It was found that there exit paleo-reservoir in Devonian stratum, Tianjingshan structure, in course of investigation of oil-sand resource in the northwest part of Sichuan Basin.

• 摘要在川西北地区进行地表油砂资源调查过程中发现天井山构造下泥盆统平驿铺组石英砂岩中存在古油藏。