Method and apparatus for production well completion

Claim 1

A WELL CEMENTING TOOL COMPRISING: A PERFORATED PIPE; A CEMENT FLOAT SHOE SECURED TO ONE END OF SAID PERFORATED PIPE; AND MEANS FOR TEMPORARILY BLOCKING SAID PERFORATIONS REMOVABLY POSITIONED IN SAID PIPE, SAID MEANS INCLUDING: A FLEXIBILE, FLUID-RETAINING MEMBER POSITIONED IN SAID PIPE FOR DISTENTION BY FLUID PRESSURE INTO A BLOCKING POSITION OVER SAID PERFORATIONS; THREADED TUBULAR MEANS FOR DETACHABLY CONNECTING SAID PERFORATED PIPE TO A TUBING STRING, SAID THREADED TUBULAR MEANS HAVING BIDIRECTIONAL THREADS THEREON IN TWO LOCATIONS FOR UNSCREWING SAID THREADED TUBULAR MEANS FROM SAID PERFORATED PIPE WITHOUT UNSCREWING SAID THREADED TUBULAR MEANS FROM A TUBING STRING TO WHICH IT IS CONNECTED; MEANS FOR EXERTING A DISTENDING FLUID PRESSURE ON SAID FLEXIBLE, FLUID-RETAINING MEMBER; AND MEANS ASSOCIATED WITH SAID THREADED TUBULAR MEANS FOR RELEASING SAID DISTENDING FLUID PRESSURE WHEN SAID THREADED TUBULAR MEANS IS ROTATED ABOUT ITS AXIS.

Claim 3

A METHOD FOR POSITIONING PERFORATED LINER IN A WELL BORE OPPOSITE A FORMATION BEARING A FLUID WHICH IT IS DESIRED TO PRODUCE, SAID METHOD COMPRISING: BLOCKING THE PERFORATIONS IN SAID LINER BY COVERING SAID PERFORATIONS WITH A FLEXIBLE MEMBER;

Claim 4

A METHOD FOR POSITIONING PERFORATED LINER IN A WELL BORE OPPOSITE A FORMATION BEARING A FLUID WHICH IT IS DESIRED TO PRODUCE, SAID METHOD COMPRISING: BLOCKING THE PERFORATIONS IN SAID LINER BY COVERING SAID PERFORATIONS WITH A FLEXIBLE MEMBER;