【摘要】 研究了注水井将大量温度较低的地面水注入高温油藏使地层的地温度场发生变化。据此,分析了这些变化导致的热应力引起的附近应力对注水井井壁开裂条件的影响,并建立了常注水量条件下注水井的井壁开裂准则。研究结果表明:热诱导应力必须加以考虑;在给定的一组数据下,由于热效应开裂应力可减少16%。更多还原

【Abstract】 When a cool fluid such as water is injected into a hot reservoir,a growing region of cooled rock is established around the injection well.The results in change of in-situ temperature field and the influences of induced stress due to thermal stress field on the initial fracture condition are analyzed.The achieved results show that the thermal induction stress should be considered.The example illustrates that the initial stress due to the effect of thermal induced stress can be decreased about 16%.更多还原