What is a liner hanger

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We know the liner hanger is a very important part tools in oilfield drilling.But What is a liner hanger? What is the function of liner hanger?How many types of liner hangers?We, as a liner hanger manufacturer and supplier,let us introduce more knowledge about liner hanger.

First, what is a Liner Hanger?

Liner Hanger is similar to casing, is a tool/system that is used to hang a liner in a production well.But it is not run through the full depth of the well, as casing is, A liner hanger allows the liner (casing below the liner hanger) to be suspended in the previous casing string to reduce material cost and provide completion solution options. A seal is required at the top of the liner hanger to prevent transfer of fluid or pressures from either direction.

Liner Hanger belongs to Cementing or Drlling?

Cementing itself is a process in the drilling process.
The liner hanger is a cementing tool used in the cementing process.Many layers of casing are dropped during the drilling process.

The liner is a type of casing. 

The liner hanger pipe is generally used as the production casing at the bottom. 
The connection between the hanger pipe and the upper casing depends on the tail pipe hanger. 

After the casing or sieve pipe is installed, cement injection is required to complete the cementing.

Liner hanger systems could be mechanical or hydraulic, premium or standard, rotating or non-rotating, conventional or expandable and pocket slip.


Second,What is the usage of a Liner Hanger?

The purpose of the liner hanger, aside from the structural well construction purpose already answered, is to isolate flow up inside of the liner rather than the annular space which would contribute in the event no liner hanger were set.Liners are used to save on metal costs, as since the pipe does not run to the top, and sometimes on cementing costs (some liners are not cemented). As the name suggests, you use liner hangers to fix liners in place. The feature that distinguishes a liner from a regular casing column is that it starts not at the top of the well, but at some point below ground (usually deeper than 1000m). The pipe at the bottom of the left scheme and the hanger is schematically shown as two crossed squares.


Third,why do we use Liner Hanger?

Key reasons of using liners hangers are:

  1. Open hole is cased off faster
  2. Less weight for a wellhead
  3. Better cementing
  4. Rig capacity
  5. Cost advantage over a full casing string

Forth,The types of liner hanger:

General Speaking,3 kinds of liner hangers are widely used in oil and gas well.The mechanical liner hanger and hydraulic liner hanger and Expandable liner hangers.

What is the basic different of liner hanger types?

Mechanical liner hanger Hydraulic liner hangerExpandable liner hanger
a system of using in vertical onshore wells. Its mechanical mechanism is actuated by rotation of the drill pipe. The liner is set when it is attached to the cone of the well.
a mostly system of using in offshore wells, horizontal, deep and HP/HT onshore wells. A hydraulic liner hanger is a heavy duty system and allows simultaneous lining and cementing operation. These systems are attached to the well cones by the forces of hydraulic pressure.a premium system and widely applied when long liners are run and hung, as well as to provide a better cementing job when required.

Fifth,The liner hanger manufacturer and supplier

We,JC Petro, are liner hanger manufacture and factory with API 5CT certificate. The size from 4 1/2″ to 13 5/8″,from mechanical liner hanger to hydraulic liner hanger.We have exported our liner hanger to Russia,UAE,Colombia etc 12 countries. With good after sales services,we have got high reputation from our clients.

If you have any technical questions or price request,welcome contact us. We will provide more details for you. If you have order,you can contact our sales man for price details.

If you have inquiry of liner hanger or liner hanger system,send us specifications,let’s check it and reply soonest!