| Authors |
J.E. Rivera De La Ossa, Ecopetrol; A. Bejarano Wallens, SPS Oil; A. Florez
Anaya, Pacific Rubiales; N.S. Santos, Universidad Industrial de Santander
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| Source |
SPE International Conference on CO2 Capture, Storage, and Utilization,
10-12 November 2010,
New Orleans, Louisiana, USA
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| Preview |
Abstract
Because of its petrochemical processes Barrancabermeja refinery produces a
considerable amount of flue gas daily. The Llanito oil field has an original
oil volume of 314 million barrels (MBls) and it has produced 37.9 MBls up to
December 2009, which corresponds to a recovery factor of only 12%, being really
low for 50 years of exploitation.
The application of an enhanced oil recovery process represents an alternative
for improving the final recovery factor. The availability of sources (Water,
gas, chemicals, steam, etc) and the reservoir characterization dictate the
feasibility of the project according to a study carried out. An environmentally
undesirable by-product resulting from refining processes such as flue gas
(Nitrogen + CO2) becomes important when used as raw material in the secondary
or tertiary recovery of oil which affects the increase in production and the
final recovery of hydrocarbons.
This study evaluated experimentally the effect of the injection of the
Barrancabermeja refinery´s flue gas as an enhanced oil recovery method applied
to B Sandstone of the Llanito oil field. The volume of the refinery´s flue gas
was characterizated and calculated; a study of fluid-fluid interaction was
carried out between the flue gas and petroleum at reservoir conditions. The
interaction between reservoir fluid and the porous media was evaluated and the
best flue gas injection mechanism was determined in order to increase the
recovery factor for the B sands of Llanito oil field. In addition to increase
the final recovery factor, the study aims to reducing flue gas emissions and
consequent environmental benefit.
Introduction1
Globally there is a concern to reduce the adverse effects of industrial flue
gases on the environment. As a consequence, it has been a lot of emphasis to
inject the flue gases that contain high CO2 concentration and catch them in
adequate geological formations. A feasible way is inject it in oil reservoirs,
by means of which it can be additionally achieved the enhanced recovery of
hydrocarbons, with the consequent increase in the final recovery factor in the
reservoir.
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