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Home  >  Volume 46 (May, 2018)

38. THE EFFECT OF MIXING TIME ON THE RHEOLOGICAL PROPERTIES OF GINGER, COCOYAM AND XANTHAN GUM by Onaiwu Oduwa, Ohenhen Ikponmwonsa, Osagie Ehiousu and Joshua Osula Volume 46 (May, 2018 Issue), pp281 –286
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THE EFFECT OF MIXING TIME ON THE RHEOLOGICAL PROPERTIES OF GINGER, COCOYAM AND XANTHAN GUM

Onaiwu Oduwa, Ohenhen Ikponmwonsa, Osagie Ehiousu and Joshua Osula 

Department of Petroleum Engineering, University of Benin, Benin City, Nigeria.

Department of Science Laboratory Technology: Chemical Petroleum Techniques Options, University of Benin, Benin City, Nigeria. 

Abstract

The rheological properties of drilling fluid change owing to mixing time and these affect drilling in deep wells.Drilling fluid which are: oil based drilling mud (OBM), Water based drilling mud (WBM), Synthetic base drilling mud (SBM), Gas based drilling mud (GBM) and Nano based drilling mud, are determined by the fluid behaviour when it is subjected to shear stress. In this experiment, additives such as Ginger, Cocoyam and Xanthan Gum were subjected to a time constraint of five, ten and fifteen minutes. Results obtained showed that as mixing time increased for Ginger the plastic viscosity which was 40cP at five minutes mixing time decreased, Gel strength was relatively high and yield point was 120 lb/100ft2 at ten minutes mixing time. For Cocoyam the Gel strength increased, Plastic viscosity was averagely high at 42Cp and relatively stable and the yield point increased in less amounts but was more at five minutes mixing time at 41lb/100ft2 For Xanthan Gum the Gel strength and yield point increased, yield point was 142lb/100ft2 at fifteen minutes mixing time and the plastic viscosity was 46Cp at ten minutes and decreased at fifteen minutes. Based on the foregoing, Ginger possesses the best thixotropic qualities, is much more suitable for cleaning beneath the bit and It will suspend cuttings much easier than Cocoyam and Xanthan Gum. Although cocoyam has a higher rate of gelation than ginger and xanthan gum which makes it suitable for short quiescent period of time and for hole cleaning purposes. 

Keyword: Mixing time, Rheological properties, Water based mud, Cocoyam and Xanthan gum

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