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为了建立二连断陷湖盆辫状河三角洲沉积相模型 ,确定油气勘探领域 ,根据二连盆地吉尔嘎朗图等 30个凹陷的钻井岩性剖面、地震剖面、沉积构造、电性特征、测试结果和油气显示等资料 ,研究了断陷湖盆缓岸的大中型砂砾岩体的形成条件、储层微相特征和含油性 ,建立了相模式 .结果表明 :这类砂体属辫状河三角洲成因 ,发育辫状河三角洲平原等三个亚相、8个微相 ,存在以牵引流成因为主的沉积构造 .它的前缘水道和分支坝具有良好的储集性能和成油条件 ,是本区油气勘探的主要方向
In order to establish the sedimentary facies model of the braided delta in the Erlian fault basin, and to determine the oil and gas exploration areas, according to the drilling lithology, seismic profiles, sedimentary structures, electrical characteristics and testing of 30 wells in the Erlian Basin, Results and oil and gas shows the formation conditions, reservoir microfacies characteristics and oiliness of the medium and large gneiss body, and established the facies model.The results show that these sand bodies are braided river delta Origin, development braided river delta plain and other three subfacies, 8 micro-facies, there is mainly due to the formation of traction flow sedimentary structure.Its leading edge channel and the branch dam has good reservoir performance and oil conditions, is The main direction of oil and gas exploration in this area