Polyacrylamide is often used in oilfield drilling as a profile control and water plugging agent, oil displacement agent, drilling fluid viscosity enhancer, etc., which can improve the efficiency of crude oil collection and purify oilfield wastewater. Therefore, polyacrylamide has gained unanimous recognition from customers in oil extraction and gradually become an essential agent for oil field drilling. So what role can polyacrylamide play in oilfield drilling?
1. Polyacrylamide is often used as a flocculant in the water purification industry market, therefore it has good flocculation properties. During the drilling process, the mud and rock debris quickly coagulate to form larger flocs, which settle at the bottom of the well for easy treatment.
2. Polyacrylamide flocculant has good adhesion and fluidity, which can effectively act as a lubricant for drill bits and drill rods during drilling, while reducing friction and lowering resistance. This can improve drilling speed and also reduce drilling costs.
3. Polyacrylamide has excellent adsorption properties, gel protection, and air blocking effects, which can protect the sol particles in drilling fluids, thereby avoiding the expansion of clay water caused by filtrate entering the surface layer and preventing the collapse of wellbore walls.
4. In the process of drilling, different geological structures will also lead to leakage. At this time, the use of polyacrylamide gel can effectively plug the leakage of fractures and loose rock formations.
