低井控区沉积体系研究——以辽河西部凹陷葫芦岛–笔架岭东坡为例  

Study on sedimentary system in low well controlled area——by taking Huludao-Bijialing eastern slope in western sag of Liaohe basin as an example

作　　者：刘媛媛[1] LIU Yuanyuan(Exploration & Development Research Institute of Liaohe Oilfield Company,PetroChina,Panjin,Liaoning 124010,China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院

出　　处：《石油地质与工程》2019年第4期1-5,共5页Petroleum Geology and Engineering

基　　金：中国石油天然气股份有限公司重大科技专项“辽河坳陷增储领域地质评价与勘探实践”(2016ZX05006005–002)、“辽河油田千万吨稳产关键技术研究与应用”(2017E–16)

摘　　要：根据地层发育特点,将辽河西部凹陷南段斜坡区划分为笔架岭东坡和葫东斜坡两个构造带,以沉积物形成过程为主线,总结形成“源-渠-汇”体系控制扇体分布的研究方法。首先,明确葫芦岛凸起为渤海湾盆地边缘性凸起的分支,具有持续供源能力;其次,利用地震反射特征在葫东斜坡区识别出若干“U”、“V”型古沟谷,并向盆地方向汇聚成两支主沟道,对应发育两支扇体;笔架岭东坡沙三段沉积期受古地貌控制,物源以北东向为主;最后,利用人工地震相识别方法,在笔架岭东坡识别出楔形反射地震相、上超反射地震相、前积反射地震相、平行反射地震相等类型,并利用有限钻井信息,落实本区沙河街期继承性发育冲积扇-扇三角洲沉积体系。According to the characteristics of stratigraphic development,the slope of the southern section of Liaohe west sag is divided into two structural zones:Bijialing eastern slope and Hudong slope.Taking the sediment formation process as the main line,this paper summarizes the research methods of"source-channelconverge"system to control the distribution of fan body.Firstly,it is clear that Huludao uplift is a branch of marginal uplift in Bohai bay basin and has the ability of continuous source supply.Secondly,several U and V shaped gullies are identified in the Hudong slope area with seismic reflection characteristics,and two main channels are formed in the direction of the basin,corresponding to two fan bodies.The depositional period of the third member of Shahejie formation in Bijialing eastern slope was controlled by paleogeomorphology and the depositional source was mainly from the north to the east.Ultimately,by using the method of artificial seismic phase identification,wedge-shaped reflected seismic phase,super reflected seismic phase,foreintegrating reflected seismic phase and parallel reflected seismic phase are identified in Bijialing eastern slope.By using limited drilling information,the successive development of alluvial fan-fan delta sedimentary system in Shahejie period in this area is made clear.

关 键 词：葫芦岛-笔架岭东坡 源-渠-汇 沟谷识别 地震相 

分 类 号：TE113.3[石油与天然气工程—油气勘探]