大庆油田葡南地区葡萄花油层薄层砂岩储层预测
|
摘要
大庆油田葡南地区葡萄花油层的总厚度薄(10～30 m),单砂层具有薄、多、散、杂等特点,砂体厚度横向变化快,用常规的预测方法难以对单个砂体进行准确的描述。为此,在该区开展了基于模型的高分辨率薄互层反演技术进行砂体描述和储层预测的研究。根据葡南地区葡萄花油层的地质特点,选取了Jason多井约束反演技术;通过提高地震采样密度、测井曲线的标准化和精确层位标定等提高了地震资料的综合分辨率,降低了反演多解性;建立了接近实际地质条件的初始波阻抗模型,应用Jason反演方法获得了最终的波阻抗剖面,薄砂层得到了很好的反映,砂体减薄、尖灭等现象清晰,砂体展布特征清楚。利用波阻抗数据体进行了砂岩厚度和有效砂岩厚度预测,预测结果与钻井结果吻合较好。
In Punan area of Daqing oilfield, the total thickness of Putao-hua oil layers is 10~30 m and the individual sand bodies are thin, dispersed, mixed, and transversally variable. Conventional methods can not predict individual sand body precisely. Therefore, the application of high-resolution thin-interbed inversion based on the model in sand body description and reservoir prediction has been studied. Jason inversion method was selected according to the geological features in Putaohua oil layers. By increasing the seismic sampling density, and adopting the log standardization and precise strata calibration, the general resolution of seismic data was increased while the ambiguity of inversion decreased. The initial wave impedance model similar to the real geology condition was established and the final impedance profiles were obtained through Jason inversion. In impedance profiles, thin sand layers are well reflected from the phenomenon of sand bodies becoming thinning and picking out is quite clear, and the distribution of sand bodies is very obvious. The impedance data volume was used to predict the sand thickness and the effective sand thickness, showing a good accordance with the drilling results.
In Punan area of Daqing oilfield, the total thickness of Putao-hua oil layers is 10~30 m and the individual sand bodies are thin, dispersed, mixed, and transversally variable. Conventional methods can not predict individual sand body precisely. Therefore, the application of high-resolution thin-interbed inversion based on the model in sand body description and reservoir prediction has been studied. Jason inversion method was selected according to the geological features in Putaohua oil layers. By increasing the seismic sampling density, and adopting the log standardization and precise strata calibration, the general resolution of seismic data was increased while the ambiguity of inversion decreased. The initial wave impedance model similar to the real geology condition was established and the final impedance profiles were obtained through Jason inversion. In impedance profiles, thin sand layers are well reflected from the phenomenon of sand bodies becoming thinning and picking out is quite clear, and the distribution of sand bodies is very obvious. The impedance data volume was used to predict the sand thickness and the effective sand thickness, showing a good accordance with the drilling results.
引文
1陈守田,孟宪禄．薄互层储层预测方法[J]．石油物探, 2004,43(1):33～36
2梁海龙,姜岩,齐春艳．分层解释性反演技术在薄互层砂体预测中的应用[J]．石油物探,2004,43(4):410～414
3黄伟传,吴恒志．李子峰等．东营凹陷辛154井区三维地震资料多井约束反演及储层预测[J]．石油物探．2004,43(5):466～470
4秦伟军,张永华,全书进．精细构造解释与储层预测技术在泌阳凹陷中南部地区二次勘探中的应用[J]．石油物探,2004,43(1):62～66
5李玉民．波阻抗多井约束反演[J]．石油物探,1994,33 (1):37～44
6闫奎邦,李冬梅,吴小泉等．Jason反演技术在岩性圈闭识别中的应用[J]．石油物探,2004,43(1):54～57
7郝银全,潘懋,李忠权．Jason多井约束反演技术在油气储层预测中的应用[J]．成都理工大学学报(自然科学版),2004,31(3):297～300
8薄永德,贺向阳．苏北盆地高邮凹陷邵伯西地区戴南组隐蔽油藏研究[J]．石油物探．2004,43(2):159～162
9王西文．精细储层预测技术在油田开发中的应用[J]．石油地球物理勘探,2005,40(2):209～218
10季玉新,陈娟,谢雄举．测井曲线精细处理解释技术在复杂储层预测中的应用[J]．石油物探,2004,43(2): 139～144
11陈刚花,王永刚．水基泥浆的侵入对声波测井曲线的影响及校正[J]．石油物探,2005,44(6):609～611
12兰素清,陆明华．多种地球物理方法组合在储层预测中的应用[J]．勘探地球物理进展,2002,25(6): 43～46
2梁海龙,姜岩,齐春艳．分层解释性反演技术在薄互层砂体预测中的应用[J]．石油物探,2004,43(4):410～414
3黄伟传,吴恒志．李子峰等．东营凹陷辛154井区三维地震资料多井约束反演及储层预测[J]．石油物探．2004,43(5):466～470
4秦伟军,张永华,全书进．精细构造解释与储层预测技术在泌阳凹陷中南部地区二次勘探中的应用[J]．石油物探,2004,43(1):62～66
5李玉民．波阻抗多井约束反演[J]．石油物探,1994,33 (1):37～44
6闫奎邦,李冬梅,吴小泉等．Jason反演技术在岩性圈闭识别中的应用[J]．石油物探,2004,43(1):54～57
7郝银全,潘懋,李忠权．Jason多井约束反演技术在油气储层预测中的应用[J]．成都理工大学学报(自然科学版),2004,31(3):297～300
8薄永德,贺向阳．苏北盆地高邮凹陷邵伯西地区戴南组隐蔽油藏研究[J]．石油物探．2004,43(2):159～162
9王西文．精细储层预测技术在油田开发中的应用[J]．石油地球物理勘探,2005,40(2):209～218
10季玉新,陈娟,谢雄举．测井曲线精细处理解释技术在复杂储层预测中的应用[J]．石油物探,2004,43(2): 139～144
11陈刚花,王永刚．水基泥浆的侵入对声波测井曲线的影响及校正[J]．石油物探,2005,44(6):609～611
12兰素清,陆明华．多种地球物理方法组合在储层预测中的应用[J]．勘探地球物理进展,2002,25(6): 43～46
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心