Characterization reservoir heterogeneity through integrating multiwell information using 2D/3D semi-analytical flow model

可靠的储层非均质性表征对储量开发过程具有直接影响，并且是油田储层工程师的期望。本研究试图利用待开发的二维/三维半解析流动模型，通过综合多口威尔斯井的静态/动态信息来表征储层非均质性。本研究的最终产品具有多种现场应用。传统的理想化假设，如均质和各向同性的储层属性，均匀的大规模断层，地层结构等，是合理的，在简单的解决方案和实时现场应用。但这样做也妨碍了我们进一步了解储层特征。将根据质量守恒和达西定律的应用，开发拟议的2D/3D半分析流动模型;将使用水库各部分的源和汇函数法求解推导出的微分方程。 综合多口井的静态和动态响应信息，更好地描述储层非均质性。该方法可应用于地质研究、地质统计学制图、试井和测井资料的综合。本研究尝试应用二维/三维半解析模型来综合多口威尔斯井的静态/动态信息，从而体现试井的价值，并为地质/地质统计模型与流动模型的耦合提供了一种精确的方法。它将为加拿大的储层描述提供一个新的视角和强有力的工具。这一基础研究很可能会促进进一步的联合工业项目（JIP）。

A trustworthy reservoir heterogeneity characterization has a direct impact on the reserve development process and is the desire of field reservoir engineers. This research tries to characterize the reservoir heterogeneity through integrating static/dynamic information of multiple wells using 2D/3D semi-analytical flow models to be developed. The end products of this research have manifold field applications. Traditional idealized assumptions such as homogeneous and isotropic reservoir properties, uniform large scale fault, and formation structure, etc. are reasonable in terms of the simplicity of the solution and the real-time field application. But doing so also prevents us from further understanding the reservoir characteristics. The proposed 2D/3D semi-analytical flow models will be developed based on the application of mass conservation and Darcy's law; the derived differential equation will be solved using the source and sink function method for each part of the reservoir.  Then static and dynamic information of multiple well responses will be integrated to accomplish a better reservoir heterogeneity characterization. It is expected that this methodology can be applied to integrate information from geology study, Geostatistics mapping, well testing and well logging. This research tries to apply the 2D/3D semi-analytical models to integrate static/dynamic information of multiple wells; thus honors the value of well testing and offers an accurate way to couple geological/geostatistical models with flow models. It will provide a new perspective and a powerful tool to conduct reservoir characterization in Canada. It is likely that this fundamental research will promote further Joint Industry Project (JIP).