According to sequence stratigraphy, on the basis of integrated study on outcrop, well drilling, well logging and seismic data, one third-order sequence has been recognized in the Yijianfang Formation.

• 摘要依据层序地层学理论，通过露头、钻井、测井及地震资料的综合研究，将一间房组划分为一个三级层序；