Product: 3-Piece Packer Element Sets | NBR, HNBR & Viton® Options

1. Executive Summary: The Industry Standard for Versatile Isolation

The 3-Piece Packer Element Set is the most widely used sealing configuration for retrievable packers and bridge plugs. Its proven design offers the optimal balance between sealing capability and retrievability.

At Royal Way, we offer these sets in three premium material grades—NBR, HNBR, and Viton®—to suit every wellbore environment, from standard shallow wells to deep, hostile HPHT (High-Pressure High-Temperature) applications. Whether you are running a standard production packer or a service tool for acidizing, our element sets provide the positive zonal isolation you need to secure your well.

2. System Mechanics: The “Hard-Soft-Hard” Advantage

Our 3-piece sets utilize a scientifically engineered Durometer Staging System (typically 90-70-90 Shore A) to manage high differential pressures.

• The Center (Spacer) Element:

  • Hardness: 70 Durometer (Softer).

  • Function: This element energizes first. Its elasticity allows it to flow into casing irregularities and pits, creating the primary liquid-tight seal.

• The End Elements:

  • Hardness: 90 Durometer (Harder).

  • Function: These rigid elements expand to bridge the gap between the tool and the casing wall. They act as a Backup System, preventing the softer center element from extruding (flowing) out of the seal area under high pressure.

3. Material Selection: Choose Your Performance Level

We stock element sets in three distinct compounds to match your specific downhole conditions:

🟢 Option A: Standard Service (NBR / Nitrile)

• Color: Black.

• Temp Rating: -20°F to +250°F (-29°C to +121°C).

• Best For: Standard oil and gas production, vertical wells, water injection.

• Why Choose: The most cost-effective solution. Our high-modulus NBR offers excellent resistance to abrasion and compression set in non-corrosive environments.

🔵 Option B: High-Temp / Sour Gas (HNBR)

• Color: Black (Green dot/stripe identification).

• Temp Rating: -20°F to +325°F (-29°C to +163°C).

• Best For: Wells with moderate Hydrogen Sulfide (H2S), deeper formations, or longer duration sets.

• Why Choose: HNBR (Hydrogenated Nitrile) bridges the gap between NBR and Viton. It is mechanically tougher than NBR and resists chemical degradation in sour environments.

🟠 Option C: Extreme Service (FKM / Viton®)

• Color: Black (White dot) or Brown/Orange.

• Temp Rating: -15°F to +400°F (-26°C to +204°C).

• Best For: Acidizing Operations, deep gas wells, hot oiling, and high-concentration chemical injection.

• Why Choose: Unmatched resistance to heat and chemicals. If you are pumping acid or operating in a “hot kitchen,” Viton® is mandatory to prevent element swelling and failure.

4. Compatibility & Applications

Our sets are dimensionally engineered to serve as Drop-In Replacements for the industry’s most common tools:

• Tool Styles:

  • AS1-X & AS1-R Retrievable Packers.

  • Model R Double-Grip Packers.

  • AD-1 Tension Packers.

  • Mechanically Set Bridge Plugs (RBP).

• Casing Sizes:

  • Available for 4-1/2″, 5-1/2″, 7″, and 9-5/8″ Casing.

  • Custom sizes available upon request.

5. Operational Benefits

• Superior “Memory” (Retrievability): One of the biggest risks with retrievable packers is the element not relaxing after the job, causing the tool to get stuck. Royal Way elements are formulated for high Rebound Resilience, ensuring they retract to their original OD for easy retrieval.

• Anti-Swab Design: The chamfered edges on our End Elements allow for smoother running in and pulling out of the hole, reducing the piston effect (swabbing).

6. Technical Specifications Table

7. Ordering Information

When ordering, please specify:

1. Casing O.D. (e.g., 5-1/2″).

2. Casing Weight (e.g., 15.5-20 ppf) – Crucial for correct element OD.

3. Material (NBR, HNBR, or Viton).