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目前,在人造金刚石钻进中,广泛使用皂化溶解油乳化液作为钻孔冲洗液。在水质和岩性适宜的情况下,使用皂化油可取得良好的效果。但由于皂化油原用于金属切削的冷却和润滑,所以它的性能和成本都与钻探的要求不相适应。尤其是某些地层或水质不好时,会产生破乳现象,不仅消耗大量皂化油,还影响正常钻进。随着人造金刚石钻进的推广,研究适用于各种地层的冲洗液,减少消耗,降低成本,是摆在我们钻探工作者面前急待解决的任务。本文准备讨论以下几个有关问题。
At present, saponified dissolving oil emulsions are widely used as drilling fluid in synthetic diamond drilling. In the water quality and lithology appropriate circumstances, the use of saponified oil can achieve good results. However, since saponified oil is used for metal cutting cooling and lubrication, its performance and cost are not compatible with drilling requirements. In particular, some strata or water quality is poor, it will produce demulsification phenomenon, not only consume a large amount of saponified oil, but also affect the normal drilling. With the promotion of synthetic diamond drilling, it is an urgent task for us to study flushing fluids suitable for various formations to reduce consumption and reduce costs. This article is prepared to discuss the following several related issues.