...沙一段 齐家务地区 渤海湾盆地 [gap=1658]Keywords】: trace element,carbon and oxygen isotope,lacustrine carbonate rock,first member of Shahejie Formation,Qijiawu area,Bohai Bay Basin ..
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Many layers of carbonate rock deposition existed in the first member of Shahejie formation in Shanghe area of Huimin sag.
惠民凹陷商河地区沙一段发育多层碳酸盐岩沉积。
The widely-developed faults made the fault trap being dominant in the oil-gas reservoirs of the first member of Shahejie Formation. The fault closure decided the extent of hydrocarbon preservation.
在圈闭类型上，断层的广泛发育使沙一段油气藏以断层圈闭为主，良好的断层封闭性决定了油气藏的保存程度。
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