SEDIMENTARY SYSTEM DISTRIBUTION AND SUBTLE TRAPS EXPLORATION OF LIANMUQIN FORMATION CRETACEOUS,SHENGBEI STRUCTURE ZONE,SHENGBEI SAG
胜北洼陷胜北构造带白垩系连木沁组沉积体系分布与岩性油气藏勘探

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. The sandstone bodies of this sedimentary system are buried in shallow position and in good quality of porosity and perme ability. Shengbei structure zone and its south flank are the main position for sandstone and available for the north pinch out subtle traps development. Combined the background of upheaval in sag and cling to the strike-shift faults of Shengbei F3 and F4, which join the hydrocarbon source rocks of coal-bearing series of Shuixigou group, lower-middle Jurassic and lacustrine mudstone of Qiketai formation of middle Jurassic, the Shengbei structure zone and its south flank are favorable shallow position for secondary subtle traps exploration of Cretaceous in Shengbei sag.