Submarine well head tool servicing apparatus

Claim 1

APPARATUS FOR SERVICING SUBMARINE WELL HEAD TOOL MEANS HAVING A PRESSURE RESPONSIVE ACTUATOR COMPRISING DELIVERY MEANS FOR DELIVERING FLUID PRESSURE TO SAID ACTUATOR AND INCLUDING SUPPLY CONDUIT EXTENDING BELOW THE WATER SURFACE TO THE UNDERWATER WELL HEAD LOCATION, ELECTRICALLY RESPONSIVE MEANS INCLUDING VALVING PRIME MOVER MEANS AND PRIME MOVER OPERATED VALVING AT SAID LOCATION FOR CONTROLLING THE FLOW OF FLUID BETWEEN SAID DELIVERY MEANS AND SAID TOOL MEANS ACTUATOR, SAID PRIME MOVER MEANS BEING ELECTRICALLY ENERGIZABLE, AND CIRCUIT MEANS INCLUDING CABLE EXTENDING BELOW THE WATER SURFACE FOR ELECTRICAL CONNECTION WITH SAID ELECTRICALLY RESPONSIVE MEANS TO CONTROL ENERGIZATION THEREOF THEREBY CONTROLLING THE OPERATION OF SAID TOOL MEANS TO SERVICE THE WELL, SAID VALVING HAVING ACTIVE POSITIONS IN WHICH FLUID PRESSURE IS SELECTIVELY APPLIED TO OPERATE THE ACTUATOR TO SELECTED CONFIGURATIONS AND AN INACTIVE POSITION OFFSET FROM SAID ACTIVE POSITIONS, SAID CIRCUIT MEANS INCLUDING CIRCUIT SECTIONS ONE FOR SELECTIVELY CONTROLLING ENERGIZATION OF SAID VALVING PRIME MOVER MEANS TO OPERATE THE VALVING TO ONE POSITION, AND ANOTHER FOR SELECTIVELY CONTROLLING ENERGIZATION OF SAID VALVING PRIME MOVER MEANS TO OPERATE THE VALVING TO ANOTHER POSITION, AND SAID SECTIONS INCLUDING MEANS TO EFFECT INDICATION AT THE SURFACE OF THE CONDITION OF SAID VALVING AS BEING AT EITHER OF SAID ACTIVE POSITIONS OR AT AN INACTIVE POSITION, SAID FLUID PRESSURE DELIVERING MEANS INCLUDING AN UNDERWATER FLUID PRESSURE MANIFOLD CHAMBER FOR RECEIVING FLUID PRESSURE FROM SAID CONDUIT, SAID CHAMBER CONTAINING SAID VALVING, AND SAID FLUID PRESSURE DELIVERING MEANS INCLUDING PORTING IN SAID CHAMBER THROUGH WHICH FLUID MAY ESCAPE FROM SAID TOOL MEANS AND THROUGH SAID VALVING TO THE SUB-SURFACE WATER.