arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.02652cs.LGcs.AIphysics.geo-ph
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基于网格仿真的图神经网络框架

A Graph Neural Network Framework for Grid-Based Simulation

Haoyu Tang, Wennan Long

摘要:

油藏数值模拟在井控和布井优化中计算量大。通常,需要大量的模拟运行(实现)以实现最佳的井位置。在本文中,我们提出了一个图神经网络(GNN)的框架,建立一个代理前馈模型,取代模拟运行,以加快优化过程。我们的GNN框架包括一个编码器,一个进程和一个解码器,它从模拟原始数据设计和生成的处理后的图形数据中获取输入。我们用6000个样本(相当于40个井配置)训练GNN模型,每个样本包含前一步状态变量和下一步状态变量。我们用另外6000个样本对GNN模型进行了测试,经过模型调整后,一步预测和推出预测都与仿真结果非常匹配。我们的GNN框架在与井相关的地下优化(包括石油和天然气以及碳捕获封存(CCS))的应用中显示出巨大的潜力。

英文摘要:

Reservoir simulations are computationally expensive in the well control and well placement optimization. Generally, numerous simulation runs (realizations) are needed in order to achieve the optimal well locations. In this paper, we propose a graph neural network (GNN) framework to build a surrogate feed-forward model which replaces simulation runs to accelerate the optimization process. Our GNN framework includes an encoder, a process, and a decoder which takes input from the processed graph data designed and generated from the simulation raw data. We train the GNN model with 6000 samples (equivalent to 40 well configurations) with each containing the previous step state variable and the next step state variable. We test the GNN model with another 6000 samples and after model tuning, both one-step prediction and rollout prediction achieve a close match with the simulation results. Our GNN framework shows great potential in the application of well-related subsurface optimization including oil and gas as well as carbon capture sequestration (CCS).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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