渤海湾盆地济阳坳陷北部石炭系—二叠系残留地层沉积相
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第23卷第3期 古地 理学报
Vol. 23 No. 3
2021 年 6 月 JOURNAL OF PALAEOGEOGRAPHY (Chinese Editioo
) Jun. 2021
文章编号:
1671-1505 (
2021)
03-0525-14 DOI:
10.7605/gdlxb.2021.03.029
渤海湾盆地济阳坳陷北部石炭系一二叠系
残留地层沉积相
*
*中国一东盟海上合作基金项目(编号:
121201050017001)、国家自然科学基金项目(编号:
4137218)共同资助。[
by
Chioa-ASEAN Maritime Coperation Fund Project (No. 12120100500017001
) and ths Natiood Natural Science Foundation of Chioa ( No. 4137218)]
收稿日期:
2020-04-20 改回日期:
2220-07-07杨仁超
1李 阳
1汪 勇
2李文厚
3赵永福
2
1
山东科技大学地球科学与工程学院,山东青岛266590
2
中国石化胜利油田勘探管理中心,山东东营2/7022
3
西北大学地质学系,陕西西安710069
摘要渤海湾盆地济阳坳陷北部石炭系一二叠系残留地层为近年来该地区油气勘探的重点领域。为明确
古潜山储集层沉积相带与砂体展布规律,在地层划分对比的基础上,依据测井曲线、沉积构造、岩性特征及沉
积序列等资料,对济阳坳陷北部石炭系一二叠系古潜山区沉积特征进行了系统研究。结果发现:(1)古潜山区
石炭系一二叠系残留地层厚度变化很大,石千峰组被剥蚀殆尽;(2)石炭纪一二叠纪研究区经历了海陆交互相
—海陆过渡相T河流相的演化过程,其中本溪组及太原组沉积时期研究区发育潟湖、潮坪及障壁岛相,山西组沉
积时期发育三角洲相,以三角洲平原亚相为主,可识别出分流河道、分流河道间、天然堤及泥炭沼泽等微相,
而上、下石盒子组沉积时期以辫状河沉积为主,可进一步划分为心滩、河床滞留沉积及泛滥平原微相;(3)受
沉积环境演化的控制,本溪组一太原组的砂体呈斑块状展布,山西组和上、下石盒子组的砂体呈近北东一南西
向条带状展布。对济阳坳陷北部潜山区沉积相与砂体展布规律的研究,为该古潜山区的油气勘探提供了关键地
质依据。
关键词 渤海湾盆地济阳坳陷 石炭系 二叠系 残留地层沉积相砂体展布
第一作者简介 杨仁超,男,1977年生,博士,教授,博士生导师,长期从事沉积学与油气地质学教学与
研究。E-mail: ******************。
中图分类号:P/31 文献标志码:A
开放科学(资源服务)标识码(OSID
)
Sedimentary facies of the Carboniferous-Permian residual strata
in northern Jiyang Depression, Bohaf Bay Basie
Yaae Res-Chao
1 Lt Yaag
1 Ware Yoog
2 Lt Wes-Hoo
3 Zhao Yoog-Fu
2
1 College of Earth Science and Engineering ,
Shandong University of Science and Technology ,
Qingdao 266590,
China
2 Explorahoa and Maaagement Cechs, Siaogre ShengU OHfielO,
ShaaCoog Doogying 257722 ,
Chiaa
3 Denaament of Geology, Northwest University, Xiaa 710069 ,
China
Abstroci Ths Carboniferous-Permiaa resitual strata io ths eorthern Jiyyag Depression of ths Bohai
Bay Basin has become ooe of ths key anas foe oil aad gas explorahoo in ncost yean. In orbst th clesrly
understaad thy distrifuhoe chanctebshcs of sepimextarn facics aad sad body in aaciext buriep hill
oeset-526古地理学报
2021 年 6 月
voir, the sedimentary characteristics of the Carboniferous - Permian in the northern Jiyang Depression of
Bohai Bny Bnsin hnvv been systematicaCy studied based on the stbtiyyphic division and coirelahon, well
logs, sedimentary strnctures , litholony and sedimentary sequenchs. Results show that the thichness of the
Carboniferons-Permian strath in thn bcbed hill aren has chanyed rapidly , and thn Shiqianfenn Formation
have been eroned. Dcrinf the Carboniferons - Permian pebon , the study aree undenvent the
