震控储层建模方法及其在普光气田的应用
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摘要
三维地质建模工作的最终目标是建立尽可能精确的储层参数模型来展示三维空间的地质情况,并为油气藏数值模拟提供地质基础。震控储层建模技术是以地质统计学和变差函数分析等常规数学建模方法为基础,通过将合理的地震参数数据作为约束,实现井间测井数据更合理内插的一种储层建模方法。该技术可以将含有丰富地质、岩性、物性信息的地震数据和测井数据结合在一起,既体现了测井数据的垂向分辨率,又综合了地震数据体反映的储层横向变化特征,特别适用于井网密度不高、储层非均质性强的油气田。为此,基于该方法在普光气田的实际应用效果,结合地震反演数据在储层建模中的应用成果,把地震数据作为宏观约束条件,有效地解决了井网密度不高时储层属性模型的精度问题,并指出了储层建模中整合地震数据方法的若干发展趋势。
The ultimate goal of 3D geologic modeling is to establish as accurately as possible a reservoir parameter model,so as to reveal the geological conditions in three-dimensional space and to lay a geologic base of numerical simulation.Seismic-constrained reservoir modeling is to realize,under the constraint of proper seismic parameters,reasonable inter-well interpolation of log data based on the conventional mathematical modeling methods such as geostatistics and variogram analysis.This technology can integrate log data with seismic data containing rich information on geological,lithologic and physical properties.It can not only take advantage of the high vertical resolution of log data,but incorporate the lateral change of reservoirs reflected by the seismic data.It is especially suitable for use in oil and gas fields with a low well spacing density and high reservoir heterogeneity.In combination with the application of seismic inversion data in reservoir modeling,it is proposed to effectively enhance the accuracy of reservoir property model with a low well spacing density by using seismic data as macroscopic constraints.The trend of incorporating seismic data in reservoir modeling is also presented.
The ultimate goal of 3D geologic modeling is to establish as accurately as possible a reservoir parameter model,so as to reveal the geological conditions in three-dimensional space and to lay a geologic base of numerical simulation.Seismic-constrained reservoir modeling is to realize,under the constraint of proper seismic parameters,reasonable inter-well interpolation of log data based on the conventional mathematical modeling methods such as geostatistics and variogram analysis.This technology can integrate log data with seismic data containing rich information on geological,lithologic and physical properties.It can not only take advantage of the high vertical resolution of log data,but incorporate the lateral change of reservoirs reflected by the seismic data.It is especially suitable for use in oil and gas fields with a low well spacing density and high reservoir heterogeneity.In combination with the application of seismic inversion data in reservoir modeling,it is proposed to effectively enhance the accuracy of reservoir property model with a low well spacing density by using seismic data as macroscopic constraints.The trend of incorporating seismic data in reservoir modeling is also presented.
引文
[1]张旺青,刘阳平,程超,等.储层相控随机建模研究[J].断块油气田,2008,15(5):44-46.
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[3]朱怡翔,张明禄,王根久,等.苏里格气田相控建模及有利储层预测[J].中国石油勘探,2004,9(1):52-58.
[4]潘少伟,杨少春,杨柏,等.相控建模技术在江苏油田庄2断块中的应用[J].天然气地球科学,2009,20(6):935-940.
[5]严申斌,李少华,邓恒.相控储层建模在胜南油田的应用[J].断块油气田,2008,15(1):16-18.
[2]于兴河,李胜利,赵舒,等.河流相油气储层的井震结合相控随机建模约束方法[J].地学前缘,2008,15(4):33-41.
[3]朱怡翔,张明禄,王根久,等.苏里格气田相控建模及有利储层预测[J].中国石油勘探,2004,9(1):52-58.
[4]潘少伟,杨少春,杨柏,等.相控建模技术在江苏油田庄2断块中的应用[J].天然气地球科学,2009,20(6):935-940.
[5]严申斌,李少华,邓恒.相控储层建模在胜南油田的应用[J].断块油气田,2008,15(1):16-18.
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