The Effects of Increasing Temperature and Pressure on Cement Slurries Treated with Ughelli Sands

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Author(s) P.N. Onwuachi-Iheagwara | K. I. Idigbe
Pages 741-746
Volume 2
Issue 10
Date October, 2013
Keywords Ughelli Sands, Silica Flour, Cement Retrogression, Niger Delta

In a series of experiments carried out at the material laboratories in the Mechanical Engineering Laboratory of the University of Benin, Edo state, Nigeria, Ughelli sands were progressively used to substitute the imported silica flour and the effect on compressive strength analysed and noted. Results showed that the Ughelli sands can be a substitute for the more expensive silica flour commonly used by the drilling companies in Nigeria to combat the effect of the cement retrogression in High Pressure High Temperature (HP HT) terrain in the country, especially in the Niger Delta Basin. . These sands contain approximately 93 % silica and at over 60 % substitution can be used for HP HT operations in the Niger Delta.

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