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前人认为,松辽盆地白垩系发育6大物源及11条主要水系,但在东南隆起带又发现了一条来自榆树方向的水系并命名为榆树水系,该水系母岩为张广才岭加里东运动及印支运动期花岗岩。榆树水系从泉头组到嫩江组一直继承性发育,主要以河流和三角洲沉积为主。地质综合研究表明,榆树水系具有较大的勘探潜力,油源主要为青一段、营城组及沙河子组暗色泥岩,扶杨油层是榆树水系中、浅层勘探的主要目的层。目前该水系已经成为吉林油田增储上产的重要领域。
Previously, the authors believe that the Cretaceous Songliao Basin, the development of six major sources and 11 major water systems, but in the southeast uplift and found a direction from the elm of the water system and named the elm water system, the water system for the Zhang Guangcai Caledonian movement and Indosinian period granite. The elm water system has been inherited and developed from Quantou Formation to Nenjiang Formation, mainly by rivers and delta sediments. Geological comprehensive study shows that the elm water system has great potential for exploration. The main oil source is Qingyidan, Yingcheng Formation and Shahezi Formation dark mudstone. Fuyang oil layer is the main target for exploration of middle and shallow strata in the elm water system. At present, the water system has become an important area for increasing production and storage in Jilin Oilfield.