Claims
- 1. A method of perforating a wellbore, comprising the steps of:
- lowering a perforating gun into said wellbore where said perforating gun includes a first section of carrier having at least a first charge mounted thereon and a second section of carrier connected to the first section and having at least a second charge mounted thereon;
- detonating said second charge on said second section of carrier, said first charge detonating in response to the detonation of said second charge, said first charge perforating said wellbore;
- separating said second section of carrier from said first section of carrier in response to the detonating step; and
- dropping said first section of carrier, said first section falling to a bottom of said wellbore.
- 2. The method of claim 1, wherein the first and second sections of carrier form a single piece, the second section of carrier including a heat-treated material, the separating step comprising the step of:
- shattering the heat-treated material of said second section of carrier in response to the detonating step.
- 3. The method of claim 1, wherein the first and second sections of carrier form a single piece, the second section of carrier including a geometrically weakened portion, the separating step comprising the step of:
- breaking said second section of carrier along a line including said geometrically weakened portion in response to the detonating step.
- 4. A method of manufacturing a perforating gun, comprising the steps of:
- forming a single piece of material to resemble a carrier, said carrier including a first section and a second section;
- heat treating only said second section of said carrier;
- mounting at least one charge on said first section; and
- mounting at least one charge on said second section.
- 5. The method of claim 4, wherein the heat treating step comprises the steps of:
- heating the second section to an austenite region; and
- subsequently quenching the second section in a liquid solution until a microstructure of said second section is martensite.
- 6. A method of manufacturing a perforating gun, comprising the steps of:
- forming a single piece of material to resemble a carrier, said carrier including a first section and a second section;
- geometrically weakening only said second section of said carrier;
- mounting at least one charge on said first section; and
- mounting at least one charge on said second section.
- 7. The method of claim 6, wherein the geometrically weakening step comprises the step of:
- placing a notch in said second section of said carrier.
- 8. The method of claim 6, wherein the geometrically weakening step comprises the step of:
- placing a hole in said second section of said carrier.
- 9. The method of claim 6, wherein the geometrically weakening step comprises the step of:
- placing a groove in said second section of said carrier.
Parent Case Info
This is a division of application Ser. No. 07/565,383 filed Aug. 9, 1990, now U.S. Pat. No. 5,063,822.
US Referenced Citations (8)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2539947 |
Apr 1976 |
DEX |
Divisions (1)
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Number |
Date |
Country |
Parent |
565383 |
Aug 1990 |
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