新北油田沉积特征及对油气成藏的影响  

Sedimentary characteristics of the Xinbei oilfield and their controls on hydrocarbon accumulation

作　　者：付兆辉[1] 陈发景[1] 李敏[2] 时丕同[3] 闵飞琼[3] 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中国石化胜利油田分公司孤东采油厂,山东东营257237 [3]中国石化胜利油田分公司海洋采油厂,山东东营257237

出　　处：《中国地质》2008年第4期691-698,共8页Geology in China

基　　金：中国石油化工股份有限公司提高采收率导向技术项目(2005-S0-PF0569D010E)资助

摘　　要：新北油田位于渤海湾盆地垦东潜山披覆构造带北部,勘探开发还处于起步阶段。为了解新北油田储层特征、认识油田成藏规律,基于垦东地区勘探的实践,对新北油田的地层特征、沉积特征及油藏特征进行了研究。新北油田沉积体系自下而上为:古近系湖泊相、新近系河流相(辫状河、曲流河和网状河沉积相);辫状河沉积包括心滩(河道砂坝)和河床滞留两种沉积亚相,曲流河沉积包括河道、堤岸、泛滥平原3种沉积亚相,网状河沉积包括泛滥平原和河道两种沉积亚相;曲流河沉积相是新北油田最主要的储集层,边滩、心滩沉积亚相储油物性最好。以上研究结果表明新北油田沉积特征对油气成藏有较强控制作用,油藏类型以岩性油气藏为主。The Xinbei Oilfield, located in the northern part of the Kendong buried-hill drape tectonic zone, Bohai Gulf basin. Its exploration and development are still in the primary phase. In order to know the reservoir characteristics and accumulation rule of the oilfield, based on the exploration and development practice, the stratigraphic characteristics, sedimentary characteristics and reservoir characteristics were studied. The sedimentary system of the oilfield consists in ascending order of Paleogene lacustrine facies and Neogene fluvial facies （including braided stream sediments, meandering fiver sediments and anastomosing fiver sediments）. Braided stream sediments can be subdivided into two subfacies： diara （channel sand bars） and channel floor lag; meandering fiver sediments can be subdivided into three subfacies： channel, bank, and flood plain;and anastomosing fiver sediments can be subdivided into two subfacies： channel and flood plain. The main reservoir of the Xinbei oilfield is meandering river sediments, and the point bar and diara subfacies have the best physical properties for hydrocarbons accumulation. The above research results show strong controlling effects of the sedimentary characteristics On hydrocarbon accumulation. The main reservoir type is the lithologic reservoir.

关 键 词：沉积相 沉积亚相 油气成藏 影响 新北油田 

分 类 号：P618.13[天文地球—矿床学]