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Influences of lithology on in-situ stress field in low permeability reservoirs in Bonan Oilfield, Bohai Bay Basin, China
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LI Zhipeng,LIU Xiantai,YANG Yong,BU Lixia
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Table 2 Comparison of measured and simulated horizontal maximum principal stresses in Area 5, Bonan Oilfield.
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| Well | Measured max horizontal
principal stress direction | Simulated max horizontal principal stress direction | Absolute error | Measured max horizontal principal stress value | Simulated max horizontal principal stress value | Relative error | | Y5-10-25 | 65.0 | 69 | -4.0 | | | | | Y5-10-X22 | 69.6 | 70 | -0.4 | | | | | Y5-11-X10 | 72.9 | 65 | 7.9 | | | | | Y5-12-6 | 115.0 | 109 | 6.0 | | | | | Y5-19 | 115.0 | 120 | -5.0 | | | | | Y5-2-5 | 130.0 | 120 | 10.0 | | | | | Y5-3-01 | 130.0 | 123 | 7.0 | 63.4 | 60.50 | -4.6 | | Y5-31 | 135.0 | 126 | 9.0 | | | | | Y5-4-6 | 120.0 | 127 | -7.0 | 65.5 | 67.19 | 2.6 | | Y5-8-11 | 62.3 | 68 | -5.7 | | | | | Y5-9-X11 | 86.4 | 85 | 1.4 | 63.3 | 59.00 | -6.8 | | Y5-J1 | 117.5 | 119 | -1.5 | 60.3 | 64.30 | 6.6 | | Y5-S1 | 130.0 | 121 | 9.0 | | | | | Y65-1 | 113.7 | 120 | -6.3 | 60.7 | 63.10 | 4.0 | | Y65-4-2 | 125.0 | 133 | -8.0 | | | | | Y65-7 | 120.0 | 121 | -1.0 | | | | | Y65-XG5 | 68.0 | 73 | -5.0 | | | |
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