evvlution pmcess of altematinn chntinent-marine facies , chntinenUmanne transitional facies and rivve
facies. Dcriny the Benxi and Taiyuan Formations dedositional perion , the laaoon , tinal aai and barrier
island facies devvloped in the stuty aree. The delta facies devvloped in the Shanxi Formation denositional
perion , and e
: was mainly characterized as the delta plain deposits , which can medtim the detailed fccies
such as distrinutam channel, ixternistrinutam channel, natcral levve and pept swamp. Dcrinx the Upper
and Lower Shihezi Formations , brained rivvi' fccies was the dominated sedimedtam fccies and it was divin
ed inte channel bae , channel lag deposim and floonplain microfacies. The sand bonies in the Benxi and
Taiyuan Formations are spotted distrinuted undeo crntml of the evvlution of senimentam envimnment. The
sand bonies of Shanxi Formation , the Lower and Upper Shihezi Formation are distrinuted in a banded strin
near NE te SW direction. The stuUies on the sedimentara fccies and distrinution law of sand bonies in the
buried hiHs of the northera Jiyany Denression can provine key yeelopicrl basis C
u oit and yas exploration in
the ancient buried hills.
Key words Bohai Bay Basin , Jiyany Denression , Camonifemns , Permian , msinual strate ,
86X06
x1:30 facies , distrinution of sand bonies
About the first author Yany Ren-Chao , born in 1976 , professor , is mainly encaned in mseem
ches on 36X06
x1:0100;, and petmlenm 06
x100,. E-mah: yan-l00808@126.chm.
近年来,渤海湾盆地济阳坳陷石炭系一二叠系
古潜山的油气勘探持续取得重大突破(杜玉民等,
2003
;翟光明和何文渊,2003
;李孝军等,2005
;
李文涛,2011
),表明其具有巨大的油气勘探前
景,但济阳坳陷古潜山地质条件较为复杂(Su
et al., 2009
;隋风贵等,2013
;李理和钟大赉,
2018
),发育大量断层,且遭受多期次构造抬升剥
蚀,地层保存不完整(王颖等,2002
;缪九军等,
2008
;王惠勇等,2015
),沉积相带分布规律尚不
明确,认识上还存在较大争议(曹忠祥等,2002
;
王玉林,2003
;韩会军等,2007
;张关龙等,
2009
),从而增加了济阳坳陷石炭系一二叠系古潜
山的勘探难度。沉积相特征与海侵作用及物源区位
置等密切相关,济阳坳陷石炭纪一二叠纪发生多次
海侵作用,海水从东南部灌入,进入济阳坳陷后沿
从南到北、由东向西方向侵入,且由于坳陷北部更
靠近北部阴山造山带物源区(张关龙等,2009
;
Zhang et al., 2014
),这导致济阳坳陷南部和北部的
石炭系一二叠系沉积相特征具有一定差异。依据沉
积构造、岩性、测井曲线特征及岩心观测,结合前人研究成果,对渤海湾盆地济阳坳陷北部石炭系一
二叠系进行地层对比研究,确定沉积相类型,建立
沉积模式,以期对济阳坳陷古潜山储集层预测及油
气勘探提供参考。
1地质概况
济阳坳陷位于渤海湾盆地东南隅,是渤海湾盆
地的次一级构造单元(图1-A
),面积约26 000 km2
,
为中国第二大油气产区,勘探潜力巨大(王世虎等,
2204
;曹忠祥等,2016
;宋明水等,2019
)。济阳坳
陷主要由沾化凹陷、惠民凹陷、东营凹陷和车镇凹
陷以及陈家庄凸起、孤岛凸起等若干凸起构造单元
组成(图1-B
)。
研究区位于济阳坳陷北部,东临孤岛凸起,北
靠埕子口凸起,西北为义和庄凸起,南邻陈家庄凸
起,主要由渤南洼陷及郭局子洼陷部分地区组成,
分布面积约为2400 km2
。区内发育埕东、孤北、义
东、孤西、桩西断层等5
条主要断层,并以埕东断
层及义东断层作为沾化凹陷和车镇凹陷的分界(彭
传圣,2205
;林武等,2207
)(图1-C
)
。