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伊通盆地莫里青断陷主要油藏类型为岩性油气藏,通过统计试油证实为油层的砂体的深度和储集物性分析认为,莫里青断陷古近系双阳组岩性油气藏成藏主控因素为围岩生烃条件和砂体物性条件:围岩供烃门限深度为2700m,双一段及双二段下部暗色泥岩能够大量排烃,为其中的岩性圈闭提供油气,断陷中部78%的岩性油藏在此深度之下;砂体达到聚烃门限需要孔隙度大于10%,渗透率大于0.8×10-3μm2,96%的油层物性在此门限值之上。解剖双阳组典型岩性油气藏认为,只有两主控因素均达到门限时,圈闭内才可能聚集油气成藏,当两主控因素条件较好时,可能形成含油气性较好的岩性圈闭油气藏。
The main reservoirs of the Moliqing Fault in the Yitong Basin are lithologic reservoirs. The results of statistical test proved that the depth and reservoir properties of the sand bodies in the reservoirs are as follows. The Paleogene Shuangyang Formation lithologic oil and gas The main reservoir controlling factors are the hydrocarbon generation conditions of surrounding rock and physical properties of sand body: the threshold of hydrocarbon supply to the surrounding rock is 2700 m, and the dark mudstone of the lower part of Shuang 2 and the 2nd can drain large amounts of hydrocarbons to provide oil and gas for the lithologic trap 78% of the lithologic reservoirs in the middle of the fault depression are below this depth. The reservoir needs to have a porosity greater than 10% for the hydrocarbon threshold and a permeability greater than 0.8 × 10-3μm2 and 96% for the reservoir. At this threshold on. The typical lithologic reservoirs of the Anliang Shuangyang Formation suggest that it is only possible to accumulate hydrocarbon accumulation within the trap when the two main controlling factors reach the threshold. When the two main controlling factors are in good conditions, lithology with better oil and gas may be formed Traps the reservoir.