Casing Head

Product Description

Casing-head housings are attached to the upper end of the surface casing.  It is designed to accept hanging and packing mechanisms that suspend and seal casing strings.

The casing head is a kind of part connecting casings and wellheads. It provides a transition joint for the tubing head.Christmas tree and other wellheads.Both top and bottom connections are API 6A flanged, and the flanges are provided with locking bolts.  Casing Heads have a straight bore bowl with 45 C landing shoulder design which avoids damage to sealing areas by drilling tools and prevents test plug and bowl protector wedging problems when pressure is applied.  Casing Heads are normally furnished with threaded outlets and studded outlets are available upon request. Bottom connections can be furnished threaded or slip-on for welding.

Casing head and casing spool use standard design, and can apply to all kinds of slip and mandrel type casing hanger.

Straight-bore Design

45shoulder design with high load capacity

Side Outlet Connection Form

Pipeline thread side outlet Threaded flange side outlet, design with VR plug

Secondary Seal

Design with multi-structure secondary seals at bottom. Installation can be performed on

spot per different structure ty pes, injection or non-injection can achieve seal.

Interchangeability of Casing Hanger

Casing hanger design with standard profile Interchangeability between slip casing

hanger and mandrel type casing hanger

Connection Forms between Casing Head and Surface Casing

Threaded bottom type, Welded bottom type, Slip bottom type.

Connection Types Between Casing Head and Surface Casing:

Slip Bottom connection

Tighten locking blot to slip clamp surface casing, design with BT type casing seal ring. The connection is firm and the seal is reliable.

Threaded bottom connection

Manufacture all kinds of casing thread, connect surface casing through pup joint.

Welded Bottom connection

Weld casing head and surface casing on spot, apply to all specifications of casing.

Technical Specifications:

Working Pressure: 2000Psi--15000Psi

Nominal Bore: 11''--13 5/8''

Working temperature: 46℃-121℃ (Class LU)

Material class: AA、BB、CC、DD、EE、FF、HH

Specification level: PSL1-4

Performance Requirement: PR1-2

End connectors: Flange or Studded