Characterization and rheological properties of dilute-solutions of three different families of water-soluble copolymers prepared by solution polymerization

2004 ◽  
Vol 12 (5) ◽  
pp. 451-458 ◽  
Author(s):  
Enrique Javier Jiménez-Regalado ◽  
Gregorio Cadenas-Pliego ◽  
Marissa Pérez-Álvarez ◽  
Yessica Hernández-Valdez
Keyword(s):  
Rheological Properties ◽  
Water Soluble ◽  
Solution Polymerization ◽  
Dilute Solutions

Improving the rheological properties of water-based calcium bentonite drilling fluids using water-soluble polymers in high temperature applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jinliang Liu ◽  
Fengshan Zhou ◽  
Fengyi Deng ◽  
Hongxing Zhao ◽  
Zhongjin Wei ◽  
...  
Keyword(s):  
High Temperature ◽  
Rheological Properties ◽  
Apparent Viscosity ◽  
Drilling Fluid ◽  
Shear Thickening ◽  
Water Soluble ◽  
Drilling Fluids ◽  
Drilling Depth ◽  
Filtration Loss ◽  
Calcium Bentonite

Abstract Most of bentonite used in modern drilling engineering is physically and chemically modified calcium bentonite. However, with the increase of drilling depth, the bottom hole temperature may reach 180 °C, thus a large amount of calcium bentonite used in the drilling fluid will be unstable. This paper covers three kinds of calcium bentonite with poor rheological properties at high temperature, such as apparent viscosity is greater than 45 mPa·s or less than 10 mPa·s, API filtration loss is greater than 25 mL/30 min, which are diluted type, shear thickening type and low-shear type, these defects will make the rheological properties of drilling fluid worse. The difference is attributed to bentonite mineral composition, such as montmorillonite with good hydration expansion performance. By adding three kinds of heat-resistant water-soluble copolymers Na-HPAN (hydrolyzed polyacrylonitrile sodium), PAS (polycarboxylate salt) and SMP (sulfomethyl phenolic resin), the rheological properties of calcium bentonite drilling fluids can be significantly improved. For example, the addition of 0.1 wt% Na-HPAN and 0.1 wt% PAS increased the apparent viscosity of the XZJ calcium bentonite suspension from 4.5 to 19.5 mPa·s at 180 °C, and the filtration loss also decreased from 20.2 to 17.8 mL.

Synthesis, Characterization, and Flocculation Properties of Branched Polyacrylamide

2012 ◽  
Vol 476-478 ◽  
pp. 2311-2316 ◽  
Author(s):  
Wei Min Sun ◽  
Guang Cheng Zhang ◽  
He Lin Li ◽  
Dong Dong Li ◽  
Pei Pei Li ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Water Soluble ◽  
The Self ◽  
Solution Polymerization ◽  
Solution Ph ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Acrylamide Monomer ◽  
Clay Suspensions

A water soluble branched polyacrylamide has been synthesized through solution polymerization. The polymerization was initiated by potassium diperiodatocuprate, K5[Cu(HIO6)2](Cu(III)), in alkaline medium and capable of initiating the self condensation vinyl polymerization of acrylamide monomer. The polymer obtained was characterized using Fourier-transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy. Its flocculation properties were evaluated with clay suspensions using standard jar tests. The concentration of monomers, concentration of initiators, reaction temperature and solution pH on the influence of intrinsic viscosity and flocculation properties of production were studied. The results demonstrate that the branched polymer can be used as a kind of novel flocculant in water and wastewater treatment.

Changes in the rheological properties of mixtures of water-soluble cellulose ethers under mechanical treatment

2007 ◽  
Vol 417 (1) ◽  
pp. 273-276
Author(s):  
R. F. Ganiev ◽  
O. V. Alekseeva ◽  
O. V. Rozhkova ◽  
V. A. Padokhin ◽  
Ya. A. Anikin
Keyword(s):  
Rheological Properties ◽  
Mechanical Treatment ◽  
Water Soluble ◽  
Cellulose Ethers

Study of three different families of water-soluble copolymers: synthesis, characterization and viscoelastic behavior of semidilute solutions of polymers prepared by solution polymerization

Polymer ◽  
2004 ◽  
Vol 45 (6) ◽  
pp. 1993-2000 ◽  
Author(s):  
Enrique J. Jiménez-Regalado ◽  
Gregorio Cadenas-Pliego ◽  
Marissa Pérez-Álvarez ◽  
Yessica Hernández-Valdez
Keyword(s):  
Viscoelastic Behavior ◽  
Water Soluble ◽  
Solution Polymerization ◽  
Semidilute Solutions

Rheological properties and chain conformation of soy hull water-soluble polysaccharide fractions obtained by gradient alcohol precipitation

2019 ◽  
Vol 91 ◽  
pp. 34-39 ◽  
Author(s):  
Shengnan Wang ◽  
Lingling Zhao ◽  
Qinghua Li ◽  
Chang Liu ◽  
Jinlian Han ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Chain Conformation ◽  
Water Soluble ◽  
Soy Hull ◽  
Soluble Polysaccharide
Sign in / Sign up

Export Citation Format

Share Document