钻井液与完井液2018，Vol.35Issue(2)：73-77,5.DOI:10.3969/j.issn.1001-5620.2018.02.012
纳米石蜡乳液封堵材料的合成与性能评价
Synthesis and Evaluation of a Nanophase Wax Emulsion Plugging Material
摘要
Abstract
Astable nanophase wax emulsion has been developed using emulsion inversion point (EIP) method combined with emulsifier-in-oil method, with Span 80 and Tween 80 as compound emulsifier and hydrophobically modified hydroxyethyl cellulose (HMHEC) as emulsion additive. The compound emulsifier has an HLB value of 10.5. The concentration of the compound emulsifier in the reaction raw materials was 11％, and the concentration of HMHEC 0.6％. The average particle size of the nanophase wax emulsion is 65 nm. The produced nanophase was emulsion had good stability, with 24 h rate of sedimentation of about 5％. Test on the compatibility of the nanophase wax emulsion with commonly used mud additives shows that apart from NH4-HPAN and XC, which will increase the particle sizes of the emulsion to over 100 nm, other commonly used mud additives are well compatible with the nanophase wax emulsion. Plugging test results show that the nanophase wax emulsion effectively plugs the pore spaces in shale mud cakes, with 92.95％ of the pore spaces being plugged, a plugging efficiency that is better than that of inorganic nanophase plugging agents such as zinc oxide and calcium carbonate.关键词
钻井液添加剂/纳米石蜡乳液/封堵能力/配伍性Key words
Drilling fluid additive/Nanophase wax emulsion/Plugging capacity/Compatibility分类
能源科技引用本文复制引用
晏军,于长海,梁冲,郝安乐,李秀芳,邓玉斌..纳米石蜡乳液封堵材料的合成与性能评价[J].钻井液与完井液,2018,35(2):73-77,5.基金项目
国家"十三五"科技重大专项"页岩气水平井水基钻井液抑制与封堵理论研究"(2016ZX05022001-002). （2016ZX05022001-002）
