Mechanical stability of high-molecular-weight
The higher mechanical stability of the sulfonated polymer is attributed to the higher rigidity of its molecules in solution. On the other hand, the ability of the high-molecular-weight polymers to form transient, flow-induced microgels boost their mechanical stability. This ability increases with the increase in the molecular weight of the polymer.
Mechanical stability of high-molecular-weight polyacrylamides and an (acrylamido tert -butyl sulfonic acid)-acrylamide copolymer used in enhanced oil recovery. Journal of Applied Polymer Science 2014, 131 (20) , n/a-n/a. DOI: 10.1002/app.40921.
Mechanical stability of high-molecular-weight
Mechanical stability of high-molecular-weight polyacrylamides and an (acrylamido tert-butyl sulfonic acid)-acrylamide copolymer used in enhanced oil recovery Abdul Aziz Al-Hashmi , Rashid Al-Maamari , Ibtisam Al-Shabibi, Ahmed Mansoor, Hamed Al-Sharji, Alain Zaitoun
Mechanical Stability of High-Molecular-Weight Polyacrylamides and an (acrylamido tert-butyl sulfonic acid)-Acrylamide Copolymer Used in Enhanced Oil Recovery
Rheology and mechanical degradation of high-molecular
High-molecular-weight partially hydrolyzed polyacrylamides are widely used in enhanced oil recovery. Mechanical degradation of these polymers as a result of flow through pumps, chokes, valves and
High-molecular-weight partially hydrolyzed polyacrylamides are widely used in enhanced oil recovery. Mechanical degradation of these polymers as a result of flow through pumps, chokes, valves and at the sand face has been recently reported to have a negative impact on the application.
Polyacrylamide degradation and its implications
High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction
In the polymer flooding operation, a high molecular weight water-soluble polymer, polyacrylamide or its derivatives, is added to thicken the displacing fluid, so as to reduce the mobility of the aqueous phase, enlarge the swept volume, and , consequently, to improve oil recovery efficiency. 4,5 Additionally, polymer adsorption onto the rocks
Flow Characteristics of Partially Hydrolyzed
ABSTRACTPartially hydrolyzed polyacrylamides (HPAMs) are the most widely used polymers in enhanced oil recovery (EOR). This study presents capillary flow measurements of three different molecular weight HPAMs in synthetic brine. Polymer solutions having similar viscoelasticity were forced to flow through a 0.23 mm (radius) stainless steel capillary to investigate their flow characteristics
Polyacrylamides constitute a class of polymers that can entirely dissolve or swell in water to form a solution or hydrogel, respectively. Free radical polymerization of acrylamide monomer, using both solution and inverse emulsion polymerization, was applied to produce polyacrylamide with various molecular weights.
Monitoring Thermal and Mechanical Stability of Enhanced
In addition, the mechanical stability was evaluated by injection of a polymer solution in a capillary with a low internal diameter (125µm), and with a shear rate up to 1,500,000s-1. The results obtained using the new technique provide an efficient and reliable way of selecting the proper PAM chemistry for a given reservoir condition.
Title: Enhanced Oil Recovery 1 Enhanced Oil Recovery Optimizing Molecular Weight in Polymer Flood 2 Fluid viscosity in a polymer flood. It is surprising to find that, regardless the initial molecular weight of the polymer injected, the molecular weight of the polymer in the produced water is low, around 4 to 10 million.
- Does Brazil have a good wastewater treatment system?
- In Brazil, wastewater treatment coverage is low. Even when treatment is carried out, many municipalities cannot achieve adequate levels of contaminant removal, and the usual practice of releasing raw or treated domestic effluent into water bodies remains.
- Does Brazil's urban wastewater sector have a potential for wastewater reuse?
- The case study concludes that Brazil’s urban wastewater sector still largely struggles with overcoming barriers to wastewater collection and treatment, but it has great potential for wastewater reuse that has not yet been fully tapped, despite initial promising initiatives, mainly for industrial reuse.
- What percentage of sewage is treated in Brazil?
- Special emphasis is given to small to medium size communities with populations lower than 100,000 inhabitants, which represent approximately 95% of the 5,570 Brazilian municipalities. In terms of coverage, around 40% of the sewage generated in Brazil is treated, with an estimated number of treatment plants in the order of 2,800.
- Is biological sewage treatment possible in Brazil?
- Due to the favorable climatic conditions in Brazil, there are no technical limitations for the adoption of biological sewage treatment. Traditional options incorporate stabilization ponds and activated sludge, but the more recent trend involves the adoption of UASB reactors followed by some form of post-treatment.
