Effects of additive concentrations on cement rheology at differenttemperature conditions

Princewill Ikpeka, Ugochukwu Benedict, Davida Utojiuba, Jude Odo, Godson Uzuegbu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Previous studies suggest that the rheology of cement slurries used during oil well cementing operations is an explicit function of temperature, additive type & concentration and cement grade. This study analyzes the effect of these factors on a water based mud (WBM). 27 experiments were conducted by varying three additive concentrations; retarders, fluid loss additives and dispersants. Shear rate and stress were then experimentally determined at varying temperature and concentration, while the plastic viscosity (PV) and yield point (YP) were determined analytically. The slurries were conditioned as set out in API RP 10B-2.Linear regression was used to build models describing the effect of temperature and additive concentration on PV and YP of the cement slurry. Results from the analysis reveal that for a temperature increase of125% and Retarder concentration increase of 200%, there were significant decline in PV (-41%) and YP(-44%). Whereas increasing the Fluid loss additive by 100% caused a significant increase in YP (+51%) and relatively insignificant increase in PV (+4.4%). This study concludes that the coupled effect of increasing temperature and retarder concentrations of cement slurries has a significant negative impact on both the YP and PV.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2020, NAIC 2020
PublisherSociety of Petroleum Engineers (SPE)
Number of pages20
ISBN (Electronic)9781613997857
DOIs
Publication statusPublished - 11 Aug 2020
Externally publishedYes
EventSPE Nigeria Annual International Conference and Exhibition 2020 - Virtual, Online, Nigeria
Duration: 11 Aug 202013 Aug 2020

Publication series

NameSociety of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2020, NAIC 2020

Conference

ConferenceSPE Nigeria Annual International Conference and Exhibition 2020
Abbreviated titleNAIC 2020
CountryNigeria
CityVirtual, Online
Period11/08/2013/08/20

Bibliographical note

Publisher Copyright:
© 2020 Society of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2020, NAIC 2020.All right reserved.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

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