泥灰岩裂缝储层预测方法研究——以束鹿凹陷为例
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摘要
泥灰岩裂缝储层由于其各向异性、非均质性的特点,仅靠单一方法很难预测其裂缝发育。文中根据构造应力场理论、地震波频率衰减及裂缝检测理论,运用拟声波反演、构造应力场数字模拟分析、岩石物理模型正演模拟、裂缝各向异性属性分析及衰减属性分析等方法,充分利用现有的地质、钻井、测井资料和叠前、叠后地震数据,对束鹿凹陷泥灰岩裂缝储层开展联合预测,搞清了泥灰岩裂缝发育与地层岩性、应力分布以及构造发育之间的关系,明确了裂缝的走向、密度及有利发育部位,预测了有利储层的分布范围。实际资料应用表明,用该套方法识别构造裂缝方向和密度是有效和可靠的,可以检测出有利的裂缝发育带,为井位部署提供依据。
Due to the anisotropy and heterogeneity of the marl fractured reservoir,it is difficult to predict the fracture accurately with conventional methods.Based on the theories of tectonic stress field,seismic wave frequency attenuation and fracture detection,the pseudo-acoustic inversion,digital simulation analysis of tectonic stress field,forward modeling of rock physical model and anisotropy and attenuation attributes analysis combining with the available data of geology,drilling,well logging and the prestack and poststack seismic data are applied to analyze the marl fractured reservoir in Shulu Sag.The relations among the marl fracture development and stratigraphic lithologies,stress distribution and tectonic development are made clear,and the distribution range of the favorable reservoir was finally predicted.The application result of the real data proves the effectiveness and reliability of this method in the reservoir prediction.
Due to the anisotropy and heterogeneity of the marl fractured reservoir,it is difficult to predict the fracture accurately with conventional methods.Based on the theories of tectonic stress field,seismic wave frequency attenuation and fracture detection,the pseudo-acoustic inversion,digital simulation analysis of tectonic stress field,forward modeling of rock physical model and anisotropy and attenuation attributes analysis combining with the available data of geology,drilling,well logging and the prestack and poststack seismic data are applied to analyze the marl fractured reservoir in Shulu Sag.The relations among the marl fracture development and stratigraphic lithologies,stress distribution and tectonic development are made clear,and the distribution range of the favorable reservoir was finally predicted.The application result of the real data proves the effectiveness and reliability of this method in the reservoir prediction.
引文
[1]郝以岭,高鑫,陈国胜.冀中坳陷束鹿凹陷泥灰岩储层测井解释实践与认识[J].中国石油勘探,2007,12(2):51-57.
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[4]Fryer GJ,Frazer L N.Seismic waves in stratified anisotropic media[J].Geophys,1984,78:697-710.
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[6]Andre,Ruge.Variation of P-wave reflectivity with offset and azimuthin anisotropic media[C].Expanded Abstracts of66th Annual Internat SEG Mtg,1996:1810-1813.
[7]曲寿利,季玉新,王鑫.泥岩裂缝油气藏地震检测方法[M].北京:石油工业出版社,2003.
[8]熊翥.我国物探技术的进步及展望[J].石油地球物理勘探,2004,39(4):488-492.
[9]黄安敏,裴建翔,陈志宏.油气储层预测技术在琼东南盆地BD13区的应用[J].天然气地球科学,2006,17(4):518-522.
[10]陈永波,雍学善,刘化清.沉积体系域控制下的岩性油气藏预测方法研究及应用[J].岩性油气藏,2007,19(2):62-66.
[11]刘洋,李承楚.双相各向异性介质中弹性波传播特征研究[J].地震学报,1999,21(4):38-41.
[2]王延光.储层地震反演方法以及应用中的关键问题与对策[J].石油物探,2002,41(3):299-303.
[3]袁士义,宋新民,冉启全.裂缝性油气藏开发技术[M].北京:石油工业出版社,2004.
[4]Fryer GJ,Frazer L N.Seismic waves in stratified anisotropic media[J].Geophys,1984,78:697-710.
[5]Fryer GJ,Frazer L N.Seismic waves in stratified anisotropic media-II.Elastodynamic eigensolutions for some anisotropic systems[J].Geophys,1987,91:73-101.
[6]Andre,Ruge.Variation of P-wave reflectivity with offset and azimuthin anisotropic media[C].Expanded Abstracts of66th Annual Internat SEG Mtg,1996:1810-1813.
[7]曲寿利,季玉新,王鑫.泥岩裂缝油气藏地震检测方法[M].北京:石油工业出版社,2003.
[8]熊翥.我国物探技术的进步及展望[J].石油地球物理勘探,2004,39(4):488-492.
[9]黄安敏,裴建翔,陈志宏.油气储层预测技术在琼东南盆地BD13区的应用[J].天然气地球科学,2006,17(4):518-522.
[10]陈永波,雍学善,刘化清.沉积体系域控制下的岩性油气藏预测方法研究及应用[J].岩性油气藏,2007,19(2):62-66.
[11]刘洋,李承楚.双相各向异性介质中弹性波传播特征研究[J].地震学报,1999,21(4):38-41.
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