EUE Type Manual BOP Shaffer Ram Blowout Preventer With High Pressure Rating

The EUE sucker rod blowout preventer (BOP) is a wellhead safety control device specially developed for workover operations in oil and gas fields. It is core-matched with EUE (External Upset End) threaded sucker rods and is mainly applied to wellhead-opening operation scenarios such as sucker rod running and pulling, polished rod replacement, positive squeezing plug removal, and well flushing. Its core function is to quickly block blowout channels through precise sealing and mechanical locking mechanisms, effectively preventing oil and gas leakage, protecting the safety of operating personnel, the integrity of equipment, and avoiding environmental pollution. It is an indispensable well control key equipment for rod pumping well downhole operations.

1. EUE-Specific Sealing and Connection Design

Adopting a precisely matched structure of EUE-P (External Upset Pin) and EUE-B (External Upset Box), the bottom 3½" API EUE connection interface enables quick docking with the Christmas tree. The sealing surface undergoes special treatment to achieve zero-leakage sealing under high-pressure working conditions, and the connection stability is improved by 30% compared with ordinary thread types.

2. High-Efficiency Well Control Response Capability

Integrated with a dual-control structure of supporting ram and single ram, and equipped with a precision lead screw drive system, the well closing operation can be completed within 4 minutes, representing a 69% efficiency improvement over the industry average. It can quickly realize sucker rod locking and wellhead sealing in the event of sudden blowouts.

3. Wide Working Condition Adaptability

The main body is forged from AISI 4130-4140 alloy steel and strengthened by vacuum heat treatment. It can withstand a working temperature range of -20℃ to 200℃, with a maximum working pressure of 3000 psi (20.7 MPa), and is compatible with sucker rods of 5/8" to 1½" specifications. It meets the operational requirements of conventional wells, high-pressure wells, and low-temperature environments.

4. Lightweight Design and Easy Operation

Optimized split-type structural design reduces the overall weight by 25% compared with traditional equipment, enabling installation and disassembly without heavy lifting equipment. Equipped with standardized wrench operation interfaces, the operating procedures are simple and easy to understand, reducing the labor intensity of frontline personnel.

5. Multiple Safety Assurance Mechanisms

The ram is built with a slip tooth structure, which can firmly clamp the sucker rod and prevent the risk of upward ejection. The blowout preventer nipple adopts a two-section threaded connection, which can be shortened for storage after disassembly. Meanwhile, it reserves well washing and pressure well interfaces to support process expansion needs under emergency working conditions.

The product strictly complies with the API 16A blowout preventer design and manufacturing standard, SY/T5053.1-2000 Blowout Preventers and Control Devices – Blowout Preventers, and SY/T5127-2002 Specifications for Wellhead Equipment and Christmas Trees. It has obtained ISO 9001 quality management system certification and passed third-party authoritative testing. All components have undergone high-pressure pressure testing, fatigue cycle testing, and corrosion testing, and the key performance indicators meet the well control management rules of mainstream oil and gas enterprises such as CNPC (China National Petroleum Corporation) and CNOOC (China National Offshore Oil Corporation).

Main Applicable Scenarios: Various downhole operations requiring wellhead opening, including sucker rod running and pulling in rod pumping wells, polished rod replacement, well flushing and sand washing, fracturing and acidizing, and plug removal.

Core Application Value: Effectively controls blowout risks and reduces the incidence of operational safety accidents; simplifies installation and operation procedures and shortens non-productive time; adapts to various well conditions and sucker rod specifications and reduces equipment adaptation costs; meets environmental protection requirements, avoids environmental pollution caused by oil and gas leakage, and helps oilfields achieve safe, efficient, and green operations.