With the increasing of oil well and producing reserves, it is difficult for conventional artificial lift technology to meet the producing need.

随着油井深度及稠油动用储量的增加，常规举升工艺已很难满足生产的需要。

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With the increasing of oil well and producing reserves, it is difficult for conventional artificial lift technology to meet the producing need.

柱塞气举是通过在油管柱内上下循环运动的柱塞把地层产液举出地面的人工举升方法。

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The geological complexity of the proved non-producing reserves resulted in the difficulty of its exploitation technique and economic evaluation.

探明未开发储量的地质复杂性，决定了其开发技术和经济评价的难度。

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Given the size of the prize and technical complexity of producing value from efficiency reserves, a new breed of energy development comparable to the oil and gas industry has begun to take shape.

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Despite such promise, many local leaders have insisted that no pressure be put on the reserves until they actually start producing revenue, which they expect as early as 2018 or 2019.

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Likewise, expendable-resource-rich countries, such as the oil-producing nations, might want to build up reserves (and establish sovereign wealth funds) to share their blessings with future generations who may no longer be able to depend on that resource.

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