Process of drilling a well and installing casing

Claim 1

A METHOD OF DRILLING AND SETTING CASING BELOW THE LOWER END OF CONDUCTOR PIPE OF A WELL WHILE MAINTAINING A BLOWOUT PREVENTER SECURED TO THE WELL CONTINUOUSLY DURING THE DRILLING AND THE SETTING OF CASING, COMPRISING SECURING A CASING HEAD TO THE UPPER END OF THE CONDUCTOR PIPE, SECURING A BLOWOUT PREVENTER TO THE UPPER END OF THE CASING HEAD, RUNNING A DRILL HAVING A DIAMETER SLIGHTLY LESS THAN THE DIAMETER OF THE OPENING IN THE BLOWOUT PREVENTER DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND CASING HEAD AND DRILLING A BOREHOLE TO THE DESIRED DEPTH BELOW THE LOWER END OF THE CONDUCTOR PIPE, UNDERREAMING THE BOREHOLD BELOW THE LOWR END OF THE CONDUCTOR PIPE TO THE BOTTOM OF THE BOREHOLE, RUNNING PROTECTOR CASING DOWNWARDLY THROUGH THE BLOWOUT PRVENTER AND SUSPENDING THE PROTECTOR CASING FROM A PROTECTOR CASING HANGER SEATED ON A LANDING SURFACE IN THE LOWER END OF THE CASING HEAD, SAID PROTECTOR CASING HANGER HAVING AN UPWARDLY FACING LANDING SURFACE, CLOSING THE UPPER END OF THE PROTECTOR CASING HANGER AND THE BLOWOUT PREVENTER, INTERDUCING A LIQUID UNDER PRESSURE INTO THE CASING HEAD ABOVE THE PROTECTOR CASING TO TEST THE SEAL BETWEEN THE PROTECTOR CASING HANGER AND THE LANDING SURFACE, AFTER THE TESTING SHOWS A TIGHT SEAL BETWEEN THE PROTECTOR CASING HANGER AND THE LANDING SURFACE DISPLACING CEMENT DOWN THROUGH THE PROTECTOR CASING THE CEMENT THE PROTECTOR CASING IN THE WELL, RUNNING A DRILL DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND THE PROTECTOR CASING TO DRILL A BOREHOLD BELOW THE LOWER END OF THE PROTECTOR CASING, RUNNING OIL CASING DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND THE PROTECTOR CASING AND SUPENDING SAID OIL CASING FROM AN OIL CASING HANGER SEATED IN THE UPWARDLY FACING LANDING SURFACE OF THE PROTECTOR CASING HANGER, CLOSING THE UPPER END OF THE OIL CASING HANGER, CLOSING THE BLOWOUT PREVENTER, INTRODUCING A LIQUID UNDER PRESSURE INTO THE CASING ABOVE THE END OF THE HANGER AND THE PROTECTOR CASING HANGER, AFTER THE TESTING SHOWS A TIGHT SEAL BETWEEN THE OIL CASING HANGER AND THE SHOWS A TIGHT SEAL BETWEEN THE OIL CASING HANGER AND THE PROTECTOR CASING HANGER DISPLACING CEMENT DOWNWARDLY THROUGH THE OIL CASING TO CEMENT THE OIL CASING IN PLACE, RUNNING A TUBING STRING DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND THE OIL CASING HANGER, AND HANGING THE TUBING STRING FROM A LANDING SURFACE IN THE UPPER END OF THE OIL CASING HANGER.

Claim 2

A METHOD OF DRILLING AND SETTING CASING BELOW THE LOWER END OF CONDUCTOR PIPE OF A WELL WHILE MAINTAINING A BLOWOUT PREVENTER SECURED TO THE WELL CONTINUOUSLY DURING THE DRILLING AND THE SETTING OF CASING, COMPRISING SECURING A CASING HEAD TO THE UPPER END OF THE CONDUCTOR PIPE, SECURING A BLOWOUT PREVENTER TO THE UPPER END OF THE CASING HEAD, RUNNING A DRILL HAVING A DIAMETER SLIGHTLY LESS THAN THE DIAMETER OF THE OPENING IN THE BLOWOUT PREVENTER DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND CASING HEAD AND DRILLING A BOREHOLE TO THE DESIRED DEPTH BELOW THE LOWER END OF THE CONDUCTOR PIPE, UNDERREAMING THE BOREHOLD BELOW THE LOWR END OF THE CONDUCTOR PIPE TO THE BOTTOM OF THE BOREHOLE, RUNNING PROTECTOR CASING DOWNWARDLY THROUGH THE BLOWOUT PRVENTER AND SUSPENDING THE PROTECTOR CASING FROM A PROTECTOR CASING HANGER SEATED ON A LANDING SURFACE IN THE LOWER END OF THE CASING HEAD, SAID PROTECTOR CASING HANGER HAVING AN UPWARDLY FACING LANDING SURFACE, CLOSING THE UPPER END OF THE PROTECTOR CASING HANGER AND THE BLOWOUT PREVENTER, INTERDUCING A LIQUID UNDER PRESSURE INTO THE CASING HEAD ABOVE THE PROTECTOR CASING TO TEST THE SEAL BETWEEN THE PROTECTOR CASING HANGER AND THE LANDING SURFACE, AFTER THE TESTING SHOWS A TIGHT SEAL BETWEEN THE PROTECTOR CASING HANGER AND THE LANDING SURFACE DISPLACING CEMENT DOWN THROUGH THE PROTECTOR CASING THE CEMENT THE PROTECTOR CASING IN THE WELL, RUNNING A DRILL DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND THE PROTECTOR CASING TO DRILL A BOREHOLD BELOW THE LOWER END OF THE PROTECTOR CASING, RUNNING OIL CASING DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND THE PROTECTOR CASING AND SUPENDING SAID OIL CASING FROM AN OIL CASING HANGER SEATED IN THE UPWARDLY FACING LANDING SURFACE OF THE PROTECTOR CASING HANGER, CLOSING THE UPPER END OF THE OIL CASING HANGER, CLOSING THE BLOWOUT PREVENTER, INTRODUCING A LIQUID UNDER PRESSURE INTO THE CASING ABOVE THE END OF THE HANGER AND THE PROTECTOR CASING HANGER, AFTER THE TESTING SHOWS A TIGHT SEAL BETWEEN THE OIL CASING HANGER AND THE SHOWS A TIGHT SEAL BETWEEN THE OIL CASING HANGER AND THE PROTECTOR CASING HANGER DISPLACING CEMENT DOWNWARDLY THROUGH THE OIL CASING TO CEMENT THE OIL CASING IN PLACE, RUNNING A TUBING STRING DOWNWARDLY THROUGH THE BLOWOUT PREVENTER AND THE OIL CASING HANGER, AND HANGING THE TUBING STRING FROM A LANDING SURFACE IN THE UPPER END OF THE OIL CASING HANGER.