Physical simulation experiments have been performed for hydrocarbon migration and accumulation in Kela gas field in Kuqa depression

and the following 3 major understandings have been achieved:(1) In Kela 2 gas field

hydrocarbons have been generated in the deep source rocks

driven by buoyancy

migrated through thrust faults and carrier beds and accumulated in the anticlines or faulted anticlines. The thrust faults and carrier beds have played an important role in the reservoiring process of Kela 2 gas field. (2) The hydrocarbons in the Kela 2 structure have come from multiple sources rather than from a single source. (3) The gas from multiple sources have continuously accumulated in the Kela 2 structure above

resulting in the gas reservoir to be characterized by overpressure and high abundance. While the two deeper structures that are similar to Kela 2 structure and connected by faults have limited size and abundance of hydrocarbons.