Oilfield Field

For the well drilling, drilling fluid is applied to reduce the abrasion of equipment, reduce jamming of drilling tools, and prevent leakage and collapse. Polyacrylamide is added to the drilling fluid to adjust the rheological property of the drilling fluid, so as to carry lithic fragments, lubricate drill, and facilitate drilling. Polymer flooding technology needs high molecular weight polyacrylamide to increase the viscosity of infusing water. The oil-gas mobility ratio is improved. Then the water will replace the crude oil and drive it out, which improves the oil yield. In the fracturing process, polyacrylamide is added to the fracturing fluid due to its high viscosity, low frictional resistance, good sand-carrying ability, easy to prepare and low cost.