式,为正确认识河流相储层砂体地震响应规律奠定了准确的地球物理参数基础.
In QHD32-6 oilfield,the main reservoir is fluvial facies at Nm Formation.The scale of single sandstone is limited,but the combined structural sandstone is so complicated,that we could not interpret hydrocarbon reservoir correctly,because,subject to seismic vertical resolution,the relations between seismic response and combined structural sandstone is undefined.In order to effectively improve the interpretation accuracy,we should define the seismic response of sandstones precisely by using digital seismic forward modeling.So it is very necessary to analysis the influence factors of reservoir geophysical parameters before seismic forward modeling.In this paper,through researching 14 well data,we will establish the relationship between geophysical parameters(P-wave velocity、density、P-wave impedance) and physical property parameters(porosity、VSH、saturation),and analyze the influence of different sedimentary microfacies in this area,then relevant expressions are given out for defining seismic response of fluvial facies combined structural sandstone precisely.
In QHD32-6 oilfield,the main reservoir is fluvial facies at Nm Formation.The scale of single sandstone is limited,but the combined structural sandstone is so complicated,that we could not interpret hydrocarbon reservoir correctly,because,subject to seismic vertical resolution,the relations between seismic response and combined structural sandstone is undefined.In order to effectively improve the interpretation accuracy,we should define the seismic response of sandstones precisely by using digital seismic forward modeling.So it is very necessary to analysis the influence factors of reservoir geophysical parameters before seismic forward modeling.In this paper,through researching 14 well data,we will establish the relationship between geophysical parameters(P-wave velocity、density、P-wave impedance) and physical property parameters(porosity、VSH、saturation),and analyze the influence of different sedimentary microfacies in this area,then relevant expressions are given out for defining seismic response of fluvial facies combined structural sandstone precisely.
引文
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[12]高静怀,陈文超,李幼铭等.广义S变换与薄互层地震响应分析.地球物理学报,2003,46(4):526-532.Gao J H,Chen W C,Li Y M,et al.Generalized S trans formand seismic response analysis of thin interbeds.Chinese J.Geophys.(in Chinese),2003,46(4):526-532.
[13]陈继松,常旭.储油薄层的地震响应及定量解释.石油地球物理勘探,1987,22(4):386-399.Chen J S,Chang X.The seismic response of thin reservoir andits quantitative in terpretation.OGP(in Chinese),1987,22(4):386-399.
[14]冯子辉,朱映康,张元高等.松辽盆地营城组火山机构-岩相带的地震响应.地球物理学报,2011,54(2):556-562.Feng Z H,Zhu Y K,Zhang Y G,et al.The seismic responseof the volcanic edifice-facies zone of Yingcheng form ationinthe Songliao Basin.Chinese J.Geophys.(in Chinese),2011,54(2):556-562.
[15]吴晓智,李建忠,杨迪生等.准噶尔盆地陆东—五彩湾地区石炭系火山岩电性与地震响应特征.地球物理学报,2011,54(2):481-490.Wu X Z,Li J Z,Yang D S,et al.The electric characteristicsand seismic response of Carboniferous volcanic rock inLudong-Wucaiwan area of Junngar basin.Chinese J.Geophys.(in Chinese),2011,54(2):481-490.
[2]范廷恩,李维新,王志红等.渤海渤中34区河流相储层预测与描述技术研究.中国海上油气,2006,18(1):13-16.Fan T N,Li W X,Wang X H,et al.A research of predictionand description techniques for fluvial reservoir in Bozhong 34area,Bohai sea.China Offshore Oil and Gas(in Chinese),2006,18(1):13-16.
[3]赵春明,胡景双,霍春亮等.曲流河与辫状河沉积砂体连通模式及开发特征--以渤海地区秦皇岛32-6油田为例.油气地质与采收率,2009,16(6):88-91.Zhao C N,Hu J S,Huo C L,et al.Sandbodyinterconnectivity architecture and development characteristicsof meandering river and braided river deposits-a case study ofQinhuangdao 32-6 Oilfield,Bohai area.Petroleum Geologyand Recovery Efficiency(in Chinese),2009,16(6):88-91.
