Abstract:

In this paper，we discuss key issues constraining exploration and development of carbonate reservoirs in the Tazong area such as analysis of seism ic response characteristics and calculation of cavity volume by using wave equation forward modelling.Through many forward modellings，we figure out the geological implication of various complex seism ic responses such asmoniliform high amplitude，mutton chop-shaped high amplitude，chaotic reflection and low amplitude.We also bring forward a new method for calculating cavity volume with forward modelling correction.The study shows that this method is an effective way to calculate cavity volume of carboˉnates and can provide help for efficient development and reserve estimation.

Key words: seismic response feature, volume calculation, forward modelling, carbonate rock, reservoir prediction, Tarim Basin