多因素约束的低孔渗基质砂岩气藏测试生产压差模型

邱康

Drawdown Pressure Model of Low Porosity and Permeability Matrix Sandstone Gas Reservoir Test with Multi-Factor Restrictions

QIU Kang

表1 应力敏感系数及校正决定系数

Tab.1 Stress sensitivity coefficient and correction determination coefficient

样品号 井深/m 原始渗透率/ mD 应力敏感 系数 校正决定 系数 A-1 3537.84 0.2449 0.04923 0.90632 A-2 3537.91 0.4717 0.05838 0.89795 A-3 4615.00 0.0516 0.02933 0.94241 A-4 4615.03 0.0642 0.04547 0.91553 A-5 4614.88 0.0272 0.04932 0.95618 A-6 4614.90 0.0368 0.03583 0.96683 A-7 3868.76 0.0104 0.07596 0.37192 A-8 3868.79 0.0106 0.02141 0.48270 A-9 4107.19 3.0650 0.04318 0.77655 A-10 4107.29 2.3200 0.07203 0.83605 A-11 4200.02 2.9940 0.04542 0.95029 A-12 4200.12 2.4420 0.05697 0.96357 A-13 4344.84 3.7600 0.07758 0.89382 A-14 4344.94 2.6720 0.08737 0.93239 A-15 3959.66 0.1496 0.09248 0.92553 A-16 4651.48 0.2033 0.07007 0.94654 A-17 4017.46 0.0994 0.14121 0.86962 A-18 4017.58 0.0353 0.10467 0.86083 A-19 4017.59 0.0388 0.05833 0.95138 A-20 4017.66 0.0408 0.03940 0.90013