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Formation of inter-salt overpressure fractures and their significances to shale oil and gas: A case study of the third member of Paleogene Shahejie Formation in Dongpu sag, Bohai Bay Basin
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LIU Weibin,ZHOU Xingui,XU Xingyou,ZHANG Shiqi
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Table 3 Homogenization temperature and formation time of hydrocarbon inclusions in overpressure fractures.
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| Well No. | Depth/
m | Stage of hydrocarbon inclusions | Homogenization temperature of inclusions/°C | Formation
time/Ma | | Wen 240 | 3 820.4 | Ⅰ | 95-125 | 26.5-30.0 | | Ⅱ | 120-140 | 0-4.0 | | Wen 260 | 3 687.4 | Ⅰ | 105-125 | 27.3-29.5 | | Wen 243 | 4 183.6 | Ⅰ | 105-135 | 25.6-29.2 | | Ⅱ | 125-150 | 0-5.0 | | Wei 311 | 3 449.0 | Ⅰ | 120-135 | 25.8-26.5 | | Ⅱ | 135-145 | 0-3.0 | | Qing 65 | 3 192.6 | Ⅰ | 130-140 | 26.3-27.6 | | Ⅱ | 120-135 | 0-5.0 | | Pushen 7 | 4 158.3 | Ⅰ | 90-135 | 25.0-28.4 | | Ⅱ | 125-145 | 0-4.0 | | Pushen 4 | 3 792.6 | Ⅰ | 100-125 | 26.4-30.0 | | Ⅱ | 120-135 | 0-5.0 | | Pushen 14 | 4 178.6 | Ⅰ | 130-140 | 27.3-29.6 | | Ⅱ | 140-150 | 0-2.0 | | Pu 47 | 3 109.8 | Ⅰ | 105-120 | 25.5-28.2 | | Pu 141 | 3 456.3 | Ⅰ | 95-125 | 25.3-30.0 | | Ⅱ | 130-140 | 0-3.0 | | Hu 82 | 3 146.3 | Ⅰ | 90-115 | 25.7-28.6 | | Ⅱ | 120-135 | 0-5.0 | | Hu 83 | 2 879.6 | Ⅰ | 90-135 | 25.5-30.0 |
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