Northern Yaodian Oilfield lies on eastern part of Shanbei Slope in Ordos Basin and the primary oil-bearing bed is Yanchang Formation.

姚店油田北区位于鄂尔多斯盆地陕北斜坡东部，三叠系延长组是其主要的含油层系。

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In Shenyang oilfield, primary oil gas water three phase separating and heating and secondary thermo chemical dehydration are adopted as oil gas processing technology.

油气处理工艺，沈阳油田采用一级油、气、水三相分离与加热，二级热化学脱水。

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The height of vertical displacement controls the upward migration of oil and gas, and primary oil pools are formed in the lower part of the main faults and secondary pools in their upper part.

断层断开高度控制了油气运移的高度，在主断层下部形成原生油藏，上部形成次生油藏。

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To make matter worse,according to Sosa, the government has fired thousands of technicians from the state-owned oil company,PDVSA and replaced them with workers whose primary qualification is their loyalty to President Chavez.

VOA: standard.2010.08.06

And just think about this: Sometime down the line, you could potentially live in a converted oil silo as your primary residence and keep a waterfront vacation property at a retrofitted oil rig.

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But Mossadegh wasn't happy that the profit from the country's primary resource -- oil -- was not staying in the country.

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Only a small shift in national energy policy to favor natural gas over oil would make this play even more attractive as cars shift to natural gas from oil as their primary fuel.

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