关键词: 塔里木盆地, 碳酸盐岩油藏, 岩溶, 古隆起, 勘探方向

Abstract: The Ordovician reservoirs develop the networks consisting of karst cracks and hole in the Tarim Oil Field,in which the high and stable production can be attained with obvious irregularity and inner heterogeneity.Under the conditions with good hydrocarbon resource rocks,the storing space formed in the karst of palaeohighs,is the basic condition for the reservoir formation.The exploration direction in the inner part of Tarim Basin is as followed:The first is to clarify the marine carbonates as the main target and to approach the hydrocarbon resource rocks;the second is,with the basis of long-developed palaeohighs and palaeoslopes,to explore the Akule high comprehensively;the third is,using as the reference the favorable conditions of reservoir formation in the Tarim oil field without its limitation,to expand the exploring field of vision with attention to the hydrocarbon-bearing dolomites.

Key words: Tarim Basin, carbonate reservoir, karst, palaeohigh, exploration direction