141321-68-8Relevant articles and documents
Alkyl Glycine Surfactant: An Efficient High-Temperature Resistant and Biodegradable Foaming Agent for Colloidal Gas Aphron (CGA) Drilling Fluid
Zhu, Wenxi,Zheng, Xiuhua
, p. 1305 - 1318 (2021/12/06)
Abstract: Colloidal Gas Aphron (CGA) drilling fluid is one of the most promisingtechniques in underbalanced drilling with excellent plugging and reservoirprotection functions. Due to the limitation of poor thermal stability ofcommercial foaming agents used in oilfields, the research on high-temperatureresistant CGA drilling fluid is still a challenge. In this study, abiodegradable glycine foaming agent AGS-12 was synthesized via a one-stepmethod. The surface activity, foaming performance (25–150°C) of AGS-12 and thehigh temperature performance of AGS-12 based CGA drilling fluid (120–150°C) werestudied. All the results provide a basis for the potential application of AGS-12as an eco-friendly foaming agent in high-temperature CGA drilling fluids: 1) Theproduct AGS-12 with 87% conversion rate was synthesized successfully by one-stepmethod, which can be verified by FT-IR. TGA analysis suggested that AGS-12 hadgood thermal stability within 315°C. Moreover, AGS-12 is easily biodegradableand fully meets the first level discharge standard of petrochemical industrypollutants. 2) AGS-12 can reduce the surface tension of solvent water from 72.38to 28.44 mN/m. Analysis of fundamental surface activity parameters illustratesthe higher surface activity of AGS-12, compared with a variety of amino acidsurfactants. 3) Waring-Blender test showed that foams generated by 3% AGS-12always have higher half-life, foam quality and lower drainage speed than thefoaming agents available on market within 150°C. 4) At 120/140/150°C, aphronswith diameter of 10–150 μm have been successfully generated in CGA drillingfluid by using AGS-12 as foaming agent. Rheological and filtration testssuggested that AGS-12 based CGA drilling fluid is a high-performance drillingfluid with strong shear thinning behavior, high viscosity, and low filtrationinvasion. [Figure not available: see fulltext.].
STERILE/ANTIBACTERIAL COMPOSITION
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Paragraph 0428; 0430, (2017/01/31)
DISCLOSED IS A STERILE/ANTIBACTERIAL COMPOSITION, A LIQUID DETERGENT COMPOSITION OR A COMPOSITION FOR TREATING A FIBER PRODUCT, WHICH COMPRISES A MIXTURE OF COMPONENTS (A1) AND (B1) OR A COMPLEX FORMED BY THE COMPONENTS (A1) AND (B1), WHEREIN THE COMPONENT (A1) IS A WATER-SOLUBLE SILVER SALT, A WATER-SOLUBLE COPPER SALT OR A WATER-SOLUBLE ZINC SALT AND THE COMPONENT (B1) IS AT LEAST ONE LONG-CHAIN ALKYLAMINE COMPOUND SELECTED FROM A COMPOUND REPRESENTED BY GENERAL FORMULA (I) AND A COMPOUND REPRESENTED BY GENERAL FORMULA (II) AND/OR AN ANION PRODUCED FROM THE LONG-CHAIN ALKYLAMINE COMPOUND. IN FORMULA (I), R1 REPRESENTS AN ALKYL GROUP HAVING 8 TO 22 CARBON ATOMS; A1 REPRESENTS A HYDROGEN ATOM OR (CH?)m,-COOX2; X1 AND X2 INDEPENDENTLY REPRESENT A HYDROGEN ATOM, AN ALKALI METAL ATOM, AN ALKALI EARTH METAL ATOM, OR A CATIONIC AMMONIUM GROUP; N REPRESENTS A NUMBER OF 1 TO 3; AND M REPRESENTS A NUMBER OF 1 TO 3. IN FORMULA (II), R2 REPRESENTS AN ALKYL OR ACYL GROUP HAVING 8 TO 22 CARBON ATOMS; Q REPRESENTS (NH-(CH?)m); R REPRESENTS A NUMBER OF 1 OR 0, PROVIDED THAT A2 AND A3 INDEPENDENTLY REPRESENT A HYDROGEN ATOM OR A METHYL GROUP WHEN R REPRESENTS 0, AND A2 REPRESENTS A HYDROGEN ATOM AND A3 REPRESENTS A HYDROGEN ATOM OR CH?COOX3 WHEN R REPRESENTS 1; X3 REPRESENTS A HYDROGEN ATOM, AN ALKALI METAL ATOM, AN ALKALI EARTH METAL ATOM OR A CATIONIC AMMONIUM GROUP; N REPRESENTS A NUMBER OF 1 TO 3; AND M REPRESENTS A NUMBER OF 1 TO 3.
