环境友好型水基钻井液 GREEN-DRILL的研制与应用.docx

第42卷第2期 2014年3月Vol.42 No.2Mar.,2014石 油 钻 探 第42卷第2期 2014年3月 Vol.42 No.2 Mar.,2014 PETROLEUM DRILLING TECHNIQUES 钻井完井 doi:10.3969/j.issn,1001-0890.2014.02.015 环境友好型水基钻井液 GREEN-DRILL 的研制与应用 胡进军1,孙 强1,夏小春1,魏子路2,冀 腾1,项 涛1 (1.中海油田服务股份有限公司油田化学研究院，河北三河065201;2.中海油田服务股份有限公司油田化学事业部，天津300458) 摘 要：为了提高海上油气田钻井液的环保性能，在开发环保型高效封堵剂GS、水基润滑剂GL 和水溶性抑制 剂GG 的基础上，研制出了环境友好型水基钻井液 GREEN-DRILL。 性能评价结果表明，水基钻井液 GREEN- DRILL 的基本性能稳定，抑制性能与聚合醇钻井液基本相当，其生物需氧量与化学耗氧量的比值为67.5%,对蒙 古裸腹潘I 龄幼体72h 半数致死浓度大于60000mg/L, 高于国家一级海域生物毒性容许值，符合国家一级海域 排放标准。同时，在水中稀释后无油膜、无黑色漂浮物。渤海油田5井次的现场应用表明，水基钻井液 GREEN- DRILL 能解决渤海油田存在的渗漏和井漏问题，性能稳定，环保性能优良。 关键词：海上钻井环境保护水基钻井液生物降解现场应用 中图分类号：TE254 文献标识码：A 文章编号：1001-0890(2014)02-0075-05 Development and Application of Environment-Friendly Drilling Fluid GREEN-DRILL Hu Jinjun',Sun Qiang',Xia Xiaochun',Wei Zilu2,Ji Teng',Xiang Tao' (1.Oilfield Chemical R&D Institute,China Oilfield Services Ltd.,Sanhe,Hebei,065201,China;2. Oilfield Chemicals Department,China Oilfield Services Ltd.,Tianjin,300458,China) Abstract: Water based drilling fluid GREEN-DRILL has been developed to improve environmental performance of offshore drilling operation through the development of highly efficient eco-friendly plugging agent(GS),water based lubricant(GL),and soluble inhibitor(GG). Lab evaluation tests indicated that the basic properties of the GREEN-DRILL was stable,its inhibition performance was equivalent to that of gly- col drilling fluid,the ratio of biochemical oxygen demand to chemical oxygen consumption was 67.5%,and the 72 h median lethal concentration was more than 60,000 mg/L with larva of Mongolia bare abdomen I age,higher than the permissible value of biological toxicity for level I sea area in China,and meeting the na- tional discharge standard. On the other hand, there was not oil film and black floatage in the surface