Caracterización de yacimientos mediante análisis sismoestratigráfico e inversión sísmica ante presencia de hidratos de gas
Recently in Colombia, conventional hydrocarbon reserves have been reduced. Gas hydrates have been a new energy alternative to unconventional reservoirs. Colombia is restricted to the marine environment in the Continental shelf and formed under specific pressure and temperature conditions. In seismic...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2019 |
| País: | Colombia |
| Institución: | Universidad Nacional de Colombia |
| Repositorio: | Repositorio UN |
| Idioma: | español |
| OAI Identifier: | oai:repositorio.unal.edu.co:unal/75976 |
| Acceso en línea: | https://repositorio.unal.edu.co/handle/unal/75976 |
| Access Level: | acceso abierto |
| Palabra clave: | 550 - Ciencias de la tierra Baja Guajira Sub-Basin BSR AVA analysis Gas hydrates Mud diapirism Seismic inversion Subcuenca de la Baja Guajira Reflector simulador del fondo marino Hidratos de gas Diapirismo Análisis AVA Inversión sísmica |
| Sumario: | Recently in Colombia, conventional hydrocarbon reserves have been reduced. Gas hydrates have been a new energy alternative to unconventional reservoirs. Colombia is restricted to the marine environment in the Continental shelf and formed under specific pressure and temperature conditions. In seismic sections, are early indicator of the presence of gas hydrates is the Bottom Simulating Reflector (BSR). The presence of gas hydrates identified and characterized in Baja Guajira Sub-Basin offshore. For this research, 2D four seismic lines and three wells used. By this means seismic processing of line 1, a pre-stacked time-migrated seismic imaging obtained, and subsequently, the AVA analysis showed a class 3 anomaly, indicating the presence of gas. Likewise, the seismo-stratigraphic interpretation and the study of the petrophysical logs of the wells allowed us to observe the relationship and continuity of the BSR reflector interval of line 1, with the gas zone of Well-1, in addition to the influence of diapirism with lateral changes and the distribution of gas hydrate in seismic lines. Finally, four inversion models constructed: acoustic impedance, P wave velocity, density and Bulk module, which showed significant changes in the BSR reflector and their values correlate with the benefits of the physical properties of gas hydrates. |
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