Study of controlling factors of Carboniferous stratigraphic and structural traps and the favorable areas in the east of Sichuan Province

According to exploration drilling data of Carboniferous strata in the east of Sichuan Province, Carboniferous stratigraphic and structural traps were classified in this paper. On the basis of this research achievement, controlling factors of these traps was analyzed that the sedimentary fade are subordinate factors, while paleokarsts and paleostructures are the main controlling factors. During the proccess, palaeokarst's topography of Huanglong formation has been resumed according to karst's denudation intensity data provided by relic thickness of Huanglong formation, erosion land modification's printer of Huanglong formation reflected by carbargilite's isopach map of Liangshan formation and ancient hydrologic condition showed by characteristic of karst's facies. Structural divisions of paleokarsts in the east of Sichuan Province have been done and at last favorable areas with Carboniferous stratigraphic and structural traps in this area have been forecasted.