Research and development of ultra-high temperature delayed crosslinking acid system
نویسندگان
چکیده
Abstract The average burial depth of carbonate reservoirs in Shunbei area exceeds 7300 meters, and the bottom hole temperature is as high 160°C. commonly used cross-linked acid system cannot meet needs fracturing. Therefore, this article uses AM, AMPS, acrylamide (AM) modified monomers, acrylic (AA) monomers to synthesize thickener SBCH-1, organic zirconium crosslinking agent SBJL1 was synthesized with oxychloride, isopropanol, citric diethanolamine. And other auxiliary agents are selected, final formula determined as: 220% HCl+0.8% SBCH-1 +0.8% SBJL-lcrosslinking SBYC-1 retarder +2% SBHS-1A corrosion inhibitor SBHS-1B +1% SBTW-4 iron ion stabilizer SBZP-2 drainage aid SBPR-1 demulsifier. viscosity stabilized above 200mPa⋅s after continuous shearing at 160°C, 170s-1 for 30min.
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ژورنال
عنوان ژورنال: IOP conference series
سال: 2021
ISSN: ['1757-899X', '1757-8981']
DOI: https://doi.org/10.1088/1755-1315/687/1/012148