Numerical simulation research on parameter optimization of CO_2 miscible flooding of Gao 89-1 Block in Zhenglizhuang Oilfield;

Research of optimum screening method for gas tracers in miscible flooding;

Experimental studies on asphaltene precipitation with CO_2 miscible flooding in Fan 124 block of Daluhu Oilfield;

EOR technology using CO2 contains two ways-miscible and immiscible displacement.

Experimental study of optimized steam injection parameters for immiscible displacement in Wenxi3 Block;

Experiment research of water alternating gas immiscible displacement EOR technology in fractured low permeability reservoir

As to low permeability oilfield, Tuha oilfield systematically tackles the key problem of the field applied techniques on enhanced oil recovery by gas injection, sets up the field test base of gas injection miscible displacement in Pubei oilfield and the pilot area of gas injection immiscible displacement in block Wen 5, good effect has been taken.

Microcosmic experiment research on CO_2 immiscible drive;

The CO_2 immiscible drive mechanism,injection mode and injection volume were studied by using the high-temperature high-pressure experimental system,and the recovery efficiency,injection pressure,gas consumption and CO_2 recycling usage were analyzed.

Long core physical simulation for CO_2 miscible displacement;

Mechanism study on miscible displacement and its application prospect.;

Miscible and immiscible displacement studies are conducted on different horizons, injection rates, injection time and injection modes by using n.