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白音查干凹陷是一个北断南超的箕状断陷湖盆 ,其主要生油、储油层系为下白垩统 ,主要发育冲积扇及扇三角洲沉积。油气以向南部斜坡带的侧向运移为主 ,构造背景及砂体分布规律控制油气富集 ,南斜坡带是油气主要聚集区。该区主要发育自生自储油藏和下生上储油藏 ,且自生自储油藏优于下生上储油藏。勘探经验是下洼找稀油、近凹找富集、斜坡带浅层找稠油
The Baiyinchagan Sag is a north-subsidence Minjiang fault-depression lake basin. Its main oil-producing and reservoir system is Lower Cretaceous. It mainly develops alluvial fans and fan delta deposits. Oil and gas are mainly migrated laterally to the southern slope, and the tectonic setting and distribution of sand bodies control the enrichment of oil and gas. The south slope zone is the main oil and gas accumulation area. The area mainly develops the self-generated self-storage reservoirs and the subsurface upper reservoir, and the self-generated self-reservoirs are superior to the lower ascending reservoirs. Exploration experience is to find the next depression thin oil, near the concave looking for enrichment, shallow slope to find heavy oil