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歧口凹陷西南缘是构造岩性油气藏发育区,受斜坡背景控制,发育不整合、上倾尖灭、孤立砂体、颗粒灰岩等多种类型构造岩性油气藏,具有良好的勘探潜力。通过剖析歧口凹陷西南缘岩性油气藏成藏条件,对该区油气分布规律与油气成藏模式进行了系统的总结,指出下步岩性油气藏的有利勘探方向,对歧口凹陷今后的油气勘探有一定的借鉴作用。
The southwestern margin of Qikou sag is a structural reservoir of lithologic oil and gas reservoirs with various types of structural lithologic reservoirs controlled by slope background, unconformity, updip pinch, isolated sand body and grain limestone, and has good exploration potential . By analyzing the reservoir forming conditions of the lithologic reservoirs in the southwestern margin of the Qikou Sag, the oil and gas distribution laws and hydrocarbon accumulation patterns in this area are systematically summarized. The favorable exploration directions for the next lithologic reservoirs are pointed out. Oil and gas exploration has some reference.