Abstract: The high efficient wells in carbonate fractured-vuggy reservoirs in western Tazhong area are reflected as beads-shaped or sheetshaped strong reflection from the seismic profile. Study on the relationships among the reflection, reservoir type and production performance is of significance for optimizing well location in this area. This paper presents the corresponding relationships among them, including the high efficient well reflection characteristics of the vertical range and horizontal distance of the first wave trough, and the location of effective reservoirs in the seismic profiles, and gives a set of characteristic chart of the wells, based on data from the seismic profiles, engineering anomaly, deliverability test, production performance by means of techniques for numerical simulation and fine calibration of reservoirs. Because the first wave trough is large vertically and the horizontal distance is long, the best location of the high efficient well can be chosen. To drill horiontal wells and explore the non-beads-shaped reservoirs at the same time could be a good method for efficient development of such reservoirs.

Key words: Tarim basin, carbonate rock, high efficient well, reflection characteristic, reservoir type, production performance