At the bottom end of the drill pipe are extra-heavy sections called drill collars, which serve to concentrate the weight on the rotating bit. In order to help maintain a vertical well bore, the drill pipe above the collars is usually kept in tension. This is applicable more on Mud rotary drilling where the equipment is bottom table drive.
GETECH EQUIPMENTS INTERNATIONAL PRIVATE LIMITED
Plot No. 200/12, Phase-II, IDA Cherlapally, HCL Post, Hyderabad, Andhra Pradesh, Hyderabad, Telangana, IndiaView Mobile No.