Microbial welan gum production, chemistry and applications: A review

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 141640 - 141640

Опубликована: Март 1, 2025

Язык: Английский

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A zwitterionic polymer filtrate reducer with enhanced anti-polyelectrolyte effect for high-temperature and high-salinity conditions

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161087 - 161087

Опубликована: Фев. 1, 2025

Язык: Английский

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

Polymers, Год журнала: 2025, Номер 17(6), С. 792 - 792

Опубликована: Март 17, 2025

In the process of oil extraction, drilling fluid, as a critical operational directly impacts efficiency and safety. However, under high-temperature high-pressure conditions, fluid tends to experience loss, which not only causes environmental pollution but also increases costs challenges. To address this issue, study aimed develop novel high-temperature-resistant environmentally friendly polymer loss additive—EnSipoly-FL—designed enhance thermal stability performance fluids. The copolymerization acrylamide (AM), N-vinylpyrrolidone (NVP), acrylic acid (AA), vinyltrimethoxysilane (A-171) was selected ensure chemical additive. synthesis including initiators, emulsifiers, reaction temperature, time, were optimized in experiments. structure target product confirmed by infrared spectroscopy nuclear magnetic resonance analysis. Thermogravimetric analysis particle size demonstrated that possessed excellent appropriate physical dimensions. Environmental impact assessments indicated EnSipoly-FL exhibited good biodegradability low toxicity, meeting protection standards. Comprehensive tests showed microspheres exceptional reduction capabilities friendliness applications. This makes it promising candidate for widespread use industry, advancing green development technology.

Язык: Английский

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The high-temperature and high-salinity resistance hydrophobic association zwitterionic filtrate loss reducer for water-based drilling fluids

Petroleum Science, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

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A Study on a Novel Hydrophobic Associative Polymer Thickener for High‐Salinity Water in Hydraulic Fracturing

ChemistrySelect, Год журнала: 2025, Номер 10(20)

Опубликована: Май 1, 2025

Abstract The reuse of flowback fluid is a critical strategy for mitigating environmental pollution and reducing the costs associated with hydraulic fracturing technology in oil fields. However, high‐salinity formations, electrostatic shielding effect caused by significantly reduces thickening efficiency polyacrylamide‐based thickeners, thereby hindering fluid. In this study, we synthesized novel, high‐salinity‐resistant, hydrophobic associative polymer (CHFR) incorporating monomer octadecyl polyoxyethylene methacrylate (N1810) into acrylamide (AM), acrylic acid (AA), 2‐acrylamido‐2‐methylpropanesulfonic (AMPS), methacryloxyethyl trimethylammonium chloride (DMC). FT‐IR 1 H NMR confirmed successful synthesis CHFR. demonstrated viscosity retention 53% 20,000 mg/L NaCl solution 46% CaCl 2 solution, exhibiting salt tolerance concentrations that were 10 30 times higher than those conventional PAM/AMPS. At 100 °C shear rate s −1 , CHFR retained 78% its viscosity. interaction process between can be divided four phases: initial period, rapid decline slow stable period. exhibits excellent resistance, providing new type thickener

Язык: Английский

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Polymers marry with carbon nanospheres: A promising strategy to develop high-performance filtrate reducer

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 705, С. 135688 - 135688

Опубликована: Ноя. 6, 2024

Язык: Английский

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Study of three-dimensional reticulated filtration control agent formed by condensation of A-151 in long-lasting, ultra-high-temperature-resistant, salt-resistant, and filtration-loss-reducing

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 158047 - 158047

Опубликована: Ноя. 1, 2024

Язык: Английский

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