论文部分内容阅读
以沁水盆南部樊庄区块为例,通过系统采集煤层气样,对不同时间煤层气井产出煤层气的组分和甲烷稳定碳氢同位素测定,通过图件分析了煤层气生产监测区群井排采条件下煤层气产出组分及甲烷稳定碳、氢同位素对井间干扰形成的响应特征。研究表明,生产监测区煤层气组分分馏和甲烷稳定碳氢同位素分馏呈现波动性变化的特征,甲烷稳定碳氢同位素分馏程度的强弱受井间干扰程度影响,煤层气井气源来源不稳定与煤层气生产区没有形成稳定的区域流场及井间干扰程度较弱有关。甲烷稳定碳氢同位素分馏机理模式表明甲烷稳定氢同位素分馏滞后于甲烷稳定碳同位素,甲烷稳定碳同位素随时间分馏对井间干扰的响应程度更敏感。
Taking the Fanzhuang block in the south of Qinshui basin as an example, through the systematic collection of coal bed gas samples, the components of coalbed methane produced by coalbed methane wells and the stable hydrocarbon isotopes of methane were measured. Through the map, the coalbed methane production monitoring area group RESPONSE CHARACTERISTICS OF OUTPUT COMPONENTS AND METALLIC STABLE CARBON AND HYDROGEN ISOTOPIC COMPONENTS OF COALBED METHANE TO INTER-CORRELATION ISSUES UNDER WELL PRODUCTION. The results show that the compositional fractionation of methane and the stable hydrocarbon isotope fractionation of methane show the characteristics of volatility. The strength of the stable fractionation of methane is affected by the degree of inter-well disturbance. The source of gas source is unstable and CBM production area does not form a stable regional flow field and the degree of interwell interference is weak. Methane stable hydrocarbon isotope fractionation mechanism models indicate that methane stable hydrogen isotope fractionation lags behind methane stable carbon isotopes and methane stable carbon isotope fractionation over time is more sensitive to crosstalk interference.