Cellulose nanofibril-polymer hybrids for protecting drilling fluid at high salinity and high temperature. (1st February 2020)

• Record Type: Journal Article
• Authors: Liu, Xiongli; Yuan, Zhaoyang; Wang, An; Wang, Chunping; Qu, Jialei; Chen, Bin; Wei, Bing; Kapu, Nuwan Sella; Wen, Yangbing
• Is Part Of: Carbohydrate polymers. Volume 229(2020)
• Publication Date: 2020-02-01
• Subjects: AIBA 2, 2'-Azobis (2-methylpropionitrile) dihydrochloride (V-50) -- AMPS 2-Acrylanmido-2-methylpropanesulfonic acid -- API American Petroleum Institute -- AV apparent viscosity -- CNFs Cellulose nanofibrils -- DMA N, N-Dimethylacrylamide -- DTG derivative thermogravimetric curve -- FLAPI fluid loss filtration loss tested by American Petroleum Institute standard -- HEA 2-hydroxyethyl acrylate -- NaCl sodium chloride -- PADH poly-AMPS-DMA-HEA -- PADHC poly-AMPS-DMA-HEA-CNFs -- PADHC-Fe3+-x poly-AMPS-DMA-HEC-CNFs-Fe3+-x. x refers to the loading of HEA (hybrid product) -- PV plastic viscosity -- SEM scanning electron microscopy -- TG thermogravimetric -- T0.9 decomposition temperatures corresponding to 0.9, residual mass ratios -- T0.8 decomposition temperatures corresponding to 0.8 residual mass ratios -- T0.5 decomposition temperatures corresponding to 0.5 residual mass ratios -- Tmax the maximum decomposition temperature -- UV ultraviolet -- VLR viscosity loss rate -- YP yield point; Cellulose nanofibril -- Drilling engineering -- Filtrate reducer -- Hybrid polymer -- Salt tolerance -- Thermal stability -- Ternary copolymerization; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2019.115465
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Cellulose nanofibril-based filtrate reducer was produced by a green method. Cellulose nanofibril-PADHC showed excellent tolerance to 32% salt concentration. The obtained product reduced drilling fluid loss by approximately 75%. Copolymer fabrication procedure is simple and environmentally friendly. Abstract: A copolymer (PADH) was first synthesized from 2-acrylamido-2-methylpropane sulfonic acid (AMPS), N, N- dimethylacrylamide (DMA), and 2-Hydroxyethyl acrylate (HEA) by UV-induced polymerization. Subsequently, cellulose nanofibrils (CNFs) were introduced into the copolymer through ironic cross-linking between ferric ions and carboxylate groups as well as sulfonic acid groups to produce a hybrid product (PADHC-Fe 3+ -3). The salt tolerance and thermal stability of the copolymers and the hybrid product were investigated. The results showed that the optimum HEA dosage was 5% (in relation to the total mass of AMPS and DMA). In addition, the fluid loss test showed that the hybrid product PADHC-Fe 3+ -3 had excellent salt tolerance (maximum tolerance: 26.5 wt% NaCl and 32 wt% combined salts) and thermal stability (maximum tolerance: 200 °C). The SEM images indicated that the filter cakes became denser after the addition of PADHC-Fe 3+ -3. The results demonstrated that the cross-linked hybrid product was very promising for industrial application in drilling engineering.