An expansion-element packer series for acidizing, fracturing and water-injection strings. Tubing pressure enters the element chamber through mandrel slots; bleeding the tubing pressure allows the element to retract.
| Model | K344-146 | K344-114 | K344-110 | K344-100 | K344-90 |
|---|---|---|---|---|---|
| Overall length (mm) | 880 | 860 | 860 | 860 | 860 |
| OD (mm) | 145 | 114 | 110 | 100 | 90 |
| ID (mm) | 62 | 58 | 58 | 52 | 40 |
| Expansion startup pressure (MPa) | 0.8–1.5 | 0.8–1.5 | 0.8–1.5 | 0.8–1.5 | 0.8–1.5 |
| Working pressure (MPa) | 50 | 50 | 50 | 50 | 50 |
| Working temperature (°C) | 120 | 120 | 120 | 120 | 120 |
| UP/TBG connection | 2 7⁄8 | 2 7⁄8 | 2 7⁄8 | 2 7⁄8 | 2 7⁄8 |
The element skeleton is manufactured from stainless spring-steel strips and uses a special rubber formulation.
The supplied record states a 120°C, 50 MPa, 72-hour cyclic pressure test with five upper/lower pressure cycles.
Used in acidizing, fracturing and water-injection strings.
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