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       Address: Unit 8001, Part A, Minnan Culture Town, 

       No.350, Changle Road, Huli, Xiamen China.361006


Concentric Symmetric Casing Overburden Drilling Systems

Concentric Symmetric Casing Overburden Drilling Systems

The symmetric drilling system is designed to drill and case a hole simultaneously through unstabled ground conditions. The driver bit incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus minimising the disruption of the surronding of the drill hole.

Concentric Symmetric Casing Overburden Drilling Systems

We can manufacture both permanent Symmetric and Retrievable Symmetric system which can meet your comprehensive requirement.


The below size of Symmetric systems which are available, and the special design is upon customer’s requirement:

Symmetric 114, Symmetric 127, Symmetric 140, Symmetric 146, Symmetric 168, 

Symmetric 178, Symmetric 195, Symmetric 219, Symmetric 243, Symmetric 273.

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