High Temperature and High Pressure Rheology of Oilwell Cement Slurries

Kellingray, Daryl; Greaves, Christopher; Dallimer, R P

doi:10.4324/9780203473290_chapter_17

Cited by 3 publications

(2 citation statements)

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“…Pressure has been found to have a less significant influence on the rheological properties of OWC slurries compared to that of temperature (Guillot, 2006;Kellingray et al, 1990;Ravi and Sutton, 1990). Therefore, the rheological properties of cement slurries having water/cement (w/ c) ratio of 0 .…”

Section: Introductionmentioning

confidence: 96%

Artificial intelligence model for rheological properties of oil well cement slurries incorporating SCMs

Shahriar¹,

Nehdi²

2012

Advances in Cement Research

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In this study, an artificial intelligence model has been developed to predict the rheological properties of oil well cement (OWC) slurries incorporating supplementary cementitious materials (SCM) such as metakaolin (MK), silica fume (SF), rice husk ash (RHA) or fly ash (FA). An experimental study has been carried out to create the database used for training the model. OWC slurries having a water-to-binder ratio of 0 . 44 along with a new-generation, polycarboxylate-based, high-range water-reducing admixture (PCH) were prepared. They had 5 to 15% partial replacement of API class-G OWC by MK, SF, RHA or FA. The rheological properties of the slurries were investigated at different temperatures in the range 23 to 608C using an advanced shear-stress/shear-strain controlled rheometer.Experimental data thus obtained were used to develop a predictive model based on feed-forward back-propagation artificial neural networks. The developed model could effectively predict the effect of key variables such as temperature, dosage of SCM and dosage of PCH on the rheological properties of OWC slurries with an absolute error of less than 7%. The developed model could also effectively predict the rheological properties of new slurries designed within the range of input parameters of the experimental database used in the training process.

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Section: Introductionmentioning

confidence: 96%

Artificial intelligence model for rheological properties of oil well cement slurries incorporating SCMs

Shahriar¹,

Nehdi²

2012

Advances in Cement Research

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“…Experimental studies [6,7] showed that compared to temperature effects, pressure effects can be neglected and that the rheological properties remain unchanged at elevated temperatures except for changes in material constants. The rheological parameters n and k for the power-law fluid were determined in a concentric viscometer following API specifications at five different temperatures.…”

Section: Flow Of Fiber-reinforced Cement Slurriesmentioning

confidence: 99%

Flow of fiber-reinforced cement slurries at elevated temperatures

Wang¹,

Meyer²

2001

Computational Fluid and Solid Mechanics

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Cement slurries are used for the construction of oil wells as deep as 30,000 ft (9,000 m).The severe performance requirements for such materials have prompted the search for appropriate fiber reinforcement to improve the slurry's tensile strength, impact resistance, and fracture toughness, without decreasing its pumpability. A continuum theory for dilute suspensions of large-aspect-ratio particles is applied to the flow of fiber suspensions in a simplified three-dimensional fluid flow. The fluid itself is modeled as a non-Newtonian fluid, obeying the power law. A finite element analysis was carried out to investigate the velocity profile for a constant pressure drop of a fiber-reinforced cement slurry through an eccentric annulus at elevated temperatures. The material constants were determined in an experimental test program reported elsewhere.

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Rheology of Fresh Cement and Concrete

Banfill¹

1991

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Cement-based materials are of enormous technological importance and their satisfactory performance depends on being able to transport and mould them in the freshly mixed state. This article describes the rheology of fresh cement, mortar, concrete and related products in the context of practical situations, and deals with testing and measurement, together with the main features of their behaviour. It explores the links between rheology and technology, and identifies areas where these are weak and could benefit from further experimental and computational effort.

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High Temperature and High Pressure Rheology of Oilwell Cement Slurries

Cited by 3 publications

References 0 publications

Artificial intelligence model for rheological properties of oil well cement slurries incorporating SCMs

Artificial intelligence model for rheological properties of oil well cement slurries incorporating SCMs

Flow of fiber-reinforced cement slurries at elevated temperatures

Rheology of Fresh Cement and Concrete

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