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Geological characteristics, evaluation criteria and discovery significance of Paleogene Yingxiongling shale oil in Qaidam Basin, NW China
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LI Guoxin,ZHU Rukai,ZHANG Yongshu,CHEN Yan,CUI Jingwei,JIANG Yinghai,WU Kunyu,SHENG Jun,XIAN Chenggang,LIU He
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Table 3 Evaluation standard and parameters of Yingxiongling shale oil in Qaidam Basin
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| Sweet spot type | TOC/% | Ro/% | Effective
porosity/% | Oil
saturation/% | Brittle mineral content /% | Formation pressure coefficient | Density of lamellation/
(pieces·m-1) | Burial depth/m | | Type I | >0.8 | 1.0-1.3 | >5 | ≥40 | >50 | >2.0 | >1000 | <4000 | | Type II | 0.6-0.8 | 0.8-1.0 | 3-5 | ≥40 | 40-50 | 1.0-2.0 | 500-1000 | 4000-5000 | | Type III | 0.4-0.6 | <0.8 | <3 | <40 | <40 | <1.0 | <500 | >5 000 |
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