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| 基于水体-气藏耦合的水侵量及动储量优化计算方法 |
| Optimization Method for Calculating Water Influx and Dynamic Reserve Based on Aquifer-Gas Reservoir Coupling |
| 投稿时间：2026-03-01 修订日期：2026-03-29 |
| DOI： |
| 中文关键词: 水驱气藏 动储量 水侵量 目标函数 优化 |
| 英文关键词: Water drive gas reservoir Dynamic reserve Water influx Objective function Optimization |
| 基金项目:新型油气勘探开发国家科技重大专项“人造气藏开发设计技术研究与应用”(No. 2025ZD1405302) |
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| 中文摘要: |
| 为了解决水驱气藏水侵量及动储量计算关联性强、不确定性大的难题,基于有水气藏物质平衡方程,综合考虑气藏生产动态数据、水体大小、形状、物性参数等因素,对动储量、视压力、水侵量进行多重约束,确立了归一化目标函数,建立了水体-气藏耦合的动储量及水侵量最优化计算方法。研究结果表明：该方法既从渗流角度考虑了水驱气藏不稳定水侵过程,又从数学角度保证了最优动态储量和水侵量产生的误差最小；在动储量的合理取值范围之内进行搜索,可寻找到归一化目标函数最小值,确定出气藏最优的动储量和水侵量,其计算结果合理、可靠。本研究对我国同类气藏准确计算水侵量及动态储量、分析水侵规律及开发调整具有重要的借鉴意义。 |
| 英文摘要: |
| To address the challenges of strong correlation and high uncertainty in calculating water influx and dynamic reserve in water-drive gas reservoir, this paper develops an optimization method for calculating dynamic reserve and water influx with aquifer-gas reservoir coupling model based on the material balance equation for water drive gas reservoir. The method comprehensively considers factors including production performance data, aquifer size, shape, and physical property parameters. It imposes multiple constraints on dynamic reserve, apparent pressure and water influx and establishes a normalized objective function. The research results show that this method not only considers the unsteady water invasion process of water drive gas reservoir from the perspective of percolation but also ensures the minimum error produced by the optimal dynamic reserve and water influx from a mathematical perspective. Searching within a reasonable range of dynamic reserve can find the minimum value of normalized objective function, determining the optimal dynamic reserve and water influx of gas reservoir. The calculation results are reasonable and reliable. This study provides important reference for accurately calculating water influx and dynamic reserve, analyzing water invasion laws, and making development adjustments for similar gas reservoirs in China. |
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