Well cementer or the like

Claim 1

A WELL CEMENTER ADAPTED TO BE A PART OF A WELL CASING STRING IN A POSITION ABOVE A PACKER OR THE LIKE AND WELL FLUID INTAKE MEANS THEREBENEATH LEADING INTO THE INTERIOR OF SAID WELL CASING STRING BELOW SAID CEMENTER, COMPRISING, IN COMBINATION, A TUBULAR CASE THREADED AT AT LEAST ITS UPPER END FOR PLACEMENT IN AND WITH A WELL CASING STRING OR THE LIKE, A PLURALITY OF LATERALLY OPENING PORTS EXTENDING THROUGH SAID CASE, SAID PORTS BEING IN ANGULARLY SPACED ARRANGEMENT, CAPS TO CLOSE SAID PORTS WITHOUT PROJECTING BEYOND THE OUTSIDE OF SAID CASE, A BODY PORTION IN SAID CASE EXTENDING ACROSS THE INSIDE THEREOF HAVING A CENTRAL CAVITY OPENING UPWARDLY AND A PLURALITY OF LATERALLY EXTENDING OPENINGS EXTENDING FROM SAID CAVITY IN ALIGNMENT WITH SAID PORTS, SAID BODY PORTION BEING DISINTEGRATABLE IN SITU, RESILIENT RETAINERS TO KEEP SAID CAPS IN CLOSED POSITION OPERABLE UNDER THE PRESSURE OF A CEMENTING OPERATION, A PLURALITY OF CIRCUMFERENTIALLY SPACED GENERALLY VERTICAL PASSAGES FOR HYDROCARBON FLUIDS EXTENDING THROUGH SAID BODY PORTION SPACED FROM SAID LATERALLY EXTENDING OPENINGS, SAID CAVITY HAVING A GENERALLY DOWNWARDLY FACING VALVE SEAT, A CHECK VALVE TO CLOSE SAID CAVITY AGAINST FLOW UPWARDLY THROUGH AND OUT OF SAID CAVITY, AND COUPLING MEANS CONNECTED TO SAID BODY PORTION FOR READY ATTACHMENT OF A TUBE THERETO THROUGH WHICH CEMENT OR OTHER MATERIAL MAY BE PUMPED UNDER PRESSURE TO THE OUTSIDE OF SAID CASE VIA SAID CAVITY AND PORTS.