Abstract: Division and comparison of sand body are important contents in field development. Sand body compar-
ison is difficult because Ng5， Ng6 of Kengdong18+32 is meandering stream. This article depicts the sedimentation
type and feature of meandering stream in Kengdong18+32. The layer position is divided by means of marker bed
and assisting marker bed. Time cell is determined by the way of sedimentation cycle and uniform thickness section，
and defined with height unite area analysis. Finally， sand body comparison scheme is built. The article considers
feature of meandering stream sufficiently. It also interprets the effect of differential compaction on cut plane， sand
bed compare graph of filled and normal river channel， superimpose or lower cutting comparison of thick sand and
thin sand body from the view of the sedimentation feature of meandering stream. Then the article builds up the way
of sand body comparison of meandering stream. Fine sand body comparison and division provide reliable geology
foundation for further geology research， numerical simulation and analysis of remaining oil.

Key words: meandering stream, thin sand body, comparison and division, cycle of sedimentation, equal elevation