Offshore drilling module, the mast, has three types such as “mast” type, “k” type and derrick type. The “mast” type and “K” type are equipped with raising device which improves the wind load bearing capacity of drilling boat and drilling platform module.

Offshore drilling module, the mast has gotten Hot-dip galvanizing and aluminizing treatment, and the painting is done as with offshore special paint as per offshore anti-corrosion regulations, which can reach a good anti-corrosion effect.

Main features of derrick type

High stability with wide applicable range
The cross section shape is “ bottle neck” type, namely, the lower part is square or rectangle with the part above racking board being smaller and smaller.
A large space is inside the mast and the driller can have a wide visual sight for convenient operation.
The mast height can meet the installation requirement of top drive.

Main features of “K” type

Section type: “ K ” type ， i.e. front opening.
Mast space and height both can meet the installation requirement of top drive
Under a bad weather condition, the mast can be laid down to support the stability of drilling platform or drilling boat.

Main features of “mast” type

Main use for offshore work over rig module
The mast is a forward tilted type, with guyline, extendable and bi-section matched installation one.
The main body is a rectangular truss structure, with good rigidity, light weight.

Main features of jack up mast

Jack up by hydraulic cylinder or hydraulic drawworks. The jack up process is stable and dependable

After the upper half section reaches the preset place, fix it with pins. The mast body is stable.
The mast can be laid down if there is no operation in order to save the space of drilling boat or drilling platform.

With a “ K” type, the mast space and height both can meet the installation of top drive.

Main technical parameters ：