146Experimental Investigation of a Effects of a Plant Based Additive on the Rheological Properties of Bentonite Mud Contaminated by Salt


Drilling fluid has a significant role in success of drilling operation. The simplest drilling fluid is mixture of bentonite and water which is called bentonite mud. Bentonite mud is used to drill top section of well. The quality of makeup water is an important and effective parameter in rheological properties of bentonite mud. This paper investigates the effect of NaCl, KCl, MgCl2, and CaCl2 on rheology of bentonite suspension at room condition. Results from test showed that salt and Oak effect on rheology of bentonite mud act in same direction and decrease rheology. Addition of Oak to bentonite mud contaminated by divalent cations does not change its rheological properties. The results of tests show that Oak act as a natural deflocculant.

Keywords: Drilling Fluid, Bentonite, Rheology, Oak, Deflocculant.

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  • Abu-Jdayil, B. (2011). Rheology of sodium and calcium bentonite–water dispersions: Effect of electrolytes and  aging time. International journal of mineral processing, 98(3), 208-213.

  • API-RP-13I. (2009). API RECOMMENDED PRACTICE 13I (pp. 124). U.S.A: American Petroleum Institute.

  • Bajalan, I. (2013). Leaves of Oak (Quercus branti var. persica) as a Rich Source of Phenolic Compounds.

  • Kok, M. (2010). A rheological characterization and parametric analysis of a bentonite sample. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 33(4), 344-348.

  • Neshat, J. (2015). Experimental Study of Effect of a Plant Based Additive (Terminalia Chebula Retz.) on the Mud Properties. MS thesis, Petroleum University of Technology.   

  • Philips, R. (1979). Trees of North America and Europe. from http://en.wikipedia.org/wiki/Oak

  • Uti, L., & Joel, O. (2013). Comparative Study of Different Salts on Hydration of Bentonite.