The paleolandform of "KaijiangLiangping" trough formed at the end of

Longtan period and the continuous transgression of Changxing period jointly control the growth

morphology and distribution of Changxing Formation bioherm. Based on numerical simulation

analysis, the authors established the seismic response model and revealed that the bioherm forward

modeling of seismic profiles and the bioherm model have good similarity. 3D seismic data and drilling

data were employed to make seismic facies and sedimentary facies analysis and, as a result, the 

"platform marginal reefphase" phase belt formed at the end of the Changxing Formation was

recognized. On such a basis, the shape and distribution characteristics of the bioherm were inferred.

The wave impedance inversion and logging curves were also studied, and the results show that these

two methods also have obvious effects in the prognostic work.