| 摘要 |
<p>An initial three-dimensional representation depicting faults of the underlying geology of a surveyed region is derived from geophysical data (e.g. potential field data such as gravity, magnetic field, magentotelluric or electromagnetic surveys). The accommodation zone (i.e. the region of disruption around major faults) for each depicted fault is calculated using geomechanical parameters including at least stress and strain, for instance using finite element or boundary element analysis. A final three-dimensional representation depicting both faults and accommodation zones is then generated. The calculation of the accommodation zones can be used to determine the probability of encountering a non-imaged subtle fault when drilling, such as when drilling horizontal wells in shale layers.</p> |
