Research on Technologies of Enhanced Oil Recovery in Jianyucha Oilfield

Jianyucha oilfield is a typical low permeability reservoir, after more than five years waterflooding development, reservoir void structure and permeability ratio have undergone great changes. Contradictions of inner layer and between layers further aggravated, forming high permeability zone and seepage advantage channel, water flooding condition and remaining oil distribution are becoming more and more complex, the difficulty of stable oil field production is increasing, comprehensive water cut is about 83%, which not only can greatly affect the recovery degree of crude oil, but also can increase oil production cost. In order to improve water flooding recovery, large pore path and high permeability layer must be blocked. The profile technology as an effective means of reducing water cut and enhanced oil recovery has become the key technology for Jianyucha oilfield sustainable development.