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应用“区域地震测井法”(“areal well shoot”),在中心位于犹他州比维尔县的犹他州地热9-1号井,研究了圈定断裂带位置和估算裂隙参数的可行性。在一个井中检波器和井周围呈径向、方位分布的炮点阵列之间,进行了高分辨率的走时测量。通过比较不同方位的走时,研究了井周围速度与方位的关系,发现了速度的各向异性,这种状态与基底岩石中存在断裂相一致,而断裂的方向与当地最后一幕断层活动的方向是亚平行的。以上解释由于井周围覆盖层厚度的变化而复杂化了,走时的延迟也表明存在着一个低角度的断裂带,它大约在1500ft(?)深处与这口井相交。
Using “areal well shoots”, the feasibility of delineating fault locations and estimating fracture parameters was studied at Utah Geothermal 9-1, a center located in Beeville, Utah. High-resolution traveltime measurements were performed between a well detector and the array of shots radially and azimuthally distributed around the well. By comparing the travel time of different azimuths, the relationship between the velocity and azimuth of the well was studied and the anisotropy of velocity was found. This state is consistent with the existence of faults in the basement rocks. The direction of the fault and the direction of the fault activity in the last scene in the area are Asian parallel. The above explanation is complicated by changes in the thickness of the coating around the well, and the delay in travel time also indicates the presence of a low-angle fault zone that intersects the well at approximately 1,500 ft (?) Depth.