Laboratory Investigation on Gelation Behavior of Xanthan Crosslinked With Borate Intended to Combat Lost Circulation

Mokhtari, Mehdi; Özbayoğlu, A. Murat

doi:10.2523/136094-ms

Cited by 5 publications

(5 citation statements)

References 17 publications

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“…Optimum selection of drilling fluid is a key factor in minimizing drilling time and cost (Mokhtari and Ozbayoglu 2010;Salih et al 2016). Due to cost, environmental issues, water-based drilling fluid is more preferable and attractive option than oil and synthetic fluids for drilling oil and gas wells in sensitive areas where oil base fluids are not desired.…”

Section: Introductionmentioning

confidence: 99%

Improvement in filtration properties of water-based drilling fluid by nanocarboxymethyl cellulose/polystyrene core–shell nanocomposite

Saboori

Sabbaghi

Kalantariasl

et al. 2018

J Petrol Explor Prod Technol

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Since almost all drilling problems directly or indirectly relate to drilling fluid, improvement in drilling fluid significantly enhances drilling operations. Drilling fluid contains base fluid, suspended solid particles and chemicals. Recently, nanoparticles have been widely recommended for improvement in drilling fluid properties. The main purpose of this study was to improve the rheological and filtration properties of water-based drilling fluid through adding new additive carboxyl methyl cellulose (CMC)/polystyrene core-shell nanocomposite. It compares filtration and rheological behavior of CMC, nanoCMC and core-shell nanocomposite. The core-shell nanocomposite was synthesized by miniemulsion polymerization method, and nanoCMC and core-shell nanocomposite were characterized by scanning electron microscope, transmission electron microscopy, particle size analyzer and thermogravimetric analysis. Fluid loss, mud cake thickness, viscosity, weight and pH of drilling fluid with core-shell nanocomposite additive were compared with conventional CMC (bulk CMC) and nanoCMC particles. Results showed a significant decrease in mud cake thickness and fluid loss when the core-shell nanocomposite was used, as compared with conventional CMC and nanoCMC. Viscosity of three additives has same trend with insignificant change while less yield point is obtained for drilling fluid containing core-shell nanocomposites. Mud weight and pH were almost the same for all three additives. Thus, the core-shell nanocomposite can be an alternative additive to control mud cake thickness and fluid loss while maintaining other main properties in an acceptable range.

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Section: Introductionmentioning

confidence: 99%

Improvement in filtration properties of water-based drilling fluid by nanocarboxymethyl cellulose/polystyrene core–shell nanocomposite

Saboori

Sabbaghi

Kalantariasl

et al. 2018

J Petrol Explor Prod Technol

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“…With an increasing time, the viscosity of the system keeps basically unchanged firstly, then increases rapidly, and finally tends to be stable. The gelation process of polymer gel experienced longer periods of induction stage, cross-linking stage and stabilization stage [ 6 , 7 ]. According to the research results of Mehdi mokhtari, the gelation time is divided into initial gelation time (IGT) and final gelation time (FGT).…”

Section: Resultsmentioning

confidence: 99%

“…Gelation time and gel strength are the most important performance indicators of polymer gel [ 5 ]. The recent research results on the dynamic gelation process in porous media show that the dynamic gelation process can be divided into three stages: induction stage, cross-linking stage and stabilization stage [ 6 , 7 ]. However, the gelled liquid is sheared when it passes through the rock pore throat, which results in significant changes in dynamic gelation time, gel strength and gel speciation.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Shear Rate on Dynamic Gelation of Phenol Formaldehyde Resin Gel in Porous Media

Tang

et al. 2022

Gels

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Polymer gel is the most widely used plugging agent in profile control, whose formula and injected speed are very important process parameters. It is very significant to study the effect of shear rates on the dynamic gelation of polymer gel in porous media for selecting suitable formula and injection speed. Taking the phenol formaldehyde resin gel with static gelation time of 21 h in ampoule bottle as research objective, it was studied the dynamic gelation process and subsequent water flooding in porous media under different injected speeds by a circulated equipment. The results shown that final dynamic gelation time is 2.4 times longer than the static gelation time in porous media. The gel particles are formed and mainly accumulated in the near wellbore zone after dynamic gelation. Injection speed has little effect on the dynamic gelation time in porous media, but has a great effect on the gel strength. The effect of injection speed on dynamic gel strength is evaluated by established the quantitative relationship between shear rate and dynamic gel strength. According to subsequent water flooding results, gel particles have certain plugging capacity in the near wellbore zone. The plugging ability declines obviously with an increasing injection speed. The experimental results provide theoretical support for the successful application of polymer gel used in profile control.

