Invention Grant
- Patent Title: Reverse rotary sprinkler drilling pipe system with anti-sticking function and its application method
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Application No.: US16495800Application Date: 2019-02-28
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Publication No.: US10794136B2Publication Date: 2020-10-06
- Inventor: Yunliang Tan , Xuesheng Liu , Deyuan Fan , Jianguo Ning , Qiang Xu , Bangyou Jiang , Guangchao Zhang
- Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Applicant Address: CN Qingdao
- Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Current Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Current Assignee Address: CN Qingdao
- Agency: CBM Patent Consulting, LLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@65a415d6
- International Application: PCT/CN2019/076559 WO 20190228
- International Announcement: WO2019/170033 WO 20190912
- Main IPC: E21B31/03
- 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.
Public/Granted literature
- US20200024925A1 A Reverse Rotary Sprinkler Drilling Pipe System with Anti-sticking Function and Its Application Method Public/Granted day:2020-01-23
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