通过考虑底孔元件的现场应力来开发岩石位相互作用分析模型
Habiballah Zafarian1, Mohammad Javad Ameri2, Alireza Dolatyari1
1Department of Petroleum Engineering, Amirkabir University of Technology, Tehran, Iran.
Scientific reports
|March 12, 2024
概括
一个新的数学模型通过计算现场应力,准确地预测了石油/天然气井中的石块相互作用. 这改进了钻井工程,提供了更精确的力和故障角度计算,与以前的模型不同.
科学领域:
- 钻井工程 钻井工程
- 岩石机械学 岩石机械学
- 石油工程是石油工程中的一个.
背景情况:
- 精确的石块相互作用建模对于高效的石油/天然气井钻井至关重要.
- 现有的模型往往忽略了现场应力或简化了岩石断裂角度.
- 这导致钻头选择不足于最佳,并增加了运营成本.
研究的目的:
- 开发一个全面的数学模型,用于石油/天然气井钻井中的岩石-石头相互作用.
- 将现场应力对岩石断裂的影响纳入其中.
- 为了提高预测切削力和故障角度的准确性.
主要方法:
- 审查了关于岩石与石头互动的现有文献.
- 采用分析方法检查底孔元件的应力,包括位和现场应力.
- 应用叠加原理来计算总应力和确定岩石切割参数.
- 开发了一种用于垂直和偏离井的新型数学模型.
主要成果:
- 拟议的模型准确地考虑了现场应力,与以前的模型不同.
- 以前的模型大大低估了垂直井的岩石断裂角度 (高达21%) 和切削力 (高达48%).
- 对于倾斜的井,新模型预测与以前的模型相比,切割力大大降低.
结论:
- 这种新的数学模型通过包括现场应力来提供更准确的石块相互作用表示.
- 这种更高的精度对于优化钻头设计和选型在石油/天然气勘探中至关重要.
- 这些发现突显了先前模型的局限性,并为钻井工程提供了显著的进步.
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