Applications of Polyacrylamide in the Petroleum Industry:

Polyacrylamide is a core chemical in oil extraction. Weilangpu’s petroleum-specific polyacrylamide, with its thickening, flocculating, and rheology-modifying properties, is used throughout key stages of drilling, oil production, and profile control. Primarily anionic (such as partially hydrolyzed polyacrylamide HPAM), it is suitable for complex geological and technological requirements.

Core Application Scenarios:

Drilling Engineering: As a thickener, an addition of 0.1%-0.3% can increase drilling fluid viscosity by 30%-50%, forming a three-dimensional network structure to carry cuttings. It also acts as a shale inhibitor and filtration reducer, reducing wellbore spalling and water penetration, and lowering the risk of well collapse.

Tertiary Oil Recovery: Injected into the formation as an oil displacement agent, it can increase the viscosity of the injected fluid and improve the sweep efficiency. Each ton of polymer can increase crude oil production by 120-150 tons, significantly improving recovery rate. Ultra-high molecular weight models can also overcome the “finding phenomenon,” making them suitable for deep formation extraction.

Fracturing and Profile Control: Thickens fracturing fluids, enhancing proppant retention to optimize fracture performance; generates gel through cross-linking reactions, sealing high-water-cut formations, improving water absorption profiles, and reducing well water production.

Key Advantages:

High Compatibility: Modified products withstand high temperatures and pressures, maintaining stable performance even in saturated brine formations, with a 40% reduction in filtration loss.

Improved Quality and Reduced Costs: Extends drill bit life by 30%, reduces overall drilling costs by 18%, and is more environmentally friendly than traditional additives, with biodegradability meeting international standards.

Multi-Functional: Also provides drag reduction and scale prevention, simplifying workflows and adapting to automated injection systems.

Core Parameter Reference:

Type: Primarily anionic, modified or reverse emulsion types are used for special scenarios.

Molecular Weight: Standard models for drilling; ultra-high molecular weight products are preferred for tertiary oil recovery.

Degree of Hydrolysis: 20%-30% hydrolysis is preferred for drilling, suitable for most formation requirements.