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“…In this paper, the gelation time, which is divided into Initial Gelation Time (IGT) and Final Gelation Time (FGT), was determined by measuring viscosity [3]. IGT is the time of sudden increase in viscosity.…”

Section: Static Gelation In Ampoule Bottlesmentioning

confidence: 99%

“…According to Sydansk's gel-strength code, the gel strength is divided into several levels to determine gelation time quickly and effectively. Mokhtari et al [3] divided gelation time into Initial Gelation Time (IGT) and Final Gelation Time (FGT) with the method of measuring apparent viscosity versus time, and the history of viscosity change during the process of gelation could be recorded. Gao et al [4] measured the storage modulus and loss modulus and obtained the gelation time by the Winter-Chambon criterion [5].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Gelation of HPAM/Cr(III) under Shear in an Agitator and Porous Media

Wang

Zhang³

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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and available online here Cet article fait partie du dossier thématique ci-dessous publié dans la revue OGST, Vol. 70, n°6, pp. 909-1132 et téléchargeable ici D o s s i e rOil & Gas Science and Technology -Rev. IFP Energies nouvelles, Vol. 70 (2015), No. 6, pp. 909-1132 Copyright © 2015, IFP Energies nouvelles > Editorial -Enhanced Oil Recovery (EOR), Asphaltenes and HydratesÉditorial -EOR «récupération assistée du pétrole», Asphaltènes et Hydrates D. Langevin and F. Baudin ENHANCED OIL RECOVERY (EOR) > HP-HT Drilling Mud Based on Environmently-Friendly Fluorinated ChemicalsBoues de forage HP/HT à base de composés fluorés respectueux de l'environnement Re´sume´-Ge´lification dynamique de HPAM/Cr(III) sous cisaillement dans un agitateur et en milieu poreux -La fermeture des eaux et le controˆle du profil constituent l'une des technologies les plus importantes pour l'ame´lioration de la re´cupe´ration du pe´trole. Afin d'assurer le succe`s de cette technologie, la cle´est de de´terminer pre´cise´ment le temps de ge´lification et la re´sistance du gel au cours de l'e´coulement du gel en milieu poreux. Le syste`me HPAM (Hydrolyzed PolyAcrylaMide) et le syste`me redox (bichromate de sodium et sulfite de sodium) sont commune´ment utilise´s ; leur temps de ge´lification statique en ampoules et en milieu poreux ont e´te´de´termine´s, ainsi que le temps de ge´lification dynamique dans un agitateur et en milieu poreux. Le taux de cisaillement a e´te´conside´re´comme l'un des principaux facteurs affectant le temps de ge´lification. Les re´sultats ont montre´que le temps de ge´lification statique en milieu poreux e´tait bien plus long que celui en ampoules. Le temps de ge´lification initial (IGT) en milieu poreux e´tait deux ou trois fois plus e´leve´que celui en ampoules, alors que le temps de ge´lification final en milieu poreux e´tait de six fois celui en ampoules. Sous cisaillement dans un agitateur, le proce´de´de ge´lification a e´te´divise´en quatre phases : induction, augmentation brusque, stabilite´et diminution. Avec l'augmentation du taux de cisaillement, le temps de ge´lification a e´te´prolonge´et la re´sistance du gel a diminue´. Un taux de cisaillement critique de la ge´lification a e´te´observe´, au-dessus duquel aucun gel ne se formait. Le cisaillement n'avait quasiment aucune influence sur la re´sistance du gel au cours du stade d'induction, mais dans le proce´de´d'augmentation brusque, le cisaillement pouvait rapidement de´grader la re´sistance du gel. Le temps de ge´lification dynamique en milieu poreux e´tait bien plus long que celui de la ge´lification statique en milieu poreux et en ampoules. Lorsque les concentrations de HPAM et de RS (Redox System) e´taient augmente´es, l'IGT de la ge´lification dynamique en milieu poreux e´tait re´duit.Abstract -Dynamic Gelation of HPAM/Cr(III) under Shear in an Agitator and Porous MediaWater shutoff and profile control is one of the most important technologies to enhance oil recovery. To ensure the success of this technology, the key is to accurately determine...

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Laboratory Investigation on Gelation Behavior of Xanthan Crosslinked With Borate Intended to Combat Lost Circulation

Cited by 5 publications

References 17 publications

Improvement in filtration properties of water-based drilling fluid by nanocarboxymethyl cellulose/polystyrene core–shell nanocomposite

Improvement in filtration properties of water-based drilling fluid by nanocarboxymethyl cellulose/polystyrene core–shell nanocomposite

The Effect of Shear Rate on Dynamic Gelation of Phenol Formaldehyde Resin Gel in Porous Media

Dynamic Gelation of HPAM/Cr(III) under Shear in an Agitator and Porous Media

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