There are different species and diversities of gravity mine equipment and vertical-wheel dense media size classification machine is one of the important one of them.

Analysis of Dense Media Density Automatic Control System;

This digitized measuring instrument is designed on the principle of electromagnetism,combining the actual coal separation with heavy mediums.

The study of well test interpretation method for a triple medium reservoir;

Approach to fluid flow in triple medium fracture-cavity reservoirs

Well-test analysis of multi-branched horizontal wells in a triple medium reservoir

Analysis on pressure behavior of trilinear flow model of vertical fracture wells in triple porosity reservoir;

According to limit conductivity vertical fracture conducted by hydraulic fracture in triple porosity reservoir, based on the Warant-Root model in double porosity, mathematical model with continues point source has been built firstly.

Transient productivity model is established for pressure-sensitive triple media reservoir composed of basement system,fracture system and cavity system with consideration of cavity permeability declining exponentially with the increasing of pressure drawdown.