Wenxiang Lin , Huajie Liu , Chengyuan Ji , Yuhuan Bu , Hongxu Zhang , Hui Yin , Waheed Abdul
{"title":"水泥浆滤液中聚合物对天然气水合物稳定性影响的机理分析","authors":"Wenxiang Lin , Huajie Liu , Chengyuan Ji , Yuhuan Bu , Hongxu Zhang , Hui Yin , Waheed Abdul","doi":"10.1016/j.geoen.2025.213910","DOIUrl":null,"url":null,"abstract":"<div><div>In deep-water natural gas hydrate layer cementing, natural gas hydrate stability is crucial for production safety. During cement slurry coagulation, filtrate with organic matter and inorganic ions impacts the hydrate layer. Existing studies are unclear about the influence of polymers in cement slurry filtrate on natural gas hydrate stability. Therefore, it is necessary to clarify the influence of polymers in cement slurry filtrate on the stability of natural gas hydrate, so as to provide a basis for the development of cementing slurry system and theoretical support for safe cementing.</div><div>Based on previous research and actual production, representative cement slurry additive monomers such as AMPS, AA, AM, and AMPSNa were selected for well cementing. The effects of AM/AA, AA/AMPSNa, AM/AMPSNa, and AA/AMPSNa/AM on the stability of natural gas hydrates were studied using molecular dynamics simulation. Results showed that at the same solute concentration, the AM/AA - hydrate system had the fastest hydrate decomposition, with the water molecule diffusion coefficient increasing by 39.01 %–123.96 % compared to the pure water - hydrate system. Also, for the same molecule, lower solute concentration led to faster hydrate decomposition.</div></div>","PeriodicalId":100578,"journal":{"name":"Geoenergy Science and Engineering","volume":"252 ","pages":"Article 213910"},"PeriodicalIF":0.0000,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Mechanistic analysis of the effect of polymers in cement slurry filtrates on the stability of natural gas hydrates\",\"authors\":\"Wenxiang Lin , Huajie Liu , Chengyuan Ji , Yuhuan Bu , Hongxu Zhang , Hui Yin , Waheed Abdul\",\"doi\":\"10.1016/j.geoen.2025.213910\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In deep-water natural gas hydrate layer cementing, natural gas hydrate stability is crucial for production safety. During cement slurry coagulation, filtrate with organic matter and inorganic ions impacts the hydrate layer. Existing studies are unclear about the influence of polymers in cement slurry filtrate on natural gas hydrate stability. Therefore, it is necessary to clarify the influence of polymers in cement slurry filtrate on the stability of natural gas hydrate, so as to provide a basis for the development of cementing slurry system and theoretical support for safe cementing.</div><div>Based on previous research and actual production, representative cement slurry additive monomers such as AMPS, AA, AM, and AMPSNa were selected for well cementing. The effects of AM/AA, AA/AMPSNa, AM/AMPSNa, and AA/AMPSNa/AM on the stability of natural gas hydrates were studied using molecular dynamics simulation. Results showed that at the same solute concentration, the AM/AA - hydrate system had the fastest hydrate decomposition, with the water molecule diffusion coefficient increasing by 39.01 %–123.96 % compared to the pure water - hydrate system. Also, for the same molecule, lower solute concentration led to faster hydrate decomposition.</div></div>\",\"PeriodicalId\":100578,\"journal\":{\"name\":\"Geoenergy Science and Engineering\",\"volume\":\"252 \",\"pages\":\"Article 213910\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-04-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Geoenergy Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2949891025002684\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"0\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geoenergy Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2949891025002684","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Mechanistic analysis of the effect of polymers in cement slurry filtrates on the stability of natural gas hydrates
In deep-water natural gas hydrate layer cementing, natural gas hydrate stability is crucial for production safety. During cement slurry coagulation, filtrate with organic matter and inorganic ions impacts the hydrate layer. Existing studies are unclear about the influence of polymers in cement slurry filtrate on natural gas hydrate stability. Therefore, it is necessary to clarify the influence of polymers in cement slurry filtrate on the stability of natural gas hydrate, so as to provide a basis for the development of cementing slurry system and theoretical support for safe cementing.
Based on previous research and actual production, representative cement slurry additive monomers such as AMPS, AA, AM, and AMPSNa were selected for well cementing. The effects of AM/AA, AA/AMPSNa, AM/AMPSNa, and AA/AMPSNa/AM on the stability of natural gas hydrates were studied using molecular dynamics simulation. Results showed that at the same solute concentration, the AM/AA - hydrate system had the fastest hydrate decomposition, with the water molecule diffusion coefficient increasing by 39.01 %–123.96 % compared to the pure water - hydrate system. Also, for the same molecule, lower solute concentration led to faster hydrate decomposition.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
