Title:
HOLE SEALING QUALITY MEASUREMENT DEVICE AND HOLE SEALING QUALITY EVALUATION METHOD FOR GAS EXTRACTION DRILLING
Document Type and Number:
WIPO Patent Application WO/2023/236631
Kind Code:
A1
Abstract:
A hole sealing quality measurement device for gas extraction drilling, comprising a measurement main machine (1), a measurement pipe (2), a sealing member (5) and a tee joint (4), wherein a plurality of gas inlets (104) and a plurality of exhaust ports (103) are provided in an upper portion of the measurement main machine (1); a negative pressure ejector is provided inside the measurement main machine (1); the measurement main machine (1) is further provided with a quick joint (101) and a control switch (102); the quick joint (101) is configured to be connected to an underground air duct (11); the underground air duct (11) is then connected to an underground air compression pipe (12); the control switch (102) is used to activate and deactivate the negative pressure ejector inside the measurement main machine (1); and under the action of the negative pressure ejector, the gas inlets (104) and the exhaust ports (103) on the measurement main machine (1) operate simultaneously. The present application further provides a measurement device-based method for evaluating hole sealing quality for gas extraction drilling. By means of the measurement device and the evaluation method, the problem of a measurement result deviating from the actual conditions due to the changes of a gas concentration in a drilled hole caused by the time difference is effectively prevented, the operation is simple, the accuracy is high, and the hole sealing quality during gas extraction drilling can be quantitatively evaluated.
Inventors:
SU WEIWEI (CN)
QIN YUJIN (CN)
ZHOU RUI (CN)
ZHENG ZHONGYU (CN)
LI JIE (CN)
TIAN FUCHAO (CN)
ZOU YONGMING (CN)
XU YANG (CN)
YAN XUNQIANG (CN)
SUN WEILI (CN)
MA JINKUI (CN)
QIN YUJIN (CN)
ZHOU RUI (CN)
ZHENG ZHONGYU (CN)
LI JIE (CN)
TIAN FUCHAO (CN)
ZOU YONGMING (CN)
XU YANG (CN)
YAN XUNQIANG (CN)
SUN WEILI (CN)
MA JINKUI (CN)
Application Number:
PCT/CN2023/084337
Publication Date:
December 14, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
CHINA COAL TECH & ENGINEERING GROUP SHENYANG ENGINEERING COMPANY (CN)
International Classes:
E21B47/005; E21B47/10; E21B49/08; E21F7/00; F16L11/133; G01N1/24
Foreign References:
| CN115012909A | 2022-09-06 | |||
| CN114183136A | 2022-03-15 | |||
| CN212228515U | 2020-12-25 | |||
| GB1277364A | 1972-06-14 | |||
| CN106769270A | 2017-05-31 | |||
| CN108956023A | 2018-12-07 | |||
| CN113605963A | 2021-11-05 | |||
| CN215830490U | 2022-02-15 | |||
| JP2007017206A | 2007-01-25 | |||
| JPH0665847U | 1994-09-16 | |||
| US6865933B1 | 2005-03-15 |
Other References:
HONGMIN YANG, REN FAKE, WANG ZHAOFENG, CHEN SHANWEN, PEI GUANZHEN: "Quality inspection and quantitative evaluation method for borehole sealing in gas drainage", JOURNAL OF CHINA COAL SOCIETY, vol. 44, no. Supp．1, 15 August 2019 (2019-08-15), pages 164 - 170, XP093114004
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
Download PDF:
Previous Patent: STEEL STRUCTURE FLOOR BEAM
Next Patent: DRIVING METHOD FOR DISPLAY DEVICE AND DISPLAY DEVICE
Next Patent: DRIVING METHOD FOR DISPLAY DEVICE AND DISPLAY DEVICE