Shaped-charge liner
AssigneeOwen Oil Tools LP
InventorsDan W. Pratt, David S. Wesson, John K. Rouse
Life of this patent
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Abstract
A liner for a explosive shaped charge, such as those used in perforating operations in oil and gas wells, is formed from a powdered metal mixture that includes molybdenum. The molybdenum allows a higher density liner to be formed to create denser jets for achieving deeper penetration, but without the negative effect that often accompany the use of higher density materials. The molybdenum may be used in the amount of 0.5% to 25% by weight of the metal mixture, with tungsten and other constituents forming the remainder of the mixture.
Claims15
A perforating gun, comprising:
- (a) a tubular carrier;
- (b) a charge tube disposed within said tubular carrier;
- (c) at least one shaped charge mounted in said charge tube, said shaped charge comprising:
- (i) a casing;
- (ii) a liner associated with said casing, said liner formed from a powdered metal mixture containing molybdenum and a second material, the amount of molybdenum making up between about 0.5% to 25% by weight of said metal mixture;
- and
- (iii) an explosive material disposed within said casing.
A method of perforating a well, comprising:
- (a) providing a tubular carrier;
- (b) disposing a charge tube within the tubular carrier;
- (c) mounting at least one shaped charge in the charge tube, the shaped charge comprising:
- (i) a casing;
- (ii) a liner associated with said casing, said liner formed from a powdered metal mixture containing molybdenum and a second material, the amount of molybdenum making up between about 0.5% to 25% by weight of said metal mixture;
- and
- (iii) an explosive material disposed within said casing.
Dependencies are inferred from the claim text.