Research and Application on Plugging Ability of Supramolecular Microsphere Regulating and Flooding System
With the water flooding of Q oilfield in Bohai Sea entering the middle and high water cut development stage,the problems such as the dominant flow channel between injection-production wells and the continuous decline of oil well production become more and more prominent.The combination of"nano-microspheres + supramolecular microspheres"particle system with different sizes was carried out to control flooding.The experimental results showed that the combination of nano-microspheres and supramolecular microspheres could effectively plug the high permeability layer,start the middle and low permeability layer,and improve the water flooding recovery.The field application results of Q oilfield show that the injection is good,and the oil increase effect of precipitation is obvious.The maximum daily oil increase of the well group is 45.3 m3,the maximum daily precipitation is 2.4%,and the accumulative oil increase is 18000 m3,which provides reference and guidance for the development of displacement control technology of similar oilfield in Bohai Sea.
supramolecular microspheresnanometer microspherecombined modulation driveplugging ability research
万方数据
维普
