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• W4246722025 abstract "Scale Inhibitor Squeeze Treatment Efficiency in Unfractured and Fractured Wells Oleg Ishkov; Oleg Ishkov Heriot-Watt University Search for other works by this author on: This Site Google Scholar Eric Mackay; Eric Mackay Heriot-Watt University Search for other works by this author on: This Site Google Scholar Ken Sorbie Ken Sorbie Heriot-Watt University Search for other works by this author on: This Site Google Scholar Paper presented at the SPE International Conference on Oilfield Scale, Aberdeen, UK, May 2010. Paper Number: SPE-131273-MS https://doi.org/10.2118/131273-MS Published: May 26 2010 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Ishkov, Oleg , Mackay, Eric , and Ken Sorbie. Scale Inhibitor Squeeze Treatment Efficiency in Unfractured and Fractured Wells. Paper presented at the SPE International Conference on Oilfield Scale, Aberdeen, UK, May 2010. doi: https://doi.org/10.2118/131273-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 International Oilfield Scale Conference and Exhibition Search Advanced Search Abstract Deployment of scale inhibitor squeeze treatments generally involves injection of aqueous solutions at pressures higher than the formation pressure and at temperatures lower than the formation temperature. If the pressure and temperature differences are great enough, the pumping activity may lead to the development of fractures in the near-well bore area, if the well has not already been fractured and propped. Therefore, attention needs to be paid to the impact of squeezing fractured wells, unfractured wells, or wells that fracture during the scale inhibitor squeeze treatment.This paper presents results of using a simulator to model squeeze treatments for these three scenarios. The simulator has the unique combination of being able to model (i) scale inhibitor propagation and retention in the porous medium, (ii) scale squeeze treatments in unfractured or fractured wells, (iii) the mechanics of fracture propagation during a treatment, (iv) the geochemical reactions that may lead to in situ dissolution or precipitation, and (v) the impact of the injected scale inhibitor on these reactions when they occur within the treatment zone.Parameters considered in this study include locations in the matrix where scaling reactions occur, and fracture geometry and conductivity. If a fracture is created, the timing of this relative to the injection of the main scale inhibitor treatment volume has also been studied and is found to be very important.Inappropriate placement of scale inhibitor during a squeeze treatment may mean that downhole zones at risk of scale damage are not adequately protected, even although the observed inhibitor concentrations at the wellhead are above the level required for protection. In this work, a new approach is presented also in which we define and measure the efficiency of the squeeze treatment based on produced water ion compositions. This approach takes account of whether the scaling reactions would take place in the treated zone (and hence should be impacted by the presence of inhibitor), or whether they would take place deep within the reservoir. Keywords: injection water fraction, production chemistry, asphaltene remediation, oilfield chemistry, paraffin remediation, ion concentration, scale inhibition, placement, scenario, remediation of hydrates Subjects: Hydraulic Fracturing, Production Chemistry, Metallurgy and Biology, Inhibition and remediation of hydrates, scale, paraffin / wax and asphaltene Copyright 2010, Society of Petroleum Engineers You can access this article if you purchase or spend a download." @default.
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• W4246722025 title "Scale Inhibitor Squeeze Treatment Efficiency in Unfractured and Fractured Wells" @default.
• W4246722025 doi "https://doi.org/10.2523/131273-ms" @default.
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