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胜利油区奥陶系包括中、下奥陶统,主要为蒸发台地相、局限台地相和开阔台地相碳酸盐岩,厚度约500～700n,;烃源岩主要包括暗色灰岩、泥灰岩、豹斑灰岩等,厚度一般在250～300 m,以Ⅰ型或Ⅱ,型干酪根为主,处于高成熟阶段。研究区分为北区、西区和东区三个单元,寻找下古生界原生油气藏以西区为最有利区。选取0.1％作为本区碳酸盐岩烃源岩残余有机碳含量的下限,则西区(均在0.16％以上)和北区(普遍大干O.1％)均为有效烃源岩,而东区(0.06％～0.09％)为非烃源岩。西区发育有较多相对完整的背斜或鼻状构造,盖层条件也相对较好;用有机碳法估算,全区原生油气资源潜力总量为77×10~8t,以西区潜力最大,约占67.5％。
Ordovician in the Shengli Oil Region includes the Middle and Lower Ordovician, mainly evaporite platform, confined platform facies and open platform carbonate facies with a thickness of about 500 ~ 700n. The source rocks mainly include dark limestone, Rock and leopard spot limestone. The thickness is generally 250-300 m, mainly type I or type II kerogen, which is in the high mature stage. The study is divided into three units: North, West and East. The study finds that the western part of the Lower Paleozoic oil and gas reservoir is the most favorable area. 0.1% is selected as the lower limit of the residual organic carbon content of carbonate source rocks in this area, both of which are effective source rocks in the west (above 0.16%) and north (generally over 0.10%), while the east (0.06% -0.09%) are non-source rocks. There are more relatively complete anticlines and nose structures in the western region, and the cover conditions are also relatively good. Using the organic carbon method, the total potential of primary oil and gas resources in the region is 77 × 10 ~ 8t, with the highest potential in the west and about Accounting for 67.5%.