Title:
HYDRAULIC DEFLECTION DIRECTIONAL DRILLING APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2022/247043
Kind Code:
A1
Abstract:
A hydraulic deflection directional drilling apparatus. The apparatus comprises a hydraulic deflection directional drilling tool (1), an elastic drilling pipe (2), a pushing assembly (3), and a high-pressure water injection pump (5); the elastic drilling pipe (2) is threadedly connected to the hydraulic deflection directional drilling tool (1); the hydraulic deflection directional drilling tool (1) comprises a water jet nozzle (11) and an auxiliary deflection assembly (12); the pushing assembly (3) is connected to the elastic drilling pipe (2); the pushing assembly (3) is a pipe-type pushing assembly or a hydraulic-type pushing assembly; the pushing assembly (3) is further connected to the high-pressure water injection pump (5) by means of a high-pressure hose; the high-pressure water injection pump (5) injects water into the hydraulic deflection directional drilling tool (1). The present invention further provides a drilling method of the hydraulic deflection directional drilling apparatus. The present invention is mainly used for hydraulic deflection directional drilling of underground coal seam, has the advantages of large rotation radius, small propelling resistance, simple process, and low cost compared with a radial rotation hydraulic jet drilling technology, and has the advantages of small rotation radius, simple process, and low cost compared with a horizontal well directional drilling technology.
Inventors:
XU CHENG (CN)
QIU HAISHENG (CN)
CAO YAOLIN (CN)
ZHAO HONGRUI (CN)
WANG BEI (CN)
YAN BINYI (CN)
DU BIN (CN)
WANG YUKUN (CN)
GUO HUAIGUANG (CN)
NI XING (CN)
LIAO WEI (CN)
QIU HAISHENG (CN)
CAO YAOLIN (CN)
ZHAO HONGRUI (CN)
WANG BEI (CN)
YAN BINYI (CN)
DU BIN (CN)
WANG YUKUN (CN)
GUO HUAIGUANG (CN)
NI XING (CN)
LIAO WEI (CN)
Application Number:
PCT/CN2021/116176
Publication Date:
December 01, 2022
Filing Date:
September 02, 2021
Export Citation:
Assignee:
CCTEG SHENYANG RES INST (CN)
International Classes:
E21B7/06; E21B7/04
Foreign References:
| CN113266281A | 2021-08-17 | |||
| CN109083594A | 2018-12-25 | |||
| CN111810086A | 2020-10-23 | |||
| CN111173555A | 2020-05-19 | |||
| DE102014201420A1 | 2015-07-30 |
Attorney, Agent or Firm:
SHENYANG YITONG PATENT FIRM (CN)
Download PDF: