基于达西定律,排水半径和流量趋同的水平/垂直井的生产率指数预测的新型模型
1Federal University Wukari, Department of Chemical Engineering, Nigeria.
Heliyon
|February 7, 2024
概括
一个新的,具有成本效益的模型预测了油井生产率指数 (PI) 对于任何水库类型的水平和垂直井. 这种统一的方法通过根据关键井和水库参数准确预测PI,改善了现场生产规划.
科学领域:
- 石油工程是石油工程中的一个.
- 储水库工程 储水库工程
- 井性能分析分析 井性能分析
背景情况:
- 准确预测油井生产率指数 (PI) 对有效的油田开发和生产规划至关重要.
- 现有的PI模型通常仅限于特定的井型 (水平或垂直) 或水库几何形状 (例如,盒形,圆形).
- 需要一个统一的,具有成本效益的模型,用于不同的井和水库条件.
研究的目的:
- 开发和验证一个新的,统一的模型来预测水平和垂直油井的生产率指数 (PI).
- 将水库异质性和钻井特性纳入一个单一的预测框架.
- 为优化油田生产计划在各种水库类型提供一个具有成本效益的工具.
主要方法:
- 通过将水平截面长度和形成厚度整合到达西方程中,开发了一个新模型.
- 经验确定了使用垂直和水平半径,包括几何伪皮肤和校正参数的外部排水半径.
- 使用来自盒形和圆形水库的数据验证了模型,并使用Crystal Ball软件进行灵敏度分析.
主要成果:
- 新模型准确地预测了不同水库形状的水平和垂直井的PI.
- 透度,井长和井半径对所有井和水库类型的PI预测有重大影响.
- 水平井的排水半径表明与PI的非线性关系.
- 流体粘度和形成体积因子被确定为影响PI的最有影响力的变量.
结论:
- 开发的模型提供了一个多功能且具有成本效益的解决方案,用于在不同的地质环境中预测油井PI.
- 这种进步提高了生产预测的准确性,并支持优化现场开发策略.
- 这些发现突出了流体特性和井特性对石油生产总体效率的关键影响.
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