The reservoirs found in the Lower Tertiary are mainly structural and stratigraphic type.

下第三系发现的油气藏以构造油气藏和地层油气藏为主。

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The accumulated oil and gas in the trap came from the Lower Tertiary hydrocarbon source rock 2000~5000 meters below.

渤海油区上第三系为河流相沉积，不能生油，其圈闭中聚集的油气来自2000?。

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In the regional stratigraphic classification and correlation, the Lower Tertiary strata are absent in Guyang basin, Inner Mongolia.

在区域地层划分与对比中，内蒙古固阳盆地缺少下第三系。

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These days a lot of Chevron's combined brain and computer power is tuned to peer into the gulf's promising Lower Tertiary Wilcox trend.

FORBES: Magazine Article

While the Shenandoah appraisal well encountered more than 1, 000 feet of net pay in high-quality Lower Tertiary-aged reservoirs, the Coronado exploration well encountered more than 400 feet of net pay.

FORBES: ConocoPhillips' New Finds Will Boost Outlook Amid Weaker Production

As if anyone had forgotten, discoveries like these show that there remains massive opportunities for oil and gas discoveries in the Gulf of Mexico, especially in the so-called Lower Tertiary Wilcox trend, which Chevron says could contain 12 billion barrels.

FORBES: Chevron And BP Reveal Big New Deepwater Finds In The Gulf Of Mexico