English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/215726
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Modified Starch as a Filter Controller in Water-Based Drilling Fluids

AuthorsSoto, Diana; León, Orietta ; Urdaneta, José; Muñoz-Bonilla, Alexandra ; Fernández-García, Marta
Itaconic acid
Graft copolymer
Drilling fluids
Issue Date20-Jun-2020
PublisherMultidisciplinary Digital Publishing Institute
CitationMaterials 13(12): 2794 (2020)
AbstractHerein, the effectiveness of an itaconic acid (IA) graft copolymer on native corn starch (NCS) as a filter control agent in fresh water-based drilling fluids (WBDFs) was evaluated. The copolymer (S-g-IA_APS) was synthesized by conventional radical dispersion polymerization using the redox initiation system (NH4)2S2O8/NaHSO3. The modification of the starches was verified by volumetry, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Then, three WBDFs were formulated in which only the added polymer (NCS, S-g-IA_APS, and a commercial starch (CPS)) was varied to control the fluid losses. The physico-chemical, rheological, and filtering properties of the formulated systems were evaluated in terms of density (ρ), pH, plastic viscosity (µp), apparent viscosity (µa), yield point (Yp), gel strength (Rg), and filtrated volume (VAPI). In order to evaluate the resistance to temperature and contaminants of the WBDFs, they were subjected to high pressure and high temperature filtering (VHPHT). The filter control agents were also subjected to aging and contamination with cement and salt. The S-g-IA_APS addition improved the filtering behavior at a high pressure and temperature by 38%.
Description© 2020 by the authors.
Publisher version (URL)https://doi.org/10.3390/ma13122794
Appears in Collections:(ICTP) Artículos
Files in This Item:
File Description SizeFormat 
Modified_Soto_Art2020.pdf1,45 MBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.