渤海湾盆地中生代构造差异演化 与潜山油气差异富集

渤海湾盆地中生代经历了多期构造运动，差异沉降与隆升作用控制了研究区基底地层组合、构造样式的差异展布。综合前人大量研究成果与勘探地球物理资料，对不同凹陷中生代的构造演化分析表明，印支期Ⅱ幕与燕山期Ⅱ幕是控制研究区基底结构差异分布的关键构造期。不同构造时期古亚洲构造域、西太平洋构造域、特提斯洋构造域的差异影响与太行山断裂、盐山—兰聊断裂、郯庐断裂带的差异活动造就了研究区形成了西部强隆构造区、中部反转构造区、东部—北部走滑构造区以及南部持续沉降区4种结构基底。油气勘探成果表明基底结构差异控制了潜山储层的差异发育与供油窗口形成的难易程度，进而控制了潜山油气的差异富集，其中西部强隆区与东部—北部走滑构造区潜山油气富集程度高，富集层位老；中部反转构造区与南部持续沉降区潜山油气富集程度差，潜山油气富集层位新。

Structure differential evolution in Mesozoic Era and its controlling to hydrocarbon enrichment of basement in Bohai Bay Basin,eastern of China

The basement of Bohai Bay Basin suffered different extension and compression through two phases Indo-China movement and three phases Yanshan Movement in Mesozoic Era, which controls the stratum assemblages and structural styles in basement. Based on the previous achievements and data of exploration, the tectonic evolution in Mesozoic Era has been studied, the results show that the second stage of Indo-China Movement and the second stage of Yanshan Movement are the key tectonic periods which make the differences of the basement structure. The influence of the Paleo-asiatic tectonic domain in north, Paleotethys tectonic donmain in south, Pacific tectonic domain in southeast and the active of the Taihang Mountain fault, Yanshan-Lanliao fault, Tan-Lu fault responsible for the four zones of different basement structure which are west uplifted structure zone, middle reversed structure zone, east-north striked structure zone and south depressed structure zone. West uplifted structure zone and east-north striked structure zone with thinner compartment are easier to form high quality reservoirs and windows for hydrocarbon, whose buried hill hydrocarbon enriched in all of the sag and with a big reverses percentage, while middle reversed structure zone and south depressed structure zone whose buried hill hydrocarbon almost enriched along the sag edges are relatively poor in buried hill hydrocarbon accumulation.