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目前蠡县斜坡进入已寻找岩性油藏为重要目标的阶段,但该区成藏机理不明确。该区油源充分;发育的“浅水型”三角洲和滨浅湖滩坝相构成了斜坡带的主要储集体;有利的构造背景、古地貌、坡折带及沉积相砂体展布共同控制油藏的形成。在此基础上重构三种成藏模式:鼻状构造中低部“二元”成藏模式;斜坡中带构造坡折成藏模式;潜山围斜部位上倾尖灭、披覆沉积成藏模式。斜坡带成藏模式的解剖,对发现油气新潜力有一定的指导意义。
At present, the slope of Lixian County has entered the stage of searching for the lithologic reservoirs, but the forming mechanism of this area is not clear. The reservoir is rich in oil resources. The developed “shallow water” delta and coastal shallow lake dam facies constitute the main reservoir of the slope belt. The favorable tectonic setting, palaeogeomorphology, slope break zone and sedimentary facies distribution are common Control reservoir formation. On the basis of this, three types of hydrocarbon accumulation modes are reconstructed: nose-shaped middle and lower part “dual ” accumulation mode; Sedimentary accumulation model. The dissection of the accumulation model of slope belt has certain guiding significance for discovering the new potential of oil and gas.