C.E.雅各布是国际著名的水文学家。本文所阐述的复合井是他在这方面专利的简略介绍。我国的现实生活中,在黄河流域,沿海地带以及其他地区均遇到了如何从咸水中提取淡水,从混合贮存的油田中提取纯油的问题。如能采用雅各布的复合井——就能帮助解决这方面的问题。本文的目的在于引起国内有关方面的注意、研讨和应用。 C.E. Jacobs is an internationally renowned hydrographer. The compound well described in this paper is a brief introduction of his patent in this area. In the real life of our country, the Yellow River Basin, the coastal zone and other regions have encountered the problem of how to extract fresh water from salt water and extract pure oil from the mixed oil fields. The use of Jacob’s compound wells can help solve this problem. The purpose of this paper is to arouse the attention, research and application of relevant domestic parties.