摘要
刘官庄地区新近系馆陶组是黄骅坳陷歧南次凹的重要油气储层。利用岩心、测井、录井和地震等数据信息,探讨研究区馆陶组三段(馆三段)河流相的辫状河—曲流河(辫—曲)微相沉积特征及控制因素。结果表明:刘官庄地区馆三段共识别块状层理砾岩相、槽状交错层理砾岩相、板状交错层理砂岩相、平行层理砂岩相、块状层理砂岩相、槽状交错层理砂岩相、块状层理泥岩相7种岩相类型;测井曲线主要表现为箱形、钟形、箱形—钟形组合、指形、线形5类;发育辫状河道、心滩坝、泛滥平原、曲流河道、点坝、漫溢砂6种沉积微相;研究区馆三段垂向呈“先辫后曲”、平面呈“东辫西曲、南辫北曲”的特点;辫状河砂体垂向心滩坝发育,河道频繁侵蚀、沉积,二者多期叠置成大型复合砂体并构成馆三段的主力储层,曲流河垂向砂体孤立发育,横向连续性较差。研究区河型转换控制因素中,靠近古隆起的充足物源供给和构造作用形成较陡的地形坡度,二者构成的物坡控砂效应影响馆三段早期辫状河的沉积和中后期辫状河向曲流河的转换;古气候影响下的古环境从湿润向干燥的转变及基准面旋回上升二者耦合,对辫—曲的转换起辅助作用。该结果对厘清刘官庄油田河流相储层形成因素、指导同类型油气勘探开发具有指导意义。
Neogene Guantao Formation in Liuguanzhuang Area is an important oil and gas reservoir in Qi'nan Sub Sag of Huanghua Depression.Using core,logging and seismic data,we discussed the sedimentary characteristics and controlling factors of braided river meandering river microfacies of fluvial facies in the third member of Guantao Formation in the target area.The results show that there are seven lithofacies types in the third member of Guantao Formation in Liuguanzhuang Area,including massive bedding conglomerate facies,trough cross bedding conglomerate facies,plate cross bedding sandstone facies,parallel bedding sandstone facies,massive bedding sandstone facies,trough cross bedding sandstone facies and massive mudstone.The logging curves are mainly box-shaped,bell-shaped,box-and-bell-shaped,finger-shaped and linear-shaped.There are 6 sedimentary microfacies:braided channel,central beach bar,flood plain,meandering channel,point bar and overflow sand.The third member of Guansan Section in the target area is characterized by vertical"braiding first and then warping",horizontal"east braiding west warping,south braiding north warping".Braided river sand bodies are developed in the vertical center beach bar,and the river channel is frequently eroded and deposited.They are superimposed into large composite sand bodies in multiple stages and form the main reservoir of Guan 3 Member.Meandering river vertical sand bodies are developed in isolation and are poor in horizontal continuity.Among the controlling factors of river type transformation in the study area,the sufficient material source supply close to the paleouplift and tectonic action form a steep topographic slope.The sand control effect of the material slope formed by them affects the deposition of braided river in the early stage of Guan 3 Member and the transformation from braided river to meandering river in the middle and late stage.The change of paleoenvironment from humid to dry and the rise of base level cycle under the influence of paleoclimate are coupled,which plays an auxiliary role in the transformation of braid meander.The results are of great significance to clarify the formation factors of fluvial reservoir in Liuguanzhuang Oilfield and may serve as guidance in the exploration and development of this type of oil and gas.
作者
赵一波
李胜利
周练武
马水平
黄晓娣
韩波
杨龙庆
李宁
常可
ZHAO Yibo;LI Shengli;ZHOU Lianwu;MA Shuiping;HUANG Xiaodi;HAN Bo;YANG Longqing;LI Ning;CHANG Ke(School of Energy,China University of Geosciences(Beijing),Beijing 100083,China;Oil Recovery Plant No.2 of PetroChina Dagang Oilfield,Cangzhou,Hebei 061103,China)
出处
《东北石油大学学报》
CAS
北大核心
2022年第1期14-25,I0002,共13页
Journal of Northeast Petroleum University
基金
国家自然科学基金项目(42172112)
国家自然科学基金项目(41572080)。
关键词
刘官庄油田
馆陶组三段
辫状河—曲流河转换
近源河流沉积
物坡效应
黄骅坳陷
埕宁隆起
Liuguanzhuang Oilfield
the third member of Guantao Formation
meander-braided transition
near source fluvial deposits
slope effect
Huanghua Depression
Chengning Uplift
