BOP Rubber Accessories: Sealing Wellheads and Preventing Oil & Gas Leaks

Annular BOP Packing Element

BRA-02-ABPE

It is a rubber packing element used to provide full circumferential sealing when wellhead overflow occurs or when the drill string needs to be sealed. The seal is achieved by hydraulically driving the upper cover downward to create a tapered compression deformation. This component is one of the most critical and most frequently used sealing parts in well control equipment. It is available in various sizes and specifications to fit mainstream BOP models.

Main Features:

• High versatility. Capable of sealing drill pipe, casing, tubing, and open-hole wellheads of various shapes.
• High media resistance. Made from materials that are resistant to H₂S, oil, and other downhole media.
• High and low temperature resistance. -29 °C to +150 °C (depending on material).

Main Specifications

• I.D. sizes: Ø5-1/8", Ø7-1/16", Ø11", Ø13-5/8", Ø18-3/4".

Maintenance & Replacement Recommendations

• Keep the hydraulic system clean and prevent oil contamination from degrading the rubber core.
• Storage temperature 5–25 °C; avoid sunlight and ozone.
• Replace every 400 opening/closing cycles or after a total of 600 operating hours.
• Apply dedicated silicone-based grease to prevent tearing.
• For long-term shutdown, store with the pressure relieved.

Spherical BOP Packing Element

BRA-03-SBPE

It is a main sealing component installed inside the spherical BOP. It consists of a spherical-cap rubber body and a metal framework. Hydraulic oil drives the piston to compress the packing element, causing it to contract along the spherical surface and seal the wellhead. It is available in various sizes and specifications to fit mainstream BOP models.

Main Features:

• High sealing reliability. Capable of sealing drill pipe, casing, tubing and open-hole wellheads, maintaining good sealing performance even under eccentric conditions.
• High pressure resistance. commonly used in 5,000-10,000 psi high-pressure BOP systems
• High and low temperature resistance. -29 °C to +150 °C (depending on material).

Maintenance & Replacement Recommendations

• Inspect the packing element after every 400–500 opening/closing cycles or after every 400–700 hours of operation.
• Check for cracks, bulging, debonding, or wear on the sealing lips.
• Keep the hydraulic system fluid clean.
• Avoid exposure to direct sunlight, heat sources, and solvents during storage.
• Depressurize the system for long-term storage.

Rotating BOP Packing Element

BRA-04-RBPE

Manufactured from oil-resistant rubber composite material, it achieves dynamic sealing of drilling fluid media. During drilling operations, it maintains wellhead sealing while the drill string rotating and moving vertically to prevent blowouts and mud spillage. The product complies with API Spec 16A requirements and is available in various sizes and specifications to fit mainstream BOP models.

Main Features:

• Excellent dynamic sealing performance. It maintains reliable sealing while the drill string is rotating.
• Wear-resistant wiper. Made of hydrogenated nitrile butadiene rubber (HNBR) and polyurethane (PU), it offers high tear strength and resistance to sand abrasion.
• High and low temperature resistance: -29 °C to +150 °C (HNBR); up to +180 °C (FKM).

Main Specifications:

• I.D. sizes: Ø2-7/8", Ø3-1/2", Ø4-1/2", Ø5", Ø5-1/2", Ø5-7/8"

Maintenance & Replacement Recommendations

• Match dedicated packing elements according to the equipment model.
• During opening and closing, ensure the hydraulic oil is clean and the pressure is stable; avoid prolonged no-load rotation that may cause dry friction.
• Inspect every 300–500 hours of operation or after 500 opening/closing cycles;
• Store in a cool, dry, light-protected place to prevent rubber aging.