Folds associated with inverted extensional faults are important exploration targets in many basins across our planet. A common cause for failure to trap hydrocarbons in inversion structures is crestal breaching or erosion of top seal. The likelihood of failure increases as the intensity of inversion grows. Inversion also decreases the amount of overburden, which can adversely affect maturation of source rocks within the underlying syn-extensional stratigraphic section. However, many rift basins are multi-phase in origin, and in some cases the various syn-rift and post-rift events are separated by multiple phases of shortening. When an inversion event is followed by a later phase of extension and subsidence, new top seals can be deposited and hydrocarbon maturation enhanced or reinitiated. These more complex rift histories can result in intra-basinal folds that have higher chances of success than single-phase inversion-related targets. In other basins, repeated inversion events can occur without significant intervening extension. This can also produce more complicated hydrocarbon maturation histories and trap geometries. Multiple phases of rifting and inversion affected numerous basins in North Africa and the Black Sea region and produced some structures that are now prolific hydrocarbon producing fields and others that failed. Understanding a basin's sequence of extensional and contractional events and the resulting complex interactions is essential to formulating successful exploration strategies in these settings.

中文翻译：

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多阶段延伸和反转的盆地中的油气成藏：以西部沙漠（埃及）和西部黑海为例

与倒置伸展断层有关的褶皱是我们星球上许多盆地的重要勘探目标。碳氢化合物无法捕获到反演结构中的常见原因是地壳破裂或顶部密封层被侵蚀。随着反演强度的增加，失败的可能性也会增加。反演还减少了上覆岩层的数量，这可能会对下层同伸伸展地层内烃源岩的成熟产生不利影响。但是，许多裂谷盆地的起源是多相的，在某些情况下，各种同裂谷和裂谷后的事件被缩短的多个阶段分开。当反演事件之后是延伸和沉降的后期阶段时，可以沉积新的顶封，并增强或重新启动油气成熟。这些较复杂的裂谷历史可能导致基底内褶皱比单相反转相关目标具有更高的成功机会。在其他盆地，重复的反演事件可能发生而没有明显的扩展。这还会产生更复杂的烃成熟历史和圈闭几何形状。裂谷和倒转的多个阶段影响了北非和黑海地区的许多盆地，产生了一些现在是多产油气田的构造，而其他构造则失败了。了解盆地伸展和收缩事件的顺序以及由此产生的复杂相互作用，对于在这些环境中制定成功的勘探策略至关重要。重复的反转事件可能发生而没有明显的中间扩展。这还会产生更复杂的烃成熟历史和圈闭几何形状。裂谷和倒转的多个阶段影响了北非和黑海地区的许多盆地，产生了一些现在是多产油气田的构造，而其他构造则失败了。了解盆地伸展和收缩事件的顺序以及由此产生的复杂相互作用，对于在这些环境中制定成功的勘探策略至关重要。重复的反转事件可能发生而没有明显的中间扩展。这还会产生更复杂的烃成熟历史和圈闭几何形状。裂谷和倒转的多个阶段影响了北非和黑海地区的许多盆地，产生了一些现在是多产油气田的构造，而其他构造则失败了。了解盆地伸展和收缩事件的顺序以及由此产生的复杂相互作用，对于在这些环境中制定成功的勘探策略至关重要。裂谷和倒转的多个阶段影响了北非和黑海地区的许多盆地，产生了一些现在是多产油气田的构造，而其他构造则失败了。了解盆地伸展和收缩事件的顺序以及由此产生的复杂相互作用，对于在这些环境中制定成功的勘探策略至关重要。裂谷和倒转的多个阶段影响了北非和黑海地区的许多盆地，产生了一些现在是多产油气田的构造，而其他构造则失败了。了解盆地伸展和收缩事件的顺序以及由此产生的复杂相互作用，对于在这些环境中制定成功的勘探策略至关重要。