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Description:
Polyacrylamide for oil displacement (abbreviated as PAM) is a high-efficiency oilfield chemical agent specifically designed for enhanced oil recovery. This product appears as white crystalline powder with high water solubility and excellent rheological properties. Its molecular weight typically ranges between 16 and 25 million, demonstrating extremely high viscoelasticity and thickening capability. PAM for oil displacement is widely used in water flooding and polymer flooding processes. By adjusting the mobility ratio of injected water and expanding the sweep volume, it effectively enhances crude oil recovery rates.
Specifications:
|
Item |
Index |
|
Appearance |
White crystalline powder |
|
Molecular Weight |
16-25 million |
|
Filtration Ratio |
≤ 2.0 |
|
Intrinsic Viscosity |
≥2000 - 2400 ml/g |
|
Apparent Viscosity |
10~14mPa·s |
Performance and Applications:
1. PAM for oil displacement exhibits exceptional thickening performance. Its long molecular chain structure can rapidly expand in water to form a spatial network structure, significantly increasing aqueous phase viscosity, reducing water-oil mobility ratio, and improving macroscopic sweep efficiency. This effectively displaces previously unmoved crude oil from formation pores.
2. This polymer demonstrates good shear stability and thermal stability, maintaining molecular structural integrity in underground high-temperature and high-salinity environments. It can effectively sustain solution viscosity over extended periods, making it suitable for enhanced oil recovery operations under various complex reservoir conditions.
3. PAM solution shows excellent flow control characteristics, capable of adjusting permeability profiles in porous media, effectively plugging high-permeability channels, and redirecting displacing fluids to low-permeability oil-bearing zones. This improves microscopic displacement efficiency and is widely used in technologies such as polymer flooding, profile control, water shutoff, and combination flooding.
Advantages:
1. Significant effect on enhancing crude oil recovery rate with high input-output ratio and obvious economic benefits.
2. Excellent product compatibility with good adaptability to formation water and injection water. It can be combined with additives such as surfactants and alkalis to create synergistic effects.
3. Strong environmental adaptability with excellent temperature resistance and salt tolerance, meeting application requirements under most reservoir conditions. The technology is mature and reliable.