陆相盆地破碎断块区储层预测方法研究
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摘要
陆相盆地破碎断块区具有砂体单层厚度薄、横向连续性差、地震反射紊乱等特征,采用常规的储层预测方法很难得到好的预测效果。针对这一问题,进行了储层预测综合方法研究:①采用高分辨率层序地层分析方法和相干体技术建立高精度地层约束模型;②采用地质约束的测井归一化处理、多道记录自相关统计、精确的井震标定等手段建立精确的测井约束模型;③利用沉积相约束反演过程,地质因素约束储层解释过程,使预测结果更符合地质规律。利用以上方法在东濮凹陷某三维地震工区进行了储层预测,预测的砂体分布趋势与沉积微相的解释结果相关程度较高,符合该区的地质规律。
In broken fault-block area of land facies basin, single sandstone usually has thin thickness and poor lateral continuity, the formation has unsystematic seismic reflection characteristic. It is difficult to obtain perfect predication results using normal inversion method. In view of the problem, a comprehensive reservoir method is studied: high resolution sequence stratigraphy method and seismic coherence analysis technique are used to create high degree strata model in seismic inversion process in order to raise reservoirs prediction accuracy; Multichannel record autocorrelation statistics, accurate well-seismic calibrate means and log data normalization with geology conditions restricting are applied to enhance log model reliability; Sedimentary facies analysis results are considered as constraint conditions in log constrained inversion to enhance reservoir prediction validity after multipled contrast and certification between sedimentary facies and inversion results. By using this method, it was revealed that the sandbodies distribution trend and sedimentary microfacies analysis results have high cor-relativity in Dongpu depression.
In broken fault-block area of land facies basin, single sandstone usually has thin thickness and poor lateral continuity, the formation has unsystematic seismic reflection characteristic. It is difficult to obtain perfect predication results using normal inversion method. In view of the problem, a comprehensive reservoir method is studied: high resolution sequence stratigraphy method and seismic coherence analysis technique are used to create high degree strata model in seismic inversion process in order to raise reservoirs prediction accuracy; Multichannel record autocorrelation statistics, accurate well-seismic calibrate means and log data normalization with geology conditions restricting are applied to enhance log model reliability; Sedimentary facies analysis results are considered as constraint conditions in log constrained inversion to enhance reservoir prediction validity after multipled contrast and certification between sedimentary facies and inversion results. By using this method, it was revealed that the sandbodies distribution trend and sedimentary microfacies analysis results have high cor-relativity in Dongpu depression.
引文
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9季玉新,陈娟,谢熊举．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
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11董伟,冯方．预测井间储集层参数的相控模型法[J]．石油勘探与开发,2003,30(1):68-70
2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
3雷雪,李忠,巫芙蓉等．高分辨率层序地层学在川西地震资料反演中的应用[J]．石油物探,2003,42(4):493-500
4王西文,苏明军,王大兴．相控等时小层对比方法及应用[J]．石油勘探与开发,2003,30(6):78-80
5 Bahorich M S, Fanner S L. 3-D seismic discontinuity for and stratigraphic feature: The coherence cube[J]. The Leading Edge, 1995, 14(10): 1053-1058
6赵殿东,宋玉龙,马国光等．油气地球物理探勘技术[M]．山东东营:石油大学出版社,2002．130-133
7于建国,路慎强,王金铎等．测井约束反演技术在史南浊积砂体描述中的应用[J]．石油物探,2001,40(2): 103-107
8刘百红,李建华．测井和地震资料宽带约束反演的应用[J]．石油物探,2004,43(1):76-79
9季玉新,陈娟,谢熊举．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
10赵政璋,赵贤正,王英民．储层地震预测理论与实践[M]．北京:科学出版社,2005．27-28
11董伟,冯方．预测井间储集层参数的相控模型法[J]．石油勘探与开发,2003,30(1):68-70
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