Abstract: In light of seismic reflection amplitude, taking Well Block Lungu-5 as an example, the quantitative calibration of carbonate reservoir is made, and characteristics of different reflection amplitudes on seismic profile for a variety of reservoirs in it are studied, based on which the spatial and lateral distribution and scale, as well as the connectivity and quantitative volume of the reservoir space are gained. By this technical idea and method, reasonable prediction is performed of distribution patterns and volume of reservoir space in the fractures and caverns system of Well Block Lungu-5, improving the rate of successful drilling. For quantitative research of carbonate reservoirs, this paper presents a helpful approach without fail.

Key words: Tarim basin, carbonate rock, buried hill, amplitude, calibration, reservoir rock