Fault Tips as Favorable Drilling Targets for Geothermal Prospecting - a Fracture Mechanical Perspective
Fault Tips as Favorable Drilling Targets for Geothermal Prospecting - a Fracture Mechanical Perspective
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断层提示是地热勘探的有利钻探目标——断裂力学视角
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
I. Moeck
中科院分区：
文献类型：
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作者：
T. Backers;I. Moeck
地热系统的产能往往受断层和裂缝的控制。断层可以对流体流动和热传输产生积极影响，从而导致在断层带处的钻探目标。然而，断层的哪一部分可能是最有利的钻探地点仍在争论之中。内华达州大盆地的地热系统目录表明，不是断层平面的中心是高地热活动的背景。相反，阶跃区，断层交叉点和断层尖端属于大盆地地热田的有利构造环境。我们试图从断裂力学的角度解释为什么断层尖端可能是地热勘探的有利目标的原因和影响。
The productivity from geothermal systems is often controlled by faults and fractures. Faults can have positive effects on fluid flow and heat transport, leading to drilling targets at fault zones. It is, however, under debate which part of the fault might be the most favorable site for drilling. The catalog of geothermal systems in the Great Basin, Nevada, demonstrates that not the center of fault planes is the setting for high geothermal activity. Instead, step-over regions, fault intersections and fault tips belong to the favorable structural settings of geothermal fields in the Great Basin. Our attempt aims to explain from a fracture mechanical perspective the cause and effect why faults tips may represent favorable targets for geothermal exploration.