Title:
METHOD FOR AUTOMATIC REPLACEMENT OF CASING AND DRILL PIPE AND DRILLING MACHINE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2018/074735
Kind Code:
A1
Abstract:
Disclosed are a method for automatically replacing a casing and a drill pipe, and a drilling machine comprising the same. The drilling machine comprises: a frame unit having at least two elongated frames which are slidably coupled to each other; a drive unit in which an elongated casing having a receiving space formed therein and a drill pipe provided on the receiving space in correspondence with the length of the casing are rotatably coupled to each other, wherein the drive unit is disposed at a central portion of the frame unit to slide in conjunction with the sliding of the frame unit; and a swivel unit including a discharge hole communicating with a space between the casing and the drill pipe and allowing sludge generated from the drilling of the ground to be discharged to the outside, wherein the swivel unit is selectively detachable depending on whether or not the drive unit is driven.
Inventors:
KIM YOUNG WON (KR)
CHO MIN JAE (KR)
CHO MIN JAE (KR)
Application Number:
PCT/KR2017/009755
Publication Date:
April 26, 2018
Filing Date:
September 06, 2017
Export Citation:
Assignee:
KOREA INST IND TECH (KR)
International Classes:
E21B3/02; E02F5/20; E21B7/02; E21B7/20; E21B7/26; E21B15/00; E21B19/16; E21B21/02
Foreign References:
| JP2014148862A | 2014-08-21 | |||
| KR101625800B1 | 2016-05-30 | |||
| JPH0651677U | 1994-07-15 | |||
| KR20120134077A | 2012-12-11 | |||
| KR200384053Y1 | 2005-05-11 |
Attorney, Agent or Firm:
KO, Young Kap (KR)
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