[4]邓运华,李建平.浅层油气藏的形成机理.北京:石油工业出版社,2008.Deng Y H,Li J P.Shallow Reservoir Formation Mechanism(in Chinese).Beijing:Petroleum Industry Press,2008.
[5]李健,刘特阶,戴民等.辽河油田薄层砂体的预测与追踪.地球物理学进展,2010,25(1):56-62.Li J,Liu T J,Dai M,et al.Predicting and tracing of the thinsand bodies in the Liaohe oilfield.Progress in Geophysics(inChinese),2010,25(1):56-62.
[6]马丽娟,郑和荣,陈霞.隐蔽油气藏地震预测技术研究新进展.地球物理学进展,2007,22(1):294-300.Ma L J,Zheng H R,Chen X.The new progress of seismicforecast technology of subtle traps.Progress in Geophysics(inChinese),2007,22(1):294-300.
[7]杨凯.东营凹陷王庄—宁海地区馆陶组储层预测.地球物理学进展,2005,20(1):54-57.Yang K.The reservoir predication for Guantao set ofDongying sunken,Shengli oil-field.Progress in Geophysics(inChinese),2005,20(1):54-57.
[8]柏冠军,吴汉宁,赵希刚等.地震资料预测薄层厚度方法研究与应用.地球物理学进展,2006,21(2):554-558.Bai G J,Wu H N,Zhao X G,et al.Research on prediction ofthin bed thickness using seismic data and its application.Progress in Geophysics(in Chinese),2006,21(2):554-558.
[9]范军侠,梁锋,田永.海南地区东三段水下分流河道砂体的识别与预测.地球物理学进展,2007,22(5):1527-1532.Fan J X,Liang F,Tian Y.Recognition and prediction ofsubchannel branch sandbodies inthethirdmemberoftheDongyingformation,Hainanarea.ProgressinGeophysics(inChinese),2007,22(5):1527-1532.
[10]刘卫华,高建虎,陈启艳等.测井资料岩石物理分析在苏西地区储层预测研究中的应用.地球物理学进展,2010,25(3):939-945.Liu W,Gao J H,Chen Q Y,et al.Application of rock physicsparameters analysis with logs data to reservoir prediction inthe SX area.Progress in Geophysics(in Chinese),2010,25(3):939-945.
[11]刘金连,张建宁.济阳探区单一河道砂体边界地质建模及其地震正演响应特征分析.石油物探,2010,49(4):344-350.Liu J L,Zhang J N.Geological modeling and seismic forwardresponse characteristics analysis of single channel sand bodyboundary in Jiyang prospecting area.GPP(in Chinese),2010,49(4):344-350.
[12]高静怀,陈文超,李幼铭等.广义S变换与薄互层地震响应分析.地球物理学报,2003,46(4):526-532.Gao J H,Chen W C,Li Y M,et al.Generalized S trans formand seismic response analysis of thin interbeds.Chinese J.Geophys.(in Chinese),2003,46(4):526-532.
[13]陈继松,常旭.储油薄层的地震响应及定量解释.石油地球物理勘探,1987,22(4):386-399.Chen J S,Chang X.The seismic response of thin reservoir andits quantitative in terpretation.OGP(in Chinese),1987,22(4):386-399.
[14]冯子辉,朱映康,张元高等.松辽盆地营城组火山机构-岩相带的地震响应.地球物理学报,2011,54(2):556-562.Feng Z H,Zhu Y K,Zhang Y G,et al.The seismic responseof the volcanic edifice-facies zone of Yingcheng form ationinthe Songliao Basin.Chinese J.Geophys.(in Chinese),2011,54(2):556-562.
[15]吴晓智,李建忠,杨迪生等.准噶尔盆地陆东—五彩湾地区石炭系火山岩电性与地震响应特征.地球物理学报,2011,54(2):481-490.Wu X Z,Li J Z,Yang D S,et al.The electric characteristicsand seismic response of Carboniferous volcanic rock inLudong-Wucaiwan area of Junngar basin.Chinese J.Geophys.(in Chinese),2011,54(2):481-490.
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