Effect of carboxymethylcellulose on colloidal properties of calcite suspensions in drilling fluids

Fagundes, Keila Regina Santana; Luz, Railson Carlos da Souza; Fagundes, Fábio Pereira; Balaban, Rosângela de Carvalho

doi:10.1590/0104-1428.11817

Cited by 25 publications

(9 citation statements)

References 28 publications

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“…The data obtained using a laser diffraction particle size analyzer on the size distribution of the formed CaCO 3 and CaSO 4 crystals showed that in the presence of NaCMC, there was a decrease in the average crystal size by ~7.4 μm for CaCO 3 and by 17.2 μm for CaSO 4 , as well as displaying the formation of a narrower interval of their distribution, from 1.50 to 7.52 microns for CaCO 3 and from 1.15 to 11.8 μm for CaSO 4 ( Figure 13 and Figure 14 ) [ 110 ]. The wider range of CaCO 3 particle size distributions in the presence of NaCMC was probably due to the formation of polysaccharide complexes with CaCO 3 crystals [ 131 ].…”

Section: Polysaccharides As the Basis Of Scale Inhibitorsmentioning

confidence: 99%

Polysaccharides as Effective and Environmentally Friendly Inhibitors of Scale Deposition from Aqueous Solutions in Technological Processes

et al. 2023

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In this paper, we consider natural and modified polysaccharides for use as active ingredients in scale deposition inhibitors to prevent the formation of scale in oil production equipment, heat exchange equipment, and water supply systems. Modified and functionalized polysaccharides with a strong ability to inhibit the formation of deposits of typical scale, such as carbonates and sulfates of alkaline earth elements found in technological processes, are described. This review discusses the mechanisms of the inhibition of crystallization using polysaccharides, and the various methodological aspects of evaluating their effectiveness are considered. This review also provides information on the technological application of scale deposition inhibitors based on polysaccharides. Special attention is paid to the environmental aspect of the use of polysaccharides in industry as scale deposition inhibitors.

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Section: Polysaccharides As the Basis Of Scale Inhibitorsmentioning

confidence: 99%

Polysaccharides as Effective and Environmentally Friendly Inhibitors of Scale Deposition from Aqueous Solutions in Technological Processes

et al. 2023

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“…Yield: 94.3%. 1 H NMR (400 MHz, D 2 O): 5.62-5.75 (m, 1H, CH=C), 4.89∼5.07 (m, 2H, C=CH 2 ), 3.75∼3.76 (d, 6H, CH 2 -O), 3.60 (t, 2H, -CH-C=C), 3.33 (t, 3H, -OH), 3.04∼3.06(t, 6H, N-CH 2 -C-OH); IR (KBr), /cm -1 :3360, 2920, 1630, 1400, 1080, 900, 520.…”

Section: Synthesis Of Polymeric Monomer Thdabmentioning

confidence: 99%

“…Drilling fluids are multicomponent systems used to aid the removal of cuttings from a borehole, and subject to a number of requirements to ensure a safe drilling operation [1] . The exploitation of unconventional reservoir such as shale gas has raised the attention of the world while the excessive depletion of conventional reservoir.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and performance of AM/SSS/THDAB as clay hydration dispersion inhibitor

Wang

Liu

et al. 2019

Polímeros

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In this paper, a novel zwitterionic copolymer AM/SSS/THDAB clay hydration dispersion inhibitor was synthesized by copolymerization of tris hydroxyethyl diallyl ammonium bromide (THDAB), sodium p-styrene sulfonate (SSS) and acrylamide (AM) initiated in an aqueous solution. The copolymer was characterized by FT-IR, GPC, TGA-DSC and SEM. Results demonstrated that molecular weight of AM/SSS/THDAB was 43674 g/mol and its temperature resistance ability was up to 225 °C. Evaluation experiments showed that AM/SSS/THDAB has an excellent clay hydration inhibitive performance. Methods including particle size analysis and SEM were utilized to study its dispersion inhibition mechanism by using sodium montmorillonite (Na-MMT). Results indicated that the micro-structure of Na-MMT has been successfully changed by AM/SSS/THDAB. In a word, the superior inhibition property makes the novel clay hydration dispersion inhibitor promised in water-based drilling fluids.

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“…Besides, the presence of substituents with -CH 2 -COOH groups in the cellulose chain produces a separation of the polymeric chains and allows water penetration, giving the CMC a cold-water solubility (Käistner et al 1997;LOPEZ et al 2015;Fagundes et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Both minerals are added to the drilling fluid to adjust the multicomponent system density (weighting materials) and to act as a filtrate reducer (Fattah and Lashin 2016). The adsorption and the interaction mechanisms for CMC and calcite particles were studied by Backfolk et al (2002) and Fagundes et al (2018), which show an interaction between the CMC anionic groups with the Lewis acid sites on the solid surface, by the formation of CMC − Ca 2+ complexes. The resulting electrical charge on the mineral surface is strongly dependent on the pH of the solution, due to the presence of ionic species which contribute to the surface charges (Backfolk et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Influence of solids concentration and solid/polymer interaction on the apparent viscosity of drilling fluids

Saide

Oliveira

Nascimento

et al. 2020

Braz. J. Chem. Eng.

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Drilling fluids perform several functions such as lubrication and cooling of the drill bit, carrying the cuttings to the surface and also maintaining the stability of the well. The physicochemical characteristics of solid particles affect the drilling fluid properties, such as density, chemical composition, and surface charge. In this research, the effects of concentration, surface charge, and adsorption of different solid additives (Barite, Calcite, and Glass spheres) in carboxymethylcellulose (CMC) aqueous solutions were evaluated to quantify its influence on the apparent viscosity of drilling fluids. A study of the polymer hydration time was also carried out. The suspensions were characterized and analyzed by the rheological parameters, the morphology, the surface charge, and the chemical composition. The results showed that suspensions with solids concentration higher than 25% (m/v) presented an increase of the frictional effect of solids, leading to a significant increase in the apparent viscosity of the suspensions. The morphology of the glass spheres facilitated the fluid flow, leading to the lowest apparent viscosity among the suspensions. Ca 2+ ions from calcite solids reduced the energy barrier against flocculation, making the apparent viscosity of calcite suspensions the highest. The barite suspensions showed the highest zeta potential value (in modulus) among all suspensions. The appearance of two bands related to the carbonyl in the FTIR spectrum of barite suspensions proves chemical adsorption with the CMC polymer, justifying its lower apparent viscosity compared to calcite suspensions.

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Effect of carboxymethylcellulose on colloidal properties of calcite suspensions in drilling fluids

Cited by 25 publications

References 28 publications

Polysaccharides as Effective and Environmentally Friendly Inhibitors of Scale Deposition from Aqueous Solutions in Technological Processes

Polysaccharides as Effective and Environmentally Friendly Inhibitors of Scale Deposition from Aqueous Solutions in Technological Processes

Synthesis and performance of AM/SSS/THDAB as clay hydration dispersion inhibitor

Influence of solids concentration and solid/polymer interaction on the apparent viscosity of drilling fluids

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