casing head

Casing head

Crucial component in oil drilling

A casing head is a crucial component in oil drilling, serving as a connection between the casing and the wellhead equipment. It is typically a metal flange that is welded or screwed onto the top of the conductor pipe or casing, forming part of the wellhead system. The casing head provides the structural and pressure-containing interface necessary for drilling and production operations

Product Information

The casing head spool is an important connection between the casing and the wellhead device. It is used for the connection between each layer of casing, between the casing and the blowout preventer, and between the completion and the oil (gas) wellhead. It features a versatile straight bore design that accepts a variety of slip and mandrel casing hangers. It also has a 45° landing shoulder capable of supporting the maximum load to prevent the test plug from wedging under pressure.

The lower end of casing head spool is connected with the surface casing through threads, and the upper end is connected with the wellhead device or blowout preventer through flanges or clamps. It supports the weight of the subsequent layers of casing through the hanger, bears the weight of the blowout preventer, forms a pressure seal between the inner and outer casing, provides an outlet for releasing the pressure between the casing strings, and can implement the drilling and production process. special work.

Outlets

●Line Pipe Outlets

●Studded Side Outlets

Casing Hanger Compatibility

●C-21 and C-22 slip-type casing hangers

●l Mandrel style casing hangers

Availability

●l Additional sizes available upon request

●l Available in C-29 profile (Available upon request)

Lock screws

●l C-22-BP casing heads are supplied with two lock screws for wear bushing retention

●l C-22-L and C-29-L casing heads are supplied with a full set of lock screws for mandrel casing hanger and packoff retention (Available upon request)

Bottom Preparations

●l PE/BG bottom, for use with PE secondary seal bushing (Standard)

●l HPE bottom, for use with HPE secondary seal bushing for high pressure applications (Available upon request)

Casing Head is at the bottom of wellhead which acts as a support to the whole wellhead system, and the bottom is connected to the surface casing strings for hanging while holding casing hanger inside. Dongrui Petroleum casing head is a double 45°shoulder design that is used for all types of well completions and depth, and compatible with all DR serial Casing Spool and Casing Hanger.