Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6978848 | Method and apparatus for penetrating subsurface formations A method and apparatus for driving at least one explosive driven projectile into an open hole or well bore of a subterranean formation for the purpose of stimulating productive formation. The apparatus is capable of pivoting within the open hole or well bore for des... | 12/27/2005 |
| 6557650 | Method and apparatus for protecting explosives A method and apparatus to protect explosive components used in various tools, such as tools for use in wellbores, includes a component with an adsorptive material. Example tools include perforating gun strings that include shaped charges, detonating cords... | 05/06/2003 |
| 6386296 | Method and apparatus of protecting explosives A method and apparatus to protect explosive components used in various tools, such as tools for use in wellbores, includes a component with an adsorptive material. Example tools include perforating gun strings that include shaped charges, detonating cords... | 05/14/2002 |
| 4467878 | Shaped charge and carrier assembly therefor In a perforating apparatus, a series of explosive charges are mounted on a frangible strap which is pressfit within a frangible carrier which is suspended from a conventional form of wire line tool in such a way that when the charges are detonated the car... | 08/28/1984 |
| 4063509 | Device for stimulation of geothermal wells A device comprising an outer shell, open at one end, a charge carrier for carrying shaped charges suspended within the outer shell and means for releasing gas suspended within the outer shell used in the stimulation of geothermal wells.... | 12/20/1977 |
| 3939927 | Combined gravel packing and perforating method and apparatus for use in well bores A well tool apparatus having a perforating section at its lower end has an upper section comprised of a reservoir containing a compatible perforating fluid and a pump for pumping such fluid down through the perforating section and out the lower end of the... | 02/24/1976 |
