Study on influencing factors of profile control effect of horizontal well development reservoir with edge water
Bohai Q Oilfield is developed by horizontal wells,and the edge water invasion becomes the main reason for the low recovery of the oilfield.Combined physical simulation with numerical simulation,the authors studied the factors that influence the profile control effects of horizontal well development reservoirs with edge water.The results show that:1)The enhanced oil recovery(EOR)first increases and then decreases after profile modification with the decrease of the edge water distance,and the profile modification effect is best when the edge water distance is 550 m;2)For the horizontal well development oil reservoirs with edge water,the earlier the timing of profile control is,the higher the corresponding oil recovery value and the more significant the effect;3)The edge water energy has a significant impact on the profile control effect of horizontal wells in edge water reservoirs.As the energy of edge water increases,the profile control effect gradually deteriorates.The edge water energy significantly impacts the profile control effect when it is greater than ten times.The edge water energy of most blocks in Bohai Q Oilfield is less than six times,and the current water content is 52.4％.Therefore,on-site implementation of profile control and flooding should be carried out as soon as possible.This research achievement provides technical guidance for the subsequent decision-making of stabilizing oil and controlling water in the horizontal well development reservoirs with edge water.
edge wateredge water distanceedge water energytiming of profile controlphysical simulationnumerical simulation
万方数据
维普
