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| DOI | 10.1306/1003181611317237 |
| Water flow, oil biodegradation, and hydrodynamic traps in the Llanos Basin, Colombia | |
| Mora A.; Gomez R.A.; Diaz C.; Caballero V.; Parra M.; Villamizar C.; Lasso A.; Ketcham R.A.; Gonzalez-Penagos F.; Rico J.; Arias-Martinez J.P. | |
| 发表日期 | 2019 |
| ISSN | 0149-1423 |
| 卷号 | 103期号:5 |
| 英文摘要 | In this study, we provide new data to understand the groundwater flow patterns in the Llanos Basin and their impact on oil biodegradation and the geothermal regimes as well as how the structural styles and anthropogenic activities impact these patterns. Previous studies suggest an active flow of groundwater and variable salinities whose spatial pattern is apparently unrelated to topographically driven groundwater flow. These observations have led to different hypotheses regarding the influence of groundwater flow on Llanos Basin geothermal gradients and oil biodegradation. In this contribution, we present data regarding the hydraulic heads, salinities, geothermal gradients, and structural styles of the Llanos Basin to propose hypotheses explaining these observations. Structural cross sections and subsurface stratigraphic correlations allow us to suggest that the pattern of flow is best explained by a correlation between groundwater flow and structural styles. A basement map of the Llanos Basin confirms that the most important factor controlling geothermal gradients is the type of basement, whereas the factor of groundwater flow appears to be of secondary importance. The evolution of the basin and the frequent absence of correlation between fresh water and the more biodegraded oils support the interpretation that biodegradation is controlled by an older flow of water that started as early as the Oligocene. Finally, mass balances suggest that the temporal scales and volumes of groundwater flow are much larger than the scales observed during the development of the oil fields. Copyright ©2019. The American Association of Petroleum Geologists. All rights reserved. |
| 语种 | 英语 |
| scopus关键词 | Buildings; Groundwater; Groundwater flow; Oil field development; Stratigraphy; Anthropogenic activity; Geothermal gradients; Hydrodynamic traps; Oil biodegradation; Spatial patterns; Stratigraphic correlation; Structural cross-section; Structural styles; Biodegradation; biodegradation; Eocene-Oligocene boundary; geothermal gradient; groundwater flow; human activity; hydrodynamics; oil; oil field; Oligocene; salinity; stratigraphic correlation; water flow; Colombia; Llanos |
| 来源期刊 | AAPG Bulletin
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/125014 |
| 作者单位 | Ecopetrol Exploration Vicepresidency, Bogotá, Colombia; Ecopetrol-Instituto Colombiano del Petroleo (ICP), Piedecuesta, Santander, Colombia; Institute of Energy and Environment, Universidade de São Paulo, São Paulo, Brazil; Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Universidad de Caldas, Manizales, Caldas, Colombia |
| 推荐引用方式 GB/T 7714 | Mora A.,Gomez R.A.,Diaz C.,et al. Water flow, oil biodegradation, and hydrodynamic traps in the Llanos Basin, Colombia[J],2019,103(5). |
| APA | Mora A..,Gomez R.A..,Diaz C..,Caballero V..,Parra M..,...&Arias-Martinez J.P..(2019).Water flow, oil biodegradation, and hydrodynamic traps in the Llanos Basin, Colombia.AAPG Bulletin,103(5). |
| MLA | Mora A.,et al."Water flow, oil biodegradation, and hydrodynamic traps in the Llanos Basin, Colombia".AAPG Bulletin 103.5(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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