TY - GEN
T1 - Filtration anisotropy in terrigenous collectors and its influence on oil field development (Western Siberia deposits)
AU - Krasnoshchekova, Lyubov A.
AU - Merkulov, Vitaliy P.
AU - Cherdantseva, Darya A.
PY - 2017
Y1 - 2017
N2 - The paper deals with the oil recovery problem, research methods for heterogeneity parameter determination in oil-bearing horizons and its influence on the reservoir porosity and permeability. The article describes the author's lithologic-and-petrophysic anisotropy detection method. This method allows quantifying the directions, quantities, the lateral heterogeneity influence probability in the reservoir and takes into account its possible manifestation in the field development process. For measuring magnetic susceptibility of rocks paleomagnetic oriented core samples were used. Preferred orientation directions of elongated quartz grains in sandstones were defined by microscope using oriented thin sections. The magnetic anisotropy ellipsoids have high correlation with the preferred orientation directions of the elongated grains in the reservoir rocks. The spatial relationship between the grain orientation and the terrigenous reservoirs hydrodynamic formation features was identified; it predetermines the pore matrix structure and the filtration parameter anisotropy. The anisotropy factor was determined by comparing actual and estimated water cut indices. Based on the horizontal anisotropy parameters, field model was constructed. This model gives an elliptical waterflooding front - the closest to the real geological and hydrostatic field model.
AB - The paper deals with the oil recovery problem, research methods for heterogeneity parameter determination in oil-bearing horizons and its influence on the reservoir porosity and permeability. The article describes the author's lithologic-and-petrophysic anisotropy detection method. This method allows quantifying the directions, quantities, the lateral heterogeneity influence probability in the reservoir and takes into account its possible manifestation in the field development process. For measuring magnetic susceptibility of rocks paleomagnetic oriented core samples were used. Preferred orientation directions of elongated quartz grains in sandstones were defined by microscope using oriented thin sections. The magnetic anisotropy ellipsoids have high correlation with the preferred orientation directions of the elongated grains in the reservoir rocks. The spatial relationship between the grain orientation and the terrigenous reservoirs hydrodynamic formation features was identified; it predetermines the pore matrix structure and the filtration parameter anisotropy. The anisotropy factor was determined by comparing actual and estimated water cut indices. Based on the horizontal anisotropy parameters, field model was constructed. This model gives an elliptical waterflooding front - the closest to the real geological and hydrostatic field model.
KW - Anisotropy
KW - Field model
KW - Oil fields
KW - Oriented core samples
KW - Reservoir
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U2 - 10.5593/sgem2017/14/S06.083
DO - 10.5593/sgem2017/14/S06.083
M3 - Conference contribution
AN - SCOPUS:85032482159
SN - 9786197408263
T3 - International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SP - 659
EP - 666
BT - Education and Accreditation in Geosciences; Environmental Legislation, Multilateral Relations And Funding Opportunities
PB - International Multidisciplinary Scientific Geoconference
T2 - 17th International Multidisciplinary Scientific Geoconference, SGEM 2017
Y2 - 29 June 2017 through 5 July 2017
ER -