DRILL PIPE RAISING/LOWERING TOOL

WIPO Patent Application WO/2018/090349

A1

The invention relates to the technical field of well drilling tools. Provided is a drill pipe raising/lowering tool comprising a handle (1). A lower end of the handle (1) is vertically welded to a corner portion of a skid (2). The skid (2) has a rectangular shape. A semicicular opening is arranged at one lengthwise side of the skid (2) and positioned close to the handle (1). The semicicular opening has a radius fitting a radius of a drill pipe (4). A distance between a bottom portion of the semicicular opening and the other lengthwise side of the skid (2) ranges from 60 mm to 120 mm. The handle (1) has a diameter of 25 mm. The radius of the semicicular opening ranges from 90 mm to 145 mm. The skid (2) has a thickness ranging from 20 mm to 30 mm. The drill pipe raising/lowering tool enables the drill pipe (4) to be lifted from the ground conveniently, thereby facilitating thread connection between a female thread at an end portion of the drill pipe (4) and a connector.

JP3468700	MATERIAL FOR DRILLING HOLE IN NATURAL GROUND AND DRAINING METHOD USING THE SAME
WO/1992/004525	PIPE SYSTEM WITH ELECTRICAL CONDUCTORS
JP3086592	INDUSTRIAL APPLICABILITY: Attitude control device for excavating a pile building hole excavator

WU PING (CN)

PCT/CN2016/106491

May 24, 2018

November 19, 2016

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WU PING (CN)

E21B17/00; E21B19/14

CN104234646A	2014-12-24
CN104141461A	2014-11-12
CN205349256U	2016-06-29
CN104405309A	2015-03-11
CN201554395U	2010-08-18
CN203374214U	2014-01-01
US4059164A	1977-11-22
CN102016222A	2011-04-13

NANJING SUKE PATENT AGENT CO., LTD. (CN)

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