ZJ90/6750DBC rig is a new type AC variable frequency rig, this rig can vertical rig up the mast. Its mast and substructure has obtained the national invention patent. The basic rig’s parameters comply with national and industrial standards, relevant API specifications, and relevant HSE requirements.

R&D purpose: researching and developing a new generation of products to eliminate the K-type mast (narrow top and wide bottom) that rig up by horizontal rotary lifting method . At the same width level,such vertical rigging up K-type mast is more suitable to the integration design of automatic rigs, and change the design path of automatic rigs that equipmented various machine hand on the conventional rig to replace human operation.