Shaped charge ZKPO-PP-3DK of “puncher” type in assembly with perforating gun KPO36 of DK-2 type has been designed for operations connected with the restoration of circulation between the tubing cavity with the wall thickness up to 7 mm and annular space.
Specific Features
- No damages to the casing adjacent to the tubing after the gun shooting;
- Universal movable clamp ensures that the gun is pressed to the inner wall of the tubing with a wide range of sizes from 60 to 114 mm and can go through the lubricator of a small diameter (65 mm);
- Due to the constant pressing of the gun to the inner wall
of the tubing and the linear arrangement of charges with zero phasing,
guaranteed penetration from 1 to 6 holes in the tubing wall (depending
on the number of installed charges) is ensured;
- Ability to work with a small-sized CCL for QCA;
- Loads with a quick-release connection when working through a lubricator at the gun bottom part.
KPO36DK (DK-2) Gun Characteristics
| Parameter | Value |
|---|---|
| Outside diameter (without a clamp) | 36 |
| Min drift diameter of the well equipment, mm | 48 |
| Max allowable hydrostatic pressure, MPa | 80-1401) |
| Min allowable hydrostatic pressure, MPa | 0,1 |
| Max allowable operating temperature during 1 hour, °С | (170-200)±52) |
| Max dogleg severity of the borehole, degree/10 m | 5,0 |
| Charge phasing, degree. | 0° |
| Max perforation density, holes/m | 6 |
| Max length of intervals perforated per one well run, m | 0,6 |
| Max diameter of the gun carrier after shooting, mm: | |
| - in liquid medium | 42 |
| - in gaseous medium | 44 |
| Number of charges ZKPO-PP-3DK, min/max, pieces | 1/6 |
| Average entrance hole diameter, mm:3) | |
| Tubing 60 | 4,0 |
| Tubing 73 | 3,0 |
| Tubing 89 4) |
2,0 |
| Tubing 102 4) | |
| Tubing 114 4) | |
|
1) Can change depending on the mechanical properties of carrier tubes. 2) Max allowable operating temperature and hold time for a loaded gun to be specified by the Manual for explosives having minimum allowable operating temperature compared to the other explosives contained in the explosive chain of the gun and to the characteristics for the applied rubber products.
3) Actual hole diameter can differ
from the indicated one depending on the tubing strength group but
cannot be less than 2 mm for any strength group.
4) The penetration of the tubing with
the wall thickness more than 7 mm with the specific weight of the
cement slurry more than 1,2 g/cm3 and in the presence of the sediment
crust or scale on the inner wall of the tubing is not guaranteed. |
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