Wellhead Systems
Casing heads, spools, tubing heads, hangers and seals.
- Casing heads and spools for each casing string
- Slip-type and mandrel hangers
- Primary and secondary annulus seals
Wellhead and valves
Wellhead Equipment, Gate Valves and Choke Valves
The wellhead is the permanent pressure boundary at the top of the well. It suspends the casing and tubing, seals the annuli between them and provides the connection for the BOP stack while drilling and the production tree afterwards.
Kronborr supplies wellhead systems, gate valves and choke valves, specified to the pressure, temperature and fluid conditions of your well.
The range
Wellhead and Valves: Product Families
Gate Valves
Full-bore isolation for wellheads, trees and manifolds.
- Slab and expanding gate designs
- Metal-to-metal sealing
- Manual, hydraulic or pneumatic operation
Choke Valves
Control flow rate and pressure, fixed or adjustable.
- Positive and adjustable designs
- Erosion-resistant trims
- Manual or actuated operation
Check Valves
Swing and lift check valves that stop reverse flow.
- Swing, lift and dart-style designs
- Flanged, threaded and union end connections
- Replaceable seats and seals
Wellhead Systems
A conventional wellhead is built up as drilling progresses: a casing head on the surface casing, then casing spools for each further string, and finally a tubing head. Hangers suspend each string and seal assemblies isolate the annuli.
Valves for Drilling and Production
Gate valves give full-bore isolation with minimal pressure drop and are used throughout wellheads, trees and manifolds. Choke valves control flow rate and pressure, from fixed bean chokes to fully adjustable designs.
How to Specify Wellhead Equipment
Provide the casing program, rated working pressure, temperature class, material class for the produced fluids and the product specification level your operator requires. With these, we can quote a complete wellhead or individual components that fit your existing equipment.
FAQ
Wellhead and Valves: Common Questions
What information do you need to quote a wellhead?
The casing and tubing program, rated working pressure, temperature range, fluid composition (especially CO2 and H2S), and the specification and documentation level your operator requires.
Do you supply individual valves or only complete systems?
Both. We supply complete wellhead systems and individual gate valves, choke valves and spools.
Can valves be supplied for sour service?
Valves can be specified with materials for sour service. State the expected H2S and CO2 levels in your quote request.
Tell Us What You Are Drilling
Send your well program, sizes or part numbers. We reply with a quote and a reference number.