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US09580967B2 Increasing formation strength through the use of temperature and temperature coupled particulate to increase near borehole hoop stress and fracture gradients 有权
通过使用温度和温度耦合的颗粒来增加地层强度，以增加近井眼环压应力和断裂梯度

Increasing formation strength through the use of temperature and temperature coupled particulate to increase near borehole hoop stress and fracture gradients
Abstract:
A method of increasing near-wellbore rock strength so as to mitigate or remediate lost circulation events through increased hoop stress in the near-wellbore in a subsurface formation comprises a) cooling a near-wellbore region of the formation, b) allowing a lost circulation material to enter the cooled near-wellbore region; and c) heating the near-wellbore region.
Abstract(Chinese):

增加近井眼岩石强度的方法，以便通过在地下地层中的近井筒中增加环向应力减轻或补救流失事件，包括：a）冷却地层的近井筒区域，b）允许流失 材料进入冷却的近井眼区域; 和c）加热近井筒区域。

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