Zichang oilfield is located in the eastern slope of Ordos basin.
子长油田位于鄂尔多斯盆地东部斜坡。
In Yanchang oilfield, serious lost circulation often occur during drilling in Panlong and Zichang areas, directly affect drilling rate.
延长油矿管理局在蟠龙、子长等主生产区经常遇到严重漏失井，直接影响了钻井速度。
The coking process of zichang gas coal in the new type of shaft furnace and furnace'e feature are described. The quality of products and economic benefits are analyzed.
论述了陕西省子长气煤在新型直立炉炼焦的工艺过程及炉型特点，分析了产品质量及经济效益。
The coking process of zichang gas coal in the new type of shaft furnace and furnace'e feature are described. The quality of products and economic benefits are analyzed.
论述了陕西省子长气煤在新型直立炉炼焦的工艺过程及炉型特点，分析了产品质量及经济效益。
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