Hydraulic jetting multi-nozzle radial drilling device

The utility model relates to the technical field of well drilling downhole tools, discloses a hydraulic jetting multi-nozzle radial drilling device and aims at solving the problems in the prior art that a radial drillhole is short in horizontal length and small in diameter due to the fact that tract...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: PENG ZHONG, SHI WEICAI, LIU ZILONG, QIAN GUOQUAN, CHU MINGLAI, CHEN GUANGCHAO
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The utility model relates to the technical field of well drilling downhole tools, discloses a hydraulic jetting multi-nozzle radial drilling device and aims at solving the problems in the prior art that a radial drillhole is short in horizontal length and small in diameter due to the fact that tractive force of a front-end jet nozzle is limited. The hydraulic jetting multi-nozzle radial drilling device comprises a sleeve, and a steering device is arranged in the sleeve. The upper end of the steering device is connected with a first oil pipe through an x-over joint. A coiled tubing is arranged in the first oil pipe. A guiding channel is arranged in the steering device. A high-pressure jet hose which is communicated with the top and the sidewall of the steering device is arranged in the guiding channel. The starting end of the high-pressure jet hose is connected with the lower end of the coiled tubing. The tail end of the high-pressure jet hose is connected with the front-end jet nozzle. At least two middle noz