Molecular simulation of structure formation and rheological properties of mixtures of telechelic and monofunctional associating polymer

2018 ◽  
Vol 56 (18) ◽  
pp. 1251-1264 ◽  
Author(s):  
Tsutomu Furuya ◽  
Tsuyoshi Koga
Keyword(s):  
Rheological Properties ◽  
Structure Formation ◽  
Molecular Simulation ◽  
Associating Polymer

RHEOLOGICAL PROPERTIES OF HUMIC SUBSTANCES OF PEAT AND BROWN COAL

2021 ◽  
pp. 169-174
Author(s):  
Ivan I. Lishtvan ◽  
Vera N. Aleinikova
Keyword(s):  
Rheological Properties ◽  
Humic Substances ◽  
Structure Formation ◽  
Humic Substance ◽  
Brown Coal ◽  
Oil Wells ◽  
Alkaline Media ◽  
Rheological Parameters ◽  
Acid Media ◽  
Brown Coals

Knowledge about structure and rheological peculiarities of drilling solutions and reagents applied for the proceeding of oil wells has significant value for the forecasting of oil wells drilling. The research results of the structure of the humic substances of peat and brown coals precipitated in different pH ranges from the standpoint of their ability to structure formation on the base of the rheological curves obtaining of the flow of their dispersions and determining of their rheological parameters in terms of their application in drilling practice are given in the article. It is established that during transition from fraction, beset into alkaline media (12.0–8.5) to fraction beset into acid media (5.0–2.0) the decrease of the rheological indicators of caustobiolate humic substance is occurred. Rheological curves of the flow of the disperse of caustobiolate humic substances of the fraction 1 and 2 are characterized for strong fossil structures, disperses of humic substances of the fraction 3 is for less strong coagulation structures. Less structured are humic substances of brown coal so that their use is preferable for the regulation of the structure and rheological peculiarities of drilling solutions.

Effect of the type of polymer and solvent on the rheological properties and structure formation of polymer concentrates

1968 ◽  
Vol 10 (9) ◽  
pp. 2379-2394 ◽  
Author(s):  
A.A. Tager ◽  
V.Ye. Dreval' ◽  
M. Kurbanaliyev ◽  
M.S. Lutskii ◽  
N.Ye. Berkovits ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Structure Formation
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