Abstract A series of experiments were performed to study the influence of initial pressures and pressure drop rates on the amount of lost gas during the coring process. The change laws of cumulative gas production and gas production rate were investigated. The proportion changes of lost gas, desorbed gas, and residual gas were analyzed. The results show that the cumulative gas production can be divided into three stages. There is a step with a relatively stable gas production rate in the gas production rate-time curve. The proportional change curves of the lost gas and desorbed gas have the same turning point.

中文翻译：

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页岩取心过程中气体耗散实验研究

摘要 进行了一系列实验，研究了初始压力和压降速率对取心过程中气体损失量的影响。研究了累计产气量和产气率的变化规律。分析了损失气、解吸气和残余气的比例变化。结果表明，累计产气量可分为三个阶段。产气速率-时间曲线中存在一个产气速率相对稳定的台阶。损失气体和解吸气体的比例变化曲线具有相同的转折点。