中国石油大学学报（自然科学版）2018，Vol.42Issue(3)：81-87,7.DOI:10.3969/j.issn.1673-5005.2018.03.010
亲水纳米SiO2对CH4水合物形成的影响
Effect of hydrophilic nano-SiO2on CH4hydrate formation
摘要
Abstract
Addition of nanoparticles into drilling fluids can maintain the wellbore stability and decrease the invasion of drill-ing fluid into near wellbore formation when drilling hydrate bearing sediments,which may also affect the formation of gas hy-drates in the wellbore. In this study, laboratory experiments were carried out to investigate the effect of nanoparticles on methane hydrate formation,and the induction time,the amount and rate of hydrate formation at an experimental condition of 5 ℃ and 5 MPa) using pure water and various drilling fluid formulation were measured,including distilled water added with hydrophilic nano-SiO2particles (30 nm and 50 nm of particle sizes) with concentrations of 1%-5%. The results show that nano-SiO2particles can efficiently inhibit the formation of methane hydrate. In comparison with pure water,addition of nanop-articles (50 nm and 4%),the hydrate induction time can be increased by 74%,with the amount of hydrate formed reduced by 21%,and the rate of formation reduced by 56%.关键词
CH4水合物/水合物钻井液/亲水纳米SiO2/水合物抑制性Key words
CH4hydrate/hydrate drilling fluid/hydrophilic nano-SiO2/hydrate inhibition分类
能源科技引用本文复制引用
孙慧翠,王韧,徐显广,王建华,蒋国盛,张凌,刘天乐,宁伏龙..亲水纳米SiO2对CH4水合物形成的影响[J].中国石油大学学报（自然科学版）,2018,42(3):81-87,7.基金项目
国家自然科学基金项目(41672367) （41672367）
