APPLICATION OF SWELLING PERLITE CEMENT SLURRY IN CHANGQING OILFIELD

To control casing corrosions caused by interlayer water and expand oil well life, and solve the technical problems of easy lost circulation and long isolation section, a new cementing system needs to be developed. Based on the analyzing of physical characteristics and chemical compositions of the swelling perlite, and a lot of laboratory tests, a lightweight perlite cement slurry system was developed. Field applications showed its stable performances, high compression strength, low cost and wide application prospect.