Drill rod centralizer

• Main Authors: YOU WEIDONG, LIN ZONGHUI, ZHANG LIFENG
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2020
• 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 discloses a drill rod centralizer which comprises a lower supporting structure and an upper supporting structure, and the lower supporting structure is composed of a plurality of lower rolling wheels arranged on the top face of a support. The upper supporting structure comprises a plurality of upper rollers arranged at the ends of the swing rods, the middles of the swing rods rotate around the support with the support as the fulcrum, and the other ends of the swing rods are hinged to the two sides of the support through connecting rods. A lifting driving mechanism is arrangedat the bottom of the support. The connecting rod and the swing rod are driven by the lifting driving mechanism to move gradually, and the lifting driving mechanism can be suitable for drill pipes ofdifferent sizes, is suitable for drill pipes of conventional sizes, is also suitable for drill pipes of non-common or non-standard sizes, and is wide in application range; moreover, when drill rods ofdifferent specifications a