Apparatus and process for isolating productive intervals in a well

THE PROCEDURE IS ONE OF IN-SITU MANUFACTURING OF A SEALING JOINT (18) OF AN ANNULAR SPACE (5), INCLUDING BETWEEN A WELL (P) AND A PRODUCTION COLUMN (T) AND ADJACENT TO A PRODUCTION AREA OF THIS WELL. SUCH PROCEDURE INCLUDES THE FOLLOWING STAGES: DELIMITATION OF THE ANNULAR SPACE (5) INTENDED TO BE OCCUPIED BY THE BOARD (18); INJECTION IN THE ANNULAR SPACE OF A SEALING MATERIAL (11). THE DEVICE INCLUDES: TWO MEANS OF CONFINEMENT (2-2) OF THE ANNULAR SPACE (5); MEANS (8, 13) OF SEPARATION OF THE INJECTED MATERIAL (11) REGARDING THE NORMALLY EXISTING FLUIDS BETWEEN THE PRODUCTION COLUMN (T) AND THE WELL (P). APPLICATION IN THE DRILLING INDUSTRY, ESPECIALLY OIL AND SIMILAR WELLS.