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首页> 外文会议>SPE Russian Petroleum Technology Conference and Exhibition >4D Geomechnical Model Creation for Estimation of Field Development Effect on Hydraulic Fracture Geometry
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4D Geomechnical Model Creation for Estimation of Field Development Effect on Hydraulic Fracture Geometry

机译：4D地理学模型创建液压断裂几何析田开发效应估算

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A 3D geomechanical model was constructed to estimate the influence of the initially placed propped fractures and the pressure variation with time in active field development on the stress-state redistribution. The main task of paper was to research the different parameters influence on stress state condition and especially on possibility of stress reorientation due to field development. In addition, the main purpose of the paper is to fiend impact of acting processes on hydraulic fracturing propagation. A finite element method was applied to calculate the stress state in a target sector of the oil field. All available seismic data and pertinent well logging data were used to update the geological and hydrodynamic models, and data from hydraulic fracturing, 1D geomechanical modeling, and drilling history were used for verification of the modeling results. In the following paper the reservoir parameters which can be useful for other fields of West Siberia were used. The 3D geomechanical model was created and used for the stress-state redistribution forecast, taking into account the field development history. The model was built by coupling the geomechanical finite element and compositional numerical reservoir simulator result at two time steps –the initial, virgin state and the current state of the field development. It has been shown that the change in reservoir pressure has a significant influence on the value of the horizontal stress in the area of interest, whereas the change in stress orientation depends on the reservoir height, layout of wells, field development stage, and mechanical properties of the rock. Near the initial fractures, the fractures themselves have a strong influence on the magnitude and orientation of the horizontal stress.
机译：建造了3D地质力学模型来估计最初放置的裂缝和压力变化随时间在应力 - 状态再分布上的初始放置的裂缝和压力变化的影响。纸张的主要任务是研究不同参数对应力状态条件的影响，特别是由于现场开发导致的压力重新定向的可能性。此外，本文的主要目的是对液压压裂繁殖的作用过程的凶手影响。施加有限元方法以计算油田靶扇区中的应力状态。所有可用的地震数据和相关的井测井数据用于更新地质和流体动力学模型，以及来自液压压裂，1D地质力学建模和钻井历史的数据用于验证建模结果。在下文中，使用了对西西伯利亚其他领域的储层参数被使用。创建了3D地质力学模型并用于应力状态的再分配预测，考虑到现场开发历史。该模型是通过耦合地质力学有限元和组成数值储库模拟器的两个时间步骤 - 初始，处女状态和现场开发的当前状态的构建模型。已经表明，储层压力的变化对感兴趣范围内的水平应力的值具有显着影响，而应力取向的变化取决于储层高度，井布置，野外开发阶段和机械性能岩石。在初始骨折附近，裂缝本身对水平应力的幅度和取向具有很大的影响。

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