废钻井液复合固化处理技术及应用研究

为了达到“以废治废、变废为宝”的目的,胜利油田对废钻井液固化处理技术进行了研究。详细分析了钻井液的有害成分及固化处理的作用机理,在确定了固化物设计指标的前提下,进行了大量实验室分析、检测及试样配比研究,得到了适合不同钻井液体系的固化处理配方,并对复合固结材料进行了击实、抗干湿、抗冻融等耐久性试验。结果表明,28d后,复合固结材料的抗压强度一般为0.5～1.5 MPa,可用于铺设简易道路或修建井场用。另外,在废钻井液中添加固结材料、稳定剂及骨料,并利用废钻井液的潜在活性,使其成为具有硅酸盐凝胶结构或水泥石结构的建筑材料,可以进行砌体施工。该项技术具有显著的经济效益和社会效益。

Complex Solidification Technology for Treatment of Waste Drilling Fluid and Its Engineering Application

In order to reach the target of changing waste matters into the useful materials, the engineers of Shengli Oilfield developed the solidification technology for treatment of waste drilling fluid. The harmful impurities in drilling fluid and solidification mechanism of waste drilling fluid are investigated. The design indexes for solidified matters were determined, and the sample analysis and examination was carried out in laboratory. The different solidification formulations for various drilling fluid systems were obtained. The endurance test of complex solidified materials was made. The result shows that the compression strength of the solidified materials ranges from 0.5 to 1.5 MPa after solidification for twenty eight days. This type material can be used to build simple road and well field. Adding some solidification and bone matters into the solidified materials can make it applied to architecture and have silicate gel and cement stone structures.