Experimental study on enhancing oil displacement efficiency of waterflooding in ultra-low permeability reservoir;

Based on the analysis on capacity and production of ultra-low permeability reservoir seriously, directly against threshold starting pressure and non-linear vadose in ultra-low permeability reservoir,a series of new methods such as production test approaching.

Application of a new-style acid fluid system with deeply pentrability in extra-low permeability reservoir in Chang8 of Xifeng Oilfield;

Aiming at identifying microfacies belt of Main Framework Sandbody and filtering the relative high permeability,high production favorable oil-bearing areas with extra-low permeability reservoir in the middle of Shanbei Slope of Ordos Basin,it was presented that using Energy Thickness of Single Permeability Sand Bed controlled and classified optimum sedimentary microfacies belt.

Integrated study of four-property relationship of low permeability reservoir:case study of Jirgalangtu depression,Erlian basin.;

Study and application on induced flow technology in low permeability reservoir;

Flow units of low permeability reservoir of 4-7 sand sets in upper Es_2 in south of Pucheng Oilfield;

Characteristics of diagenetic reservoir facies of low-permeability reservoir in Sulige Gas Field;

Origin type of tectonic fractures and geological conditions in low-permeability reservoirs;

Origin of low-permeability reservoir and distribution of favorable reservoir;

After a period of out flow for low permeable reservoir, formation energy decreases that makes lots of annulus water pouring into formation inversely during the time of upsetting packer and hoisting up string when the operation of swabbing outflow being finished which causes the second pollution to reservoir influencing accuracy and liability of tested geology data.

Under the impressed DC electric field, the electronic double layer thickness affects absolute permeability of the low permeable reservoir greatly and absolute permeability of high permeable reservoir diminutively.

The low permeable resrevoir of Bonan Oil Field is a typical low permeable reservoir in Shengli Oil Field.

Micro-fractures distribution in extremely lower permeable sandstone reservoirs of Yanchang Formation and its geologic significance, Ordos Basin, Northwest China;