Passive Seismic Imaging of Deformation Induced by Hydraulic Fracture Complexity in the Naturally Fractured Barnett Shale
Passive Seismic Imaging of Deformation Induced by Hydraulic Fracture Complexity in the Naturally Fractured Barnett Shale
复制标题
自然裂缝 Barnett 页岩中水力裂缝复杂性引起的变形的被动地震成像
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
N. Boroumand
中科院分区：
文献类型：
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作者：
S. Maxwell;C. Waltman;N. R. Warpinski;M. Mayerhofer;N. Boroumand
微震测绘在巴尼特页岩中得到广泛应用，以绘制与刺激与预先存在的裂缝相互作用相关的水力裂缝复杂性。先前的研究表明，油井性能与地震活动范围之间存在相当的相关性。然而，除了对增产裂缝网络范围的测量之外，该裂缝网络的特征预计也会影响油井性能。特别是，裂缝间距被认为是控制潜在气流的重要因素。在本文中，我们利用总地震矩释放的密度（微震强度的稳健测量）作为可能与裂缝密度相关的地震变形的指示。该研究使用了一组水力压裂刺激的微震图，包括通过地震活动区域的范围测量的刺激储层体积与井性能相关性较差的情况。结合地震矩密度来评估裂缝密度与网络范围，观察到与井性能的相关性得到改善。
Microseismic mapping is extensively utilized in the Barnett Shale, to map hydraulic fracture complexity associated with interactions of the stimulation with pre-existing fractures. Previous studies have indicated a fair correlation between the well performance and extent of the seismically active volume. However, in addition to this measure of the extent of the stimulated fracture network, the characteristics of this fracture network is also expected to impact the well performance. In particular, the fracture spacing is believed to be important factor controlling the potential gas flow. In this paper, we utilize the density of the total seismic moment release (a robust measure of the microseism strength) as an indication of the seismic deformation that may correlate to the fracture density. The study uses a set of microseismic maps of hydraulic fracture stimulations, including cases where the stimulated reservoir volume measured by the extent of the seismically active region poorly correlated with the well performance. Incorporating the seismic moment density to assess the fracture density with the network extent, an improved correlation with the well performance was observed.