Based on theories and methods of fluid migration/sealing in fault zones, the hydrocarbon migration and accumulation behavior in fault-bend folds and fault-propagation folds is discussed, taking example by Kuqa foreland thrust belt of Tarim basin in this paper.

In this paper we present the results of a fine structural geometric analyses of the seismic reflection profiles across the Dongying depression, where half-graben structures display the features of kink-band deformation and extensional fault-bend fold.

Normal deductive method is used to study the variation regularity of early fissure attitude in the area with superposed flexural folds.