Through Tubing Perforating Systems were developed for use in wells with existing production tubing and were designed to pass through the tubing to the zone to be perforated. Eastern United provides a variety of gun systems including high pressure and high temperature systems
The Strip Gun Systems are high-performance, exposed capsule gun suitable for through-tubing perforating. The Charges possess the three most important features of an ideal perforator – Ideal Phasing, Deep Penetration, and High Shot Density. When fired, charge cases shatter leaving strip, charge caps, head and other accessories intact for retrieval. Carrier strips are common to both the 1-11/16†and 2-1/8†gun system.
| O.D.(IN.) | SHOT DENSITY (SPF) DRY OR FLUID | PHASING | EXP WEIGHT (G.) | CASING O.D. (IN.) | ENTRY HOLE (IN.) | PEN. NORM @ 5000 PSI (IN.) | TEMP 1HR | DATA SOURCE |
| 1 11/16 | 4F/6F | 0° | 8.4 | 4 ½ | 0.23 | 25.19 | 375°F | API RP/19B |
| 2 1/8 | 4F/6F | 0° | 14.2 | 5 ½ | 0.26 | 33.46 | 375°F | API RP/19B |
| O.D.(IN.) | SHOT DENSITY (SPF) DRY OR FLUID | PHASING | EXP WEIGHT (G.) | CASING O.D. (IN.) | ENTRY HOLE (IN.) | PEN. NORM @ 5000 PSI (IN.) | TEMP 1HR | DATA SOURCE |
| 1 11/16 | 4F/6F | 0°/60°/40° | 8.3 | 5 ½ | 0.48 | 10.54 | 310°F | RP/43 |
| 2 1/8 | 4F/6F | 0°/60°/40° | 12.5 | 5 ½ | 0.62 | 12.97 | 310°F | RP/43 |
Hollow Steel Carrier Guns has the charges contained inside a carrier and are hence not exposed to the wellbore fluids. Installation of perforating charges and detonating cord is fast and simple. Reliability is very high due to rugged and robust hardware in conjunction with minimal sealing elements. A variety of gun systems are available including high pressure and high temperature systems.
These systems feature a Spot-face or “Scallop†on the carrier at the charge location to minimize burrs and optimize charge performance. The perforating charges are retained, within a charge tube located inside the gun carrier and aligns the charges to the scallop. The scalloped carrier is expendable it is retrieved from the well and is discarded after use.
Gun connections (gun subs) are used to connect several gun lengths together and also provide a means of attaching the gun system to wireline tools such as a collar locator. Gun subs may be used multiple times and are available for a wide variety of wireline and tubing conveyed applications.
Deep Penetrating Charge Specifications
O.D.(IN.) |
SHOT DENSITY (SPF) DRY OR FLUID | PHASING | EXP WEIGHT (G.) | CASING O.D. (IN.) | ENTRY HOLE (IN.) | PEN. NORM @ 5000 PSI (IN.) | DATA SOURCE |
| 1 9/16 | 6F | 60° | 3 | 2 7/8 | 0.18 | 13.64 | API RP/19B |
| 1 11/16 | 4D / 6D | 60°/90°/180° | 3.3 | 2 7/8 | 0.16 | 15.13 | API RP/19B |
| 2 1/8 | 4D / 6F | 60° | 6.5 | 2 7/8 | 0.26 | 25.9 | API RP/19B |
| 2 1/2 | 4D / 6F | 0°/60°/90°/180° | 11.1 | 3 1/2 | 0.32 | 29.81 | API RP/19B |
Big Hole Charge Specifications
O.D.(IN.) |
SHOT DENSITY (SPF) DRY OR FLUID | PHASING | EXP WEIGHT (G.) | CASING O.D. (IN.) | ENTRY HOLE (IN.) | PEN. NORM @ 5000 PSI (IN.) | DATA SOURCE |
| 1 11/16 | 4D/6D | 0°/60°/90°/180° | 3.3 | 2 7/8 | 0.37 | 3.5 | API RP/19B |
| 2 1/8 | 4D/6D | 0°/60°/90°/180° | 6.4 | 2 7/8 | 0.42 | 3.68 | API RP/19B |
| 2 1/2 | 4D/6F | 0°/60°/90°/180° | 11.5 | 3 ½ | 0.67 | 6.09 | API RP/19B |