随机地震反演在PG气田的应用
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摘要
普光气田属于低孔、低渗、非均质性比较强的裂缝——孔隙型碳酸盐岩油气藏,其具有溶蚀孔洞发育、局部裂缝发育、储层孔隙结构比较复杂的特点。储层孔隙结构复杂导致了储层分类难度大、精度低等难题,常规波阻抗反演的方法已不能满足实际生产开发需要。而随机地震反演充分考虑地质规律、地震和测井资料,具有比较高的描述能力和分辨能力,能够为储层描述提供更加丰富可靠的信息。在普光气田应用结果表明该方法有效地压制了地震反演的多解性,预测结果良好。
Puguang gas field is belong to fractured-porous carbonate gas reservoir with low porosity,low permeability and strong heterogeneity,it has the characteristics of the solution cave development and the local fractures development with more complex reservoir structure. The complex pore structures of the reservoir have resulted in many problems on the reservoir classification which is difficult and low accuracy. The conventional wave impedance inversion technique can't meet the requirement of practical production. But the stochastic seismic inversion can provide more reliable information for reservoir description,which has take full account of geological law and the seismic and logging data,it gets higher description and distinguish ability. Results of the application in Pugang gas field show that the method is effective to suppress the uncertainty of seismic inversion,the prediction is good.
Puguang gas field is belong to fractured-porous carbonate gas reservoir with low porosity,low permeability and strong heterogeneity,it has the characteristics of the solution cave development and the local fractures development with more complex reservoir structure. The complex pore structures of the reservoir have resulted in many problems on the reservoir classification which is difficult and low accuracy. The conventional wave impedance inversion technique can't meet the requirement of practical production. But the stochastic seismic inversion can provide more reliable information for reservoir description,which has take full account of geological law and the seismic and logging data,it gets higher description and distinguish ability. Results of the application in Pugang gas field show that the method is effective to suppress the uncertainty of seismic inversion,the prediction is good.
引文
[1]邹新宁.鄂尔多斯盆地苏里格气田河道砂体识别研究[D].西安:西北大学,2006.
[2]徐明华,王绪本,等.自然伽马反演在双家坝构造飞仙关组鲕滩储层预测中的应用[J].石油物探,2003(3):14.
[3]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.
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[6]李力,孙耀庭,陈建.普光气田飞仙关组合长兴组测井解释方法[J].断块油气田,2011,18(4):508-510.
[7]靳秀菊,姜贻伟,刘志远,等.礁滩相碳酸盐岩气藏气层下限标准研究[J].断块油气田,2010,17(5):571-574.
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[2]徐明华,王绪本,等.自然伽马反演在双家坝构造飞仙关组鲕滩储层预测中的应用[J].石油物探,2003(3):14.
[3]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.
[4]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,41(4).
[5]Jian F X;Larue D K;Castellini A;To Idi J.Reservoir Modeling Methods And Characterization Parameters For A Shoreface Reservoir:What Is Important For Fluid Flow Performancc?[J].Chevrontexaco E&P Technol.Annu SPE Tech Conf(San Antomio,TX,9/29/2002--10/2/2002)14PP;16Refs).
[6]李力,孙耀庭,陈建.普光气田飞仙关组合长兴组测井解释方法[J].断块油气田,2011,18(4):508-510.
[7]靳秀菊,姜贻伟,刘志远,等.礁滩相碳酸盐岩气藏气层下限标准研究[J].断块油气田,2010,17(5):571-574.
[8]韩艺美,张立强,等.普光地区碳酸岩储层特征研究[D].北京:中国石油大学.
[9]马永生,蔡勋育,李国雄.四川盆地普光大型气藏基本特征及成藏富集规律[J].地质学报,2005,79(6):858-865.
[10]徐明华,朱心万,费怀义,张世荣,蒙杉.苏里格气田储层地震反演预测技术探讨[J].天然气工业,2007,9.
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