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研究区位于古城墟隆起西部倾没端,发育寒武系-中下奥陶统碳酸盐岩台地相烃源岩,也是东部斜坡-盆地相优质高效烃源岩的有利运移指向区;加里东中期Ⅰ幕本区存在沉积间断,可能发育中下奥陶统碳酸盐岩缝洞型储层,与上覆巨厚的上奥陶统泥岩组成区内最主要的储盖组合,为岩性-构造复合型油气藏;中下奥陶统油藏具有早期成藏、早期充注、油气演化程度高的特点,晚奥陶世-志留纪是主要成藏期;加里东末期开始本区向NEE翘倾,早海西期定型,油气藏受到调整。古城墟隆起下奥陶统目前勘探程度低,是值得探索的勘探领域。
The study area is located at the western tip of the ancient city ruins uplift, the development of Cambrian - Middle and Lower Ordovician carbonate platform source facies rocks, but also the eastern slope - basin facies of high-quality and efficient source rocks of the favorable migration direction of the area; Gary There are depositional discontinuities in this area during the middle and intermediate stages of the Middle East, and the carbonate reservoir rock-fractured reservoirs may develop in the middle and lower Ordovician carbonate reservoirs, forming the most important reservoir-cap assemblage in the Upper Ordovician mudstone with super-thick overburden. Sexual-structural complex reservoirs. The Middle-Lower Ordovician reservoirs have the characteristics of early gas accumulation, early filling and high degree of hydrocarbon evolution. Late Ordovician-Silurian is the main hydrocarbon accumulation period. The area tilted to NEE, early Haixi period stereotypes, reservoirs are subject to adjustment. The Lower Ordovician uplift from the ancient city ruins is currently under exploration and is an exploration area worth exploring.