class=MsoNormal>com:office:office" />

class=MsoNormal>By using the accumulation dynamics, reservoir geology and high-resolution sequence stratigraphy, the lithologic reservoirs are systemically analyzed and evaluated for Upper Triassic Yanchang Formation in com:office:smarttags" />Ordos Basin based on the regional tectonic-sedimentary setting, general accumulation rule and production dynamic effect. The authors conclude the controlling factors for petroleum distribution and reservoirs scale and rapid evaluation indices for production forecasting and development program choosing the lithologic reservoirs in this region.