Orienting method for use in wells

Claim 1

AN ORIENTING METHOD FOR USE IN WELLS COMPRISING THE STEPS OF: PLACING IN A STRATUM SURROUNDING A WELL BORE A RADIOACTIVE MARKER CAPABLE OF BEING DETECTED BY A RADIATION DETECTOR; LOWERING INTO SAID WELL BORE TO THE LEVEL OF SAID RADIOACTIVE MARKER A FIRST RADIATION DETECTOR HAVING A SELECTED RADICAL DIRECTION OF RADIATION DETECTION AND CAPABLE, WHEN ROTATED, OF TRANSMITTING TO THE EARTH''S SURFACE THE ANGULAR POSITION OF SAID RADIOACTIVE MARKER RELATIVE TO THE SELECTED DIRECTION RADIATION DETECTION AND COMPASS MEANS CAPABLE OF TRANSMITTING TO THE EARTH''S SURFACE THE DIRECTION OF NORTH RELATIVE TO SAID SELECTED DIRECTION OF RADIATION DETECTION; ROTATING SAID FIRST RADIATION DETECTOR AND COMPASS MEANS AND DETERMINING THEREBY THE ANGULAR POSITION OF SAID RADIOACTIVE MARKER RELATIVE TO THE SELECTED DIRECTION OF RADIATION DETECTION AND THEREBY THE ANGULAR POSITION OF SAID RADIOACTIVE MARKER RELATIVE TO THE DIRECTION OF NORTH; REMOVING SAID FIRST RADIATION DETECTOR AND COMPASS MEANS FROM SAID WELL BORE; LOWERING IN SAID WELL BORE TO THE LEVEL OF SAID MARKER A PERFORATOR HAVING A SELECTED RADIAL DIRECTION OF PERFORATION AND CONNECTED TO A SECOND RADIATION DETECTOR HAVING A SELECTED RADIAL DIRECTION OF RADIATION DETECTION AND CAPABLE WHEN ROTATED TO TRANSMITTING TO THE EARTH''S SURFACE THE ANGULAR POSITION OF SAID RADIOACTIVE MARKER RELATIVE TO THE SELECTED DIRECTION OF RADIATION DETECTION, SAID SELECTED RADIAL DIRECTION OF PERFORATION OF SAID PERFORATOR BEING IN A KNOWN FIXED RELATIONSHIP TO THE SELECTED DIRECTION OF RADIATION DETECTION OF SAID SECOND RADIATION DETECTOR; ROTATING SAID SECOND RADIATION DETECTOR AND SAID PERFORATOR UNTIL SAID DIRECTION OF RADIATION DETECTION IS DIRECTED TOWARD SAID RADIOACTIVE MARKER; LOWERING SAID RADIATION DETECTOR AND SAID PERFORATOR TO ADJACENT A DESIRED LEVEL OF PERFORATION; AND THEN ORIENTING SAID PERFORATOR TO A DESIRED DIRECTION OF PERFORATION RELATIVE TO THE ANGULAR POSITION OF SAID RADIOACTIVE MARKER AND THE DIRECTION OF NORTH