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Updated: Jan 20, 2026
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Igneous Intrusive Rock: Formation, Texture and Composition
Published on: April 30, 2023
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岩入侵对砂岩水库的热效应的影响
Yibo Wang1,2,3, Xuanlong Shan1,2,3, Wentong He1,2,3
1College of Earth Sciences, Jilin University, No. 2199 Jianshe Street, Changchun, Jilin 130061, China.
ACS omega
|January 19, 2026
概括
岩石入侵显著降低了砂岩的多孔性,而更高的温度会导致更大的损失. 了解这些热效应对于在受影响的油田进行石油和天然气勘探至关重要.
科学领域:
- 地质地质地质地质地质地
- 地质化学 地质化学
- 石油科学 石油科学 石油科学
背景情况:
- 岩入侵对砂岩水库质量的影响尚未完全理解,尤其是热效应.
- 现有的研究缺乏详细的洞察力,了解热量变化对水库性质的具体机制.
研究的目的:
- 研究岩入侵对砂岩多孔性和水库质量的热效应.
- 阐明不同温度区的砂岩水库中热变化的机制.
主要方法:
- 在BZ34-9油田和Lishu断层低谷外进行现场研究.
- 实验室分析包括核磁共振 (NMR),X射线衍射和微CT.
- 热模拟模型和高温实验.
主要成果:
- 靠近入的区域可显著降低孔隙性:在高温区 (400-600°C) 中为30-50%,在低温区 (高达400°C) 中为16-20%.
- 热量在砂岩层中广泛传播,随着距离的增长而迅速衰变.
- 矿物膨胀和粘土脱水会使孔隙度降低到700°C以下;水泥分解会使孔隙度增加到900°C左右;岩石融化和泡形成会破坏1200°C以上的连接性.
结论:
- 岩石入侵通过热变化导致砂岩水库的孔隙性显著减少.
- 热模拟和实验数据为理解水库性质变化提供了一个框架.
- 这些发现对于石油和天然气勘探和开发战略在受岩入侵影响的地区至关重要.
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