济阳坳陷沾化东部古—中生界潜山构造样式与成藏模式  

Structural style and hydrocarbon accumulation pattern in the PaleozoicMesozoic buried hills in the eastern Zhanhua Sag,Jiyang Depression

作　　者：张波[1] 王永诗[2] 黄铮 王浩 Zhang Bo;Wang Yongshi;Huang Zheng;Wang Hao(Research Institute of Exploration and Development,Sinopec Shengli Oilfield Company;Sinopec Shengli Oilfield Company)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院 [2]中国石化胜利油田分公司

出　　处：《中国石油勘探》2024年第2期46-57,共12页China Petroleum Exploration

基　　金：中国石油化工股份有限公司科研攻关项目“济阳坳陷近源领域成藏体系评价及目标优选”(P22066);中国石化胜利油田分公司科研攻关项目“孤西潜山带油气成藏规律研究及目标优选”(YKK2207)。

摘　　要：济阳坳陷古—中生界潜山经历多期挤压、伸展、走滑及剥蚀等构造作用的叠加,以沾化东部潜山为例,利用丰富的钻井与地震资料,在潜山构造层划分的基础上,剖析了潜山构造演化及构造特征,总结了潜山构造样式,建立了油气成藏模式。研究结果表明,晚古生代以来,在多期不同方向、不同性质构造运动的作用下,沾化东部古—中生界潜山经历了4期挤压作用、2期伸展作用、2期走滑作用、4期剥蚀作用,形成了高位、中位和低位3类潜山,发育了伸展、挤压、走滑与剥蚀4类9种构造样式。依据构造样式及潜山地层残留和上覆盖层的差异,建立了3类潜山成藏模式,其油气来源、油气富集层段及富集特征各不相同,其中高位潜山斜坡带上古生界与中生界、中位潜山下古生界和低位潜山中紧靠油源的潜山各层系油气成藏条件最为有利,油气富集程度高,是研究区下一步重点勘探对象。The Paleozoic-Mesozoic buried hills in Jiyang Depression experienced multi-stage compression,extension,strike slip and denudation.By taking the eastern Zhanhua Sag as an example,a large amount of well drilling and seismic data is used to identify structural layers,analyze structural evolution and characteristics,summarize structural style of buried hills,and establish hydrocarbon accumulation pattern.The study results show that,controlled by multi-stage tectonic movements after the Late Paleozoic with various directions and natures,buried hills in the eastern Zhanhua Sag experienced four stages of compression,two stages of extension,two stages of strike slip and four stages of denudation,developing three types of buried hills,i.e.,high,middle and low buried hills,and forming four categories and nine types of structural styles,including extension,compression,strike slip and denudation.Based on structural styles,residual strata and the overlying strata of the buried hill,three types of hydrocarbon accumulation patterns have been established,which show diversified hydrocarbon sources,enrichment layers and enrichment characteristics.Among them,the hydrocarbon accumulation conditions are the most favorable in the Upper Paleozoic and Mesozoic on the slope of the high buried hill,the Lower Paleozoic in the middle buried hill,and all layers closely adjacent to source rock in the low buried hill,which are the key exploration targets in the near future.

关 键 词：济阳坳陷 沾化东部 古—中生界 潜山 构造演化 构造样式 成藏模式 

分 类 号：TE111.2[石油与天然气工程—油气勘探]