Major diameter is with pipe shaft boring machine

• Main Authors: WANG LIFENG, WANG XINMIN, PENG GUIXIANG, SUN YANMING, ZHANG XIAO'ANG, HAO DENGFENG, XU PEIYUAN, CAO WEI, LI YAHUI, JI YUPING, ZHANG LIUBIN, LIU GUOWEI
• Format: Patent
• Language: Chinese; English
• Published: 20.03.2018
• 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 discloses a major diameter is with pipe shaft boring machine, including arranging the outer tube of locating the inner wall at the well head, top at the outer tube is equipped with wellhead flange, a serial communication port, at the middle coaxial interior sleeve pipe that is fixed with of wellhead flange, interior sheathed tube external diameter is lighter than the internal diameter of outer tube, including cover socle section portion cover be equipped with with a pipe booster mechanism, including the cover the intraductal coaxial drilling rod that is equipped with, the external diameter of drilling rod is less than the endotheca bore of pipe, be equipped with compressed air channel in the drilling rod, annular space between drilling rod and the interior sleeve pipe isturned over for the detritus and is arranged the passageway, top at the drilling rod is equipped with well head sealing device, it arranges the cinder notch to be equipped with the detritus on well head sealing device, well h