Straddle packer wire line tester

Claim 1

IN COMBINATION A WELL TOOL PROVIDED WITH MEANS ADAPTED TO BE SUSPENDED IN A WELL BORE BY A WIRE LINE AND CONTROLLABLE FROM THE WELL HEAD TO TEST A FORMATION FOR PRODUCTIVITY AND THE LIKE COMPRISING A HOUSING, A PAIR OF SPACED BORE HOLE PACKERS SLIDABLE ON SAID HOUSING, A PAIR OF ABUTMENTS SECURED TO SAID HOUSING OUTWARDLY OF EACH OF SAID PACKERS, PACKER SETTING MEANS OPERATIVELY ASSOCIATED WITH SAID HOUSING AND POSITIONED BETWEEN SAID PACKERS TO COMPRESS SAID PACKERS AGAINST SAID FIXED ABUTMENTS TO EFFECT RADIAL EXPANSION OF SAID PACKERS INTO GRIPPING, SEALING ENGAGEMENT WITH THE WALL OF THE BORE TO ISOLATE THE REGION BETWEEN SAID SET PACKERS, FLUID RECOVERY MEANS ADAPTED TO RECOVER FLUID FROM THE REGION ISOLATED, SAID FLUID RECOVERY MEANS INCLUDING A FIRST FLUID ENTRY MEANS PROVIDED IN SAID HOUSING INTERMEDIATE OF SAID SPACED PACKERS, A SECOND FLUID ENTRY MEANS PROVIDED IN SAID PACKER SETTING MEANS, SAID SECOND FLUID ENTRY MEANS ADAPTED TO BE OUT OF REGISTRY WITH SAID FIRST FLUID ENTRY MEANS WHEN SAID PACKERS ARE IN THEIR UNSET POSITION, SAID SECOND FLUID ENTRY MEANS ADAPTED TO MOVE INTO REGISTRY WITH SAID FIRST FLUID ENTRY MEANS TO ADMIT FLUID TO SAID HOUSING WHEN SAID PACKER SETTING MEANS IS ACTUATED TO SET SAID PACKERS, SENSING MEANS MOUNTED WITHIN SAID HOUSING TO OBTAIN AND TRANSMIT DATA TO THE WELL HEAD PERTAINING TO CONDITIONS WITHIN SAID REGION ISOLATED, SAID PACKER SETTING MEAN INCLUDING OPPOSED ANNULAR PACKER EXPANDING PISTONS SLIDABLY CARRIED BY SAID MANDREL AND HAVING THEIR OPPOSED AXIAL SURFACES MAINTAINED IN SPACED APART RELATION, ANNULAR CYLINDER MEANS POSITIONED IN OVERLYING SEALING RELATIONSHIP TO THE OPPOSED ENDS OF SAID SLIDABLE PISTONS TO DEFINE AN ANNULAR AXIALLY EXPANSIBLE CHAMBER MEANS BETWEEN SAID MANDREL, SAID CYLINDER MEANS AND THE OPPOSED ENDS OF SAID SLIDABLE PISTONS, AND MEANS MOUNTED WITHIN THE TOOL AND ACTUABLE FROM THE WELL HEAD TO PRESSURIZE SAID EXPANSIBLE CHAMBER MEANS TO DRIVE SAID SLIDABLE PISTONS OUTWARDLY TO EXPAND SAID PACKERS.