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.

The preservation of multiple, clearly deformed Late Quaternary fluvial terraces and nearly continuous exposure of underlying Neogene sediments make the Mingyaole anticline detachment fold system particularly favorable for unraveling the geomorphic and structural history of underlying fold growth within the southwestern Chinese Tian Shan Foreland Basin.