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Microscale comprehensive evaluation of continental shale oil recoverability
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JIN Xu,LI Guoxin,MENG Siwei,WANG Xiaoqi,LIU Chang,TAO Jiaping,LIU He
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Table 4 Comparative analysis of availability of shale oil in the four regions.
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Sampling
strata | Availability of reservoir | | Oil saturation
of reservoir | | Mobility of crude oil | | Plasticity of reservoir | Effective porosity/
% | Proportion of
volume of pore more
than 20 nm/% | S1+S2/
(mg?g-1) | TOC/
% | Proportion
of movable oil/% | Strata pressure coefficient | Gas-oil ratio/
(m3?t-1) | Viscosity of crude oil/ (mPa?s) | Box-counting dimension | | Lucaogou Formation | 0.8-3.7 | 77-94 | | 15.3-52.3 | 1.1-9.5 | | 5-30 | 1.1-1.3 | 10-20 | 50-120 | | 2.553-2.648 | Submember 3 of the 7th
member of Yanchang
Formation | 0.4-1.8 | 75-96 | | 6.3-28.9 | 2.0-7.6 | | 15-30 | 0.7-1.0 | 60-120 | 5-20 | | 2.514-2.623 | The 2nd member of
Kongdian Formation | 0.5-2.6 | 83-97 | | 16.1-78.7 | 2.3-8.8 | | 2-10 | 1.0-1.8 | 50-130 | 10-100 | | 2.549-2.721 | The 1st member of
Qingshankou
Formation | 0.3-1.4 | 60-86 | | 8.0-22.9 | 1.7-4.5 | | 20-25 | 1.0-1.5 | 50-100 | 10-200 | | 2.377-2.492 |
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