Blowout Preventer (BOP)
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This page explains how Ram Preventer is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A critical safety component within a Blowout Preventer (BOP) stack that uses hydraulically actuated rams to seal around drill pipe or completely close the wellbore to prevent uncontrolled release of formation fluids.
Technical details and manufacturing context for Ram Preventer
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Rated Working Pressure | 14–105 MPa | Standard BOP ratings; higher for special serviceAPI 16A |
| Bore Size | 179–540 mm | Matches drill pipe size and casing programAPI 16A |
| Ram Closing Time | 3–30 s | Faster for emergency; depends on hydraulic volumeAPI 16A |
| Hydraulic Operating Pressure | 10.5–21 MPa | Typical control system pressureAPI 16D |
| Temperature Rating | -29–121 °C | Low temp requires special elastomersAPI 16A |
| Sealing Element Hardness | 70–90 Shore A | Softer for low pressure, harder for high pressureASTM D2240 |
| Ram Body Material Yield Strength | 620–830 MPa | High strength for pressure retentionASTM A320 |
| Weight | 1000–15000 kg | Depends on size and pressure rating |
| Flange Connection Size | 179–540 mm | Matches BOP stack flangesAPI 6A |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 15,000 psi (103.4 MPa) working pressure |
| flow rate: | Not applicable (static sealing component) |
| temperature: | -20°C to 121°C (-4°F to 250°F) |
| slurry concentration: | Designed for drilling muds with solids up to 20% by volume |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
Manufacturer profiles associated with Ram Preventer.
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The Ram Preventer is a safety valve in a Blowout Preventer (BOP) stack. It uses hydraulically actuated rams to seal around drill pipe (pipe rams) or completely close the wellbore (blind or shear rams) to prevent uncontrolled release of formation fluids during drilling operations.
According to API 16A, the rated working pressure ranges from 14 to 105 MPa, and the temperature rating is from -29 to 121 °C. These are reference ranges; actual values depend on the specific model and application, so verify with the manufacturer.
A shear ram uses hardened steel blades to cut through the drill pipe, then seals the wellbore. This is used in emergencies when the pipe must be severed to achieve a complete closure. The sealing is achieved by elastomeric packers on the ram faces.
Key standards include API 16A for the preventer itself, API 16D for control systems, API 6A for flange connections, and ASTM D2240 for hardness. These standards provide verification references, but compliance must be confirmed with the manufacturer.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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