公开(公告)号：US10794136B2

公开(公告)日：2020-10-06

申请号：US16495800

申请日：2019-02-28

Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yunliang Tan ,  Xuesheng Liu ,  Deyuan Fan ,  Jianguo Ning ,  Qiang Xu ,  Bangyou Jiang ,  Guangchao Zhang

IPC: E21B31/03 ,  E21B17/22 ,  E21B17/00

Abstract: A reverse rotary sprinkler drilling pipe system with anti-sticking function and its application method. This system comprises the front and rear drilling pipes which are arranged in sequence, a water spraying device, a rotary device. The rear drilling pipe is connected with an external drilling rig. The front and rear drilling pipes are respectively arranged with through holes in an inner axial direction. The water spraying device comprises a first cylinder and a connecting body, and symmetrical multiple groups of water spraying holes are arranged on the inner sidewall of the first cylinder. A limit block is arranged in the upper part of the inner sidewall. The connecting body is disposed with water conveyance hole which is connected with the through hole and the inner part of the first cylinder.