IMPROVING CEMENTING QUALITY WITH VISCOUS SLURRY

The second infill and adjust development have started in Daqing oiifield.The payzones are of low permeability and thin,which overlap with high Permeability and water the in logitudinal section.Be cause the payzones characters are poor,the production can’t work untill the frcaturing operation have been done.It is necessary to enssure the payzones are’nt interconnected with high water-bearing interval production efficiency,so the good cementing quality is important.It has been shown that viscous slurry can improve cementing quality by 15%-30%,and increase Perforating depth by l0%,in the laboratory examination and the field application.This technology’s application will be useful to the develop ment and improving production efficiency for the thin poyzones of later development.