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| Number | Title | Issue Date |
| 6505559 | Well bore cutting and perforating devices and methods of manufacture A tubing and casing cutter is shown which can be assembled in the field from a plurality of pressed segmented pellets of free standing explosive material. The segmented pellets have a liner glued to at least one exposed face thereof. The pellets are glued... | 01/14/2003 |
| 6354219 | Shaped-charge liner 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... | 03/12/2002 |
| 6220370 | Circulating gun system A tubing conveyed perforating apparatus is shown which includes a tubular firing section which carries a plurality of explosive charges. The explosive charges are initially aligned with regions of reduced wall area provided in a tubular firing section whi... | 04/24/2001 |
| 6216596 | Zinc alloy shaped charge A shaped charge is shown with enhanced creep resistance for use in a perforating gun having an elongated spiral strip open to the wellbore through which the charges are attached. The shaped charge is a hollow bodied capsule and hollow bodied cap, both thr... | 04/17/2001 |
| 6123001 | Detonating cord cutter A device for cutting a detonating cord having an explosive core is provided. The device includes a detonating cord holding member having a cord holding portion, such as an aperture or recess, configured to closely receive the detonating cord so that the d... | 09/26/2000 |
| 6062310 | Full bore gun system A tubing conveyed perforating apparatus is shown which includes a tubular assembly made up of a plurality of tubular sections. A plurality of explosive charges are located within the interior bore of at least two of the tubular sections of the tubular ass... | 05/16/2000 |
| 6012392 | Shaped charge liner and method of manufacture Shaped charge liners are formed from an alloy of nickel, tin, and copper, which is first formed into a powder, and then pressed into strips. The pressed strips of powdered alloy are next sintered and then cold rolled. Thereafter, the powdered, pressed, an... | 01/11/2000 |
| 5829538 | Full bore gun system and method A tubing conveyed perforating apparatus is shown which includes a tubular assembly made up of a plurality of tubular sections. One or more elongate charge holders are located within the interior bore of the tubular assembly and carry explosive charges the... | 11/03/1998 |
| 5797464 | System for producing high density, extra large well perforations A shaped charge and liner having a minimum outside diameter determined by the formula: DL =2.625-0.3571(6 -DID) Where: DL =Liner Minimum Outside Diameter DID =Carrier Inside Diameter The geometry of the shaped charge redu... | 08/25/1998 |
| 5785130 | High density perforating gun system A high density perforating gun having a carrier housing tube and an interior charge holder tube through which are mounted zinc alloy shaped charges in a phased relationship between about 135 and 145 degrees. The 135 to 145 degree phased relationship provi... | 07/28/1998 |
| 5662178 | Wave strip perforating system A perforating gun having an elongated mounting strip and a selected wave or non-linear, zig-zag form as seen in a plan view, with an outer surface diameter sized for convenient insertion and removal from a well. The mounting strip has a series of openings... | 09/02/1997 |
| 5638901 | Spiral strip perforating system A perforating gun having an elongated, spiral strip with an outer surface, cylindrical about a longitudinal axis, and a diameter sized for convenient entry and removal from a well. The strip has a series of threaded openings spaced in intervals for mounti... | 06/17/1997 |
| 5542480 | Perforating gun with retrievable mounting strips A longitudinally slotted carrier having one end adapted for mounting on a tubing string, the carrier being nonplanar, with a slotted configuration and interior dimensions to enable capsule charge orientation at selected phases between 0 and 360 degrees. T... | 08/06/1996 |
| 4817787 | Detonatong cord safety transport system A system for safely transporting detonating cord that uses a container with a mounting board of insulating material with a walled path through which the cord is threaded. The path has a series of loop regions and adjoining, parallel regions through which ... | 04/04/1989 |
