Dragging string hydraulic jetting tool is well stimulation which combined of perforating, fracturing and isolation. High-speed liquid that from specialized jetting tools could shoot through casing, rock and shape hole. Bottom hole pressure is increased by annular fluid infusion, which exceed stratum fracturing pressure and crack layer. This method has advantage of deeper than ordinary perforating, aperture is larger and less hurt to stratum.
Safety joint+ centralizer+ ejector+ packer+ centralizer (hydraulic anchor)+ check valve+ coupling+ screw pipe+ guide head
Notes: The coiled tubings are used for connecting all parts.
| 5 1/2 monolayer dragging type jetting tool (CT-Y211 packer) |
| No. |
Name |
Outer diameter |
Inner diameter |
Length |
Shape of connection buckle |
Remarks |
| 1 |
Outer slip connector |
73 |
38.1 |
364 |
2 3/8UP TBG |
|
| 2 |
Hydraulic release |
79.4 |
31.75 |
668 |
2 3/8UP TBG |
Releasing pressure: 19-21MPa; GS fishing neck 2.62＂ |
| 3 |
Coiled tubing ejector |
105 |
36 |
405 |
2 3/8UP TBG |
The nozzles and quantity can be changed according to the user requirements. |
| 4 |
CT-Y211 packer |
116 |
45 |
1790 |
2 3/8UP TBG |
Length of rubber sleeve: 148; in addition to the centralizer, other maximum outer diameters: 110 |
| 5 |
Coupling locator |
128.2 |
38 |
455 |
2 3/8UP TBG |
Locating load: 2T |
| 6 |
2 3/8＂guide device |
105 |
|
230 |
2 3/8UP TBG |
Steel ball 34.925 |
