Title:
COMPREHENSIVE GEOPHYSICAL EXPLORATION SYSTEM FOR HIGH-TEMPERATURE GEOTHERMAL FIELD, AND GEOTHERMAL SWEET SPOT AREA EVALUATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/045245
Kind Code:
A1
Abstract:
A comprehensive geophysical exploration system for a high-temperature geothermal field, and a geothermal sweet spot area evaluation method. A large-area infrared remote sensing measurement and a radioactive measurement are performed, and three-component seismic longitudinal wave and seismic transverse wave data collection, ground three-dimensional broadband magnetotelluric data collection, and ground high-density three-dimensional gravity data collection are performed in a high-surface-temperature and high-radioactivity area. Geophysical parameters that are highly sensitive to a high-temperature geothermal field are searched by using well logging and DAS-VSP data during well drilling in an exploration area of a high-temperature geothermal field; longitudinal wave velocity fields, transverse wave velocity fields, longitudinal and transverse wave velocity ratios, Poisson ratios, resistivity, and density data volumes of underground three-dimensional spaces at the same depth position are compared and calibrated, a geothermal sweet spot area with a high temperature, fault fracture development and a rich underground water source supply is delineated according to the selected geophysical parameters that are highly sensitive to the high-temperature geothermal field, and detailed investigation and comprehensive evaluation are performed on the predicted geothermal sweet spot area, such that a high-temperature geothermal field is quickly and efficiently explored and found at a low cost.
Inventors:
GOU LIANG (CN)
YU GANG (CN)
WANG XIMING (CN)
XIA SHUJUN (CN)
AN SHUJIE (CN)
SONG XILIN (CN)
LIU XUEJUN (CN)
XIAO MENGXIONG (CN)
YU GANG (CN)
WANG XIMING (CN)
XIA SHUJUN (CN)
AN SHUJIE (CN)
SONG XILIN (CN)
LIU XUEJUN (CN)
XIAO MENGXIONG (CN)
Application Number:
PCT/CN2022/077872
Publication Date:
March 30, 2023
Filing Date:
February 25, 2022
Export Citation:
Assignee:
BGP INC CHINA NAT PET CORP (CN)
OPTICAL SCIENCE AND TECH CHENGDU LTD (CN)
OPTICAL SCIENCE AND TECH CHENGDU LTD (CN)
International Classes:
E21B47/135; E21B47/00; E21B49/00; G01V9/00
Foreign References:
| CN113775330A | 2021-12-10 | |||
| CN106199733A | 2016-12-07 | |||
| CN104123558A | 2014-10-29 | |||
| CN102012525A | 2011-04-13 | |||
| CN104375191A | 2015-02-25 | |||
| JPH11326538A | 1999-11-26 |
Attorney, Agent or Firm:
CHENGDU FANGYU UNION PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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