This article addresses drill-floor manifolds used for high-pressure drilling-fluid routing and line isolation. Selection must be based on the actual rig-floor layout, pressure rating, nominal bore, end connection, service environment, material/seal requirements and inspection documents—not on the catalogue name alone.
The drill floor manifold is suitable for high-pressure fluid-operation systems on oil and gas drilling platforms and can be used according to drill-floor line layout and operating requirements. Working pressure ranges from 5,000 psi (35 MPa) to 15,000 psi, nominal bore is 2″ to 3″, and the stated operating-temperature range is -29 °C to 121 °C, subject to the documented material and seal configuration.
Standard- and sour-service configurations may be specified. For sour service, provide the H2S partial pressure, pH, chloride concentration and temperature so wetted metallic materials can be selected for the stated environment in accordance with NACE MR0175/ISO 15156.
In field layouts, the first question is where the component sits in the pressure path and what equipment it must connect to. The answer affects connection direction, pressure class, access for operation and future maintenance.
Key points to confirm
For Drill Floor Manifold, we normally recommend confirming the following items before quotation, production or replacement.
- Applicable project/manufacturer specification and any component- or interface-specific API requirements; do not infer complete-manifold API Spec 16C status from the catalogue name.
- Working pressure, test pressure, nominal size and bore requirement.
- End connection type, mating equipment, flow direction and installation space.
- Service condition: standard, low-temperature or sour service; for sour service, provide the environmental limits needed for NACE MR0175/ISO 15156 material selection.
- Required documents such as MTC, pressure test report, NDT report and third-party inspection.
Field use and inspection
Drill Floor Manifold should be checked as part of the complete high-pressure system. Sealing surfaces must be protected, connections should be clean before make-up, and the product should not be forced into alignment by side load, hammering or pulling. If leakage, abnormal operation or pressure-test instability occurs, the model, pressure, medium, photos and test conditions should be recorded for technical review.
Information for quotation
For new projects, please provide the line layout, operating pressure, medium, temperature, connection standard and document requirements. For replacement work, old-part photos, nameplate or body markings, end-connection close-ups and installation position help us confirm the correct Drill Floor Manifold quickly.