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钻井污水产生的面广 ,量大 ,成分复杂 ,水质差别很大 ,不可能用一种固定的装置及流程有效地处理不同油田的钻井污水。江汉油田钻井污水含有较多的悬浮物和油分 ,还含有各种钻井液添加剂和大量的氯离子。通过对取自 3口井的不同钻井污水水样所做的电絮凝、离心分离和气浮等试验 ,优选出最为经济、高效的单元处理设备。利用这些模拟单元体优选出可供各油田选用的 3套工艺流程。在此基础上 ,经过改进的ZJW— 3B移动式钻井污水处理装置 ,完成了 3口井的工业试验。各项试验表明 ,高速离心机分离的处理效果较理想 ,但设备投资费用大 ,而化学混凝—斜管沉淀—气浮—过滤工艺流程的技术成熟 ,性能稳定 ,处理后的水质达到了排放标准 ,为钻井污水的处理开拓了新的途径。
Drilling sewage produced a wide range of large, complex composition, water quality varies widely, it is impossible to use a fixed device and process effectively handle different fields of drilling wastewater. Jianghan oilfield drilling wastewater contains more suspended solids and oil, but also contains a variety of drilling fluid additives and a large number of chloride ions. Based on the experiments of flocculation, centrifugal separation and flotation on different drilling wastewater samples taken from 3 wells, the most economical and efficient unit processing equipment was selected. Use these simulation units to optimize the three sets of process options available for each field. On this basis, the improved ZJW-3B mobile drilling wastewater treatment plant has completed the industrial test of three wells. The tests show that the high-speed centrifuge separation treatment effect is better, but the equipment investment costs, and chemical coagulation - inclined tube precipitation - flotation - filtration technology is mature, stable performance, the water quality reached the discharge Standard, for the drilling of sewage treatment has opened up new avenues.