Application of Polyacrylamide in Oil Field

Polyacrylamide can be dissolved in water in any proportion, and the aqueous solution is a uniform and transparent liquid. What are the applications of polyacrylamide in oil fields?

1. Polyacrylamide is used as a drilling fluid additive. Drilling fluid is the performance modifier of drilling fluid in oil extraction. Function, function, polyacrylamide, in promoting the adjustment of rheological properties of drilling fluid, carrying cuttings, lubricating drill bits and drill bits, in addition, it can greatly reduce pipe sticking accidents, reduce equipment wear, prevent leakage and collapse, and make the hole diameter regular .

2. Can be used as polymer flooding. Polymer flooding is to add a certain amount of polymer polyacrylamide to the injected water to improve the viscosity of the injected water and increase the oil-water mobility ratio. Due to the adsorption of polyacrylamide molecules and trapping, the permeability of high and medium permeability layers or high and water-flooded layers decreases, the impermeability of injected water increases, and the water absorption of low-permeability layers or low and non-water-flooded layers Decrease and increase the number of layers.

3. It can also be used as a water blocking agent. Polyacrylamide PAM chemical water blocking agent has a selective effect on oil-water penetration, reduces oil penetration and water penetration, and can be used without cross-linking. Aluminum, chromate, and zirconium salts can also be used to crosslink the gel, and some resins can be added to form an interpenetrating polymer network, making it more temperature resistant. Polyacrylamide can also be used to adjust the formation water absorption curve and block large pores.

4. Used as a fracturing fluid additive. Fracturing technology is an important stimulation measure in the development of tight reservoirs in oilfields. The polyacrylamide action will open up stone channels to allow oil to flow through.
Polyacrylamide can effectively reduce the frictional resistance of the fluid. Adding a small amount of PAM to water can reduce the resistance by 50-80%.