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Title:
REVERSE ROTATION WATER SPRAY-TYPE ANTI-STICKING DRILL PIPE SYSTEM AND USAGE METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/170033
Kind Code:
A1
Abstract:
A reverse rotation water spray-type anti-sticking drill pipe system and a usage method therefor, said system comprising a front drill pipe (1), a water spray apparatus (2), a rotation apparatus (3) and a rear drill pipe (4) which are arranged sequentially. The front drill pipe (1) and the rear drill pipe (4) are internally provided with a through hole (5) on the axial direction. The water spray apparatus (2) comprises a first cylinder body (21) and a connecting body (22) which are interconnected, a side wall of the first cylinder body (21) is provided with multiple sets of water spray holes (23), limiting stoppers (24) are arranged at the top of the side wall of the first cylinder body (21), the connecting body (22) is fixedly connected to the front drill pipe (1), the connecting body (22) is also provided with a penetrating water transmission hole (25), and the water transmission hole (25) is connected to the through hole (5) and to the inside of the first cylinder body (21). The rotation apparatus (3) comprises a second cylinder body (31) and annular partition plates (32) which are interconnected, the second cylinder body (31) is fixedly connected to the rear drill pipe (4), free ends of the annular partition plates (32) extend to the inside of the first cylinder body (21) and are rotatably connected to the first cylinder body (21), and the annular partition plates (32) are also provided with openings. The system prevents sticking, and also has the advantages of being convenient to operate, and having a rapid retraction speed and a high drilling operation efficiency.

Inventors:
TAN, Yunliang (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
LIU, Xuesheng (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
FAN, Deyuan (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
NING, Jianguo (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
XU, Qiang (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
JIANG, Bangyou (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
ZHANG, Guangchao (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
Application Number:
CN2019/076559
Publication Date:
September 12, 2019
Filing Date:
February 28, 2019
Export Citation:
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Assignee:
SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (No.579 Qian Wan Road, Huangdao DistrictQingdao, Shandong 0, 266590, CN)
International Classes:
E21B17/00
Attorney, Agent or Firm:
JINAN JINDI INTELLECTUAL PROPERTY AGENCY CO., LTD (Room 410, Block AShanda Luneng Technology Building,No. 29 Shanda South Road, Licheng Distric, Jinan Shandong 9, 250199, CN)
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