Top Drive Descriptions: |
Top drive adopts AC motors and is driven by VFD system. |
Models and Specifications |
The top drive system is a high-tech content products, which integrates mechanical, electrical hydraulic, and communications integration, and was used to replace traditional rotary table-kelly stem drilling module. The top drive system is one of three modern scientific and technological achievements. The power of top drive system generates from swivel instead of rotary table, driving the drilling tools directly from top. The rotary table and kelly stem is not necessary any more. The top drive system is able to complete the drilling using stands. In the case of pipe jamming during trip in and trip out, the top drive system can make up drilling pipe at any height of mast, and reverse reaming, rotate drilling pipe, circulate mud etc to pass through jamming point to prevent from accidents. Comparing with normal drilling methods, top drive system has incomparable advantages. It has been used for some high challenge and complex wells, such as exploration well, direction well, horizontal well, ERD well, etc, which has been proved to be of great economical interests
