Abstract

This paper considers the results of calculating transient pressure and temperature fields in a low-permeability reservoir with a hydraulic fracture taking into account the thermodynamic (Joule–Thomson and adiabatic) effects. The influence of fracture parameters (width and permeability) on the nature of time variation in the temperature of the fluid flowing into the well is analyzed. It is shown that as the pressure gradient in the fracture increases with decreasing fracture width and permeability, the contribution of the Joule–Thomson effect increases and, as a consequence, the temperature of the flowing fluid increases over time; as the fracture width and permeability increase, the adiabatic cooling effect begins to prevail, resulting in a decrease in the temperature of the flowing fluid. The considered features of the temperature field can be used to evaluate hydraulic fracture parameters.

中文翻译：

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含水力裂缝的低渗透油藏可压缩流体非等温过滤的数值研究

摘要

本文考虑了考虑热力学（焦耳-汤姆逊和绝热）效应的具有水力压裂的低渗透油藏中瞬态压力和温度场的计算结果。分析了裂缝参数（宽度和渗透率）对流入井中的流体温度随时间变化的性质的影响。结果表明，随着裂缝中的压力梯度随着裂缝宽度和渗透率的降低而增加，焦耳-汤姆逊效应的贡献增加，因此流动流体的温度随时间增加；随着裂缝宽度和渗透率的增加，绝热冷却效应开始发挥作用，导致流动流体的温度降低。