Fluvial Facies Architectural-Elements Combinations Control Remaining Oil Spatial Distribution Regularities

Lin Bo
SINOPEC Sheng li Oilfield, China

The 34layer, segment 2 of Shahejie formation, Zhong 2 region of Sheng tuo oilfield, being taken as an example, fluvial facies architectural-elements analysis was applied to establish architectural- elements 3D spatial distribution model. By means of searching the relationship between architectural-elements and remaining oil distribution, some conclusions on remaining oil spatial distribution regularities which controlled by fluvial facies architectural-elements combinations were generalized. A 3D distribution modeling for architectural-elements is developed by sequential indicator simulation method. Remaining oil are mainly gathered in some areas such as interior of low seepage performance architectural-elements; interface among high and low seepage performance architectural-elements; relatively poor permeability in interior of high seepage performance architectural-elements and so on. The remaining oil saturation is higher in low seepage performance architecturalelements and reduces gradually in the direction of high seepage performance architectural-elements.

AAPG Search and Discovery Article #90185 © AAPG Geoscience Technology Workshop, Revisiting Reservoir Quality Issues in Unconventional and Conventional Resources, Austin, Texas, November 12-13, 2013