迈陈凹陷东部构造岩相带描述及勘探方向  

Description of tectonic-lithofacies zone in the east of Maichen Sag and its exploration direction

作　　者：吴峰[1] 刘宏宇[1] 陈伟[1] 成为[1] 陈长征[1] 

机构地区：[1]中国石化江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《复杂油气藏》2013年第4期16-19,共4页Complex Hydrocarbon Reservoirs

基　　金：江苏油田分公司(JS 11006)

摘　　要：迈陈凹陷古近系为南断北超的箕状凹陷。不同的构造带发育不同的沉积体系,迈陈凹陷东部可分为4个构造岩相带。重点区带为斜坡带、南部断裂带和东部断裂带,分别对应北斜坡河流—三角洲、南部单级或多级边界断裂陡坡扇、东部单级边界断裂陡坡扇3个构造岩相带。分析其构造特征、沉积特征及圈闭类型,指出不同构造岩相带下部勘探方向。Maichen Sag in Paleogene is a half graben depression with fault in the south and override in the north. Dif- ferent structural zones developed into different sedimentary systems. And the east of Maichen Sag was divided into four tec- tonic - lithofacies. The major structural zones are slope belt, south fault belt and east fault belt, which respectively corre- sponds to north slope structure fluvial - delta tectonic - lithofacies , the southern single - stage or multi - stage boundary fault steep slope fan tectonic - lithofacies, and the eastern single - stage boundary fault steep slope fan tectonic - lithofa- cies. The sedimentary characteristics, tectonic characteristics and trap type are analysed, and the next - step exploration di- rection in different tectonic -lithofacies is pointed out.

关 键 词：构造岩相带 沉积模式 构造特征 圈闭类型 迈陈凹陷 

分 类 号：P618.130.2[天文地球—矿床学]