WANA (Aug 19) – A team of Iranian researchers has designed advanced smart nanocomposite hydrogels capable of controlling sand production in oil reservoirs—one of the industry’s most persistent challenges. The breakthrough, achieved by researchers at the Institute of Chemistry and Chemical Engineering of Iran in collaboration with a knowledge-based company, promises to reduce operational costs, minimize environmental damage, and improve oil recovery efficiency.

 

Addressing a Costly Industry Challenge

Sand production—the intrusion of fine solid particles into reservoir fluids during oil extraction—has long plagued the oil industry. It causes severe erosion of pipelines and equipment, well blockages, reduced production rates, and costly separation processes, while also posing environmental risks. Globally, the phenomenon costs the oil sector millions of dollars annually.

 

Smart Hydrogel Innovation

The Iranian research team, led by Dr. Mahsa Baghban Salehi and supported by company researchers Farzin Saghandeli, Ali-Asghar Nozaeem, and Hossein Pahlevani, developed an innovative nanocomposite hydrogel solution. Leveraging nanotechnology and polymer science, the material not only suppresses sand movement but also reduces unwanted water production while enhancing oil output.

 

These “smart” hydrogels exhibit dual behavior: they swell in water-rich environments and shrink in oil-rich environments. This responsive mechanism enables them to limit excess water while improving hydrocarbon flow. Additionally, by altering the zeta potential of sand particles, the hydrogels promote cohesion between grains, preventing free movement without damaging the reservoir formation.

 

Superior Mechanical and Environmental Performance

The nanocomposite’s three-dimensional structure, reinforced with nanoparticles, provides high thermal stability and mechanical strength, making it suitable for harsh reservoir conditions. Its injectability, viscosity balance, and adhesion to sand surfaces ensure optimal reservoir penetration and long-lasting performance. Unlike costly and sometimes destructive conventional methods, this hydrogel offers a sustainable and non-damaging alternative.

 

Strategic Impact for Iran’s Oil Sector

The technology is expected to benefit both the National Iranian Oil Company (NIOC), particularly in sandstone reservoirs, and private sector operators. With the ability to tailor formulations for specific reservoir conditions and the added advantage of self-healing under extreme conditions, the hydrogel provides a competitive edge in oilfield management.

 

Researchers emphasize that beyond cost savings, the innovation advances Iran’s pursuit of sustainable development by reducing environmental harm. Domestic commercialization would also lower reliance on foreign technologies and strengthen Iran’s position in the global market for advanced oilfield solutions.

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