Upper zone gravel pack

Claim 1

APPARATUS FOR PRODUCING SEPARATELY FORMATION FLUIDS ENTERING SEPARATOR SETS OF PERFORATIONS IN CASING IN A WELL IN WHICH THE UPPER ZONE PRODUCES AND COMPRISING, A PACKER WITH A LARGE CENTRAL OPENING SET IN THE CASING BETWEEN SAID PERFORATIONS, A LARGE-DIAMETER TUBING SECTION SEALED THROUGH SAID PACKER, A CYLINDRICAL SCREEN ATTACHED TO THE TOP OF SAID LARGE TUBING SECTION, AND EXTENDING TO A LEVEL ABOVE THE TOP SET OF PERFORATIONS IN SAID CASING A TUBING SEAL RECEPTACLE BELOW SAID SCREEN AND ATTACHED TO SAID LARGE TUBING SECTION, A SMALL TUBING STRING SEALED THROUGH SAID TUBING SEAL RECEPTACLE AND EXTENDING TO THE TOP OF THE WELL, SAID SMALL TUBING HAVING AN OPENING BELOW SAID TUBING SEAL RECEPTACLE FOR ENTRY OF FLUIDS FROM THE LOWER SET OF PERFORATIONS AND A GRAVEL PACK ABOVE SAID PACKER BETWEEN SAID SCREEN AND CASING AND EXTENDING ABOVE THE TOP SET OF PERFORATIONS IN SAID CASING, WHEREBY FLUIDS FROM THE UPPER SET OF PERFORATIONS FLOW THROUGH SAID GRAVEL AS SAID FLUIDS ENTER THE WELL AND FLOW UP SAID WELL OUTSIDE OF SAID SMALL TUBING STRING.

Claim 3

A METHOD FOR PRODUCING A WELL COMPLETED IN TWO SEPARATE ZONES BY PERFORATING CASING OPPOSITE SAID ZONES COMPRISING, SETTING IN SAID CASING BETWEEN THE TWO SETS OF PERFORATIONS A PACKER HAVING A LARGE CENTRAL OPENING, LOWERING ON A WORK STRING AN ASSEMBLY INCLUDING A LARGEDIAMETER TUBING SECTION, A CYLINDRICAL SCREEN ABOVE SAID LARGE TUBING SECTION, AND A TUBING SEAL RECEPTACLE BELOW SAID SCREEN, SEALING SAID LARGE TUBING SECTION THROUGH SAID PACKER, INTRODUCING GRAVEL AROUND SAID SCREEN, DETACHING SAID WORK STRING FROM SAID ASSEMBLY, WITHDRAWING SAID WORK STRING FROM THE WELL, RUNING A TUBING STRING INTO SAID WELL AND SEALING SAID TUBING STRING THROUGH SAID TUBING SEAL RECEPTACLE, PRODUCING FLUIDS FROM THE BOTTOM ZONE THROUGH SAID TUBING STRING AND PRODUCING FLUIDS FROM THE TOP ZONE THROUGH SAID GRAVEL PACK AND SCREEN AND UP SAID WELL OUTSIDE SAID TUBING STRING.

Claim 4

A METHOD FOR PRODUCING A WELL COMPLETED IN TWO SEPARATE ZONES BY PERFORATING CASING OPPOSITE SAID ZONES COMPRISING, SETTING IN SAID CASING BETWEEN THE TWO SETS OF PERFORATIONS A PACKER HAVING A LARGE CENTRAL OPENING, LOWERING ON A WORK STRING AN ASSEMBLY INCLUDING A LARGEDIAMETER TUBING SECTION, A CYLINDRICAL SCREEN ABOVE SAID LARGE TUBING SECTION, AND A TUBING SEAL RECEPTACLE BELOW SAID SCREEN, SEALING SAID LARGE TUBING SECTION THROUGH SAID PACKER, INTRODUCING GRAVEL AROUND SAID SCREEN, DETACHING SAID WORK STRING FROM SAID ASSEMBLY, WITHDRAWING SAID WORK STRING FROM THE WELL, RUNING A TUBING STRING INTO SAID WELL AND SEALING SAID TUBING STRING THROUGH SAID TUBING SEAL RECEPTACLE, PRODUCING FLUIDS FROM THE BOTTOM ZONE THROUGH SAID TUBING STRING AND PRODUCING FLUIDS FROM THE TOP ZONE THROUGH SAID GRAVEL PACK AND SCREEN AND UP SAID WELL OUTSIDE SAID TUBING STRING.