02354nab a2200217 4500 20260520000323.0 260224s2015 xxu ing Inglés Controls on petroleum composition in the Llanos basin, Colombia Implications for exploration ago. 2015 17/10/2017 ; 17/10/2017 32 p. ; 1503-1535 Transcripción del resumen del autor: Physical and geochemical characteristics of produced Previous HitpetroleumNext Hit from the central region of the Previous HitLlanosNext Hit Previous HitbasinNext Hit, Colombia, were analyzed to understand the Previous HitpetroleumNext Hit charge history and alteration processes. Previous HitPetroleumNext Hit properties in the study area are the result of the complex charge history of the oil fields. The amount of gas in fluids is controlled by the migration distance from the late or, possibly, the current generation kitchen located beneath the foothill deformation zone. Gas influx decreases toward the foreland domain, as indicated by lower values of the gas–oil ratio and saturation pressure. The API gravity of the oil samples is mainly controlled by the intensity of biodegradation. Marine-sourced oils accumulated in shallow reservoirs of the foreland prior to the onset of Andean deformation. Those fluids were subjected to different levels of biodegradation, depending on the time they remained at reservoir temperatures lower than 80°C (176°F) and before being buried to their maximum depth. Geochemical data suggest multiple charge pulses from different source kitchens of two main types of source rocks, as well as different biodegradation levels. The proposed Previous HitpetroleumNext Hit charge and alteration model allows prediction of the temperature history of a reservoir and the most likely physical properties of the Previous HitpetroleumNext Hit at a specific location. The model can be used as an exploration tool to assess the risk of charge prior to drilling in unexplored areas of the Previous HitbasinTop. 8 AAPG Bulletin ARTICULO Garcia Bautista, Diego Fernando 57392 Vaz dos Santos Neto, Eugenio 13936 Penteado, Henrique L. de B. 57393 191355 191355 0 0 0 0 259174 BAAB BAAB 2026-03-06 200063630 0 200063630 2026-03-06 00:21:56 2026-03-06 ARTICULO