J55钢在模拟CO2 注入井环空环境中的关键性腐蚀因素
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崔怀云, 刘智勇, 卢琳
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Critical Corrosion Factors for J55 Tubing Steel in a Simulated Annulus Environment of CO2 Injection Well
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CUI Huaiyun, LIU Zhiyong, LU Lin
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表3 修正后的平衡常数计算参数[23]
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Table 3 Modified calculation parameters for equilibrium constant[23]
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| Parameters | / 101 mol·L-1·MPa-1 | / mol·L-1 | / mol·L-1 | /(mol·L-1)2 | ρw / g·cm-3 |
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| a1 | 2.0302 | -7.8294 | -15.707 | -4.098 | 1.8105 × 10-3 | | a2 | -2.3508 × 10-2 | 8.2473 × 10-3 | 3.0972 × 10-2 | -3245.2 | 138.08 | | a3 | 2.6144 × 10-5 | -1.0530 × 10-5 | -4.3124 × 10-5 | 2.2362 × 104 | - | | a4 | - | 4.4527 × 10-4 | 3.8058 × 10-4 | -3.9840 × 107 | - | | a5 | - | 0.4772 | 1.166 | 13.957 | - | | a6 | - | -0.118 | -0.3466 | -1262.3 | - | | a7 | - | - | - | 8.5641 × 105 | - |
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