DOI: 10.1306/04161511107
Scopus记录号: 2-s2.0-84941312839
论文题名: Petroleum system modeling in the Eastern Cordillera of Colombia using geochemistry and timing of thrusting and deformation
作者: Sánchez N. ; Mora A. ; Parra M. ; Garcia D. ; Cortes M. ; Shanahan T.M. ; Ramirez R. ; Llamosa O. ; Guzman M.
刊名: AAPG Bulletin
ISSN: 0149-1520
EISSN: 1558-9250
出版年: 2015
发表日期: 2015
卷: 99, 期: 8 起始页码: 1537
结束页码: 1556
语种: 英语
Scopus关键词: Biodegradation
; Hydrocarbons
; Kitchens
; Oils and fats
; Stratigraphy
; Bacterial activity
; Early Oligocene
; Eastern Cordillera
; Hydrocarbon migration
; Paleocene-Eocene boundaries
; Petroleum systems
; Shallow reservoirs
; Thermal maturity
; Tectonics
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: In the present study, stratigraphie data from cores and outcrop sections are integrated with data on thermal maturity, organic facies, and thermochronometric information to reconstruct the tectonic and associated petroleum system evolution of the eastern foothills thrust belt along the Colombian Eastern Cordillera, one of the most prolific hydrocarbon provinces in northern South America. Sedimentary and tectonic burial of the foreland autochthon caused maturation of the Coniacian to Santonian shallow marine Chipaque Formation, resulting in successive and diachronous episodes of hydrocarbon migration and trapping. One-dimensional and two-dimensional maturation modeling indicates that oil generation from the Chipaque Formation began at the Paleocene-Eocene boundary (55 Ma) in the southern parts of what is now the Eastern Cordillera and progressed to the north. By the late Oligocene, tectonic inversion of the Eastern Cordillera exhumed most of these kitchens, terminating the oil generation from the Chipaque Formation. Kitchens migrated northward and eastward during the Oligocene and early Miocene. Because of the absence or subsequent erosion of traps, it is likely that the southernmost source rocks expelled most of their oil without any appreciable accumulation. Our modeling indicates that there were two important kitchens during the Cenozoic. The larger of the two was located in the present-day Eastern Cordillera, and it was most productive in the late Eocene-early Oligocene. The second kitchen, which generated oil throughout the Neogene, was located in the foredeep of the Llanos basin, adjacent to the mountain front. Considerable amounts of oil from this recent pulse have accumulated in both deep and shallow reservoirs along the eastern foothills. The modeled reservoir charge history also explains the substantial biodégradation of oils in reservoirs that are today much too deep to support the process. Biodegradation must have occurred when the reservoirs were shallower and at cooler temperatures, and they remained active until the reservoirs were buried to depths where temperatures were high enough to prevent further bacterial activity. Copyright ©2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941312839&doi=10.1306%2f04161511107&partnerID=40&md5=822bba2a3b144d16af3e30fd3b48d3ef
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13091
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
There are no files associated with this item.
Recommended Citation:
Sánchez N.,Mora A.,Parra M.,et al. Petroleum system modeling in the Eastern Cordillera of Colombia using geochemistry and timing of thrusting and deformation[J]. AAPG Bulletin,2015-01-01,99(8)