The ability of sodium metasilicate pentahydrate to adjust the compatibility between synthetic Fluid Loss Additives and Retarders applying in oil well cement

Cao, Lei; Guo, Jintang; Tian, Jianhua; Hu, Miaomiao; Guo, Chun Fei; Yang, Xu; Fan, Jinjie

doi:10.1016/j.conbuildmat.2017.08.185

Cited by 30 publications

(5 citation statements)

References 40 publications

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“…A perfecting fluid loss control layer instead. Besides, PVAGB accelerated the formation of Ca 2+ hydrating products, which possibly improved the compatibility of FLA A chains to cement components [31]. Furthermore, due to absorption behaviors of FLA A chains to cationic glyoxal modified hydroxyl groups on PVGAB long chains, more Ca 2+ hydrating cement particles could be absorbed rather than chelating to that of smaller amount and aggregating on limited parts of cement interfaces.…”

Section: Strength/mpamentioning

confidence: 99%

Function Synergy of a New Type of Fluid Loss Additive Formula for Comprehensive Performance of Oil Well Cement

Wang

Zheng³

et al. 2020

MSF

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With 2-acrylamido-2-methylpropanesulfonic acid (AMPS) units on polymeric additive, additive showed high effectiveness used for oilwell cement. However, due to chemical absorption and chelation mechanism of AMPS units to Ca2+ hydrating cement particles, adding of AMPS type additives caused delay of cement hydration process. In this research, AMPS type fluid loss additive, named as FLA A additive, was studied for its hydration delay side effect to class G Portland cement. Furthermore, polyvinyl alcohol (PVA) polymer, modified by glyoxal and boric acid, called as PVAGB was used as a synergistic functional additive to AMPS type polymer fluid loss additive to research on hydration delay problem of AMPS type additive to cement and the improvement for the effectiveness of AMPS type fluid loss additive. When AMPS type additive showed functional drawbacks, with more disordered chemical absorption and chelation behaviors to Ca2+ hydrated cement particles rather than constituting a completed and superior fluid loss control system, and this kind of modified PVA polymer was utilized for making up its failure. New compound additive formula, PVAGB/FLA A fluid loss additive formula, was investigated, which showed superior and more stable fluid loss control ability, i.e. about 50 mL at 30°C and 108 mL at 80 °C with just 0.2 % BWOC (weight percentage by weight of cement) PVAGB and 0.5 %BWOC (weight percentage by weight of cement) FLA A addition. In addition, within 28-day curing period, cement samples showed a healthy compressive-strength development with no less than 28MPa after 7-day curing period rather than failure due to cement strength retrogression. With scanning electron microscope (SEM) analysis, PVAGB showed accelerating effect to cement hydration process, in which hexagonal plate Ca(OH)2 crystal and aggregated product of C-S-H gel were formed when compared with pure cement and cement with FLA A additive added.

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Section: Strength/mpamentioning

confidence: 99%

Function Synergy of a New Type of Fluid Loss Additive Formula for Comprehensive Performance of Oil Well Cement

Wang

Zheng³

et al. 2020

MSF

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“…Conventional lightweight cements or water-extended formulations of API Class Portland cements are usually made by adding more water and sufficient material like bentonite [14,24], diatomaceous earth [25], sodium metasilicate [26], expanded perlite, gilsonite [11], and fly ash [27] to lighten the mixture and keep the solids from separating. In oilwell cement, bentonite is the most former additive utilized to reduce the slurry weight and enhance its volume [24,28], with a high availability in the study area.…”

Section: Conventional Lwc Slurries In Low-temperature Conditionsmentioning

confidence: 99%

Oil-well lightweight cement slurry for improving compressive strength and hydration rate in low-temperature conditions

Mozaffari

Rahmani

Piroozian

et al. 2022

Construction and Building Materials

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“…The degree of hydrate blockage was quantitatively evaluated by Wang and co-workers, , and the thickness of the critical hydrate layer was defined as the standard for pipe blockage. When the thickness of the critical hydrate layer exceeds 0.5, the pipe is considered blocked.…”

Section: Hydrate Slurry Flow Behavior Research In Chinamentioning

confidence: 99%

Status of Natural Gas Hydrate Flow Assurance Research in China: A Review

Shi¹,

Song²,

Duan³

et al. 2021

Energy Fuels

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Natural gas hydrates (NGH) are prone to causing pipeline blockage in flow assurance, attracting considerable attention in the petroleum industry. This work reviews the significant progress in hydrate flow assurance research in China. Gas hydrate structures are briefly introduced to provide a basic understanding, while the application and development of hydrate management strategies in China are summarized. Subsequently, the development and improvement of hydrate phase equilibrium models are presented, which have been widely applied to the practical challenges of flow assurance. Moreover, kinetics research involving hydrate nucleation, growth, and decomposition are summarized, including nucleation mechanisms, induction time, memory effect, hydrate growth at different interfaces, hydrate growth at a microscopic level, and hydrate decomposition under different systems. The current research status of hydrate slurry flow is also analyzed in detail, covering the viscosity and flow resistance of hydrate slurry and the mechanisms of hydrate particle aggregation, deposition, and blockage. In addition, even though the numerical models of hydrate slurry multiphase flow have been sorted out, the accurate quantitative calculations and risk assessments are still in the initial stage, presenting significant room for improvement. Although substantial research progress has been made in China regarding gas hydrate flow assurance, considerable effort should be devoted to further understanding the intrinsic mechanism work to improve the applicability of various models. This review discusses the current developments, existing problems, and future prospects in the various basic hydrate flow assurance fields in China. It aims to provide readers with an overview of hydrate flow assurance research in China, hoping to provide a reference for developing this field.

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The ability of sodium metasilicate pentahydrate to adjust the compatibility between synthetic Fluid Loss Additives and Retarders applying in oil well cement

Cited by 30 publications

References 40 publications

Function Synergy of a New Type of Fluid Loss Additive Formula for Comprehensive Performance of Oil Well Cement

Function Synergy of a New Type of Fluid Loss Additive Formula for Comprehensive Performance of Oil Well Cement

Oil-well lightweight cement slurry for improving compressive strength and hydration rate in low-temperature conditions

Status of Natural Gas Hydrate Flow Assurance Research in China: A Review

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