Description of casing tube:

This kind of casing tube is able to stabilize the borehole during the drilling process. It has two different functions:
1): it can help to prevent the well walls from collapsing, as well as to control the formation fluids.
2): it enables both well control equipment and down hole equipment to more easily achieve their functions

Besides, it suits a wide variety of well diameters as well as different material grades, it is resistant to chemical erosion, and it can withstand various external forces, like collision, bursting, tensile strength, etc.

Note:

1): during the operation process, workers need to check whether there are any damages at the thread connection point of the casing tubes, if there are damages, please replace it immediately to avoid tripping when using this casing tube
2): suitable casing tube is always required, which can prevent it from being hit or friction
3): when connecting the casing tubes, thread oil is quite necessary