Method and apparatus for well logging
First Claim
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3. A WELL BORE LOGGING TOOL COMPRISING MEANS FOR DETECTING RADIOACTIVITY POSITIONED IN SAID TOOL, A PLURALITY OF SOURCE OF RADIOACTIVITY MOVABLE WITH RESPECT TO SAID DETECTING MEANS, A PLURALITY OF MEANS FOR ENGAGING THE WALLS OF A BOREHOLE, EACH OF SAID PLURALITY OF RADIOACTIVE SOURCE BEING MOVABLE RELATIVE TO SAID DETECTOR IN ACCORDANCE WITH THE LATERAL DISPLACEMENT OF ONE OF SAID PLURALITY OF WALL-ENGAGING MEANS WHEN SAID MEANS ARE IN ENGAGEMENT WITH THE WALLS OF SAID BOREHOLE, AND MEANS FOR CORRELATING THE INTENSITY OF RADIOACTIVITY MEASURED BY SAID DETECTING MEANS WITH THE DEPTH OF SAID TOOL IN SAID WELL BORE AS A MEASUREMENT OF CHANGES IN THE CROSS-SECTIONAL AREA OF SAID WELL BORE.
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3 Claims
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3. A WELL BORE LOGGING TOOL COMPRISING MEANS FOR DETECTING RADIOACTIVITY POSITIONED IN SAID TOOL, A PLURALITY OF SOURCE OF RADIOACTIVITY MOVABLE WITH RESPECT TO SAID DETECTING MEANS, A PLURALITY OF MEANS FOR ENGAGING THE WALLS OF A BOREHOLE, EACH OF SAID PLURALITY OF RADIOACTIVE SOURCE BEING MOVABLE RELATIVE TO SAID DETECTOR IN ACCORDANCE WITH THE LATERAL DISPLACEMENT OF ONE OF SAID PLURALITY OF WALL-ENGAGING MEANS WHEN SAID MEANS ARE IN ENGAGEMENT WITH THE WALLS OF SAID BOREHOLE, AND MEANS FOR CORRELATING THE INTENSITY OF RADIOACTIVITY MEASURED BY SAID DETECTING MEANS WITH THE DEPTH OF SAID TOOL IN SAID WELL BORE AS A MEASUREMENT OF CHANGES IN THE CROSS-SECTIONAL AREA OF SAID WELL BORE.
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Current AssigneeJohn E. Walstrom
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Original AssigneeJohn E. Walstrom
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InventorsWalstrom, John E.
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Application NumberUS03/324,976Time in Patent Office1,085 DaysField of SearchUS Class Current250/268CPC Class CodesG01V 5/12 using gamma or X-ray source...
