黄骅坳陷北部马头营凸起馆陶组砂体成因及展布特征

发布时间：2018-03-04 18:17

本文选题：冲积扇-辫状河-曲流河　切入点：高分辨率层序地层　出处：《吉林大学学报(地球科学版)》2017年01期 　论文类型：期刊论文

【摘要】：综合运用钻井岩心、测井、三维高分辨率地震等资料,对渤海湾盆地黄骅坳陷北部马头营凸起馆陶组砂体成因及展布特征进行了系统的研究。结果表明:馆陶组沉积前期发育2条规模大、延伸较远,呈近NS、NNW—SSE展布的沟槽,指示物源主要来源于北部燕山褶皱带。馆陶组为冲积扇-辫状河-曲流河沉积序列;馆三下段为冲积扇扇中辫状河道和河道间漫流相,发育扇中辫状河道成因砂体;馆三上段为辫状河道和泛滥平原相,发育河床滞留沉积和心滩成因砂体;馆二段和馆一段为曲流河沉积,河床滞留沉积、边滩、决口扇和天然堤是主要的砂体成因类型。馆陶组可划分为3个长期旋回,7个中期旋回,16~19个短期旋回;以短期旋回为单元,建立了馆二段等时地层对比的高分辨层序地层格架;层序格架控制着砂体的分布模式,馆二段短期旋回的下部砂岩发育,是主要的储集层。层控测井约束反演提高了馆二段薄互层河道砂体预测的精度,馆二段各砂层组反演预测平面砂地比反映河道砂体呈NE—SW向的展布特征。
[Abstract]:Comprehensive use of drilling core, logging, 3D high-resolution seismic data, The sandbody genesis and distribution characteristics of Guantao formation in the northern Matouying uplift of Huanghua depression in Bohai Bay basin are systematically studied. The results show that the Guantao formation developed two large scale and extended channels near NSN NW-SSE in the early sedimentary stage of Guantao formation. The indicator source mainly comes from the Yanshan fold belt in the north. The Guantao formation is a sedimentary sequence of alluvial fan braided river and meandering river, and the lower member of Guantao is the braided channel and interchannel diffuse facies in the alluvial fan, and the sandbody of braided channel is developed in the fan. The upper member of Guanshan is braided river channel and flood plain facies, which has developed riverbed retention deposit and core beach origin sand body, and Guan2 and Guan1 section are meandering river deposits, riverbed retention deposits, banks, etc. Guantao formation can be divided into 3 long term cycles, 7 mid cycle 1619 short term cycles, taking short term cycle as unit, the high resolution sequence stratigraphic framework of isochronous stratigraphic correlation of Guantao formation is established. Sequence framework controls the distribution pattern of sand body, and the sandstones in the lower part of Guan2 member are the main reservoir. The prediction accuracy of channel sand body in thin interbed bed of Guan2 member is improved by the constrained inversion of stratigraphic logging. The inversion prediction of each sand formation in the second member of Guanshan reflects the distribution of channel sand bodies in NE-SW direction.
【作者单位】：中国石油冀东油田公司勘探开发研究院;
【基金】：国家科技重大专项(2016ZX05006-006)~~
【分类号】：P618.13

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