Analysis of Oil-Water Distribution Law and Main Controlling Factors of Meandering River Facies Reservoir Based on the Single Sand Body: A Case Study from the Yan 9₃² Layer of Y Oil Area in Dingbian, Ordos Basin

Table 1

Configuration classification of meandering river facies reservoir in the study area.

Stratum level	Interface level	Sand body composition unit	Sedimentary unit
Y 9	Level 4	—	—
Y 91, Y 92, Y 93	Level 3	—	Sedimentary facies
Y 93^1, Y 93^2	Level 2	Composite sand body of the main channel	The complex of single microphase
Y 93^2-1, Y 93^2-2	Level 1	Single sand body of main channel, river flank, and interchannel bay	Single microfacies