Apparatus for obtaining fluid samples from subterranean formations
First Claim
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1. A RETRIEVABLE DEVICE FOR LOWERING THROUGH A DRILL STRING DURING DRILLING OPERATIONS FOR OBTAINING SAMPLES OR SPECIMENS OF FLUID FROM THE FORMATION BELOW THE BOTTOM OF AN OIL WELL, COMPRISING A PAIR OF SLIDABLY CONNECTED MEMBERS, ONE MEMBER CARRYING A SHAPED CHARGE AND A DETONATOR, THE OTHER MEMBER HAVING A FIRING PIN IN COOPERATIVE RELATION WITH THE DETONATOR AND HAVING A LONGITUDINAL BORE OPEN AT OPPOSITE ENDS, SAID FIRING PIN BEING MOUNTED ON SAID OTHER MEMBER FOR PROJECTION BELOW THE
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1 Claim
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1. A RETRIEVABLE DEVICE FOR LOWERING THROUGH A DRILL STRING DURING DRILLING OPERATIONS FOR OBTAINING SAMPLES OR SPECIMENS OF FLUID FROM THE FORMATION BELOW THE BOTTOM OF AN OIL WELL, COMPRISING A PAIR OF SLIDABLY CONNECTED MEMBERS, ONE MEMBER CARRYING A SHAPED CHARGE AND A DETONATOR, THE OTHER MEMBER HAVING A FIRING PIN IN COOPERATIVE RELATION WITH THE DETONATOR AND HAVING A LONGITUDINAL BORE OPEN AT OPPOSITE ENDS, SAID FIRING PIN BEING MOUNTED ON SAID OTHER MEMBER FOR PROJECTION BELOW THE
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Current AssigneeRichard J. Monaghan
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Original AssigneeRichard J. Monaghan
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InventorsMonaghan, Richard J.
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Application NumberUS03/253,644Time in Patent Office1,618 DaysField of SearchUS Class Current166/63CPC Class CodesE21B 49/081 with down-hole means for tr...
