地震反演与地质建模技术联合储层预测方法
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摘要
受地震资料和数学方法的限制,常规地震储层反演技术在实际应用中有诸多不足,因此提出了一套综合运用地震反演和地质建模技术的储层预测方法。首先采用稀疏脉冲反演计算相对波阻抗模型,进而用波阻抗反演体约束进行自然伽马建模以提高储层分辨能力,最后在自然伽马模型约束下建立高精度的油藏模型。实际应用结果表明,该方法在保持地震反演横向分辨能力的前提下,提高了其对储层的纵向分辨能力,压制了地震反演的多解性,最终获得的油藏模型为研究成藏规律和油藏特征提供了直接和可靠的基础。
Limited by seismic data and mathematical methods,many deficiencies were founded in the application of conventional seismic reservoir inversion.Therefore,a reservoir prediction method was proposed by combining seismic inversion technology and geological simulation.Firstly,wave impedance model was calculated by sparse spike inversion.Secondly,the resolution of reservoir was improved by applying natural gamma modeling under constraint of wave impedance model.Finally,the high accurate oil reservoir model was established with the constraint of natural gamma model.Practical application shows that this method improves the vertical resolution of reservoir and suppressed multiple solution of seismic inversion under premise of keeping horizontal resolution of seismic inversion.The final oil reservoir model provides direct and reliable basis for studying the rules of oil reservoir formation and reservoir characteristics.
Limited by seismic data and mathematical methods,many deficiencies were founded in the application of conventional seismic reservoir inversion.Therefore,a reservoir prediction method was proposed by combining seismic inversion technology and geological simulation.Firstly,wave impedance model was calculated by sparse spike inversion.Secondly,the resolution of reservoir was improved by applying natural gamma modeling under constraint of wave impedance model.Finally,the high accurate oil reservoir model was established with the constraint of natural gamma model.Practical application shows that this method improves the vertical resolution of reservoir and suppressed multiple solution of seismic inversion under premise of keeping horizontal resolution of seismic inversion.The final oil reservoir model provides direct and reliable basis for studying the rules of oil reservoir formation and reservoir characteristics.
引文
[1]曹丹平,印兴耀,张繁昌.井间地震约束下的高分辨率波阻抗反演方法研究[J].石油物探,2010,49(5):425～429.
[2]崔成军,龚姚进,申大媛.波阻抗反演在储层预测研究中的应用[J].地球物理学进展,2010,25(1):9～15.
[3]张勇刚.地震波阻抗反演技术的现状与发展[J].石油物探,2002,41(4):385～390.
[4]郭伟,代宗仰,尹宏,等.叠后波阻抗约束反演的若干问题[J].断块油气田,2006,13(6):16～17.
[5]陈恭洋,胡勇,周艳丽,等.地震波阻抗约束下的储层地质建模方法与实践[J].地学前缘,2012,19(2):67～73.
[6]方小宇,姜平,欧振能,等.融合地质建模与地震反演技术提高储层预测精度的新方法及其应用——以涠洲11-1N油田为例[J].中国海上油气,2012,24(2):23～26.
[7]胡勇,陈恭洋,周艳丽.地震反演资料在相控储层建模中的应用[J].油气地球物理,2011,9(2):41～43.
[8]吴海波,吴和勇,张阳,等.地震波阻抗反演方法之改进与三阶段、九步骤反演方法的初步实践[J].现代地质,2009,23(5):928～932.
[2]崔成军,龚姚进,申大媛.波阻抗反演在储层预测研究中的应用[J].地球物理学进展,2010,25(1):9～15.
[3]张勇刚.地震波阻抗反演技术的现状与发展[J].石油物探,2002,41(4):385～390.
[4]郭伟,代宗仰,尹宏,等.叠后波阻抗约束反演的若干问题[J].断块油气田,2006,13(6):16～17.
[5]陈恭洋,胡勇,周艳丽,等.地震波阻抗约束下的储层地质建模方法与实践[J].地学前缘,2012,19(2):67～73.
[6]方小宇,姜平,欧振能,等.融合地质建模与地震反演技术提高储层预测精度的新方法及其应用——以涠洲11-1N油田为例[J].中国海上油气,2012,24(2):23～26.
[7]胡勇,陈恭洋,周艳丽.地震反演资料在相控储层建模中的应用[J].油气地球物理,2011,9(2):41～43.
[8]吴海波,吴和勇,张阳,等.地震波阻抗反演方法之改进与三阶段、九步骤反演方法的初步实践[J].现代地质,2009,23(5):928～932.
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