USE OF SPECIAL CEMENTING ADDITIVES CEMENTING WITH MINERAL WATER IN TAZHONG OILFIELD

There is a lack of fresh water in Tazhong region and underground water is mineral water which can not match cementing additives for fresh water. A series of cementing additives like filtration control, retarding, dispersion and defoaming agents for cernenting with mineral water were studied and fabricated. The lab tests data showed that all parameters as filtration, free water content, thickening time, fluidity and strength after setup can meet the required standards. Among all the cementing operations done with these chemicals, the up-standard ratlo was 100%, sdper quality ratlo was 70%. All these chemicals can be used for fresh water and are with raised effect.