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Landing Nipple
China Vigor's Landing Nipple for top No-go, Bottom No-go, and Selectivity, Many landing nipples can be run in the production tubing without any loss in operational flexibility.
Description
- Landing Nipples are installed within the production tubing string to ensure that downhole tools such as plugs, safety valves, and flow control devices can be accurately located and positioned. They provide a means to securely land and lock these tools at specific depths within the well.
- It features an internal profile that acts as a locating and orienting guide for the tools being run. This profile mates with a corresponding outer profile on the tool, ensuring it lands in the correct position and orientation. Once located, the nipple has a locking groove that allows the tool's locking mechanism (typically a collet or slips) to engage and secure it in place.
- It incorporate sealing bores that enable a pressure-tight seal to be made between the landed tool and the nipple's inner diameter. This sealing ability is crucial for isolating pressure from above or below the tool, enabling functions like shut-in, testing, or flow control.
Technical Parameters
|
Tube Size |
VX Type |
VXN Type |
Lock Mandrel I.D. |
||||||||
|
Size |
Weight |
I.D. |
Seal hole Diameter |
Seal hole Diameter |
NO-GO I.D. |
||||||
|
In. |
lb/ft |
In. |
mm |
In. |
mm |
In. |
mm |
In. |
mm |
In. |
mm |
|
2-3/8 |
4.6 |
1.995 |
50.67 |
1.875 |
47.63 |
1.875 |
47.63 |
1.791 |
45.49 |
1 |
25.40 |
|
4.7 |
|||||||||||
|
2-7/8 |
6.4 |
2.441 |
62 |
2.313 |
58.75 |
2.313 |
58.75 |
2.205 |
56.01 |
1.38 |
35.05 |
|
6.5 |
|||||||||||
|
3-1/2 |
9.3 |
2.992 |
76 |
2.813 |
71.45 |
2.813 |
71.45 |
2.666 |
67.72 |
1.75 |
44.45 |
|
10.2 |
2.922 |
74.22 |
2.75 |
69.85 |
2.75 |
69.85 |
2.635 |
66.93 |
|||
|
4-1/2 |
12.75 |
3.958 |
100.53 |
3.813 |
96.85 |
3.813 |
96.85 |
3.725 |
94.62 |
2.62 |
66.55 |
|
5-1/2 |
17 |
4.892 |
124.25 |
4.562 |
115.87 |
4.562 |
115.87 |
4.455 |
113.2 |
3.12 |
79.25 |
Advantages
① Diverse Switching Options
Landing Nipple provides diverse switching options for tubing. Several nipples could be placed in the production string. Thereby offering an unlimited number of positions for setting and locking surface controls.
② Versatility and Flexibility
It provides a versatile solution by allowing multiple downhole tools and flow control devices to be installed at different depths within the same tubing string, Any number of VG-X Landing Nipple can run in one trip string. This flexibility enables operators to tailor the well configuration to specific operational requirements, facilitating activities like zonal isolation, flow control, and well interventions without the need for dedicated runs.
③ Efficient Well Interventions
By enabling tools to be selectively landed and locked at predetermined depths, Nipples streamline well intervention operations. Rather than retrieving the entire tubing string, specific tools can be conveyed and precisely positioned using wireline or coiled tubing, minimizing rig time and operational costs.
④ Zonal Isolation and Control
It allows for the installation of plugs, valves, and other isolation devices at strategic locations along the wellbore. This capability enables effective zonal isolation, compartmentalizing the well into discrete segments for purposes such as selective treatment, testing, or managing production from multiple zones independently.
⑤ Flow Management
The ability to land chokes, flow control valves, and other production regulation tools at desired depths provides operators with greater control over surface flowing pressures and production rates. This enhanced flow management capability optimizes production while mitigating risks associated with excessive wellhead pressures.
⑥ Safety and Environmental Protection
Nipples facilitate the strategic placement of safety valves, such as Surface-Controlled Subsurface Safety Valves (SCSSV), at critical locations along the wellbore. In the event of an emergency, these valves can be remotely actuated to shut in the well, enhancing personnel safety and minimizing environmental impact.
Types of Landing Nipples
① X-Type: This configuration is commonly used in applications involving standard weight tubing where moderate pressure differentials are expected. The X-Type profile is designed to provide a reliable and secure landing point for the corresponding lock mandrels.
② XN-Type: The XN profile features an angled shoulder as opposed to the square shoulder of the selective types. This design requires a "no go" shoulder of an adapter sub made up at the bottom of the lock to make contact with a bore restriction in the "no go" nipple, ensuring the lock mandrel is securely locked in place.
③ R-Type: Typically utilized with heavy weight tubing, the R-Type Nipple is designed to handle higher pressure differentials compared to the X-Type. It offers a robust solution for securing downhole tools in more demanding well conditions.
④ RN-Type: Similar to the XN profile, the RN-Type Landing Nipple features an angled shoulder for enhanced locking capabilities. It is designed for use in situations where a high level of security is required to maintain the position of the downhole tools, especially in heavier tubing applications.
Applications, Component and How It Works?
Applications
- Land blanking plugs to shut in well or test the production tubing. Land velocity type safety valves.
- Land equalizing check valves.
- Land chokes to reduce surface flowing pressure.
Component
The inner bore of the Landing Nipple consists of one selective profile, one locking groove, and one seal bore.
How It Works?
When working, the braking ratchet of the lock mandrel stretches out into its groove. Blanking plugs, flow control devices and testing instruments can be hung below the lock mandrel.
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