Liner-carrying well pipe and joint

Claim 1

A JOINT INTERCONNECTING WELL PIPE WHICH CARRIES A THIN-WALLED LINER OF A CORROSION RESISTANT METAL COMPRISING: (A) TUBULAR PIN AND BOX MEMBERS, THE PIN MEMBER RECEIVED AXIALLY FORWARDLY INTO THE BOX MEMBERS, THE MEMBERS HAVING INTERFITTING THREADS AND MEANS THROUGH WHICH SEALING PRESSURE IS EXERTED BETWEEN THEM, (B) THE PIN MEMBER HAVING A PROJECTING REDUCED DIAMETER PORTION AT THE BEGINNING OF ITS THREADS AND THE BOX MEMBER AT THE INNER END OF ITS THREADS HAVING AN INCREASED DIAMETER PORTION RESIDING OPPOSITE THE REDUCED DIAMETER PORTION OF THE PIN MEMBER WHEN THE PIN AND BOX MEMBERS ARE INTERFITTED, (C) SAID PIN AND BOX MEMBERS OF A CORROSION RESISTANT METAL WITH THE PIN MEMBER CARRIED AT ONE END OF A FIRST WELL PIPE, THE BOX MEMBER CARRIED AT ONE END OF A SECOND WELL PIPE, AND SAID WELL PIPES EACH CARRYING IN SIDEWALL ENGAGING RELATIONSHIP A THIN-WALLED LINER OF A CORROSION RESISTANT METAL EXTENDING THEIR LENGTHS TO THE RESPECTIVE PIN AND BOX MEMBERS, (D) THE PIN MEMBER ADJACENT ITS FORWARD TERMINUS CIRCUMFERENTIALLY AND INTEGRALLY SECURED TO THE END OF THE LINER CARRIED IN THE FIRST WELL PIPE, (E) THE BOX MEMBER ADJACENT THE FORWARD EXTREMITY OF THE PIN MEMBER WHEN SAID MEMBERS ARE INTERFITTED CIRCUMFERENTIALLY AND INTEGRALLY SECURED TO THE END OF THE LINER CARRIED IN THE SECOND WELL PIPE, AND (F) SEALING MEANS CARRIED BY AT LEAST ONE OF THE PIN AND BOX MEMBERS AT THE REDUCED AND INCREASED DIAMETER PORTIONS FOR PROVIDING A SEAL BETWEEN THEIR OPPOSITE SIDEWALL SURFACES WHEN THE PIN AND BOX MEMBERS ARE INTERFITTED.