Abstract:

Tarim Basin goes through the evolution of four different carbonate platform structure types. The structure characteristics of carbonate sequences have distinct diversities in different zones. A set of carbonate strata is developed in Cambrian-Ordovician in Keping area and could be divided into 7 kinds of carbonate sequence constituting patterns, while sequence in Kuluketage area mainly is sea floor fan deposition in half deep-sea to deep-sea background. Phase belt and sequence boundary have important impact on reservoir development, and sequence boundaries with different scales  have controlled the development of carbonate reservoir under these boundaries and have transportation function on fluid under burial conditions. Fluid has reconstructed the formation of burial karst reservoir, and sequence boundary and weathering-leaching zone have controlled the development of weathering crust karst reservoir. Dolomite reservoir and reef flat reservoir are controlled by sedimentary facies and diagenetic facies.

Key words: Tarim Basin, platform structure, sequence constituting pattern, tract system, karst reservoir