Slick joint valve for sequential flow control

Claim 1

A MULTIPLE COMPLETION TOOL FOR AN OIL WELL WHICH PENETRATES BOTH AN UPPER PRODUCING FORMATION AND A LOWER PRODUCING FORMATION, WHICH COMPRISES: (A) AN INTERMEDIATE CYLINDRICAL SLEEVE, (B) A HOLLOW POLISHED CYLINDER FOR PROVIDING A FLOW PASSAGE FROM THREE ORIFICES THEREIN AND ADAPTED TO BE CONNECTED AT ITS UPPER END TO A TUBING STRING EXTENDING INTO SAID WELL WITH SAID POLISHED CYLINDER SLIDABLY EXTENDING THROUGH SAID SLEEVE AND OF OUTER DIAMETER SUBSTANTIALLY LESS THAN THE INSIDE DIAMETER OF SAID INTERMEDIATE SLEEVE, (C) A CENTER RING MEANS SECURED WITHIN SAID INTERMEDIATE SLEEVE AT A MIDPOINT THEREOF AND OF INNER DIAMETER AS TO PROVIDE AN OPENING THERETHROUGH FOR SAID POLISHER CYLINDER, (D) CYLINDRICAL PACKING MEANS POSITIONED IN SAID INTERMEDIATE SLEEVE BOTH ABOVE AND BELOW SAID CENTER RING AND ENCIRCLING SAID POLISHED CYLINDER FOR SUBSTANTIALLY THE LENGTH OF SAID INTERMEDIATE SLEEVE, (E) COMPRESSION RINGS AT EACH END OF SAID INTERMEDIATE SLEEVE SECURED TO SAID INTERMEDIATE SLEEVE TO MAINTAIN SAID PACKING MEANS UNDER COMPRESSION FOR CONTACT WITH SAID POLISHED CYLINDER, THE UPPER TWO OF SAID THREE ORIFICES BEING SPACED APART A DISTANCE OF THE ORDER OF THE LENGTH OF SAID PACKING MEANS, AND (F) A BULKHEAD WITHIN SAID POLISHED CYLINDER BETWEEN THE LOWER TWO OF SAID THREE ORIFICES.