The Changchun people pharmaceutical industry group Limited company, sets up in March, 2007, is located in the excellent surroundings Changchun economic development zone, the area 43,260 square meters.

长春人民药业集团有限公司，组建于2007年3月，座落于环境优美的长春市经济技术开发区，占地面积43,260平方米。

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Two methods are selected to evaluate economic recoverable reserves of Shuangyang formation in Changchun oilfield:Economic Limit Water-cut Method and Cash- flow Method.

前言： 选用经济极限含水率法和现金流通法对长春油田双阳组经济可采储量进行评价。

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