A STUDY ON POLYACRYLAMIDE COATING TECHNOLOGY

A chemical coating method by using the polyacrylamide power is recommended for dustless polyacrylamide production process.The main constituent of coating agent TC 06 with chemical construction of R_O(RO) nH is synthesized.The CT 06 is mixed with polyacrylamide power uniformly to form a chemical coating film or adsorption layer, which has the property of masking effect to eliminate or reduce the electrostatic effect on the polyacrylamide power surface.Both the laboratory and field tests shown that the coated polyacrylamide creates a clean environment and does not cause any pollution.Also, it simplifies the polyacrylamide process without separating the superfine grains.The new coated polyacrylamide still has the inherent performance of the polyacrylamide, and enhances the shear resistance, the salt resistance, as well as the heat resistance.So, it is more applicable EOR.This coating process is simple and easy to use compared to the original process, and does not necessary to change the process or equipment. It has been successful applied in Daqing Oilfield.