Cement slurry optimization and assessment of additives according to a proposed plan

Velayati, Arian; Tokhmechi, Behzad; Soltanian, Hamid; Kazemzadeh, Ezatallah

doi:10.1016/j.jngse.2015.01.037

Cited by 34 publications

(20 citation statements)

References 3 publications

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“…Most of the work done on this topic either by researching effectively spacer fluid to prevent contamination or adding appropriate additives in cement slurry and drilling fluid to improve the compatibility between cement slurry and mud (Brothers and deBlanc, 1989;Skalle et al, 1991;Harder et al, 1993a,b;Fleming et al, 1998;Salehi et al, 2009;Budiawan et al, 2014;Shahvali et al, 2014;He et al, 2014;Farahani et al, 2014;Velayati et al, 2015;Teodoriu and Asamba, 2015;Ariyanti et al, 2015). However, OBMs are difficult to clear because of their strong adhesion to the casing and well.…”

Section: Introductionmentioning

confidence: 99%

Contamination of cement slurries with diesel-based drilling fluids in a shale gas well

et al. 2015

Journal of Natural Gas Science and Engineering

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Section: Introductionmentioning

confidence: 99%

Contamination of cement slurries with diesel-based drilling fluids in a shale gas well

et al. 2015

Journal of Natural Gas Science and Engineering

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“…With increasing PG dosage and decreasing OS, the e ects of organics on cement hydration in the mixtures was gradually weakened. On the other hand, the PG in the mixtures is an inert material, mainly acting as a ller [20][21][22]. Additionally, a small amount of PG can react with other binders to produce Aft, which contributes to improving the compressive strength of the samples [23,24].…”

Section: Compressive Strength Resultsmentioning

confidence: 99%

Recycling of Oily Sludge as a Roadbed Material Utilizing Phosphogypsum‐Based Cementitious Materials

Xiao

Zhang

2019

Advances in Civil Engineering

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Oily sludge is a hazardous waste containing emulsified petroleum hydrocarbons, water, heavy metals, and solid particles. The objective of this work is to employ solidification/stabilization (S/S) techniques to utilize oily sludge as a roadbed material with ordinary Portland cement (OPC), fly ash (FA), and silica fume (SF) as binders and phosphogypsum (PG) as a stabilizer. The efficacy of the S/S process is assessed mainly through an unconfined compressive strength (UCS) test and a toxicity leaching test. Road performance, including water stability, freeze-thaw resistance, and volume stability, is also tested on the solidified samples. The mineralogical compositions, microstructures, and pore structure are characterized through X-ray diffractometry (XRD), scanning electron microscopy (SEM), and mercury intrusion porosimetry (MIP). The results show that the addition of 20% binders (OPC : FA : SF = 1 : 0.7 : 0.8) in combination with phosphogypsum to the oily sludge not only increases the 28-day compressive strength of the solidified samples and remarkably decreases the release of heavy metals but also refines the pore structure and compacts the microstructure. The solidified body had sufficient strength and good water stability performance, freeze-thaw resistance, and volumetric stability. This solidification/stabilization (S/S) process, which combines oily sludge treatment and phosphogypsum resource utilization, significantly enhances environmental protection and renders the solidified product economically profitable.

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“…Failure of the zonal isolation and flow of the formation fluids penetrating the cement can cause disasters, financial loss, and other serious consequences. Thus, understanding the behavior of the cement is one of the key factors in designing a gas resistant cement column [4]. Cement, in general, is mixed on the rig before being pumped into the well [5].…”

Section: Introductionmentioning

confidence: 99%

A Review of Rheological Modeling of Cement Slurry in Oil Well Applications

et al. 2020

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The rheological behavior of cement slurries is important in trying to prevent and eliminate gas-migration related problems in oil well applications. In this paper, we review the constitutive modeling of cement slurries/pastes. Cement slurries, in general, behave as complex non-linear fluids with the possibility of exhibiting viscoelasticity, thixotropy, yield stress, shear-thinning effects, etc. The shear viscosity and the yield stress are two of the most important rheological characteristics of cement; these have been studied extensively and a review of these studies is provided in this paper. We discuss the importance of changing the concentration of cement particles, water-to-cement ratio, additives/admixtures, shear rate, temperature and pressure, mixing methods, and the thixotropic behavior of cement on the stress tensor. In the concluding remarks, we propose a new constitutive model for cement slurry, considering the basic non-Newtonian nature of the different models.

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Cement slurry optimization and assessment of additives according to a proposed plan

Cited by 34 publications

References 3 publications

Contamination of cement slurries with diesel-based drilling fluids in a shale gas well

Contamination of cement slurries with diesel-based drilling fluids in a shale gas well

Recycling of Oily Sludge as a Roadbed Material Utilizing Phosphogypsum‐Based Cementitious Materials

A Review of Rheological Modeling of Cement Slurry in Oil Well Applications

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