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Showing 1 to 6 of 6 for “"HPAM"”.
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Dynamics of Flow-Induced Structure Formation in Drag Reducing Polymer Solutions
… molecular weight distribution. Experiments with HPAM and PAM solutions in a large channel flow loop at Re ≥ 20,000 provide evidence of the importance of chain degradation to changes in drag reduction with time. Losses in molecular weight are small in the case of HPAM and do not correspond to …
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The Impact of Surface Modified Nanoparticles on the Performance of Polymer Solutions for Heavy Oil Recovery
… of partially hydrolyzed polyacrylamide (HPAM) and xanthan gum (XG). In the second stage, the surface of the NPs were modified by chemical grafting with carboxylic acids, silanes, and polyacrylamide. The modified NPs were characterized using transmission electron microscopy (TEM), …
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NMR Studies of Enhanced Oil Recovery Core Floods and Core Analysis Protocols
… were applied to a hydrolysed polyacrylamide (HPAM)-EOR flood in a sandstone core. A total recovery of 62.4% of OOIP was achieved, of which 4.3% was from HPAM. Continued brine injection following conventional recovery (waterflooding) and EOR procedures demonstrated most moveable fluid …
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Development of formation damage models for oilfield polymers.
… to correctly predict hydrolysed polyacrylamide (HPAM) viscosity under shear degradation, and consequently have not been able to meet the need of production predictions. The effects of the above-mentioned factors have not been fully integrated into polymer formation damage modelling. In this …
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Rheology and Flow Behaviour of Non-Newtonian, Polymeric Fluids in Capillaric and Porous Media: Aspects Related to Polymer Flooding for Enchanced Recovery of Heavy Oil
… properties of both hydrolyzed polyacrylamides (HPAM) and hydrophobically associating polyacrylamides (HAP) used in heavy enhanced oil recovery (EOR) processes. The rheometric analyses indicated that improved resistance to flow due to elastic phenomenon were observed as a function of the polymer …
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Investigation of Recrosslinkable Preformed Particle Gels for Natural Gas Conformance Control
… compared to conventional polymer gel systems (HPAM/Cr (III)) that have been applied in oilfields to control gas injection conformance. The results showed that the RPPG systems were stable under both static and dynamic gel-natural gas interactions and were stable when exposed to an acidic …