地质来源和井完整性对孤儿和废弃油气井的甲排放产生影响
Nicholas J Gianoutsos1, Karl B Haase2, Justin E Birdwell1
1U.S. Geological Survey, Central Energy Resources Science Center, Denver, CO, United States of America.
The Science of the total environment
|December 27, 2023
概括
来自美国孤儿石油和天然气井的甲排放源于石油储备,煤层或地下生物过程. 识别这些来源和井状况有助于优先考虑哪些井需要堵塞,以保护环境.
科学领域:
- 环境科学 环境科学
- 地质科学是地球科学.
- 石油工程是石油工程中的一个.
背景情况:
- 160多年来,美国的石油和天然气钻探已经创造了许多未插电的孤儿和废弃的井.
- 其中一些井泄漏甲和危险化学物质,造成环境风险.
- 估计存在12万个已记录的,可能有多达一百万个未记录的孤儿井.
研究的目的:
- 确定关于来自孤儿和废弃井的甲排放量测量的关键研究.
- 分析同位素甲数据以对排放源进行分类.
- 了解地质来源和井条件,使甲迁移.
主要方法:
- 对报告甲排放测量的研究进行文献综述.
- 分析之前发表的同位素甲数据.
- 根据地质起源和井口条件对甲来源的分类.
主要成果:
- 甲的三个主要地质来源:石油储备,煤层和甲生成.
- 热生成的石油气储库表现出最高的测量排放率.
- 煤床甲来源显示了下一个最高的比率,其次是生物源.
结论:
- 了解地质来源和井状况对于估计甲排放至关重要.
- 这些知识有助于识别具有高排放井的地区.
- 可以显著改进对井的优先考虑.
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