Product Specification
| Applicable casing | OD(mm) | Length(m) | Bolt shearing force(T) | Mills OD (mm) | Mills Connection |
| 5-1/2" 14~17# |
114 | 3.2 | 5.5-6.5 | 8-10 |
2-3/8REGxNC31 BOX
|
|
5-1/2" 20#
|
108 | 2.9 | 5.5-6.5 | 8-10 |
2-7/8REGxNC31 BOX
|
|
7"
23~26#
|
140 | 4.2 | 12-14 | 18-20 |
3-1/2REGxNC38 BOX
|
|
9-5/8"
43.5~47#
|
203 | 5.9 | 18-20 | 24-26 |
4-1/2REGxNC50 BOX
|
|
13-5/8"
≤72#
|
292 | 8.6 | 20-24 | 30-32 |
6-5/8REGx6-5/8REG BOX
|
Advantages and Features
- Drilling, window opening and window repair are completed in one trip
- Specially designed window opening milling shoes combined with imported carbide can
- quickly open windows (2~4 hours)
- Anchored anti-rotation slips ensure efficient milling and drilling
- Anchor and whipstock are retrievable
- It can meet the window opening requirements of ultra-short radius drilling
When the whipstock string is lowered to the preset depth and orientation, the mud pump is activated. Driven by pump pressure, the piston is pushed to shear the anchoring shear pins, thereby ejecting the slips. Then, the string is pressed downward to shear the connecting bolts between the mill shoe and the whipstock. After that, a certain downward pressure is continuously applied to ensure the anchoring structure is fully set, and then the casing window milling operation can be carried out. If it is necessary to retrieve the whipstock subsequently, a matching taper tap can be run into the well for fishing. After the taper tap successfully catches the whipstock, the string is lifted to a specified tonnage to release the anchoring suspension and retrieve the whipstock.
Since its inception, our R&D team has been committed to continuous innovation, overcoming a number of technical hurdles and developing highly efficient and reliable downhole drilling tools, which has greatly enhanced the operational efficiency of oilfield projects.
By optimizing production processes and introducing intelligent production equipment, we not only guarantee the high quality and stability of our products, but also help customers cut down their operating costs remarkably. Take our one-trip casing exit system applied in CNPC's projects as an example. It eliminates the need for repeated operations, enabling the task to be completed in a single run. This not only saves construction time but also boosts the customers' operational efficiency by at least 30% Read More
FAQ
Q: What oilfield operation scenarios is this One-trip Casing Exit System mainly suitable for?
A: It is mainly applicable to scenarios such as old well casing damage repair, remaining oil tapping, and directional sidetracking, especially for oilfield projects like those of CNPC that have high requirements for operation cycles and complex wellbore trajectories.
Q: How does its core operation process differ from that of traditional windowing tools?
A: There is no need for multiple trips of running and pulling the drill string. After the string is lowered to the predetermined position, anchoring, windowing, and sidetracking operations can be completed in one go, eliminating the cumbersome steps of repeated docking and commissioning required by traditional tools.
Q: What are the specific efficiency advantages of this system compared with traditional equipment?
A: It can reduce the operation period by at least 30%, avoid the risks of repeated operations, and reduce the wear and tear of equipment during running and pulling. It helps oilfield projects to significantly improve the overall construction efficiency.
Q: Which components and links should be focused on during daily maintenance?
A: It is necessary to regularly inspect the slip anchoring mechanism, the sealing performance of hydraulic pistons, and the wear degree of cutting tools. During storage, anti-rust treatment should be well done and functional commissioning should be carried out periodically.
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