从井眼和震源机制联合反演得到的完整应力状态的定量限制：Alberta，Fox Creek
Quantitative constraints to the complete state of stress from the combined borehole and focal mechanism inversions: Fox Creek, Alberta
摘要：
我们开发了一个定量的预报模式的应力状态的地壳体积，包括Duvernay形成的空间范围超过150公里× 150公里的集中在市附近的狐狸溪。通过对20个钻孔成像测井资料的分析，确定了最大水平压缩SH的平均方向为N43°E。一个模型的垂直应力SV，校正地形变化，提供了从集成的3D密度体积构造从1125密度日志。最小水平压缩Sh和孔隙压力PP通过分析Duvernay地层内进行的57口井测试进行评估;通过观测值的克里金法开发的3D模型。附近地震的震源机制解的应力反演验证了假设的安德森应力状态，并提供了进一步允许估计最大水平压缩SH的应力形状比。提供了一个程序，允许用户计算全套必要的组件来描述我们的研究区域内的Duvernay地层附近的感兴趣的位置的原地应力的状态。
英文摘要：
We develop a quantitative predictive model for the state of stress of a volume of crust encompassing the Duvernay Formation with a spatial extent of over 150 km x 150 km centred near the municipality of Fox Creek. An average direction of the maximum horizontal compression SH is of N43°E, determined from analysis of 20 borehole image logs. A model of the vertical stress SV, corrected for topographic variations, is provided from the integration of a 3D density volume constructed from 1125 density logs. The minimum horizontal compressions Sh and pore pressures PP are evaluated through analysis of 57 well tests carried out within the Duvernay Formation; 3D models developed by kriging of the observed values. Stress inversion of the focal mechanism solutions for the earthquakes nearby validated the assumed Andersonian stress regime and provided the shape-ratio of the stress which further allowed estimation of maximum horizontal compression SH. A program is provided allowing the user to calculate the full set of components necessary to describe the states of in-situ stress for a location of interest near the Duvernay formation within our study area.
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