Development of a Viscoelastic Property Database for EOR Polymers

Abstract

Development of a Viscoelastic Property Database for EOR Polymers Do Hoon Kim; Do Hoon Kim Center for Petroluem & Geosystems Engineering, The University of Texas at Austin Search for other works by this author on: This Site Google Scholar Seungjun Lee; Seungjun Lee Center for Petroluem & Geosystems Engineering, The University of Texas at Austin Search for other works by this author on: This Site Google Scholar Chong Hyun Ahn; Chong Hyun Ahn Center for Petroluem & Geosystems Engineering, The University of Texas at Austin Search for other works by this author on: This Site Google Scholar Chun Huh; Chun Huh Center for Petroluem & Geosystems Engineering, The University of Texas at Austin Search for other works by this author on: This Site Google Scholar Gary A. Pope Gary A. Pope Center for Petroluem & Geosystems Engineering, The University of Texas at Austin Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, April 2010. Paper Number: SPE-129971-MS https://doi.org/10.2118/129971-MS Published: April 24 2010 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Kim, Do Hoon, Lee, Seungjun , Ahn, Chong Hyun, Huh, Chun , and Gary A. Pope. "Development of a Viscoelastic Property Database for EOR Polymers." Paper presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, April 2010. doi: https://doi.org/10.2118/129971-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Improved Oil Recovery Conference Search Advanced Search Abstract Partially hydrolyzed polyacrylamide (HPAM) and related polymers are widely used as mobility control agents in all chemical EOR applications, and an accurate characterization of their apparent viscosity in the reservoir rock is crucial for design and performance evaluation of these processes. Their apparent viscosity in porous media generally decreases as flow velocity increases; however, beyond a certain critical velocity, the apparent viscosity sharply increases, showing shear-thickening behavior. A procedure to predict both the shear-thinning and shear-thickening apparent viscosities, from the rheometer-measured shear and oscillatory viscosities, has been developed earlier and validated with corefloods (Delshad et al., 2008). In addition to the shear viscosity database developed earlier (Lee et al., 2009), a database of the oscillatory viscosities of the EOR polymers was therefore developed for wide ranges of polymer concentration, NaCl salinity and calcium content, and temperature. The generalized Maxwell model (GMM) is employed to estimate the relaxation time of the polymer solution, by making non-linear fitting of the measured G' and G" data to GMM. Empirical correlations were developed to predict the relaxation time, which is subsequently used to quantify the shear-thickening portion of the apparent polymer viscosity under different process conditions. The apparent viscosity estimated matches reasonably with the available coreflood data. Keywords: dependence, spectrum, eor polymer, chemical flooding methods, relaxation time, viscoelastic behavior, salinity, generalized maxwell model, porous media, hardness Subjects: Improved and Enhanced Recovery, Chemical flooding methods Copyright 2010, Society of Petroleum Engineers You can access this article if you purchase or spend a download.