It can also be used to calculate recoverable reserves according to the extreme oil steam ratio in this period.

又可根据蒸汽吞吐阶段的极限油汽比，计算该阶段的可采储量。

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Cyclic steam stimulation is a major way of recovering heavy oil at present. Efficient development is highly dependent on rational using of steam energy and improving oil-steam ratio.

蒸汽吞吐是目前稠油油藏开发的主要方式，合理利用蒸汽热能、提高油汽比对于稠油油藏的经济有效开发非常重要。

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The statistics of 36 oilfield steam drive pilot test results show that the oil-steam ratio depends on not only the reservoir parameters, but also the steam injection rate.

国外36个蒸汽驱现场试验结果统计规律表明，蒸汽驱油汽比不仅与地质参数有关，而且与注汽速度密切相关。

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Their specialized techniques, production leases, and lower steam-to-oil production ratio, make CVE well-suited to harvesting the northeast Athabasca oil sands deposit.

FORBES: Go Offshore With Canadian Oil Sands