Apparatus for forming perforations in wells

Claim 1

AN APPARATUS FOR FORMING PERFORATIONS IN A WELL BY MEANS OF A SHAPED DETONABLE EXPLOSIVE CHARGE COMPRISING A HOUSING HAVING A CYLINDRICAL BODY PORTION ADAPTED TO CONTAIN A DETONATOR; A REMOVABLE UPPER CLOSURE FOR THE UPPER END OF THE HOUSING; A REMOVABLE LOWER CLOSURE FOR FOR THE LOWER END OF THE HOUSING, SAID LOWER CLOSURE HAVING DOWNWARDLY EXTENDING PASSAGES THERETHROUGH COMMUNICATING WITH THE INTERIOR OF THE HOUSING; TUBULAR MEMBERS HAVING THEIR UPPER ENDS SECURED TO THE LOWER CLOSURE WITH THEIR BORES COMMUNICATING FWITH TH ESAID PASSAGES, SAID TUBULAR MEMBERS AND PASSAGES BEING ADAPTED TO CONTAIN A DETONATING EXPLOSIVE FUSE EXTENDING FROM THE DETONATOR THROUGH THE PASSAGE AND BORES OF THE TUBULAR MEMBERS; A FRANGIBLE CONTAINER ADAPTED TO ENCLOSE A SHAPED DETONABLE EXPLOSIVE CHARGE HAVING A HOLLOWED IN A DIRECTION SIDE SO AS TO PRODUCE A PIERCING EXPLOSIION IN A DIRECTION OUT OF THE HOLLOWED PORTION, SAID CONTAINER CONSISTING OF A RECEPTACLE FOR THE DETONABLE EXPLOSIVE CHARGE AND A COVER THEREFOR, SAID RECEPTACLE HAVING A GROOVE IN THE OUTSIDE OF THE BOTTOM THEREOF, SAID COVER HAVING A PAIR OF SIMILAR GROOVES IN BOSSES ON OPPOSITE SIDES OF THE COVER, SAID GROOVES BEING ADAPTED TO ENGAGE THE TUBULAR MEMBERS; AND BINDING MEANS FOR SECURING IN EACH GROOVE ONE OF THE SAID TUBULAR MEMBERS.

Claim 2

AN APPARATUS FOR FORMING PERFORATIONS IN A WELL BY MEANS OF A SHAPED DETONABLE EXPLOSIVE CHARGE COMPRISING A HOUSING HAVING A CYLINDRICAL BODY PORTION ADAPTED TO CONTAIN A DETONATOR; A REMOVABLE UPPER CLOSURE FOR THE UPPER END OF THE HOUSING; A REMOVABLE LOWER CLOSURE FOR FOR THE LOWER END OF THE HOUSING, SAID LOWER CLOSURE HAVING DOWNWARDLY EXTENDING PASSAGES THERETHROUGH COMMUNICATING WITH THE INTERIOR OF THE HOUSING; TUBULAR MEMBERS HAVING THEIR UPPER ENDS SECURED TO THE LOWER CLOSURE WITH THEIR BORES COMMUNICATING FWITH TH ESAID PASSAGES, SAID TUBULAR MEMBERS AND PASSAGES BEING ADAPTED TO CONTAIN A DETONATING EXPLOSIVE FUSE EXTENDING FROM THE DETONATOR THROUGH THE PASSAGE AND BORES OF THE TUBULAR MEMBERS; A FRANGIBLE CONTAINER ADAPTED TO ENCLOSE A SHAPED DETONABLE EXPLOSIVE CHARGE HAVING A HOLLOWED IN A DIRECTION SIDE SO AS TO PRODUCE A PIERCING EXPLOSIION IN A DIRECTION OUT OF THE HOLLOWED PORTION, SAID CONTAINER CONSISTING OF A RECEPTACLE FOR THE DETONABLE EXPLOSIVE CHARGE AND A COVER THEREFOR, SAID RECEPTACLE HAVING A GROOVE IN THE OUTSIDE OF THE BOTTOM THEREOF, SAID COVER HAVING A PAIR OF SIMILAR GROOVES IN BOSSES ON OPPOSITE SIDES OF THE COVER, SAID GROOVES BEING ADAPTED TO ENGAGE THE TUBULAR MEMBERS; AND BINDING MEANS FOR SECURING IN EACH GROOVE ONE OF THE SAID TUBULAR MEMBERS.