Anionic Polyacrylamide:
Anionic PAM is mainly used in minerals selection, metallurgy, coal washing, food, steel, spinning and papermaking industry which involves separation of solid-liquid and waste water treatment. Anionic PAM can also be used for oil well and oil extraction in oil industry, and retention aids and intensifier in papermaking industry.
Cationic Polyacrylamide:
Cationic polyacrylamide is mainly used as flocculants and dewatering reagents for industry waste water and sewage; retention aids and intensifier in paper making industry; waste water treatment in pharmaceutical, leather making, printing and dyeing industry waste water treatment, and organizer in textile industry.
Non-ionic Polyacrylamide:
Nonionic polyacrylamide is mainly used as flocculants with high selectivity in oil well fluid,and acidic waste water treatment.
| Items |
Anionic PAM |
Cationic PAM |
Non-Ionic PAM |
| Appearance |
White Powder |
White Powder |
White Powder |
| Molecular weight |
2-22 million |
2-12 million |
2-10 million |
| Degree of hydrolysis |
25%-40% |
- |
≤5% |
| Cationic degree |
- |
10%-80% |
- |
| Solid content |
≥88.5% |
≥88.5% |
≥88.5% |
| Residual unit |
≤0.025 |
≤0.025 |
≤0.025 |
Applications in Oil Recovery
Polyacrylamide is a kind of multifunctional oilfield chemical treatment agent, which is widely used in drilling, cementing, completion, workover, fracturing, acidizing, water injection, water plugging and profile control, and tertiary oil recovery operations in oil production. It is in the fields of drilling, water plugging and profile control and tertiary oil recovery. Polyacrylamide aqueous solution has high viscosity, good thickening, flocculation and rheological adjustment, and is used as oil displacement agent and drilling mud conditioner in oil production. In the middle and late stages of oil exploitation, in order to enhance oil recovery, my country currently mainly promotes polymer flooding and ASP flooding technologies. By injecting polyacrylamide aqueous solution, the oil-water flow rate ratio is improved to increase the crude oil content in the produced product. Adding polyacrylamide in tertiary oil recovery can increase oil displacement capacity, avoid breakdown of oil layers, and increase oil bed recovery yield. China's petroleum industry is the largest user of polyacrylamide. The scientific and technological progress of polyacrylamide has promoted the development of China's petroleum industry, and the demand of the petroleum industry has accelerated the pace of scientific and technological innovation of polyacrylamide and the development of the industry.
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