三维地质模型构建与更新在Peregrino油田的应用

摘要

位于巴西坎普斯盆地的Peregrino油田为一大型构造岩性重油油藏，如何构建符合油田地质特点的地质模型以应用于井位部署和方案优化存在较大挑战。本文系统总结了Peregrino油田地质模型构建与更新方面的主要技术与应用情况，主要包括：基于地质特点的三维网络构建，基于储层物性特点的储层分类，波阻抗体三维约束下的岩相建模，岩相控制下的物性参数体创建，分相J函数方法建立饱和度模型，多参数不确定性分析技术，以及基于Petrel软件的工作流编制实现模型快速更新等。油藏数值模拟与新井结果表明建立的地质模型比较符合油田的实际情况，可以较好地应用于井位部署与方案优化研究。所采用的方法对于类似油田的地质建模与更新具有很好的借鉴意义。%Peregrino oilfield is located offshore in the Campos Basin with heavy oil characteristics. Since with com-plex structure and strong heterogeneous reservoir,it is very challenging in how to build a proper geological model for well placement and field development plan optimization. This paper gives an overview of the methodology implemen-ted in geological model building and refreshing in order to deal with these challenges,such as building geological model grid based on geological concept,reservoir facies classification by petrophysical characters,rock facies model-ing controlled by 3D impedance cube,rock property modeling by different facies,water saturation modeling by J function,uncertainty analysis for multi-parameters,and workflow compiling and implement druing model updating based on Petrel software. History match and new wells results have proved that geological models built could proper-ly describe Carapebus reservoir characteristic,the methodology used will be helpful for the similar oilfield geological model construction and updating.