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• W4243463886 abstract "Chateaurenard Field Test Recovery Mechanisms and Interpretation Gilles Bourdarot; Gilles Bourdarot Soc. Natl. Elf Aquitaine (Production) Search for other works by this author on: This Site Google Scholar Michel Sardin; Michel Sardin Laboratoire des Sciences du Genie Chimique Search for other works by this author on: This Site Google Scholar Antide Putz Antide Putz Soc. Natl. Elf Aquitaine (Production) Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Enhanced Oil Recovery Symposium, Tulsa, Oklahoma, April 1984. Paper Number: SPE-12685-MS https://doi.org/10.2118/12685-MS Published: April 15 1984 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Bourdarot, Gilles, Sardin, Michel, and Antide Putz. Chateaurenard Field Test Recovery Mechanisms and Interpretation. Paper presented at the SPE Enhanced Oil Recovery Symposium, Tulsa, Oklahoma, April 1984. doi: https://doi.org/10.2118/12685-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Improved Oil Recovery Conference Search Advanced Search AbstractThe CHATEAURENARD micellar/polymer field test was conducted between 1976 and 1980 in the south part of the PARIS Bassin. Pilot design, operations part of the PARIS Bassin. Pilot design, operations and oil production results have already been presented. We present a detailled analysis of the presented. We present a detailled analysis of the effluents. It appears that surfactant, most of which remained trapped in the reservoir, is associated with calcium in the oil when produced, as result of sodium exchange with the calcium associated with the clay in the reservoir sand. Supporting phase studies and floods through sandpacks are presented to quantify this cation exchange and investigate its influence on oil recovery and phase trapping.IntroductionELF AQUITAINE operated a micellar-polymer pilot test between 1976 and 1980 in the south part of the PARIS Bassin. PARIS Bassin. The microemulsion that has been injected had been formulated with field water and field oil. The main criterium for the surfactant alcohol mixture choice was the efficiency of the system I to displace oil from packs composed with field sand.After consideration of the rather positive results achieved, a field development on a larger scale has been started, and a new research program has been launched to ascertain our understanding of the recovery mechanisms at work.The influence of ion exchange in chemical flooding operations has already been described in the literature; several compositional simulators include procedures to take it into account. Surfactant phase behavior, surfactant, retention, and the salinity gradient technique are already well documented.We propose an interpretation of the oil recovery and surfactant entrapment mecanisms involved during our first pilot. This interpretation has been confirmed during the laboratory preparation work of our field extension.FIELD RESULTSThe CHATEAURENARD field is mainly composed of rather permeable unconsolidated sand layers. Field water is fresh, field oil is rather viscous (40 cp). Even though the oil saturation (50 %) is rather far from residual (30 %), the water cut is more than 80 %. This is due to the small dip of the layers and to water fingering through the rater viscous oil.We chose to inject a concentrated micellar slug, displaced by polymer thickened water. Due to the rather high viscosity of the oil and the heterogeneity of the reservoir, mobility control is essential. The polymer slug has been oversized as compared to the usual practice so that the efficiency of the surfactant slug could be assessed.The pilot preparation, the field operations and the results in terms of oil production have already been published.The main data concerning field characteristics and the main events are summarized in Table 1.The pilot panel configuration was an unconfined inverted five spot with one central injector, four producers and an observation well (Fig. 1). A producers and an observation well (Fig. 1). A regional pressure drift was oriented NE-SW and an anisotropy of permeability NW-SE was detected by interference testing.The produced fluids from the four producing wells and the observation well have been analysed.P. 61 Keywords: phase behavior, micelle, cation exchange, surfactant, isopropanol, oil recovery, microemulsion, alcohol, upstream oil & gas, sulfonate Subjects: Improved and Enhanced Recovery, Chemical flooding methods This content is only available via PDF. 1984. Society of Petroleum Engineers You can access this article if you purchase or spend a download." @default.
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