Oil-gas resources are a base of upstream oil-gas industrial link and a guarantee of downstream industrial link as well.

油气资源是上游油气产业链的基础，是下游产业链的保障。

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We continue to advance our upstream oil and gas activities in West and Southern Africa, the Asia Pacific region and Canada.

我们将继续在非洲西部和南部、亚太地区和加拿大推进我们的上游石油及天然气业务。

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If the regenerative air dryer will be oil steam can be in its pollution, upstream oil filters to set up steam extend the service life of desiccant.

如果再生式空气干燥器会被油蒸气污染，则可在其上游设置油蒸气过滤器，以延长干燥剂的使用寿命。

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Mark Druskoff is based in Houston and covers midstream and upstream oil and gas.

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The third biggest U.S. integrated oil company will separate its upstream oil-and-gas exploration and production division from its downstream refining division.

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Sinopec plans to use the proceeds to acquire overseas upstream oil and gas assets now held by its parent company, China Petrochemical Corp.

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