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Title:
HYDRAULIC CUTTING DRILL BIT WITH SELF-CARRIED ABRASIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/134432
Kind Code:
A1
Abstract:
A hydraulic cutting drill bit with self-carried abrasive material, comprising a drill bit and cutting heads (20) installed around a drill bit top portion. The drill bit is composed of a drill bit outer wall (1) and a drill bit chamber body. Inside the drill bit chamber body is provided a low pressure cooling water flow system and a high pressure cutting water flow system, a high pressure water-sand mixed solution abrasive material production and addition system, and a high/low pressure water flow dividing control system. The drill bit can improve water jet flow cutting ability and cutting speed, increases energy obtained by a high pressure water jet flow, increases cutting range, and enhances directional fracturing performance in a drill hole, thereby reducing the number of drill holes in a workface and so reducing costs.

Inventors:
HUANG, Bingxiang (No. 1, Daxue Road Tongsha, Xuzhou Jiangsu 6, 221116, CN)
CHEN, Shuliang (No. 1, Daxue Road Tongsha, Xuzhou Jiangsu 6, 221116, CN)
LI, Haoze (No. 1, Daxue Road Tongsha, Xuzhou Jiangsu 6, 221116, CN)
Application Number:
CN2018/113602
Publication Date:
July 11, 2019
Filing Date:
November 02, 2018
Export Citation:
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Assignee:
CHINA UNIVERSITY OF MINING AND TECHNOLOGY (No. 1, Daxue Road Tongsha, Xuzhou Jiangsu 6, 221116, CN)
XUZHOU USURE MINING TECHNOLOGY CO., LTD (710 7th Floor Section A, University Pioneer Park No. 99 Daxue Road, Hi-Tech Distric, Xuzhou Jiangsu 6, 221116, CN)
International Classes:
E21B7/18
Foreign References:
CN108316907A2018-07-24
CN107435519A2017-12-05
CN202380976U2012-08-15
CN203499569U2014-03-26
KR20100080662A2010-07-12
US4899835A1990-02-13
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (12th FL.-B, No. 179 Zhongshan Road Gulo, Nanjing Jiangsu 5, 210005, CN)
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