drilling performance is fit for specification of API Spec 4F,7K,8A, Oil Rig Type and Basic Parameters of SY/T5609-1999 1. Motorized Rig: To realize the intelligent control the rigs, the rig with DC power driving adopts electric transmission of AC-SCR-DC, and the rig with AC power driving adopts electric transmission of AC-DC-AC. The driving power comes from the diesel generation group, and the ...