Investigating the Critical Velocity of Cement Slurry with Contamination and Applying the Results to Improve Primary Cementing Job Design
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International Journal of Recent Engineering Science (IJRES) |  |
| © 2024 by IJRES Journal | ||
| Volume-11 Issue-2 |
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| Year of Publication : 2024 | ||
| Authors : William Ejuvweyerome Odiete |
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| DOI : 10.14445/23497157/IJRES-V11I2P108 |
How to Cite?
William Ejuvweyerome Odiete, "Investigating the Critical Velocity of Cement Slurry with Contamination and Applying the Results to Improve Primary Cementing Job Design," International Journal of Recent Engineering Science, vol. 11, no. 2, pp. 60-65, 2024. Crossref, https://doi.org/10.14445/23497157/IJRES-V11I2P108
Abstract
Investigating the critical velocity of cement slurry with contamination, gives an insight as to the changes to expect down-hole when cement slurry is contaminated with mud. It enables the engineer to know whether the cement slurry will still be in its design flow regime when contaminated. By comparing the annular velocity of the cement slurry with its critical velocity at any particular displacement rate during the design stage, it can be determined whether the annular velocity of the cement slurry will exceed its critical velocity for turbulent flow placement, especially when contaminated with mud. Thus enabling cementing engineers to proactively determine whether displacing the cement slurry in turbulent flow is achievable or not achievable during primary cementing. It also aids the engineer in deciding to pump enough pre-flushes in the turbulent flow ahead of the cement slurry. Results revealed that the critical velocity of the cement slurry increased with contamination at any particular temperature, as evidenced by the critical velocity of the contaminated cement slurries. Results showed that the mathematical models generated for the contaminated cement slurries could be used to predict the variation of the critical velocity of contaminated cement slurries with temperature, as evidenced by the high values of the regression coefficient, R2 obtained.
Keywords
Primary cementing, Flow regime, Cementing job design, Cementing job execution, Cement slurry contamination.
Reference
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