Stability of Biopolymer and Partially Hydrolyzed
The results indicated that oxygen is the limiting reagent in the degradation reaction with partially hydrolyzed polyacrylamide (HPAM) polymers under normal reservoir conditions. We observed little-to-no difference in degradation between samples with 10 or 100 ppm H 2 S at 500 ppb oxygen concentration, so H 2 S is not the limiting reagent under
terize the viscosity behaviour of partially hydrolyzed polyacrylamide. Experiments show a Partially hydrolyzed polyacrylamide was prepared by tor content was kept under a nitrogen atmosphere.
Viscosity of partially hydrolyzed polyacrylamide under
Viscosity loss of high-molecular-weight partially hydrolyzed polyacrylamide (HPAM) solution was observed in a water injection pipeline before being injected into subterranean oil wells.
1. Introduction. Partially hydrolyzed polyacrylamide (HPAM) is a linear polymer with high molecular weight and plays an important role in enhanced oil recovery (EOR) by increasing the viscosity of flooding fluid (Wang et al., 2003, 2009a, 2009b).Usually, the viscosity of HPAM solution is determined by its chemical structure, molecular weight, degree of hydrolysis, concentration and further
The Effect of Hyrolysis of Polyacrylamide on Solution
With fresh injection waters, the higher hydrolyzed polyacrylamides (25-35%) produce the most viscous polyacrylamides (25-35%) produce the most viscous solutions. In high calcium brines, a 15% or lower percent hydrolyzed polyacrylamide can produce greater solution viscosity. produce greater solution viscosity.
Synthesis of partially hydrolyzed polyacrylamide and investigation of solution properties (Viscosity Behaviour) Article (PDF Available) in Iranian Polymer Journal 13(6):479-484 · November 2004
Rheological Properties of Partially Hydrolyzed
An experimental study was conducted to investigate the effect of salt on viscoelastic properties of partially hydrolyzed polyacrylamide Pusher 700 (Dow Chemical) in aqueous solutions. Viscosity η and primary normal stress differences N1, were measured on a Weissenberg rheogoniometer and a Contraves low‐shear viscometer. The experimental results show the well known stabilizing effect of salt
The conventional polymer such as partially hydrolyzed polyacrylamide (HPAM) is commonly used in the Enhanced Oil Recovery (EOR) processes to control the mobility ratio and to improve the sweep efficiency (Myagchenkov and Kurenkov, 1991; Lee et al., 2009). HPAM is a synthetic polymer consisted of straight chains of acrylamide monomers some of
Viscosity Behavior of Alkaline, Surfactant, Polyacrylamide
Abstract. An experimental study was conducted to examine the effects of various alkalis, surfactants and brines on the viscosity of dilute aqueous solutions of Alcoflood 1175L, a partially hydrolyzed polyacrylamide polymer, over a wide range of polyacrylamide polymer, over a wide range of parameters. parameters.
In this work, we comprehensively investigate the physical properties and performance of a molecular-weight series (3–20 × 10 6 g/mol) of partially hydrolyzed polyacrylamide (HPAM) in silicon anodes. We quantify the mechanical strength, electrolyte uptake, adhesion to silicon, copper, and carbon, as well as electrochemical performance and
Prevention of network destruction of partially hydrolyzed
High temperature and a high salt content in oil reservoirs significantly decrease the performance of polymer flooding. In this work, the viscoelastic properties of a partially hydrolyzed polyacrylamide (HPAM) solution with and without salt (NaCl) and at two different temperatures (35 °C and 70 °C) were evaluated using rheological approaches.
Abstract Many excellent articles have reported various aspects of the nature of hydrolyzed polyacrylamide flow in porous media. The polyacrylamide flow in porous media. The degree of mobility reduction is proportional to: 1. the viscosity of the pol
- What is poly aluminum-ferric chloride (PAFC)?
- Author to whom correspondence should be addressed. Poly aluminum-ferric Chloride (PAFC) is a new type of high efficiency coagulant. In this study, high iron type gangue is used as a main raw material. It is calcined at 675 °C for 1 h and 3% CaF 2 is added to the calcined powder and reacted with 20% hydrochloric acid at 93 °C for 4 h.
- What is high-purity poly-aluminum chloride (PACL)?
- Poly-aluminum chloride (PACl) is one of the common coagulants for water and wastewater treatment. A new Chinese national standard of PACl has been implemented, where the concentration of insoluble substances, iron and heavy metals is to be controlled strictly, then researches on the preparation of high-purity PACl are needed.
- Is polyaluminium ferric chloride a composite coagulant?
- Gao, B.; Yue, Q.; Miao, J. Evaluation of polyaluminium ferric chloride (PAFC) as a composite coagulant for water and wastewater treatment. Water Sci. Technol. 2003, 47, 127. [ Google Scholar] [ CrossRef] [ PubMed]
- What is high-poly-aluminum chloride sulfate (hpacs) coagulant?
- High-poly-aluminum chloride sulfate (HPACS) coagulants with different [SO42−]/ [Al3+] molar ratio (S) were prepared and proved to have high coagulation efficiency for the removal of humic acid and…
