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Rongsheng Company Develops and Manufactures China’s Highest Pressure-Rated Boltless-Bonnet Ram BOP
2021-08-27
On August 26, the FZ28-140 (11"-20,000psi) boltless-bonnet ram BOP independently developed by Rongsheng Company successfully passed the user's on-site acceptance inspection. As the well control product with the highest pressure rating currently available in China, and with a design structure that has been granted a national invention patent, this product features convenient operation and stable performance. The time required for on-site ram replacement has been reduced by more than eight times, earning strong customer favor and high praise.
The FZ28-140 (11"-20,000psi) boltless-bonnet ram BOP breaks through the structural design of existing similar products both in China and abroad by innovatively adopting a multi-tooth interlocking block connection method, which provides strong pressure-bearing capacity. This structural design is particularly suitable for the connection of large-bore, high-pressure BOPs. Under the witness of the National Industrial Well Control Quality and Safety Supervision and Evaluation Center, the product completed type testing in accordance with the requirements of API Spec 16A PR2. Under the witness of Sichuan Kete Testing Technology Co., Ltd., it also completed product manufacturing, as well as the user-required hydraulic circuit gas-tightness test, 20 factory sealing tests, and a 140 MPa gas-tightness test. All tests were passed on the first attempt.
According to reports, this BOP structure is simple and convenient to operate and maintain. When replacing the rams, it eliminates the need to use special tools to remove and install high-torque bolts weighing more than 50 kg. Instead, the interlocking and disengagement between the block, the body, and the bonnet can be completed manually. The operation is more convenient and labor-saving, and the time required has been reduced from 60 minutes to about 7 minutes.
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