{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:00:25Z","timestamp":1760241625285,"version":"build-2065373602"},"reference-count":38,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2018,6,3]],"date-time":"2018-06-03T00:00:00Z","timestamp":1527984000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"The National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["No. 41704132","No. 41304111"],"award-info":[{"award-number":["No. 41704132","No. 41304111"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Opening fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Chengdu University of Technology","award":["No. PLC20180603"],"award-info":[{"award-number":["No. PLC20180603"]}]},{"name":"Program funded by China Postdoctoral Science Foundation","award":["No. 2017M623307XB"],"award-info":[{"award-number":["No. 2017M623307XB"]}]},{"name":"Key project of Science Technology Department of Sichuan Province","award":["No. 2016JY0200"],"award-info":[{"award-number":["No. 2016JY0200"]}]},{"name":"Natural Science project of Education Department of Sichuan Province","award":["No. 16ZB0101","No. 17ZA0030","No. 18CZ0008"],"award-info":[{"award-number":["No. 16ZB0101","No. 17ZA0030","No. 18CZ0008"]}]},{"name":"The Sichuan Provincial Youth Science &amp; Technology Innovative Research Group Fund","award":["No. 2016TD0023"],"award-info":[{"award-number":["No. 2016TD0023"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>According to the fact that high frequency will be abnormally attenuated when seismic signals travel across reservoirs, a new method, which is named high-precision time-frequency entropy based on synchrosqueezing generalized S-transform, is proposed for hydrocarbon reservoir detection in this paper. First, the proposed method obtains the time-frequency spectra by synchrosqueezing generalized S-transform (SSGST), which are concentrated around the real instantaneous frequency of the signals. Then, considering the characteristics and effects of noises, we give a frequency constraint condition to calculate the entropy based on time-frequency spectra. The synthetic example verifies that the entropy will be abnormally high when seismic signals have an abnormal attenuation. Besides, comparing with the GST time-frequency entropy and the original SSGST time-frequency entropy in field data, the results of the proposed method show higher precision. Moreover, the proposed method can not only accurately detect and locate hydrocarbon reservoirs, but also effectively suppress the impact of random noises.<\/jats:p>","DOI":"10.3390\/e20060428","type":"journal-article","created":{"date-parts":[[2018,6,4]],"date-time":"2018-06-04T08:52:03Z","timestamp":1528102323000},"page":"428","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["A High-Precision Time-Frequency Entropy Based on Synchrosqueezing Generalized S-Transform Applied in Reservoir Detection"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2214-0066","authenticated-orcid":false,"given":"Hui","family":"Chen","sequence":"first","affiliation":[{"name":"Geomathematics Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China"},{"name":"State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuanchun","family":"Chen","sequence":"additional","affiliation":[{"name":"Geomathematics Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shaotong","family":"Sun","sequence":"additional","affiliation":[{"name":"Geomathematics Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8856-0912","authenticated-orcid":false,"given":"Ying","family":"Hu","sequence":"additional","affiliation":[{"name":"Geomathematics Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China"},{"name":"ConocoPhillips School of Geology and Geophysics, University of Oklahoma, Norman, OK 73019, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8066-5261","authenticated-orcid":false,"given":"Jun","family":"Feng","sequence":"additional","affiliation":[{"name":"Geomathematics Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,6,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1093\/gji\/ggt530","article-title":"EMD and Teager-Kaiser energy applied to hydrocarbon detection in a carbonate reservoir","volume":"199","author":"Xue","year":"2014","journal-title":"Geophys. 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