准噶尔盆地芦草沟组致密油系统油源对比与成藏非均质性研究
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王俞策,曹剑,陶柯宇,李二庭,向宝力,施春华
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Oil⁃source correlation and accumulation heterogeneity of tight oils in the Middle Permian Lucaogou Formation, Junggar Basin
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Yuce Wang,Jian Cao,Keyu Tao,Erting Li,Baoli Xiang,Chunhua Shi
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表1 芦草沟组烃源岩基础及同位素地球化学特征
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Table 1 Basic geochemistry and isotope data of Ji 174 well
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地球化学特征 | 范围 | 芦草沟组 (98个) | 上甜点体 (35个) | 中部泥岩段上段(25个) | 中部泥岩段下段(16个) | 下甜点体 (22个) |
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TOC (%) | Min | 0.27 | 0.27 | 0.43 | 0.36 | 0.35 | Max | 13.9 | 13.9 | 12.31 | 7.93 | 8.42 | Ave | 3.64 | 4.36 | 3.19 | 2.7 | 3.86 | PG=S1+S2 (mg HC·g-1 Rock) | Min | 0.15 | 0.15 | 0.82 | 0.74 | 0.48 | Max | 176.65 | 176.65 | 49.71 | 45.83 | 49.63 | Ave | 18.32 | 27.64 | 14.38 | 9.31 | 16.63 | Tmax (℃) | Min | 436 | 439 | 443 | 438 | 436 | Max | 455 | 454 | 455 | 450 | 452 | Ave | 447.31 | 447.27 | 450.04 | 446 | 445.23 | HI (mg HC·g-1 TOC) | Min | 35.9 | 35.9 | 71.95 | 89.47 | 85.45 | Max | 1417.07 | 1417.07 | 798.51 | 563.18 | 568.76 | Ave | 334.32 | 389.17 | 373.76 | 232.59 | 288.69 | Ro (%) | Min | 0.78 | 0.78 | 0.79 | 0.86 | 0.86 | Max | 0.95 | 0.88 | 0.88 | 0.91 | 0.95 | Ave | 0.87 | 0.84 | 0.85 | 0.89 | 0.90 | 碳同位素 (‰) | Min | -34.04 | -33.69 | -34.04 | -31.76 | -31.19 | Max | -29.28 | -30.54 | -29.28 | -30.42 | -30.17 | Ave | -31.55 | -31.55 | -32.56 | -31.13 | -30.69 |
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