Quantification of heat and fluid flow through time by 3D modelling: The example of the Jeanne d'Arc basin, offshore eastern Canada

Jeanne d'Arc盆地（JdA）是早侏罗世开始的两阶段大西洋裂谷的一部分，是一个失败的裂谷。它形成了一个v形盆地，向北加深和开放，里面填满了深度超过22公里的沉积物。蒸发岩沉积于第一裂谷期，灰岩和细弹性沉积于中间安静期，粗弹性沉积于第二裂谷期。Terra Nova油田是Jeanne d’arc盆地断裂和褶皱形成油气圈闭的地区之一。该油田由于断层作用在储层中形成的隔室而变得复杂，其中一些有超压，而大多数没有。这表明至少有一些隔间没有通信。整个盆地只有一个烃源岩（Egret段），并通过地震、井和测井数据以及大量可用的地球化学数据进行了很好的勘探和描述。这使得该地区非常独特，可以测试和量化基本的地质过程，如封闭盆地内碳氢化合物的生成、运移和聚集。分析工作基于数值盆地模拟，并考虑了不同的工具（如测井解释、地球化学和岩石学分析和数据解释、地壳拉伸模型、超压模型）。

The Jeanne d'Arc Basin (JdA) formed as a failed rift as part of the two-stage Atlantic rifting that started in the Early Jurassic. It formed a V-shaped basin, deepening and opening to the north, that was filled in with sediments to a depth of over 22 km. Evaporites deposited during the first rifting episode, limestones and fine elastics during a quiet intermediate period, and coarse elastics during the second episode. The Terra Nova Field is one area of the Jeanne d'Arc Basin where faulting and folding formed hydrocarbon traps. This field is complicated by the formation of compartments in the reservoir through faulting, some of which have overpressure, and most do not. This shows that at least some of the compartments are not in communication. The entire basin is charged by only one source rock (Egret Member) and is well explored and described trough seismic, well and logging data as well as trough a huge set of available geochemistry data. This makes the area very unique to test and quantify fundamental geoprocesses such as generation, migration and accumulation of hydrocarbons within a confined basin. The analytical work is based on numerical basin simulation taking different tools into account (e.g. log interpretation, geochemical as well as petrological analysis and data interpretation, crustal stretching models, overpressure models).