The carbonate reservoirs in the Tarim basin are characterized by old age

deep burial

various types and complex genesis.Through analyzing the characteristics and genetic mechanisms of karst reservoirs

reef-bank reservoirs

dolomite reservoirs and fractured reservoirs

this paper discusses the main factors controlling reservoir heterogeneities.It concludes that favorable sedimentary facies was the material base for forming excellent reservoirs

sequence boundaries controlled the early formation of pores

paleouplifts and tectonic movements determined the development and preservation of the karst and reef-bank reservoirs

and later modification by burial and denudation was critical to the formation of quality reservoirs.On the basis of controlling factor analysis

the paper further suggests that the karst reservoirs were mainly controlled by tectonic uplifting

palaeo-geomorphology and palaeo-drainage system

the reef-bank reservoirs were controlled by the edge high energy facies on platform edge

the dolomite reservoirs mainly developed under the unconformity

and the fracture reservoirs were the products of multiphase tectonic movements.Combining with macro geological background

the fractured karst reservoirs

reef-bank reservoirs

and inner dolomite reservoirs are recognized as favorable exploration targets in Tarim basin.