请注意：耳塞开孔不得被耵聍或油堵死。
Please note: the opening of the ear plug must not be blocked by cerumen or oil.
根据生产需要设计几种曲轴油堵装配工具，介绍工具的使用方法。
Several assembly tools for crankshaft oil plug are designed according to the production requirements, and their operation methods are detailed.
丙烯酰胺类聚合物在油田各领域应用极广，无论是钻井、固井、堵水、压裂还是驱油等多个方面都有应用。
The acrylamide kind polymers have a very wide application in oil field, like drilling cementing exclusion of water compressive fracture and flooding oil etc.
应用推荐