高 5区块油气藏位于南堡凹陷高尚堡地区高北断层上升盘高 5断鼻中部 ,在钻探开发以前 ,被认为是受断块控制的构造油气藏。钻探开发以后 ,发现其构造形态为完整的断鼻构造 ;物源主要来自北东方向 ;油层最厚的位置不在构造高部位而在断鼻的腰部 ;累积产油量曲线与油层等厚图形态基本一致。因此 ,该油气藏应是一个典型的构造背景下的岩性油气藏。油气藏主要受控于沉积作用、构造运动、成岩及后生作用。扇三角洲前缘亚相带为最有利的储集体发育带 Block 5 of the Gao-5 block is located in the middle of the high-up section of the Gaobei fault rising plate in the Gaobeidao area, Nanpu sag, and was considered as a structural reservoir controlled by a fault block prior to drilling. After drilling and development, it was found that the tectonic configuration was a complete nose-break structure; the source was mainly from the NE direction; the thickest part of the oil layer was not located at the high part of the structure but at the waist of the broken nose; Basically the same. Therefore, the reservoir should be a typical lithologic reservoir with tectonic setting. Reservoirs are mainly controlled by sedimentation, tectonic movement, diagenesis and epigenetic effects. Fan delta front subfacies belt for the most favorable reservoir development zone