Product Overview

HPAM (Partially Hydrolyzed Polyacrylamide) is widely recognized as the most effective polymer for chemical EOR in sandstone reservoirs. Its long-chain molecular structure provides a strong thickening effect in injection water, enabling superior mobility control and enhanced displacement efficiency.

Why Sandstone Reservoirs Benefit from HPAM

• Sandstone formations typically support excellent polymer propagation.
• HPAM molecules move uniformly through pore networks without excessive retention.
• Improves vertical and areal sweep efficiency in layered or heterogeneous sandstone.
• Reduces viscous fingering and early water breakthrough.
• Cost-effective chemical upgrade for aging sandstone reservoirs.

EOR Applications in Sandstone

• Primary polymer flooding in medium- to high-permeability sandstone fields.
• Mobility control in brownfields with high water cut.
• Conformance improvement in stratified or channelized deposits.
• Low-salinity and moderately saline polymer flooding designs.
• Polymer-assisted waterflood redevelopment programs.

Performance Features

Engineered for the geological and chemical conditions unique to sandstone formations:

• High molecular weight for strong viscosity at low dosages.
• Predictable propagation in sandstone with minimal adsorption.
• Stable hydration and rheology in typical injection waters.
• Enhanced mobility ratio for improved sweep efficiency.
• Low degradation under controlled shear handling.

Technical Specifications (Typical)

• Evaluate sandstone permeability and heterogeneity before polymer selection.
• Perform core floods to confirm polymer retention and propagation behavior.
• Test salinity and hardness effects on HPAM viscosity.
• Design injection concentration and slug size based on reservoir modeling.
• Monitor pressure response, injectivity, and incremental oil trends.