FORMATION AND DISTRIBUTION OF OIL AND GAS POOLS IN BOXING AREA OF THE DONGYING DEPRESSION, THE BOHAIWAN BASIN
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摘要: 该文讨论了东营凹陷西南部博兴地区的油气成藏条件、油气藏特征及油气富集规律。受特殊地质背景的影响,该区成藏条件较为优越,储集体十分发育,但油源条件相对不足。油气藏类型丰富多样,以地层及复合油气藏发育为特色,油气藏的类型在纵向上和平面上都有一定的展布规律。油气主要富集于受断裂和古隆起控制的正向构造带中,油气富集层位具有东北部深且相对富油、西南部浅且相对富气的特点,油气富集层系具有明显的分区性,构造背景及油气源条件对油气的富集具有重要的控制作用。Abstract: This paper discussed the formation conditions, types and distribution characteristics of oil and gas pools in the southwestern part of the Dongying Depression, the Bohaiwan Basin.Affected by the special geologic background, the study area has good conditions for pool formation and has a variety of oil and gas pools.There are many excellent reservoirs in the area, but the oil and gas sources are not sufficient.Oil and gas in the area are concentrated in the positive structural belts controlled by faults and paleo-up-lifts.The oil and gas reservoirs are deep and relatively oil-enriched in the east and the north parts, and are shallow and relatively gas-enriched in the west and the south parts.The reservoirs of hydrocarbon have obvious zonation, and tectonic background and hydrocarbon-source conditions have important controlling effects on the enrichment of oil and gas.
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