Self-assembly properties of a temperature- and salt-tolerant amphoteric hydrophobically associating polyacrylamide

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 49281-49288 ◽  
Author(s):  
Hongping Quan ◽  
Zhuoke Li ◽  
Zhiyu Huang
Keyword(s):  
Polymer Solution ◽  
Apparent Viscosity ◽  
Self Assembly ◽  
Salt Tolerant ◽  
Hydrophobically Associating Polyacrylamide ◽  
Hydrophobically Associating

We prepared amphoteric hydrophobically associating polyacrylamides (AHAPAM) whose apparent viscosity of 0.5 wt% polymer solution can maintain 92 mPa s at 140 °C and 170 s−1 shearing for 1 h.

scholarly journals Self-Assembly of Hydrophobically Associating Polyacrylamide and Gemini Surfactant

2012 ◽  
Vol 28 (06) ◽  
pp. 1405-1410
Author(s):  
HAN Li-Juan ◽  
◽  
YE Zhong-Bin ◽  
CHEN Hong ◽  
LUO Ping-Ya ◽  
...  
Keyword(s):  
Self Assembly ◽  
Gemini Surfactant ◽  
Hydrophobically Associating Polyacrylamide ◽  
Hydrophobically Associating

Performance and field implementation of a new fracturing fluid consisting of hydrophobically associating polyacrylamide and anionic surfactant

2016 ◽  
Vol 36 (1) ◽  
pp. 13-21 ◽  
Author(s):  
Zhongcong Zhao ◽  
Tongyi Liu ◽  
Pingya Luo ◽  
Yan Li ◽  
Jianxin Liu ◽  
...  
Keyword(s):  
Network Structure ◽  
Anionic Surfactant ◽  
Self Assembly ◽  
Fracturing Fluid ◽  
Hydroxypropyl Guar ◽  
Fluid Field ◽  
Fracturing Fluids ◽  
Hydrophobically Associating Polyacrylamide ◽  
Hydrophobically Associating ◽  
Static Conditions

Abstract The fundamental cause of the proppant suspension behavior in hydraulic fracturing fluids lies in its internal microcosmic network structure and structural strength. In addition to chemical crosslinking, another method to form a network structure is established in this paper. Hydrophobically associating polyacrylamide and an anionic surfactant self-assembly process was applied to form a network structure. Compared with crosslinked hydroxypropyl guar gel, the new fracturing fluid even has better proppant suspending properties in static conditions. The capability does not result from crosslinkage but from reinforced physical associations between chains. The performance of this new fracturing fluid was tested and the results showed that it can fully satisfy the requirement of fracturing fluid. Field test shows excellent stimulation effects during its applications in 400 wells in eight oilfields in China.

scholarly journals Interaction between Aqueous Solutions of Hydrophobically Associating Polyacrylamide and Dodecyl Dimethyl Betaine

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Zhongbin Ye ◽  
Guangfan Guo ◽  
Hong Chen ◽  
Zheng Shu
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Interfacial Tension ◽  
Apparent Viscosity ◽  
Mixed System ◽  
Radius Of Gyration ◽  
Network Structures ◽  
Hydrophobically Associating Polyacrylamide ◽  
Oil Water ◽  
Hydrophobically Associating

The interaction between hydrophobically associating polyacrylamide (HAPAM) and dodecyl dimethyl betaine (BS-12) is studied through surface tension, interfacial tension (IFT), apparent viscosity, aggregation behavior, and microscopic morphologies. Results show that surface and interface properties of BS-12 are largely affected by HAPAM. BS-12 critical micelle concentrations are increased with the increment of polymer concentrations. Abilities of reduced air-water surface tension and oil-water interfacial tension are dropped. The oil-water interfacial tension to reach minimum time is increased. HAPAM can form network structures in the aqueous solution. Mixed micelles are formed by the interaction between BS-12 micelles and hydrophobic groups of HAPAM in aqueous solution and self-assembly behavior of HAPAM is affected. With the increment of surfactant concentrations, the apparent viscosity, apparent weight average molecular weights (Mw, a), root mean square radius of gyration (〈Rg〉), and hydrodynamic radius of HAPAM increase first and then decline. Moreover, microscopic morphologies of the mixed system are formed from relatively loose network structures to dense network structures and then become looser network structures and the part of network structures fracture.

Sign in / Sign up

Export Citation Format

Share Document