【摘要】 通过实验定量研究了不同钻井液体系黏度的变化对气测录井过程中CO2 气体检测的影响 ,得出了钻井液黏度对CO2 气体检测的影响规律 ,确定了钻井液黏度为 60Pa·s是检测CO2 最佳黏度 .根据实验结果对由黏度变化引起的CO2 检测值的偏差建立了校正公式及CO2 气层的解释标准 ,提高了CO2 气藏评价的精度 .更多还原

【Abstract】 In the process of oil-gas exploration and logging, drilling fluid viscosity has a great effect on gas detection logging. Different drilling fluid system viscosity has different effect on distinguishing of CO₂ Gas, thus the law could be established that drilling fluid viscosity influences distinguishing of CO₂ Gas, thereby it can be concluded that drilling fluid viscosity reaches optimum detection value at 60 Pa·s. According to the experiment results, we adjust the aberration that viscosity’s changes cause the detection value of CO₂ Gas and establish CO₂ Gas interpretation standard of water-based drilling fluid, oil-based drilling fluid and format drilling fluid on the basis of it, so reliable basis for the accurate evaluation of CO₂ Gas reservoir is established.更多还原