CAJ | 학술논문

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％，对蒙古裸腹溞Ⅰ龄幼体72 h半数致死浓度大于60000 m g/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。
위료제고해상유기전찬정액적배보성능，재개발배보형고효봉도제GS、수기윤활제GL화수용성억제제GG적기출상，연제출료배경우호형수기찬정액 GREEN-DRILL。성능평개결과표명，수기찬정액 GREEN-DRILL적기본성능은정，억제성능여취합순찬정액기본상당，기생물수양량여화학모양량적비치위67.5％，대몽고라복소Ⅰ령유체72 h반수치사농도대우60000 m g/L ，고우국가일급해역생물독성용허치，부합국가일급해역배방표준。동시，재수중희석후무유막、무흑색표부물。발해유전5정차적현장응용표명，수기찬정액GREEN-DRILL능해결발해유전존재적삼루화정루문제，성능은정，배보성능우량。
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 .