How polyacrylamide (PAM) is used in sewage treatment?

In sewage treatment, using polyacrylamide (PAM) can increase the recycling rate of water reuse. In petroleum extraction, polyacrylamide (PAM) is mainly used in drilling mud materials and for enhancing oil recovery, widely applied in drilling, well completion, cementing, fracturing, enhanced recovery, and other oil field extraction operations.

What is polyacrylamide (PAM)?

Polyacrylamide (PAM) is not only a high-performance flocculants, but also because of the high viscosity of aqueous solution, but also a very good thickener. Due to its thickening, flocculation and regulation of rheological properties it can be used as a drilling fluid, fracturing fluid, and polymer flooding in the exploitation of oil extraction.

Which polymers are used in oil fields?

Polymers, such as partially hydrolyzed polyacrylamide (HPAM), are widely used in oil fields to enhance or improve the recovery of crude oil from the reservoirs. It works by increasing the viscosity of the injected water, thus improving its mobility and oil recovery.

Why is polyacrylamide widely used in oilfields?

Fracturing process is an important stimulation measure for the development of dense layer in oilfield. Polyacrylamide is widely used because of its high viscosity, low friction resistance, good ability of sand suspension, small filtration loss, good viscosity stability, low residue, wide supply and easy preparation and low cost.

How does polyacrylamide (PAM) reduce drag?

Polyacrylamide (PAM) can effectively reduce the frictional resistance of fluids, and adding a small amount of polyacrylamide (PAM) to water can reduce drag by 50-80%. Polyacrylamide (PAM) has thickening effects under both neutral and acidic conditions, and when the pH value is above 10, polyacrylamide (PAM) is easily hydrolyzed.

What is the use of polyacrylamide in tertiary oil recovery?

2.Polyacrylamide for oil flooding. In the tertiary oil recovery (EOR) with enhanced oil recovery, polyacrylamide can be used to adjust the flowability of injected water, increase the viscosity of the driving fluid, improve the efficiency of water flooding, reduce the permeability of water in the ground, To move forward.