The configuration parameters of UF surface pore size distribution, porosity and pore density were measured with scanning electron microscope (SEM), the field emission scanning electron microscope (FESEM) and permeability rate method.

In block A in Erlian oilfield the interpretation result indicates that some reservoirs with low porosity and low permeability have poor oil & gas reserve,but have high production capability after being fractured.

Considering the characteristics of low porosity and low permeability in the depression, effective evaluation methods for shale volume, porosity, medium diameter of particle, oil saturation and permeability are presented using Artificial Neural Network technique combined with con.

Based on coal seam gas industry that features low permeability in coal reserve bed in China,it is discussed the feasibility of an operational technology,well drilling,will be done by drilling holes parallel to the level of coal bed outside of the bed or projecting holes in multilayer for large slope pits with low polution for coal reserve bed.

Evolution law of mining coal permeability by real-time tracer monitoring system;

A new method for calculating sandstone permeability by using capillary pressure curves.;

Influence of permeability on single well controlling reserves in low permeability gas reservoirs;

Combined with the oil-water relative permeability of the above cores,they also determine the upper limits of the commercial production of T3x4 gas reservoir in CZCX,H8 gas reservoir in WODS and Js4 oil reservoir in CZNC to be 55%,52% and 50%,respectively.