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运用地震地层学、层序地层学、测井沉积学分析手段,对辽河滩海地区下第三系的沉积体系及展布特征进行了研究。其结果,识别出6种主要沉积体系类型,即泛滥平原、扇三角洲、辫状河三角洲、三角洲、湖底扇及湖泊相。油气勘探实践表明:三角洲、扇三角洲和泛滥平原沉积体系发育了该区最重要的储集砂体;湖底扇沉积体系发育的砂体是潜在的、具有良好油气勘探前景的储集体。
Using the methods of seismic stratigraphy, sequence stratigraphy and log sedimentology, the sedimentary system and distribution characteristics of the Lower Tertiary in the Liaohe beach area are studied. As a result, six major types of sedimentary systems were identified: flood plain, fan delta, braided river delta, delta, sublacustrine fan and lacustrine facies. Oil and gas exploration practice shows that deltaic, fan delta and floodplain sedimentary systems have developed the most important reservoir sand bodies in this area. The sand body developed by the sublacustrine fan depositional system is a potential reservoir with good prospect of oil and gas exploration.