The Carboniferous Kalashayi Formation of Block A in the Tahe oilfield is one of the most important oil-bearing formations in the area.A thorough understanding of its spatial distribution

thickness and physical pro-perties is crucial to exploration and production.To tackle the problem

the researchers study the construction of target characteristic curves based on a fine analysis of petrophysical features and obtain a high-resolution inversion data volume for prediction of favorable sand bodies by adopting frequency-divided inversion method.As a result

an effective technical process is established for the prediction of the Carboniferous reservoirs in the area and its application has been proven successful.