Title:
METHOD AND SYSTEM FOR QUANTITATIVELY ASSESSING SEALING PERFORMANCE OF SHALE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/138187
Kind Code:
A1
Abstract:
A method and system for quantitatively assessing the sealing performance of a shale system. The method comprises: assessing an early-stage sealing capability of a shale system; assessing a late-stage sealing capability of the shale system; and comprehensively assessing the sealing capability of the shale system. On the basis of an optical microscope and a high-precision field emission scanning electron microscope, quantitative statistics are compiled on the asphalt content and pore structure parameters of a shale reservoir on the basis of qualitative identification, a method for quantitatively assessing the sealing performance of a shale system is established, and the series of strata of shale are divided into four shale sealing types, i.e. early-stage sealing and late-stage sealing, early-stage sealing and late-stage opening, early-stage opening and late-stage sealing, and early-stage opening and late-stage opening, which is of great significance for the accurate assessment of shale preservation conditions and exploration potential. The evaluated sealing performance of the shale system is checked by using actually measured formation pressure and actual production data of a shale gas well, and the method is thus more scientific.
Inventors:
HAO YUXIN (CN)
XU SHANG (CN)
GOU QIYANG (CN)
XU SHANG (CN)
GOU QIYANG (CN)
Application Number:
PCT/CN2022/131402
Publication Date:
July 27, 2023
Filing Date:
November 11, 2022
Export Citation:
Assignee:
UNIV CHINA PETROLEUM EAST CHINA (CN)
International Classes:
G01N21/84; G01N23/2251
Foreign References:
| CN114544622A | 2022-05-27 | |||
| CN108387930A | 2018-08-10 | |||
| CN108845100A | 2018-11-20 | |||
| CN110132816A | 2019-08-16 | |||
| CN110987993A | 2020-04-10 | |||
| CN111366753A | 2020-07-03 | |||
| CN108152315A | 2018-06-12 | |||
| US20190331583A1 | 2019-10-31 | |||
| US20210277778A1 | 2021-09-09 |
Attorney, Agent or Firm:
WUHAN XINBOZHIHUI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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