Characteristics and main controlling factors of the Ordovician carbonate rock reservoirs in Lungu oilfield,Tarim basin

According to the Tarim basin buried hill Ordovician reservoir exploration and development of the difficulty,based on the round of the ancient region of well drilling,core,logging,seismic reflection,well test and analysis of test data with the application subject of the new theory and technical method,round the ancient region the Ordovician carbonate rocks with various diagenesis modification,its primary pores have been destroyed,the effective pore space is mainly caledonian-hercynian tectonic and karstification formation fracture and solution pores,the distribution of the reservoir is heteropical.Karst seam hole type development mainly by the lithology of reservoir rock facies,Karstification and tectonic fracture effect factors such as control.Studies of types of carbonate reservoir in the region,nature and characteristics find out the main controlling,help to study hydrocarbon accumulation,distribution and accumulation model,for the region is of great significance to the increase in oil reserve and production.