Powder composite materials for tailless claddings of cumulative charges of perforators [[Previously Titled: Powder composite materials for plugless facing of perforator shaped charges.]]

A consideration is given to the problem of substitution of copper cladding for powder copper base material in cumulative charges which are used for perforation of casing or rock in petroleum industry. The copper cladding forms a tail making perforation tight after directed explosion. It is proposed to manufacture claddings of lead and graphite alloyed copper powders by cold pressing. The material proposed makes it possible to avoid perforation narrowing and obtain satisfactory perforation depth.