Ageing Effect on Steady Rheological Behavior in Oilfield Water of Water-Soluble, Hydrophobically Associating Polymer

2013 ◽  
Vol 781-784 ◽  
pp. 431-435 ◽  
Author(s):  
Yue Jun Zhu ◽  
Jian Zhang ◽  
Bo Jing ◽  
Ye Bang Tan
Keyword(s):  
Shear Rate ◽  
Storage Time ◽  
Ageing Time ◽  
Water Soluble ◽  
Hydrophobically Associating ◽  
Oilfield Water ◽  
And Storage ◽  
Macromolecular Composition ◽  
Associating Polymer ◽  
Hydrophobically Associating Polymer

The effect of ageing time on the macromolecular composition and conformation on intermolecular entanglement and crosslinking was investigated for a water-soluble, hydrophobically associating polymer (WSHAP), by steady-flow and oscillatory experiments at reservoir temperature (65 °C). The measurement of rheological properties was carried out with changing sample properties such as shear stress, shear rate and storage time. Moreover, for the investigated samples, the mathematical interpretation of relationship between the modulusGand the shear rate γ according to the Ostwald de Waele (power law) model, was carried out. Energy of viscous flow (Ea) has also been determined and discussed.

Factors Influencing Viscosity of Twin-Tail Hydrophobically Associating Polymer Weak Gel

2014 ◽  
Vol 628 ◽  
pp. 98-101 ◽  
Author(s):  
Xiao Lin Qian ◽  
Lin Wang ◽  
Xiao Hua Yang ◽  
Yong Xue Lin
Keyword(s):  
Apparent Viscosity ◽  
Phenolic Resin ◽  
Polymer Concentration ◽  
Water Soluble ◽  
Crosslinking Reaction ◽  
Factors Influencing ◽  
Weak Gel ◽  
Hydrophobically Associating ◽  
Associating Polymer ◽  
Hydrophobically Associating Polymer

Weak gel was sythysized by twin-tail hydrophobically associating polymer P(AM/ DiC6AM/NaAA) crosslinked with water-soluble phenolic resin. Apparent viscosity of week gel increases with the increasing of polymer concentration and the increasing of phenolic resin. The crosslinking reaction is influenced by salt. Apparent viscosity of week gel firstly increased and then decreased with increasing salt concentration. Weak gel has shear thinning property. But apparent viscosity of weak get is recoverable after shear.

Gelation Study on a Hydrophobically Associating Polymer/Polyethylenimine Gel System for Water Shut-off Treatment

2015 ◽  
Vol 29 (2) ◽  
pp. 447-458 ◽  
Author(s):  
Yingrui Bai ◽  
Chunming Xiong ◽  
Falin Wei ◽  
Junjian Li ◽  
Yong Shu ◽  
...  
Keyword(s):  
Hydrophobically Associating ◽  
Associating Polymer ◽  
Hydrophobically Associating Polymer ◽  
Gel System

Research on Efficient Polymer Dissolving Technology for Hydrophobically Associating Polymer Flooding on Offshore Platform

2014 ◽  
Vol 670-671 ◽  
pp. 290-294 ◽  
Author(s):  
Yue Jun Zhu ◽  
Jian Zhang ◽  
Wen Sen Zhao ◽  
Shan Shan Wang ◽  
Bo Jing ◽  
...  
Keyword(s):  
Load Capacity ◽  
Polymer Flooding ◽  
Offshore Platform ◽  
Polymer Materials ◽  
Injection System ◽  
Bohai Bay ◽  
Rapid Dissolution ◽  
Hydrophobically Associating ◽  
Associating Polymer ◽  
Hydrophobically Associating Polymer

In order to apply the technique of polymer flooding to the offshore oilfield, some contraventions (the large well spacing, the high salinity formation water, the narrow production platform space, the limited load capacity, the slow dissolution of hydrophobically associating polymer, the voluminous existing polymer injection equipment) must be faced. In order to resolve the problems, a study on the efficient polymer dissolving technology for hydrophobically associating polymer flooding on offshore platform was conducted. The principle of polymer rapid dissolution was analyzed on its restrictive factors. By comprehensive utilization of multi-disciplinary angle of studying from polymer materials, fluid mechanics, et al, the efficient polymer dissolving technology was formed by means of compulsory stretching and water logging for polymer molecular chains, and break through the "bottlenecks" of polymer rapid dissolution. The designed dispersing & dissolving equipment cut down the polymer dissolution time from 60 min to 40 min. Meanwhile, the auto-unloading device, metering device, curing system, injection system, and automatic control system were optimized. Compared with the original equipment, the novel one’s occupied area and operating weight decreased by 21% and 37%, respectively. The efficient injection allocation technology was applied to the polymer flooding pilot testing in Bohai bay so as to provide key technology and equipment support for cumulative incremental oil 395×104 m3 (up to June, 2014), incremental output value 12 billion yuan (estimated by the barrel oil price $90).

Synthesis of Ionic Hydrophobic Associating Polymer and it’s Aqueous Solution‘s Viscosity Characteristics

2014 ◽  
Vol 628 ◽  
pp. 120-124
Author(s):  
Fa Yong Feng ◽  
Pei Zhi Yu
Keyword(s):  
Polymer Concentration ◽  
Synthesis Method ◽  
Water Soluble ◽  
Soluble Polymer ◽  
Water Soluble Polymer ◽  
Viscosity Behavior ◽  
Hydrophobically Associating ◽  
Temperature Shear ◽  
Hydrolyzed Polyacrylamide ◽  
Associating Polymer

Brief introduction of research progresses of hydrophobically associating water soluble polymer, as well as a synthesis method of a hydrophobically associating water-soluble polymer P (AM/KAA/MAHB). Meanwhile the molecular structure is characterized, and the viscosity behavior of the ionic hydrophobic-associating polymer solution is analyzed. The influences of polymer concentration, temperature, shear rate and water salinity of the saline solution on apparent viscosity are discussed. The critical associating concentration of polymer in salt solutions and salt thickening effect are also studied. The results show that the polymer possesses obvious temperature resistance and salt tolerance compared with partially hydrolyzed polyacrylamide polymer.

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