Title: Development of oil-based drilling fluid using iron oxide magnetic (Fe₃O₄) with superior properties leading to real time rheological control

Authors: Masoud Ghasemi Dehkordi; Pacelli L.J. Zitha; Yasaman Hosseinzadeh Dehaghani; Morteza Belbasi

Addresses: Zima Tose'e Parsian Kish, No. 26, Baradaran Ghaffari Alley, North Felestin St., Fatemi Sq., Tehran, Iran ' Department of Civil Engineering and Geosciences, Delft University of Technology, Delft, Netherland ' Zima Tose'e Parsian Kish, No. 26, Baradaran Ghaffari Alley, North Felestin St., Fatemi Sq., Tehran, Iran ' Zima Tose'e Parsian Kish, No. 26, Baradaran Ghaffari Alley, North Felestin St., Fatemi Sq., Tehran, Iran

Abstract: Magnetorheological fluids have the ability to exhibit a wide range of rheological properties when exposed to an external magnetic field. In this paper, an applicable oil-based magnetorheological drilling fluid is prepared using iron oxide magnetic particles (Fe₃O₄). In order to prove the ability and performance of the prepared fluid, vibrating sample magnetometer (VSM) and magnetorheology tests have been performed. VSM measurements showed that permeability and saturation magnetization are 0.1615 and 135.3017 emu/gr, respectively. This test generates the hysteresis curve of the sample which shows that the behaviour of this fluid is soft magnetism i.e. it is very sensitive and is easily magnetized by the application of very small magnetic fields. Furthermore, magnetorheology measurements were conducted for magnetic fields ranging from 0 to 0.1T and the measured values are compared with rheology tests of conventional drilling fluids. The results indicate a noticeable increase in apparent viscosity and shear rate. [Received: January 29, 2019; Accepted: June 17, 2019]

Keywords: smart fluids; magnetorheological drilling fluid; magnetorheology; vibrating sample magnetometer; oil-based mud; rheological control.

DOI: 10.1504/IJOGCT.2020.111154

International Journal of Oil, Gas and Coal Technology, 2020 Vol.25 No.4, pp.400 - 422

Received: 29 Jan 2019
Accepted: 17 Jun 2019
Published online: 11 Nov 2020 *

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