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STORAGE RETENTION TIME OF CO_2 IN SEDIMENTARY BASINS; EXAMPLES FROM PETROLEUM SYSTEMS

机译：沉积盆中CO_2的储存保留时间;石油系统的例子

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Questions often asked by the public in regard to the concept of CO_2 storage include; "But won't it leak?", and "How long will it stay down there?". The natural environment of petroleum systems documents many of the processes which will influence CO_2 storage outcomes, and the likely long (geological) timeframes that will operate. Thousand of billions of barrels of hydrocarbons have been trapped and stored in geological formations in sedimentary basins for 10s to 100s of millions of years, as has substantial volumes of CO_2 that has been generated through natural processes. Examples from Australia and major hydrocarbon provinces of the world are documented, including those basins with major accumulations that are currently trapped in their primary reservoir, those that have accumulated hydrocarbons in the primary reservoir and then through tectonic activity spilled them to other secondary traps or released the hydrocarbons to the atmosphere, and those that generated hydrocarbons but for which no effective traps were in place for hydrocarbons to accumulate. Some theoretical modelling of the likelihood of meeting stabilisation targets using geological storage are based on leakage rates which are implausibly high when compared to observations from viable storage locations in the natural environment, and do not necessarily account for the likelihood of delay times for leakage to the atmosphere or the timeframe in which geological events will occur. Without appropriate caveats, they potentially place at risk the public perception of how efficient and effective appropriately selected geological reservoirs could be for storage of CO_2. If the same rigorous methods, technology and skills that are used to explore for, find and produce hydrocarbon accumulations are now used for finding safe and secure storage sites for CO_2, the traps so identified can be expected to contain the CO_2 after injection for similar periods of time as that in which hydrocarbons and CO_2 have been stored in the natural environment.
机译：公众经常向CO_2储存概念提出的问题包括; “但不会泄漏？”，并“它会留下多长时间？”。石油系统的自然环境记录了许多影响CO_2存储结果的过程，以及将运行的可能的长（地质）时间框架。已经捕获了数十亿桶的碳氢化合物并储存在沉积盆地的地质形成中，10岁至100多年的数百万，这具有通过自然过程产生的大量CO_2。澳大利亚和世界主要碳氢化合物省份的例子被记录，包括目前陷入其主要储层中的主要积累的盆地，其中初级储层中累积的碳氢化合物，然后通过构造活动将它们溢出到其他次级陷阱或释放碳氢化合物到大气中，以及生成烃的那些，但是没有有效的捕集物用于碳氢化合物累积。使用地质储存的满足稳定目标的可能性的一些理论建模基于泄漏率，与自然环境中可行的存储位置的观察相比，这是令人难以置疑的高度，并且不一定占泄漏延迟时间的可能性大气层或地质事件将发生的时间范围。 Without appropriate caveats, they potentially place at risk the public perception of how efficient and effective appropriately selected geological reservoirs could be for storage of CO_2.如果用于探索和生产碳氢化合物累积的相同严格的方法，技术和技能现在用于查找CO_2的安全和安全的存储站点，则可以预期如此识别的陷阱在注射后含有类似的陷阱其中碳氢化合物和CO_2已储存在自然环境中的时间。

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