A Laboratory Study on Oilwell Cement and Electrical Conductivity

Backe, K.R.; Lyomov, S.K.; Lile, Ole Bernt

doi:10.2118/56539-ms

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…Cementing is an essential operation during construction of an oil or gas well [1]. The quality of cement behind a casing plays a vital role during drilling and has a serious impact on the secondary cementing, workover and stimulation operation [2].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Nanosilica on Cement Matrix Permeability in Oil Well to Decrease the Pollution of Receptive Environment

Ershadi¹,

Ebadi²,

Rabani³

et al. 2011

IJESD

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Abstract-Nanosilica is the extremely fine silica that has been used for years as cement admixture both in the oil field and in construction and civil engineering industries. Because of its extremely fine nature and high reactivity pozzolanic material, nanosilica has been used to improve slurry impermeability and the mechanical properties of the hardened material. Using nanosilica in slurry composition, improved reological and mechanical properties of cement slurry and set cement. With the adoption of very fine silica particles in cement matrix, porosity and permeability significantly were declined 33.3% and 99% respectively and compressive strength grew from 1486 psi to 3801 psi. Finally the proper amount of nanosilica in slurry composition is presented. The novel slurry formulation with low porosity and permeability and high compressive strength, is suitable in zones where the possibility of gas migration is very high.Index Terms-nanosilica; cement class G; porosity and permeability; slurry formulation I.

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Section: Introductionmentioning

confidence: 99%

The Effect of Nanosilica on Cement Matrix Permeability in Oil Well to Decrease the Pollution of Receptive Environment

Ershadi¹,

Ebadi²,

Rabani³

et al. 2011

IJESD

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“…Some additional results can be found in another paper. 18 Theoretical Background Measurement Principle. The principle of measuring conductivity, in which alternating current is transmitted through the cement slurry by two metal electrodes, is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Characterizing Curing Cement Slurries by Electrical Conductivity

Backe

Lile

Lyomov

2001

SPE Drilling &Amp; Completion

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Electrical conductivity is a parameter that can be used to monitor the entire hardening process of oilwell cement slurries. The theoretical relationship among conductivity, porosity, cement chemistry, and ion content is discussed. The theory is confirmed by experiments; the decline in the slurry conductivity is primarily a function of porosity decrease and, thus, the degree of hydration. The applied results show that the electrical conductivity of curing slurries reflects strength development and that rapid hydration will reduce the risk of gas migration.

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“…The cement powder and RHA was premixed and thereafter added to water and others additive in the mixer at the highly speed for 5 minutes. In this study, the ratio of water/cement 0.5 was used [17].…”

Section: Methodolodymentioning

confidence: 99%

Green Nanoparticle Oil Well Cement from Agro Waste Rice Husk Ash

Alias¹,

Nawang

Ghazali³

et al. 2014

AMR

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Cement is an important part in oil and gas well completion. A high quality of cement is required to seal hydraulic pressure between casing and borehole formation. Cement additives were used to enhance the cement properties such as thickening time, compressive strength, porosity and permeability of the cement. Currently, the commercial additives were imported and the price is keep increasing year by year. Therefore, the researchers were continuously looking for potential additives such as nanoparticle to improve the cement properties. This paper presents the effect nanosilica on compressive strength and porosity of oil well cement type G. In this study, two type of nanosilica were used, synthesis nanosilica from rice husk ash (RHA) and commercial nanosilica. The synthesized nanosilica was characterized using fourier transform infrared spectroscopy (FTIR), X-ray flouresece (XRF) and Field Emission Scanning Electron Microscopy (FESEM). All the experiments were conducted using API standard procedures and specifications. Based on the results, compressive strength of cement slurries was improved from 2600 psi to 2800 psi for 8-hours curing, when the amount of nanosilica increased from 0 wt% to 1.5 wt%. Besides that, incorporation of nanosilica from RHA into cement formulation resulted in reduction of cement porosity up to 18 % pore volume. Overall, the results showed that the incorporation of nanosilica from RHA improved the oil well cement compressive strength and oil well cement porosity. In conclusion, green nanosilica from RHA can be a potential candidate to replace the commercial nanosilica to enhance the oil well cement properties as well as to prevent the migration of undesirable fluid which can lead to major blowout.

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A Laboratory Study on Oilwell Cement and Electrical Conductivity

Cited by 3 publications

References 8 publications

The Effect of Nanosilica on Cement Matrix Permeability in Oil Well to Decrease the Pollution of Receptive Environment

The Effect of Nanosilica on Cement Matrix Permeability in Oil Well to Decrease the Pollution of Receptive Environment

Characterizing Curing Cement Slurries by Electrical Conductivity

Green Nanoparticle Oil Well Cement from Agro Waste Rice Husk Ash

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