Renzhou Meng, Xiujian Xia, Yongjin Yu, Fengzhong Qi, Chi Zhang, Jinsheng Sun, Haige Wang
{"title":"油基钻井液去除纳米乳液的制备及作用机理","authors":"Renzhou Meng, Xiujian Xia, Yongjin Yu, Fengzhong Qi, Chi Zhang, Jinsheng Sun, Haige Wang","doi":"10.1007/s00396-025-05457-w","DOIUrl":null,"url":null,"abstract":"<div><p>This study develops an optimized nanoemulsion for efficient oil-based drilling fluid (OBDF) removal, and the unique removal mechanisms of nanoemulsion are studied. Compared to surfactant solutions, the nanoemulsion exhibits enhanced wettability on solid surfaces and lower interfacial tension against oil phases (< 0.1 mN·m<sup>−1</sup>), synergistically facilitating OBDF detachment through three mechanisms: low interfacial tension, wettability enhancement, and disjoining pressure effects. Enhanced emulsification produced monodisperse micron droplets under shear, overcoming Laplace resistance through pre-organized interfacial films. The synergistic combination of enhanced wettability (contact angle reduction to 25.4°) and nanoscale droplet dimensions (147 nm) significantly improves nanoemulsion permeation through OBDF filter cakes. These combined properties improve the removal effect of OBDF, while interfacial bonding strength at cement-casing (3.02 MPa) and cement-formation (2.74 MPa) interfaces matched pristine samples. These elucidated mechanisms provide theoretical guidance for formulating and optimizing nanoemulsion-based flushing fluids, while also facilitating their broader applications in fields such as enhanced oil recovery and environmental remediation.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":520,"journal":{"name":"Colloid and Polymer Science","volume":"303 10","pages":"1895 - 1905"},"PeriodicalIF":2.3000,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Preparation of nanoemulsions for oil-based drilling fluid removal and action mechanism\",\"authors\":\"Renzhou Meng, Xiujian Xia, Yongjin Yu, Fengzhong Qi, Chi Zhang, Jinsheng Sun, Haige Wang\",\"doi\":\"10.1007/s00396-025-05457-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study develops an optimized nanoemulsion for efficient oil-based drilling fluid (OBDF) removal, and the unique removal mechanisms of nanoemulsion are studied. Compared to surfactant solutions, the nanoemulsion exhibits enhanced wettability on solid surfaces and lower interfacial tension against oil phases (< 0.1 mN·m<sup>−1</sup>), synergistically facilitating OBDF detachment through three mechanisms: low interfacial tension, wettability enhancement, and disjoining pressure effects. Enhanced emulsification produced monodisperse micron droplets under shear, overcoming Laplace resistance through pre-organized interfacial films. The synergistic combination of enhanced wettability (contact angle reduction to 25.4°) and nanoscale droplet dimensions (147 nm) significantly improves nanoemulsion permeation through OBDF filter cakes. These combined properties improve the removal effect of OBDF, while interfacial bonding strength at cement-casing (3.02 MPa) and cement-formation (2.74 MPa) interfaces matched pristine samples. These elucidated mechanisms provide theoretical guidance for formulating and optimizing nanoemulsion-based flushing fluids, while also facilitating their broader applications in fields such as enhanced oil recovery and environmental remediation.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":520,\"journal\":{\"name\":\"Colloid and Polymer Science\",\"volume\":\"303 10\",\"pages\":\"1895 - 1905\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-06-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Colloid and Polymer Science\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00396-025-05457-w\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloid and Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s00396-025-05457-w","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Preparation of nanoemulsions for oil-based drilling fluid removal and action mechanism
This study develops an optimized nanoemulsion for efficient oil-based drilling fluid (OBDF) removal, and the unique removal mechanisms of nanoemulsion are studied. Compared to surfactant solutions, the nanoemulsion exhibits enhanced wettability on solid surfaces and lower interfacial tension against oil phases (< 0.1 mN·m−1), synergistically facilitating OBDF detachment through three mechanisms: low interfacial tension, wettability enhancement, and disjoining pressure effects. Enhanced emulsification produced monodisperse micron droplets under shear, overcoming Laplace resistance through pre-organized interfacial films. The synergistic combination of enhanced wettability (contact angle reduction to 25.4°) and nanoscale droplet dimensions (147 nm) significantly improves nanoemulsion permeation through OBDF filter cakes. These combined properties improve the removal effect of OBDF, while interfacial bonding strength at cement-casing (3.02 MPa) and cement-formation (2.74 MPa) interfaces matched pristine samples. These elucidated mechanisms provide theoretical guidance for formulating and optimizing nanoemulsion-based flushing fluids, while also facilitating their broader applications in fields such as enhanced oil recovery and environmental remediation.
期刊介绍：
Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.
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