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BOPs are one of the first lines of defense in controlling an oil well. When activated, the hydraulic pressure drives the piston, which in turn closes the ball. Closing of the sphere occurs in a smooth, simultaneous upward and inward motion, rather than a horizontal motion. HRSB is a top industry Manufacturer of Annular/Spherical Blowout Preventer (BOP), please contact us if you need.
Spherical BOPs are compact annular BOPs that reliably seal kelly, drill pipe, tool joints, drill collars, casing or wireline of virtually any shape or size.
The ball valve also provides positive pressure control for running drill pipe in and out of the hole.
They are available in Bolt Cover, Wedge Cover, Double Wedge Cover and NXT models, which include the following special features:
Rugged, reliable sealing elements provide a reliable seal after hundreds of full working pressure tests
Rugged, simple construction;
only five main parts Compact body saves space; height is 15% to 20% lower than some other annular BOPs
Simple hydraulic system; only two hydraulic connections requiredWear rings on moving parts prevent metal-to-metal contact;
this feature extends preventer life Applies to H2S services. Standard model suitable for internal H2S service, simple bolt and lifting shackle replacement converts it to external H2S service
Easy maintenance;
no need to bring mud or grit into the hydraulic system when replacing components Steel segments reinforce the sealing element but do not protrude into the wellbore when the element is opened
Our development relies on advanced equipment, excellent talents and continuous strengthening of Spherical BOP,BOP Pressure Testing,BOP Oilfield technology.
Welcome your traveling to and any your inquires,sincerely hope we could have chance to cooperate along with you and we can build-up extensive nicely small business romantic relationship along with you.
The product will supply to all over the world, such as Barbados ,Libya ,Liechtenstein ,Moldova ,São Tomé and Príncipe . We always adhere to honesty, mutual benefit, and common development. After years of development and the unremitting efforts of all employees, we now have a complete export system and diversified logistics solutions to fully meet customers' sea, air, and international express delivery. and logistics services. They trust us and always place repeat orders. If you have a need for any of our products, please contact us immediately. OUR VISION:To become a global leader in environmentally friendly industrial Subsea Blowout Preventer technologies while providing the best possible customer service.
Stripping is smooth with a HRSB because the element opens and closes so easily. The steel segments molded into the rubber make metal-to-metal sliding contact with the sphere of the housing. This provides a much lower coefficient of friction than rubber-to-metal contact. Well pressure assists will not cause it to oversea!, since the element's design and method of energization counteract the well bore pressure acting on the piston. During stripping out, well pressure and pipe movements are in the same direction. Rubber compresses firmly against the steel segments at the top of the element, but rubber at the bottom is only lightly compressed. This creates a "funnel effect" that makes it easy for a tool joint to enter the sealing element. Hydraulic pressure bleeds off, allowing the element to expand and accommodate the larger O.D. of the tool joint.
When stripping in, well pressure and pipe movement oppose each other. Well pressure compresses the rubber portion of the element against the steel segments as the tool joint moves down into the Spherical.
Sealing elements are available in natural and Nitrile rubber compounds. This allows the HRSB to be fitted for any type of service water base mud, oil base mud, and low temperature. Natural rubber offers excellent fatigue and wear life in water base muds, and operates well in lower temperatures. This allows the Spherical to be fitted for any type of service; water base mud, oil base mud, and low temperature.
With the single and dual snubbing BOPs operation, time is reduced by eliminating conventional ram-to-ram snubbing. Both single and dual snubber blowout preventers have a working pressure of 5,000 and 10,000 psi. And just like the Spherical BOPs, the snubbers utilize the Shaffer 10,000 psi spherical packing element with its field proven design. This explains why there is a long life under the harsh snubbing conditions of passing tool joints and couplings through the element.
In these single and dual snubbers, maintenance is also made faster and easier. The two-piece snubbing element enables easy replacement with pipe in the well. For more assistance in rapid removal of the element, there is a hydraulically operated quick-release bonnet and an easy lift upper housing. The easy-lift upper housing further assists in rapid snubbing element removal with hydraulic cylinders integral to the BOP housing. In all, only eight minutes are needed to replace a snubbing element.
View Packing Elements and Seal Kits from World Petroleum Supply.
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