WSTA 15th Gulf Water Conference

WSTA 15th Gulf Water Conference
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Study of the factors affecting the rheological behavior of the adjusting polymer "xanthan" in drilling muds

Hacina Abchiche, Imene Bouchelkia, Faiza Benaziza, Souhila Kadem, Nadia Chekir, Nouara Saada, Walid Houssem Benhadda

https://doi.org/10.5004/ic202420

Study of the factors affecting the rheological behavior of the adjusting polymer "xanthan" in drilling muds

Hacina Abchiche1, Imene Bouchelkia1, Faiza Benaziza2, Souhila Kadem1, Nadia Chekir1, Nouara Saada2, Walid Houssem Benhadda2

1Laboratory of Matter’s Valorization and Recycling of Materials for Sustainable Development (VRMDD), University of Sciences and Technology Houari Boumediene, El Alia BP32, 16111, Bab Ezzouar, Alger, Algeria
2Deposits department, Research and Development Center (RDC) Sonatrach, Building 28, Housing Estate 1406 Apartments, Boumerdès 35000, Alger, Algeria

https://doi.org/10.5004/ic202420

ABSTRACT

The study carried out as part of this work has two main objectives: firstly, to analyze the impact of parameters influencing the rheological behavior of an adjusting polymer used in drilling muds, namely xanthan gum. This extracellular polysaccharide is produced by Xanthomonas campestris and is characterized by its good resistance to high temperatures and salinity. The parameters examined include polymer concentration, temperature, and salinity. Secondly, the study aims to physically and chemically characterize the drilling mud containing the formulated adjusting polymer at the EIRA laboratory. The experimentation was carried out using an MCR 302e Anton Paar rheometer equipped with a coaxial cylinder geometry of the Couette type. The selected shear rate range extends from 0.1 to 1000 s–1. Rheological tests were performed at ambient temperature, except for those examining the effect of temperature, which varied up to 80°C. The results show that the effect of xanthan gum concentration on the apparent viscosity of solutions depends on the applied shear rate. The shear-thinning behavior of xanthan solutions remains constant with increasing temperature. Furthermore, the presence of salts increases xanthan viscosity due to the branched chains it contains. The incorporation of xanthan solutions containing salt into a drilling mud formulation alters its physicochemical characteristics, leading to an increase in both apparent and critical viscosities.

Keywords: Oil drilling; Drilling mud; Adjustment polymer; Xanthan gum; Rheological behavior; Temperature; Salinity

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