Hydrophobically modified poly(ethylene glycol) as reactive clays inhibitor additive in water-based drilling fluids

2010 ◽  
Vol 117 (2) ◽  
pp. 857-864 ◽  
Author(s):  
Carlos Eduardo Carvalhido de Souza ◽  
Alexandre Souza Lima ◽  
Regina Sandra Veiga Nascimento
Keyword(s):  
Ethylene Glycol ◽  
Drilling Fluids ◽  
Poly Ethylene Glycol ◽  
Hydrophobically Modified ◽  
Water Based ◽  
Poly Ethylene

scholarly journals Tribological performance of various metal-doped carbon dots as water-based lubricant additives and their potential application as additives of poly(ethylene glycol)

Friction ◽  
2021 ◽  
Author(s):  
Weiwei Tang ◽  
Xuejun Zhu ◽  
Yufeng Li
Keyword(s):  
Ethylene Glycol ◽  
Tribological Properties ◽  
Carbon Dots ◽  
Lubricant Additives ◽  
Poly Ethylene Glycol ◽  
Wear Properties ◽  
Water Based ◽  
Friction Reducing ◽  
Poly Ethylene ◽  
Metal Doped

AbstractAdvances in nano-lubricant additives are vital to the pursuit of energy efficiency and sustainable development. Carbon dots (CDs) have been widely investigated in the domain of lubricant additives owing to their extraordinary tribological properties, in particular, their friction-reducing and anti-wear properties. Metal-doped CDs are a new type of CDs, and their friction-reducing and anti-wear properties are attracting increasing attention. Therefore, a series of CDs doped with various divalent metal ions have been successfully synthesized via one-pot pyrolysis. The tribological properties of the synthesized CDs as water-based lubricant additives are in the following order: Zn-CDs > Cu-CDs ≫ Mg-CDs > Fe-CDs > U-CDs. Specifically, adding 1.0 wt% of Zn-CDs into water-based lubricant results in 62.5% friction and 81.8% wear reduction. Meanwhile, the load-carrying capacity of the water-based lubricant increases from 120 N to at least 500 N. Zn-CDs as an additive have long service life. Additionally, anion-tuned Zn-CDs fabricated via anion exchange exhibit promise as lubricant additives for poly(ethylene glycol). Based on the results of wear scar surface analyses, it is discovered that tribochemical films, primarily composed of iron oxides, nitrides, metal carbonates, zinc oxides, zinc carbonates, organic compounds, and embedded carbon cores, formed on the rubbing surfaces with a thickness of approximately 270 nm when Zn-CDs are used as additives. This film combined with the “ball-bearing” and third-particle effects of Zn-CDs contributed to excellent lubrication performance.

scholarly journals A Computer Color-Matching Study of Reverse Micellar Dyeing of Wool with Reactive Dyes

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 132
Author(s):  
Yanming Wang ◽  
Yiu-lun Tang ◽  
Cheng-hao Lee ◽  
Chi-Wai Kan
Keyword(s):  
Ethylene Glycol ◽  
Reactive Dyes ◽  
Color Matching ◽  
Poly Ethylene Glycol ◽  
Wool Fabrics ◽  
Calibration Curves ◽  
Color Yield ◽  
Water Based ◽  
Poly Ethylene ◽  
Reverse Micellar

Computer color-matching (CCM) and the levelness of poly(ethylene glycol)-based reverse-micellar dyed wool fabrics in octane and nonane were investigated and compared with a conventional water-based dyeing system. Reflectance curves and calibration curves exhibited no chromatic change and maintained high linearity in both dyeing systems. The linearity of water-dyed calibration curves was slightly higher than that of the reverse-micellar dyed curves. The color yield, in term of K/Ssum values, of solvent-dyed samples was found to be generally higher than that of water-based dyed samples at various calibrated dye concentrations. The concentrations predicted by CCM were close to the theoretical concentrations for both dyeing methods. This indicates that octane- and nonane-assisted reverse-micellar dyeing of wool is able to generate color recipes comparable to the conventional water-based dyeing system. The solvent-dyed samples, measured by the relative unlevelness indices (RUI), exhibit good-to-excellent levelness, which is highly comparable with the water-dyed samples.

Evaluation and application of poly(ethylene glycol) as lubricant in water‐based drilling fluid for horizontal well in Sulige Gas Field

2020 ◽  
Vol 70 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Xiongxiong Liu ◽  
Long Gao ◽  
Qingchen Wang ◽  
Xuefan Gu ◽  
Weichao Du ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Horizontal Well ◽  
Drilling Fluid ◽  
Poly Ethylene Glycol ◽  
Gas Field ◽  
Water Based ◽  
Poly Ethylene

Hydrophobically Modified Biodegradable Poly(ethylene glycol) Copolymers that Form Temperature-Responsive Nanogels

Langmuir ◽  
2009 ◽  
Vol 25 (17) ◽  
pp. 9734-9740 ◽  
Author(s):  
Koji Nagahama ◽  
Mihoko Hashizume ◽  
Hidetoshi Yamamoto ◽  
Tatsuro Ouchi ◽  
Yuichi Ohya
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Temperature Responsive ◽  
Hydrophobically Modified ◽  
Biodegradable Poly ◽  
Poly Ethylene

scholarly journals Association of hydrophobically-modified poly(ethylene glycol) with fusogenic liposomes

2003 ◽  
Vol 1616 (2) ◽  
pp. 184-195 ◽  
Author(s):  
Debra T. Auguste ◽  
Robert K. Prud'homme ◽  
Patrick L. Ahl ◽  
Paul Meers ◽  
Joachim Kohn
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Hydrophobically Modified ◽  
Poly Ethylene

Gels of Catanionic Vesicles and Hydrophobically Modified Poly(ethylene glycol)

2006 ◽  
Vol 27 (1) ◽  
pp. 83-90 ◽  
Author(s):  
Bruno Medronho ◽  
Filipe Antunes ◽  
Björn Lindman ◽  
Maria Miguel
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Hydrophobically Modified ◽  
Catanionic Vesicles ◽  
Poly Ethylene

scholarly journals Mechanism of shales stabilization by hydrophobized poly(ethylene glycol)/K+ in water-base drilling fluids

2021 ◽  
Vol 48 (3) ◽  
pp. 721-731
Author(s):  
Santiago VILLABONA-ESTUPIÑAN ◽  
de ALMEIDA RODRIGUES Jorge ◽  
Carolina Ferreira de ABREU ◽  
Regina Sandra Veiga NASCIMENTO
Keyword(s):  
Ethylene Glycol ◽  
Drilling Fluids ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
Water Base
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