【摘要】 为提高气体钻井水平井注气量计算精度,满足欠平衡钻井施工要求,考虑气体与地层进行热交换和井壁摩擦的影响,研究了温度对气体注气量的影响规律.根据热量平衡方程,建立了气体钻井水平井的温度计算模型,修正了应用最广泛的注气量计算模型.研究表明,将修正模型计算结果与现场设计数据进行对比分析,修正模型所计算的注气量更加符合实际.更多还原

【Abstract】 To improve the injection rate calculation accuracy in gas drilling horizontal wells so as to meet the construction requirements for under-balanced drilling, this paper deals with temperature on impact of gas injection rate, considers the impact of gas and formation heat exchange and wall friction. According to the heat balance equation, reference related to literature established to temperature calculation model of horizontal wells gas drilling, with the amendment of the most widely used Guo Boyun injection volume calculation model. Correction model to calculate results and on-site design data were analyzed, the study showed that amended model is in more accordance with the actual practice.更多还原