mud well meaning in Chinese

泥阱

According to the data of seism , mud well logging , well logging , cores and the principles of well correlation , this third - order sequence is divided into three fourth - order sequences ( system tracts ) and nine fifth - order sequences ( parasequence sets ) . the lowstand systems tract is formed in the background of forced lake regression , which is consist of . three prograding parasequence sets
根据地震、综合录井、测井、岩心等资料，依据井间可对比的原则，研究层段的三级层序划分为三个四级层序(即体系域)和九个五级层序(即准层序组) 。