PROCESSO PARA REMOVER UM CONDUTO INTERNO ARGAMASSADO EM UM CONDUTO EXTERNO,PROCESSO PARA REMOVER UMA PORCAO DE ESTACA ARGAMASSADA DENTRO DE UMA LUVA DE UMA PLATAFORMA PROCESSO PARA REMOVER UMA PORCAO DE UM APARELHO DE CORTE POR EXPLOSAO E APARELHO PARA REMOVER ARGAMASSA DE UM CONDUTO

A method of removing a conduit 6 cemented within a larger, surrounding conduit 4, for example a pile grouted within a sleeve of an offshore platform, comprises circumferentially cutting the pile from within at longitudinally spaced locations, the circumferential cuts being substantially connected by at least one longitudinal cut therebetween. Both circumferential and longitudinal cuts are preferably made with explosives, specifically linear shaped charges 26. Subsequent to the cutting operations, the pile is mechanically removed in sections from the sleeve, if desired, the grout within the sleeve may be fractured explosively, and removed from the sleeve, or permitted to fall into a "rat hole" created at the bottom of the pile below the lowermost circumferential cut.