Well testing tool

Claim 1

AN OIL WELL TOOL COMPRISING A TUBULAR HOUSING, A SLEEVE DISPOSED WITHIN AND THREADEDLY ENGAGING THE INTERIOR OF THE HOUSING, A TUBULAR MANDREL SLIDABLE RECEIVED BY THE SLEEVE, MEANS PREVENTING RELATIVE ROTATION BETWEEN SAID SLEVE AND SAID MANDREL LATERAL PORTS IN SAID MANDREL ADJACENT TO AND ABOVE THE BOTTOM OF SAID SLEEVE WHEN SAID MANDREL IS IN ITS UPPER POSITION RELATIVE TO SAID SLEEVE, LATERAL PORTS IN SAID HOUSING BELOW AND SPACED FROM THE BOTTOM OF SAID SLEEVE, SAID HOUSING PORTS PROVIDING FLUID COMMUNICATION BETWEEN THE INTERIOR AND THE EXTERIOR OF THE HOUSING, A SECOND SLEEVE SLIDABLE WITHIN SAID HOUSING LOCATED BELOW SAID FIRST SLEEVE AND ABOVE SAID HOUSING PORTS, MEANS CONNECTING SAID SECOND SLEEVE SAID MANDREL, A PASSAGEWAY THROUGH SAID SECOND SLEEVE PREMITTING FLUID FLOW FROM BELOW TO ABOVE THE SECOND SLEEVE, WHEREBY UPON DOWNWARD MOVEMENT OF SAID MANDREL RELATIVE TO SAID HOUSING THE SECOND SLEEVE WILL COVER SAID HOUSING PORTS AND THE MANDREL PORTS WILL MOVE OUT OF SAID SLEEVE, THE FIRST AND UPON SUBSEQUENT ROTATION OF SAID MANDREL, THE FIRST SLEEVE WILL BE THREADED DOWNWARDLY TO AGAIN COVER SAID MANDREL PORTS.