The oil and gas accumulation of the Carboniferous Donghe sandstone in the upwelling areas of the Mid-Tarim Basin is a structural trap accompanying with stratigraphic control factors.
塔里木盆地塔中隆起区石炭系东河砂岩油气藏是一个具有地层控制因素的构造圈闭油气藏。
The sequence boundaries and the slope-break zones are the important factors to control creation of stratigraphic and lithologic traps in the area.
层序地层边界和坡折带是控制本区地层岩性圈闭形成的重要因素。
Because of the big stratigraphic dip in the well Dong 9, it is hard to keep the well bore quality by means of conventional deviation control measures.
东9井由于地层倾角大，用常规防斜措施难以保证井身质量。
Because of the big stratigraphic dip in the well Dong 9, it is hard to keep the well bore quality by means of conventional deviation control measures.
东9井由于地层倾角大，用常规防斜措施难以保证井身质量。
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