Synthesis and Evaluation of High-Temperature-Resistant and Environmentally Friendly Polymer Filter Loss Additives

Area of Science:

• Polymer Science
• Petroleum Engineering
• Environmental Science

Background:

• Drilling fluids are critical for oil extraction efficiency and safety.
• High-temperature and high-pressure conditions cause drilling fluid loss, leading to pollution and increased costs.
• Existing fluid loss additives often lack sufficient thermal stability and environmental compatibility.

Purpose of the Study:

• To develop a novel, high-temperature-resistant, and environmentally friendly polymer fluid loss additive named EnSipoly-FL.
• To enhance the thermal stability and environmental performance of drilling fluids for oil extraction.
• To address the challenges of fluid loss in demanding drilling conditions.

Main Methods:

• Copolymerization of acrylamide (AM), N-vinylpyrrolidone (NVP), acrylic acid (AA), and vinyltrimethoxysilane (A-171).
• Optimization of synthesis conditions: initiators, emulsifiers, reaction temperature, and time.
• Characterization using infrared spectroscopy, nuclear magnetic resonance, thermogravimetric analysis, and particle size analysis.
• Environmental impact assessment including biodegradability and toxicity tests.
• Performance evaluation in high-temperature and high-pressure drilling fluid applications.

Main Results:

• The synthesized polymer, EnSipoly-FL, demonstrated excellent thermal stability and suitable physical dimensions.
• Environmental assessments confirmed good biodegradability and low toxicity, meeting environmental standards.
• Performance tests showed exceptional fluid loss reduction capabilities in drilling fluids.
• The additive maintained effectiveness under high-temperature and high-pressure conditions.

Conclusions:

• EnSipoly-FL is a highly effective and environmentally friendly fluid loss additive for oil drilling.
• The polymer's properties make it suitable for high-temperature and high-pressure drilling fluid applications.
• This development supports the advancement of green drilling fluid technology and sustainable oil extraction practices.