Considerable diversity of petrophysical properties of the lower Es2 reservoir in Wen33 fault-block,as well as frequentative adjustments with different stresses in its history,result in disequilibrium of producing reserves,complicated oil-water relationship,remaining oil divergently distributing in various types,and difficulty in cognition increasing yearby-year.

Based on the reservoir characteristics of wendong sanzhong reservoir, researched on fin.

An economic analysis of reservoir natural production in middle and later stages;

Factors influencing viscosity of association polymer solution of reservoirs in Bohai Oilfield;

Vectorial well arrangement in anisotropic reservoirs;