Lianmuqin Formation of Cretaceous,Shengbei structure zone of Shengbei Sag,Turban-Harmy basin,belongs to typical fan-deltaic front sedimentary system of north sediment source.

• 吐哈盆地胜北洼陷胜北构造带白垩系连木沁组属于典型的北物源扇三角洲前缘沉积体系,其砂体埋藏深度较浅,储层物性较好,向北上倾尖灭型岩性圈闭发育。