Expand subdrilling head with adjustable well is with novel

• Main Author: DONG CHANGWEN
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• 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 provides an expand subdrilling head with adjustable well is with novel, including the lift main part, expand end wing main part, bottom plate, center location axle and limiting mainbody, lift main part coaxial line cover is located the center location is epaxial, and the below of the main part of just should going up and down is articulated the one end of end wing main part expands, the other end that expands end wing main part articulate in the upper surface of bottom plate, vertical and the coaxial line of the lower extreme of center location axle is worn to locate on thebottom plate, and the lower extreme coaxial line of this center location axle sets up one and inserts the point, limiting main body is vertical to be worn to locate in the lift main part. The utilitymodel discloses a should expand the subdrilling head, and can satisfy the reaming demand in multiple specification well drilling aperture, shorten continuous broaching work work process, and lengthenthe whole life who expands t