There are mainly three geothermal reservoir of fissure karst type,pore-type and fissure type in Shandong region.

On the basis of micro section identification data of the reservoirs, the author considers that the main factors affecting physical property parameters are rock type, grain size, porosity type and clay content.

In order to study the change mechanism of permeability in high - saliferous oil reservoir by waterflooding, the change of it is studied under different displacement rate ,salinity, core permeability, injected water quality,multiple of displacement volume on the basis of experiments in microscopic pore model of core slice.

The crack growth law of pore models and the damage law of pores and solid media are obtained for different loads and CT observation scales.

These characteristics include petrofabric,diagenesis types,pore types,distribution rules of clay and diagenetic stage.

This paper,based on many more analytical data,describes the petrophysical properties,pore types and pore textures of deep reservoirs,and divides three types of reservoirs,such as low permeability,medium permeability,and tight reservoirs,of which the low permeability reservoirs are widely spread,and the medium permeability reservoirs are hug.

Based on the pore types of carbonate core in Carboniferous in East Sichuan, combining the logging curve characters of the various pore types, a method for discriminating the pore types of the carbonate reservoir is carried out, which is help to raise logging coincidence rate of quanlitatively discriminating gas and water layeres and quantitatively interpreting the accuracy.

Analyzing well log,well testing,and the core data,this paper discovered that the difference among pore types in the reservoirs is the main reason that the different logging response characteristics existed in the fluid with the same properties,and the misjudgement occurred mainly in the intercrystal p.

Based on the data of lithologic analysis and microscopic examination,the characteristics are studied,which include lithology,diagenesis type, pore type,clay mineral distribution and stage of diagenesis of clastic reservoirs in Lower Jurassic on the north margin of Lenghu area in Qaidam Basin.

It is concluded that these clastic reservoirs have low compositional and textural maturity, diagenesis is the early deep-burial later elevating type, pore types are constituted of residual intergranular pores, small amount of dissolution intergranular pores, ma.

Identification of reservoir liquid property vir crossplot method and its application:a case study of porosity reservoir Ordovician in Tahe Oilfield;