The experiment shows that any cell overlaps including all kinds of complex overlaps such as multi cell over.

Based on the structural characteristics,the Mesozoic-Cenozoic superposing basin of Jiyang Depression could be classified into four types of superimposing units: "sag in both Mesozoic and Cenozoic","sag in the Mesozoic and uplift in the Cenozoic","uplift in the Mesozoic and sag in the Cenozoic",and "uplift in both Mesozoic and Cenozoic".

We can divide the geologic reserves of reservoir formation into individual wells,further into well formation and each sedimentary unit.

Based on detailed analysis on sedimentary units of thick oil zones, this paper describes spatial form of single sandbody and boundary relation among different sandbodies through vertically subdividing sedimentary units and structural units and areally subdividing sedimentary microfacies.

Through the contrast between recently drilled wells and old wells, the paper determined a few important guiding beds, reestablished the division and correlation principle for the sedimentary units on the basis of previous recognition, and clarified some confused and wrong ideas.

A new method of predicting chaotic time series using a product unit neural network (PUNN), which is trained by a particle swarm optimizer (PSO) is proposed in this work.