The petroleum geology of the sub-Andean Maranon-Ucayali Basin, onshore Peru

Conference · Mon Feb 01 04:00:00 EST 1993 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:5941692

Mathalone, J M.P. ^[1]; Montoya, M ^[2]

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1. Eurocan USA Inc., Houston, TX (United States)
2. Petroperu, Lima (Peru)

The Maranon-Ucayali Basin complex covers seventy five million acres east of the Andes. It trends north to south from the Ecuadorian Border where it is synonymous with the Oriente Basin to within 200 kilometers of the Bolivian border. The stratigraphy of the basin ranges from Ordovician to recent, covering remnants of larger Lower and Upper Paleozoic and Mesozoic basins. The basin is currently the foreland trough of the overthrusting Eastern Cordillera and, in common with many other sub-Andean Basins, is a Miocene to Recent feature. Three main compressional structural events are usually visible on seismic data, a Hercynian (Carboniferous-Permian) episode in the Ucayali Basin or Triassic event in the Maranon Basin, followed by Lowermost Cretaceous uplift and erosion and strong Miocene (Quachua) compressional folding. Oil prone source rocks are recognized mainly in the Devonian, Permian, and Cretaceous, but with significant potential in the Triassic and Jurassic. Four main families of oils have been identified of which three correlate with Cretaceous and Permian source rocks and one with neither. Approximately one billion barrels of oil and five trillion cubic feet of wet gas have been discovered to date, almost exclusively reservoired in Cretaceous deltaic to shallow marine clastics. A variety of trap types have been identified for which examples will be presented. These range from basement involved and detached thrust faulted anticlines to inversion and combination drape/compression anticlines.

• OSTI ID: 5941692
• Report Number(s): CONF-930306--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 77:2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ANDES
ANTICLINES
CRETACEOUS PERIOD
DEVELOPING COUNTRIES
ENERGY SOURCES
EROSION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGIC TRAPS
GEOLOGY
LATIN AMERICA
MESOZOIC ERA
MINERAL RESOURCES
MOUNTAINS
NATURAL GAS
ONSHORE SITES
PALEOZOIC ERA
PERU
PETROLEUM
PETROLEUM DEPOSITS
PETROLEUM GEOLOGY
PRODUCTION
RESOURCE POTENTIAL
RESOURCES
SEDIMENTARY BASINS
SOURCE ROCKS
SOUTH AMERICA
STRATIGRAPHY
TRIASSIC PERIOD