The Effect of pH and Salinity on the Rheological Properties of Drilling Mud Formulation from Natural Polymers

  • Inemugha O.
  • Chukwuma F.
  • Akaranta, O.
  • Uyigue L.
Keywords: Drilling Mud, Rheological Properties, Natural Polymers, Salinity, pH


Drilling muds are designed to perform certain functions of drilling operation. Some of the functions are to cool and lubricate the drilling bit, transmit hydraulic power to drill bit, provide filter cake and remove drilling cuttings and maintaining wellbore stability. Various additives with specific properties are added in the mud to help prevent the challenges encountered during drilling process. The work studies the effect of pH and salt on the rheological properties of drilling mud formulation from two natural polymers (Terminaliamantaly(TM) exudate and Guar gum) with the use of Model 35 viscometer. Drilling mud formulation with these polymers was investigated at pH of (7.05, 8.15, 10.07, and 11.13) and salt concentrations of (2, 4, 6, 8 and 10g/ml). Results obtained from drilling mud with TM exudate were compared with drilling mud with guar gum. It was found thatthe rheological properties of drilling mud with Terminaliamantaly exudates increased for higher pH as compared to drilling mud with Guar gum. The increase in salinity reduced the effectiveness of the rheological properties of the mud such that as the salinity in drilling mud increased, the rheological properties of drilling mud with Terminaliamantaly and Guar gum decreased. The performance is attributed to flocculation, dispersion and hydration behavior of particles in the mud.


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Caenn, Ryen, Darley, H C H, & George, Gray R. (2017). Composition and properties of drilling and completion fluids. (7th ed.). Oxford : Elsevier.

Crowo, A. (1990). Ultrasound measurements on oilbased drilling mud. Flow Measurement and Instrumentation, 1(2), 113-117.

Behnamanhar, H., Noorbakhsh, S. S., & Maghsoudloojafari, H. (2014). Environmentally friendly water-based drilling fluid for drilling of water-sensitive formations. Journal of Petroleum and Gas Exploration Research, 4(4), 60-71.

Saboor, A., Khan, A. N., Cheema, H. M., Yaqoob, K., & Shafqat, A. (2016). Effect of polyaniline on the dielectric and EMI shielding behaviors of styrene acrylonitrile. Journal of Materials Science: Materials in Electronics, 27(9), 9634-9641.

Weikey, Y., Sinha, S. L., & Dewangan, S. K. (2018). Effect of Different Gums on Rheological Properties of Slurry. IOP Conference Series: Materials Science and Engineering 310(1), 012068.

Arinkoola, O. A., Olalekan, S. T., Salem, K. K., Omola, J. M., & Gafar, A, O. (2018). Potential evaluation and optimization of natural. Journal of Chemical and Petroleum Engineering, 52(1), 01-12.

Oluyemisi, B.A., Oluwatoyin, O.A., Vivek, S.R. & Ruchita, K.. (2012). Terminalia Gum as a Directly Compressible Excipient for Controlled Drug. AAPS PharmSciTech, 13(1), 16 -23.

Michael, A.O., Babatunde, M.O. & Oluyemisi, A.B. (2017). Native and microwave-modified Terminaliamantaly gums as sustained-release and bioadhesive excipients in naproxen matrix tablet formulations. Polymers in Medicine, 47(1), 35-42.

Inemugha O., Chukwuma F., Akaranta, O., & Ajienka J A. (2019). Rheological Properties of Terminalia Mantaly Exudate as Drilling Mud Additive. Nigeria Annual International Conference and Exhibition, Society of Petroleum Engineers, SPE-198827-MS.

Alaskari, M. K. G & Teymoori, R. (2007). Effects of salinity, pH and temperature on CMC polymer and XC polymer performance. IJE Transactions B: Applications, 20(3), 283-290.

How to Cite
Inemugha O., Chukwuma F., Akaranta, O., & Uyigue L. (2019). The Effect of pH and Salinity on the Rheological Properties of Drilling Mud Formulation from Natural Polymers. International Journal of Engineering and Management Research, 9(5), 126-134.