滨里海盆地东南部盐上层系油气运聚规律与成藏  

Oil and Gas Migration and Accumulation & Reservoir Formation in Post-Salt Strata in Southeast Pre-Caspian Basin

作　　者：张建球[1] 米中荣[1] 周亚彤[1] 饶轶群[1] 

机构地区：[1]中国石化华东分公司规划设计研究院,江苏省南京市210036

出　　处：《中国石油勘探》2010年第5期58-62,80,共6页China Petroleum Exploration

摘　　要：从纵向上、平面上的差异性出发,通过研究滨里海盆地东南部盐上层系油气藏的成藏特点和分布规律,指出盐上层系油气运移具有以下5个明显特征:①盐体活动形成的"有效盐窗"是盐上层系获得油气的重要途径;②盐上层系油气成藏的关键时刻分别在二叠纪—三叠纪、三叠纪末—早侏罗世沉积时期、中侏罗世—白垩纪,三叠纪末期成藏期最重要;③油气在平面展布分带性强,总体趋势是盐丘核部仅发育K1、J2稠油油藏,向盐丘侧翼盐檐部位及盐间分别发育T2气藏、油气藏和T1、P2油藏;④后期的保存条件是形成盐上优质经济油气储量的关键;⑤盐岩边部的盐檐部位稳定的侏罗系覆盖之下的三叠系背斜、断背斜圈闭,是盐上最有利的勘探目标。From the vertical and horizontal difference, study on post-salt reservoir formation features and distribution rules in southeastern Pre-Caspian Basin is studied. It points out that oil and gas migration in post-salt strata has five distinctive features as follows: ① Valid salt window formed by salt movement is the main migration pathway of post-salt reservoir; ② The critical stages of post-salt reservoir formation are P-T, T3-J, J2-K, and the end of T3 is the most important stage; ③ The horizontal distribution of hydrocarbon is always zonal, with its overall trend of K1, J2 inspissated pool in salt dome core and T2 gas pool as well as hydrocarbon reservoir & T1, P2 oil reservoir in salt dome flank and Inter-Salt Dome; ④ Late preservation is the key factor in forming post-salt high-grade commercial reserves reservoir; ⑤ T anticline and faulted -anticline trap under stable J in Salt flank is the most favorable exploration target.

关 键 词：滨里海盆地 盐上层系 油气运移聚集 成藏模式 

分 类 号：TE112.12[石油与天然气工程—油气勘探]