High-Temperature Resistant and Environmentally Friendly Drilling Fluid Treatment Agent

• Published in: Chemistry and technology of fuels and oils Vol. 60; no. 4; pp. 1107 - 1115
• Main Authors: Ren, Yinghui, Li, Shifang, Wu, Ke, He, Kangning, Jiang, Nan
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-09-2024; Springer Nature B.V
• Subjects: Bentonite; Chemistry; Chemistry and Materials Science; Copper; Drilling fluids; Drilling muds; Environmental protection; Geotechnical Engineering & Applied Earth Sciences; High temperature environments; Hydroxides; Industrial Chemistry/Chemical Engineering; Innovative Technologies of Oil and Gas; Mineral Resources; Swelling; Temperature; Thermal stability; Thermogravimetric analysis; Zinc; drilling fluids; linear expansion experiments; inhibitors; high temperature resistance; environmental protection
• ISSN: 0009-3092; 1573-8310
• DOI: 10.1007/s10553-024-01772-0

During the drilling process, high-temperature environments can cause the performance of traditional drilling fluids to decline, affecting drilling efficiency and environmental protection. To address this issue, this study added polymetallic hydroxide to anti-temperature and environmentally protective drilling fluid treatment agents, verifying its performance through linear expansion experiments, anti-expansion experiments, mud ball experiments, and thermogravimetric analysis.The experimental results indicate that at 20 minutes, the expansion rate of bentonite is 44.2% in water and 22.3% in KCl, and at 120 minutes, the expansion rate is 70.4% in water and 50.4% in KCl. When mixing different polymetallic hydroxides with bentonite clay, M1-Fe exhibited the lowest swelling among Fe-doped polymetallic hydroxide samples, with rates of 13.3% at 20 minutes and 22.7% at 120 minutes. Among Cu-doped samples, M2-Cu showed the lowest expansion, at 15.9% at 20 minutes and 25.3% at 120 minutes. For Zn-doped samples, M3-Zn had the lowest expansion rates, at 16.5% at 20 minutes and 27.3% at 120 minutes.The results demonstrate that Fe-doped polymetallic hydroxide samples exhibit excellent swelling inhibition and thermal stability at high temperatures. These samples significantly improve the high-temperature stability and environmental performance of drilling fluids, showing great potential for widespread use in high-temperature drilling.