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针对目前油田常用的４种泥浆添加剂（ＦＡ－３６７，ＸＹ－２７，ＰＡＭ，ＣＭＣ），在蒸馏水和泥浆中分别加入单一添加剂和复合添加剂后进行化学需氧量（ＣＯＤ）测定，发现不同泥浆添加剂对ＣＯＤ的影响不同。将影响较小的ＦＡ－３６７和ＸＹ－２７加到给定的钻井污水中配成不同ＣＯＤ的水样进行两次混凝处理，表明不同剂量的单一或复合添加剂产生的ＣＯＤ不同，污水处理结果也不一样，当添加剂加量过高或使用对ＣＯＤ影响大的添加剂时，虽能满足生产需要，但同时却使钻井污水中ＣＯＤ大幅度增加，给施工现场环境造成了较大的危害，也给污水处理工作带来了困难．因此，在钻井泥浆中加入添加剂时一定要慎重．
According to the four kinds of mud additives (FA-367, XY-27, PAM and CMC) commonly used in the oil field, the chemical oxygen demand (COD) was measured after adding single additive and compound additive in distilled water and mud respectively. The impact on COD is different. Adding the less affected FA-367 and XY-27 to a given drilling effluent to form a mixture of different COD samples for coagulation twice indicated that different dosages of single or complex additives produced different CODs and that the results of the wastewater treatment Not the same, when the additive dosage is too high or the use of additives that have a large impact on COD, while meeting the production needs, but at the same time make a significant increase in drilling wastewater COD, causing greater harm to the construction site environment, but also to The sewage treatment has brought difficulties. Therefore, we must be careful when adding additives in drilling mud.