A lot of shallow transitional gas pools actually resulted from anaerobic degradation.

我国许多所谓的浅层过渡气实际上是原油厌氧细菌降解作用的结果。

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The Suining Formation gas pools will(serve as) the key target of extended assessment and risk exploration of the shallow gas in the study area.

该大型岩性气藏的发现，说明川西地区浅层气仍然具有大的勘探前景，遂宁组气藏将是浅层扩展评价勘探和风险勘探的重要目标。

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Moffett believed that by using new seismic tools and drilling techniques the company might discover deeper and larger pools of gas under the now-exhausted shallow pools of oil and gas.

FORBES: A Gold Mine In Oil Exploration