| Patent Number |
Title Of Patent |
Date Issued |
| 6505559 |
Well bore cutting and perforating devices and methods of manufacture |
January 14, 2003 |
| 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 to a backup plate with two mirro |
| 6354219 |
Shaped-charge liner |
March 12, 2002 |
| 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, bu |
| 6220370 |
Circulating gun system |
April 24, 2001 |
| 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 which initially surrounds the ch |
| 6216596 |
Zinc alloy shaped charge |
April 17, 2001 |
| 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 threaded for easy attachment to |
| 6123001 |
Detonating cord cutter |
September 26, 2000 |
| 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 detonating cord is held in place |
| 6062310 |
Full bore gun system |
May 16, 2000 |
| 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 assembly. A firing head is carried o |
| 5829538 |
Full bore gun system and method |
November 3, 1998 |
| 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 thereon. A firing head is carried on |
| 5797464 |
System for producing high density, extra large well perforations |
August 25, 1998 |
| A shaped charge and liner having a minimum outside diameter determined by the formula:Where:D.sub.L =Liner Minimum Outside DiameterD.sub.ID =Carrier Inside DiameterThe geometry of the shaped charge reduces the chances of interference between charges by controlling burn time, as does the posi |
| 5785130 |
High density perforating gun system |
July 28, 1998 |
| 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 provides for an 18 shot per foot p |
| 5662178 |
Wave strip perforating system |
September 2, 1997 |
| 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 spaced in intervals for mounting |
| 5638901 |
Spiral strip perforating system |
June 17, 1997 |
| 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 mounting capsule explosive charges in a |
| 5542480 |
Perforating gun with retrievable mounting strips |
August 6, 1996 |
| 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. The carrier has a frangible seam t |
| 4817787 |
Detonatong cord safety transport system |
April 4, 1989 |
| 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 the parallel cord is separated wi |
