大规模角点网格计算机辅助油藏模拟历史拟合方法研究

开展了大规模角点网格地质建模和油藏数值模拟应用研究,并研制了角点网格完井射孔层位辅助软件工具,解决了地质模型和数值模拟模型之间的衔接问题。提出了一种计算机辅助历史拟合方法,该方法采用油藏数值模拟自动历史拟合的数学模型。利用油藏数值模拟的成熟技术和专家知识,研制了历史拟合影响因素分析和计算机辅助优化拟合软件,根据主控因素,分3个层次,将历史拟合由初步拟合到精细拟合,提高了高含水油田剩余油分布预测数值模拟研究的可靠性和计算效率。该方法应用于苏丹Greater Unity油田的开发调整,取得了很好的效果。

Study on computer assisted history-matching method in corner point grids

A computer-assisted history-matching method for geologic modeling and numerical simulation of oil reservoir was studied.The module software for perforated zone of completed wells in corner point grids was developed.The module integrates the data of well completion and oil production and tested information into the simulation models in corner point grids.The software for affecting factor analysis and computer-assisted history-matching was developed by reservoir numerical simulation technology and special knowledge.According to the main control factors,the history matching process was derived from three steps to enhance the study reliability of numerical simulation in predicting distribution of remaining oil in high water-cut oilfield.The reliable distribution of remaining oil was obtained when the module was used in the simulation study of Greater Unity Oilfield in Sudan.The adjusted development strategy based on well pattern and water injection manner was recommended.