RTL Type 2.5" Swab Cups Optimized for Medium Well Loads

Product Introduction

The 2-1/2 inch RTL Type Swab Cup is a precision-molded downhole tool engineered for consistent fluid recovery in medium to light load applications. Featuring a specialized dual-lip architecture, the RTL design provides redundant sealing surfaces that ensure a positive interference fit against the tubing wall. This configuration is particularly effective in wellbores with minor internal surface irregularities, as the dual-lip structure maintains seal integrity where single-lip cups might bypass fluid. Manufactured from high-grade Nitrile (NBR), these cups offer the perfect balance of flexibility and abrasion resistance for standard oilfield swabbing operations.

Technical Specifications

	Material:	High-Abrasion Nitrile (NBR)
	Size:	2 1/2 Inch
	Style:	RTL
	Hardness:	80 to 90 Shore A

Operational Field Guidelines

Stacking Recommendations: For ultra-light loads, 2 cups are usually sufficient. For medium loads or deeper wellbores, stacking 4 to 6 RTL cups on a single mandrel is recommended to distribute the load across multiple sealing edges.

Mandrel Compatibility: These cups are designed to seat flush against standard API 2.5 inch swab mandrels. Ensure the mandrel shoulder is free of debris to prevent lopsided wear on the dual lips.

Descent Control: To prevent premature wear, maintain a steady wireline speed during descent. Rapid impacts with the fluid column can cause the dual lips to "feather" or lose their sharp sealing edge.

Environmental Care: Store unused RTL cups in a cool, dark environment. Exposure to direct sunlight or ozone from electrical motors can lead to surface hardening and reduced lip flexibility.

Key Features and Benefits

1. Redundant Dual-Lip Sealing: The dual-lip profile creates two independent sealing contact points. This redundancy ensures that even if the leading lip encounters a minor tubing imperfection, the secondary lip maintains the hydrostatic seal to prevent fluid loss.

2. Optimized for Medium Loads: Unlike heavy-duty single-lip cups that may be too rigid for lighter columns, the RTL Dual-Lip design provides enough flexibility to actuate under moderate fluid weight, maximizing lift efficiency per stroke.

3. High Abrasion NBR Compound: Molded from industrial-strength Nitrile, the elastomer is specifically formulated to resist the frictional heat and wear associated with high-velocity wireline runs.

4. Flexible Interference Fit: The RTL design is engineered to conform to the internal diameter of 2.5 inch nominal tubing, providing a secure seal in both new and aging pipes with slight scale or pitting.

5. Steel-Free Flexible Base: The all-rubber base construction allows for greater overall tool string flexibility, making it easier to navigate through slightly deviated wellbores without sticking. 

Why Partner With Our Engineering Team?

ISO 9001:2015 Quality Standards: Our facility operates under a strict Quality Management System, ensuring repeatability across high-volume production runs.
In-House Tooling & Design: Our engineers assist with Design for Manufacturing (DFM), helping to refine part geometry to reduce costs and improve performance.

Frequently Asked Questions

Question:Question: What is the benefit of the Dual-Lip design over a standard single lip?
Answer: The Dual-Lip design provides a backup seal. If the first lip encounters a rough spot in the tubing, the second lip maintains the fluid column, ensuring higher recovery rates per run.

Question: Is this cup suitable for high-sand environments?
Answer: While the RTL Dual-Lip handles minor scale well, for extremely high sand concentrations, an SV (Sleeve Valve) style may be more appropriate due to its higher debris tolerance.

Question: Can I use these cups in 2-1/2 inch casing?
Answer: These are specifically designed for 2.5 inch nominal tubing. Please verify the internal diameter of your casing to ensure the interference fit is adequate for a proper seal.

Question: Does NBR work with oil-based completion fluids?
Answer: Yes, the high-grade Nitrile (NBR) used in these cups is specifically chosen for its excellent resistance to oil, diesel, and common hydrocarbons.