Development of new profile control agent for oily sludge

In order to solve the problem on oily sludge settlement,a kind of oily plugging agent,whose compressive strength for fostering 3 d is above 1 MPa by compressive strength test with oily sludge as main agent and rare earth powder as curing agent,is developed on basis of component analysis and diameter determination of oily sludge in Xianhe oil extracton.The profile control agent is of higher blocking strength with over 99% rock core blocking rate and 8 MPa above breakthrough pressure.Erosion-resistant experiment shows that,both penetration and blocking rate are without big change after being eroded 100 doubles by 200℃ steam,which demonstrates the profile control agent has relatively strong high temperature-resistance performance.Profile control agent of oily sludge developed can be used in profile control of water injection wells and channeling plugging of huff and puff wells,which is expected to have good results in field application.