CX170-1井钻井废水及废钻井液处理技术

CX170-1井位于川西平原,周围良田环绕。文章就川西地区钻井作业现状提出了比较可行的钻井废水及废钻井液无害化处理工艺技术。针对钻井废水,详细介绍了轻度污染废水;严重污染废水和特殊作业废水的处理工艺及处理效果。对于废钻井液,该井主要采用了固化处理。结果表明:经固化处理的废钻井液干结后具有一定强度,失去了水敏性,不再具有返浆性。浸泡实验表明,有害物得到了比较彻底的固定,经检测,各种污染指标大都低于国家一级标准,自然条件下外排的废钻井液不再对环境造成污染。

Treatment Technique of Drilling Waste Water and Drilling Fluid of CX170-1 Well

CX170-1 well, surrounded by good farmland, located in Chuanxi plain. Feasible treatment technique of drilling waste water and drilling fluid are proposed according to the current status of drilling activity in Chuanxi region. Regarding drilling waste water, treatment process and effect of lightly polluted waste water, seriously polluted wastewater and waste water from special activity are introduced in detail. Regarding waste drilling fluid, solidification treatment method has been adopted for this well. The result shows that dry drilling fluid after solidification treatment possess certain strength, with no water sensitivity and no after-slurry character. The experiment of marinate shows that hazardous material has been fixed totally. Through inspection, various pollution criteria is lower than that of national class I. Waste drilling fluid discharged under natural condition will no long cause pollution on environment.