3D Petroleum
Systems Modeling in Fold and Trhust Belts - A Case
Study from
Di Benedetto,
Matais1, Emilio Rocha2, Simone Sciamanna3, Friedemann Baur4, Carolyn Lampe5 (1) Repsol YPF, Buenos Aires, Argentina (2) Repsol,
N/A, Argentina (3) RepsolYPF E&P Brazil, Rio de Janerio, Argentina (4) Integrated Exploration Systems, Aachen, Germany (5) Integrated Exploration Systems, 52072 Aachen, Germany
3D Petrolum
Systems Modeling in Fold And Thrust Belts – A Case
Study from
A 3D Petroleum Systems Modeling (PSM)
study has been performed in a fold and thrust belt using a new approach called PetroMod® 3D-TecLink, developed by IES. TecLink
allows to investigate petroleum systems in complex
tectonic settings, where not only the thermal history but also the generation,
migration and accumulation of hydrocarbons are influenced by thrust faults. For
the first time PSM is used to simulate a fully integrated 3D model through
time. The input data comprises the present-day geometry, 14 restored paleo-sections as well as temperature, maturity and
pressure calibration data along key-wells.
The study area is located in the Sierras Subandinas of Bolivia, 120 km northeast of Tarija and includes gas and condensate fields. Sedimentary
sequences of up to 8 km have been deposited from Early Ordovician up to late
Pliocene, with a foreland basin setting from early Miocene. During the last 7
Ma the kinematics were forced by thin-skin tectonics that generated a
hinterland duplex geometry. Well known type II - III source rocks are the
Middle Devonian Los Monos and the Early Devonian Icla Formation with TOC contents of up to 2 wt%. The
Silurian Kirusillas formation is a hypothetical
source rock. The Los Monos formation acts as a
regional seal responsible for generating overpressure compartments. The main
reservoirs are the fractured Early Devonian quartzites
of the Huampampa and the Late Devonian Iquiri formation. The model results depict the observed
temperature and pressure regime as well as the HC generation within the fold and
thrust belt.
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California