目前的有机胺存在加入后使钻井液滤失量、流变参数增加以及页岩膨胀率较高的问题,通过分析设计有机胺的分子结构,研究开发了一种新型有机胺抑制剂。这种有机胺的化学结构是兼具有短烷基和长烷基的多烷基叔胺,兼顾了抑制钻屑分散和粘土的分散造壁性,能够高效抑制泥页岩钻屑的分散,页岩膨胀率明显降低,现场应用也表明其对钻井液滤失量及流变性能已基本无影响。 At present, organic amine has the problems of filtration loss, rheological parameter increase and shale expansion rate after the addition of organic amine. By analyzing the molecular structure of organic amine, a new type of organic amine inhibitor has been developed. The chemical structure of this organic amine is a polyalkyl tertiary amine which has both short alkyl and long alkyl groups. It can suppress the dispersion of drilling cuttings and the clay, and can effectively suppress the dispersion of shale cuttings. Shale expansion rate is obviously reduced, field application also shows that it has little effect on fluid loss and rheological properties of drilling fluid.