Abstract: Oil shale in Mujianggou Area of Ordos Basin is a set of oil shale sediments associated with coal, and the major oil shale layers are mainly distributed at the bottom of coal bed, with the thickness ranging from 1m to 2.5 m. These oil shale layers get thinner gradually from southeast to northwest, of which the burial depth gets larger. Oil shale distribution is controlled by sedimentary environment and structures. Through oil-bearing rate analysis, single-well oil shale features analysis, and oil shale outcrop survey analysis, the distribution law of oil shale in Mujianggou Area is determined. Oil shale is thicker in the low-lying area, while it is thinner or dies out in higher area. This paper also sums up the sedimentary features and models of oil shale which is distributed in the sediments of bays and lakes. Finally the resources of oil shale in the area are calculated.

Key words: oil shale, resources calculation, distribution law, controlling factor, Mujianggou, Ordos Basin