{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,23]],"date-time":"2026-03-23T22:58:31Z","timestamp":1774306711478,"version":"3.50.1"},"reference-count":26,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2024,5,29]],"date-time":"2024-05-29T00:00:00Z","timestamp":1716940800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundations of China","award":["42204117"],"award-info":[{"award-number":["42204117"]}]},{"name":"National Natural Science Foundations of China","award":["12272107"],"award-info":[{"award-number":["12272107"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The streaming potential effect has a wide range of applications in geophysics. The core streaming potential experiment requires that there is no external circuit at both ends of the core, but a measurement circuit must be introduced to measure the voltage between both ends of the core which will cause an external circuit. In order to analyze the effect of measurement circuits on the streaming potential experiment, this paper proposes a core current source model, i.e., the core in the streaming potential experiment is regarded as a circuit composed of a current source whose output current is equal to the seepage current and the core resistance. By changing the resistance value of the external circuit, it is found that the seepage current is not affected by the external resistance but by the excitation pressure. Experiments on the streaming potential of 20 sandstone cores under distilled water, 0.01 mol\/L, 0.02 mol\/L, 0.05 mol\/L, 0.1 mol\/L, 0.2 mol\/L, 0.4 mol\/L, and 0.6 mol\/L sodium chloride solutions revealed that the effect of the external circuit on the streaming potential signal increased with decreasing mineralization. For distilled water-saturated sandstone cores, the effect of the external circuit was about 2%.<\/jats:p>","DOI":"10.3390\/s24113514","type":"journal-article","created":{"date-parts":[[2024,5,30]],"date-time":"2024-05-30T06:08:14Z","timestamp":1717049294000},"page":"3514","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Streaming Potential Experiment on Sandstone Core Samples Based on Current Source Model under Different Sodium Chloride Solutions"],"prefix":"10.3390","volume":"24","author":[{"given":"Chenggang","family":"Yin","sequence":"first","affiliation":[{"name":"College of Intelligent Manufacture, Taizhou University, Taizhou 317000, China"}]},{"given":"Wei","family":"Guan","sequence":"additional","affiliation":[{"name":"Department of Astronautics and Mechanics, Harbin Institute of Technology, Harbin 150001, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4302-1413","authenticated-orcid":false,"given":"Hengshan","family":"Hu","sequence":"additional","affiliation":[{"name":"Department of Astronautics and Mechanics, Harbin Institute of Technology, Harbin 150001, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1002\/elps.1150090410","article-title":"A quantitative theory of the stern electric double layer","volume":"9","author":"Michov","year":"1988","journal-title":"Electrophoresis"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"L21306","DOI":"10.1029\/2009GL040549","article-title":"Measurement of streaming potential coupling coefficient in sandstones saturated with high salinity NaCl brine","volume":"36","author":"Jaafar","year":"2009","journal-title":"Geophys. 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