环境友好型水基钻井液GREEN-DRILL的研制与应用  

Development and Application of Environment-Friendly Drilling Fluid GREEN-DRILL

作　　者：胡进军[1] 孙强[1] 夏小春[1] 魏子路 冀腾[1] 项涛[1] 

机构地区：[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

出　　处：《石油钻探技术》2014年第2期75-79,共5页Petroleum Drilling Techniques

基　　金：中海油田服务股份有限公司项目"环保型水基钻井液GREEN-DRILL研发"(编号:YHB12YF009)部分研究内容

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GREENDRILL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%,对蒙古裸腹溞Ⅰ龄幼体72h半数致死浓度大于60 000mg/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GREENDRILL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。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 Ⅰsea 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 of GREEN-DRILL diluents fluid .Field application in Bohai Oilfield showed that water based drilling fluid GREEN-DRILL could solve the problem of leakage and lost circulation ,with stable properties and environ-ment friendly performance .

关 键 词：海上钻井 环境保护 水基钻井液 生物降解 现场应用 

分 类 号：TE254[石油与天然气工程—油气井工程]