AUTHOR=Chen Yanan , Wang Haibo , Li Fengxia , Zhou Tong TITLE=Research Advance on the Diagnosis Technology of Hydraulic Fractures in Shale Reservoirs JOURNAL=Frontiers in Energy Research VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.919917 DOI=10.3389/fenrg.2022.919917 ISSN=2296-598X