Downhole drilling tool pushing device

The downhole drilling tool pushing device comprises a tool outer barrel, a worm shaft is arranged in the tool outer barrel, and a worm shaft center hole is formed in the worm shaft; rolling wheel structures which are symmetrically arranged in the radial direction are arranged on the side wall of the...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ZHANG JINGTIAN, WANG GUOWEI, ZHANG LIGANG, WANG ZHENGXU, QU XIANWEI, CAI XIAO, LIANG LEI, GUO QINGFENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The downhole drilling tool pushing device comprises a tool outer barrel, a worm shaft is arranged in the tool outer barrel, and a worm shaft center hole is formed in the worm shaft; rolling wheel structures which are symmetrically arranged in the radial direction are arranged on the side wall of the tool outer barrel, each rolling wheel structure comprises a rolling wheel capable of being meshed with a worm shaft, the outer wall of each rolling wheel can abut against the well wall in a contact mode, and the worm shafts drive the rolling wheels to rotate so that the rolling wheels can interact with the well wall to generate forward thrust; at least one pair of advancing wheel structures which are symmetrically arranged in the radial direction is arranged on the side wall of the tool outer barrel, each advancing wheel structure comprises an advancing wheel capable of making contact with the well wall, and the appearance of each advancing wheel is arranged in a parabola shape so that the friction resistance coef