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Field test of profile modification on produced sludge in Xingbei Oilfield

BAO Ya-chen1,NIU Jing-gang1,2,XU Dian-ping1,2,LU Xiang-guo2 (1.No.4 Oil Production Company of Daqing Oilfield Company Ltd., Daqing 163511,China;2.Key Laboratory of EOR in Ministry of Education,Daqing Petroleum Institute,Daqing 163318,China)  
Aiming at produced sludge innocuitize treatment and actual profile modification requirements in Xingshugang Oilfield,through lab method,component and structural features of oilfield's produced sludge are tested and profile modification mechanism of sludge is analyzed.Well and layer selecting method adopting sludge profile modification and operation technique are provided,developing sludge profile modification field test.The results show that,sludge recycled to reservoir can improve fluid entry profile for injection water well and expand sweep volume of subsequent injection fluid,which can lead oil wells of well array to increase oil obviously.It provides a simple and effective way for oilfield produced sludge's innocuity treatment.
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