王55低渗透区块油藏数值模拟研究

发布时间：2018-06-10 02:05

本文选题：王55区块 + 低渗透　；参考：《东北石油大学》2015年硕士论文

【摘要】：我国低渗透油藏储量十分丰富,分布非常广泛,具有重要开采价值。由于渗透能力低,非均质性严重,因此开发较困难。如何高效开发规模巨大的低渗透油藏,一直是石油开发领域的一个重要课题。胜利油田的王55区块为低渗透油藏。区块渗透能力低,非均质性强,地层能量下降很快,开发难度较大。本文以该区块作为研究对象,建立了区块的地质模型和数值模拟模型。本文在归纳了区块的物性,分析了开发历程,研究了区块的地质特征和开发特征的基础上,分析了低渗透油藏的渗流机理,建立了考虑启动压力梯度和应力敏感性的微分方程,用数值方法对问题进行了求解,建立了区块的三维地质模型,精细描述了区块的油水分布、沉积微相、物性参数分布等。结合建立的地质模型,对区块展开数值模拟研究,建立了模拟模型,拟合了地质储量和近20年来的油井开发历史,主要包括产油量、产液量、采出程度等,并对拟合结果进行了评价,建立的模型精度较高,利用模型对设计的调整方案进行预测,其结果可以指导区块的下一步开发。
[Abstract]:Low permeability reservoirs are rich in reserves and widely distributed in China. Because of low permeability and serious heterogeneity, it is difficult to develop. How to efficiently develop large-scale low-permeability reservoirs has always been an important subject in the field of petroleum development. The Wang55 block in Shengli Oilfield is a low permeability reservoir. The block has low permeability, strong heterogeneity, rapid decrease of formation energy and great difficulty in development. In this paper, the geological model and numerical simulation model of the block are established. On the basis of summarizing the physical properties of the block, analyzing the development history, studying the geological and development characteristics of the block, the percolation mechanism of the low permeability reservoir is analyzed, and the differential equation considering the starting pressure gradient and stress sensitivity is established. The numerical method is used to solve the problem, and the 3D geological model of the block is established. The distribution of oil and water, sedimentary microfacies and physical parameters of the block are described in detail. Combined with the established geological model, a numerical simulation study on the block is carried out, and a simulation model is established to fit the geological reserves and the development history of oil wells in the past 20 years, mainly including oil production, liquid production, recovery degree and so on. The fitting results are evaluated and the precision of the established model is high. Using the model to predict the adjustment scheme of the design, the results can guide the further development of the block.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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