Self-travelling anchor rope-free workover rig

• Main Authors: HUO BINGXIN, BAI LIYAN, LIU JINHUA, WEI LIJUAN, LIU YANG, JIANG QUANLI, WANG YANPING
• Format: Patent
• Language: Chinese; English
• Published: 09.01.2013
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model relates to an oil field workover rig, and in particular to a self-travelling anchor rope-free workover rig which is suitable for oil field minor workover operation. The self-travelling anchor rope-free workover rig comprises an automobile chassis, wherein a winch, an upper derrick body, a lower derrick body, a derrick rear support, a derrick crown and flexible support jacks which are arranged on the front part and the rear part of the automobile chassis are arranged on the automobile chassis. A rear large leg of the lower derrick body is respectively connected with a triangular support rear large leg and the rear support through hinged fulcrums, and after the lower derrick body is erected in position, a front large leg of the lower derrick body is located on a triangular support front large leg. The bending resistance can be improved, the rigidity can be enhanced, and the stability of a derrick is increased. The elastic support jack on the rear part of the automobile chassis is distributed a