杜84块馆陶组沉积微相特征及沉积模式
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摘要
以沉积学和高分辨率层序地层学理论为指导,在岩心、测井等多项资料的基础上,遵循从点—线—面的沉积微相分析原则,对辽河坳陷杜84块构造区馆陶组的沉积微相类型及特征进行了详细研究。研究表明:杜84块馆陶组属冲积扇,主要发育扇根和扇中两种亚相,共包含7种典型沉积微相。扇根亚相主要发育扇根泥石流、主河道和漫洪微相等3种沉积微相,扇中亚相主要包含扇中泥石流、辫状河道、辫流砂坝和漫流微相等4种沉积微相;物源主要以西部物源为主,从扇根到扇中,河道弯曲度和河道分叉程度增高;地层纵向上,从下部小层到上部小层具有扇根面积变小、漫流沉积变多的沉积特点。
Based on core,well logging and seismic data,and guided by high resolution sequence stratigraphy and classical sedimentology theory,the sedimentary microfacies types and characteristics of Guantao formation in Du-84 block of Liaohe depression were studied in detail according to the principle of point-line-plane sedimentary microfacies analysis.The study showed that Guantao formation in Du-84 block belongs to alluvial fan,which mainly develops fan-root and fan-tip subfacies.Seven kinds of typical sedimentary microfacies have been identified,of which fan-root debris flow,main channel and flood microfacies are developed in fan-root subfacies,and debris flow,braided channel,braided sand bar and overflow microfacies are developed in fan-middle subfacies.From the root to the middle of the fan,the bifurcation degree and the bending degree of the river course becomes higher.In each section of the stratum,the area of the fan root becomes smaller and the overflow deposits become more.
Based on core,well logging and seismic data,and guided by high resolution sequence stratigraphy and classical sedimentology theory,the sedimentary microfacies types and characteristics of Guantao formation in Du-84 block of Liaohe depression were studied in detail according to the principle of point-line-plane sedimentary microfacies analysis.The study showed that Guantao formation in Du-84 block belongs to alluvial fan,which mainly develops fan-root and fan-tip subfacies.Seven kinds of typical sedimentary microfacies have been identified,of which fan-root debris flow,main channel and flood microfacies are developed in fan-root subfacies,and debris flow,braided channel,braided sand bar and overflow microfacies are developed in fan-middle subfacies.From the root to the middle of the fan,the bifurcation degree and the bending degree of the river course becomes higher.In each section of the stratum,the area of the fan root becomes smaller and the overflow deposits become more.
引文
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[15]马成龙.稠油SAGD开发中受效区的判识方法及应用:以辽河西部凹陷曙一区馆陶油藏为例[J].科学技术与工程,2018,18(7):120-127.
[16]张新印,杨荣国.鄂尔多斯盆地延长地区长6油层组沉积古环境分析[J].非常规油气,2018,5(3):29-33.
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[19]CROSS T A.Stratigraphic controls on reservoir attributes in continental strata[J].Earth Science Frontiers,2000,7(4):322-350.
[20]BURNS B A.Fluvial response in a sequence stratigraphic framework:example from the Montserrat fan delta,Spain[J].Journal of Sedimentary Research,1997,67(2):311-321.
[21]卞梅.溱潼凹陷西南斜坡阜三段滩坝沉积特征及模式[J].非常规油气,2018,5(3):25-30.
[2]王勇,钟建华,王志坤,等.柴达木盆地西北缘现代冲积扇沉积特征及石油地质意义[J].地质论评,2007,53(6):791-798.
[3]乔欣,胡煜昭,江小均,等.新疆乌恰萨热克含铜盆地上侏罗统库孜贡苏组复合型冲积扇沉积相研究[J].地质通报,2016,35(11):1884-1894.
[4]古莉,于兴河,万玉金,等.冲积扇相储层沉积微相分析:以吐哈盆地鄯勒油气田第三系气藏为例[J].天然气地球科学,2004,15(1):82-86.
[5]喻宸,吴胜和,岳大力,等.细粒冲积扇沉积特征研究:以酒西盆地老君庙构造带古近系白杨河组为例[J].现代地质,2016,30(3):643-654.
[6]冯文杰,吴胜和,印森林,等.准噶尔盆地西北缘三叠系干旱型冲积扇储层内部构型特征[J].地质论评,2017,63(1):219-233.
[7]伊振林,吴胜和,杜庆龙,等.冲积扇储层构型精细解剖方法以克拉玛依油田六中区下克拉玛依组为例[J].吉林大学学报(自然科学版),2010,40(4):939-946.
[8]宫清顺,黄革萍,倪国辉,等.准噶尔盆地乌尔禾油田百口泉组冲积扇沉积特征及油气勘探意义[J].沉积学报,2010,28(6):1135-1144.
[9]郑占,吴胜和,许长福,等.克拉玛依油田六区克下组冲积扇岩石相及储层质量差异[J].石油与天然气地质,2010,31(4):463-471.
[10]马成龙.特厚层稠油油藏隔夹层识别及应用[J].特种油气藏,2018,25(2):111-115.
[11]张忠义.杜84块馆陶组油层砾岩层识别与分布特征研究[J].特种油气藏,2005,12(2):22-25.
[12]郭建华,朱美衡,杨申谷,等.辽河盆地曙一区馆陶组湿地冲积扇沉积[J].沉积学报,2003,21(3):367-372.
[13]高丹,钟建华,张凌杰,等.永95井冲积扇特征及其石油地质意义[J].特种油气藏,2009,16(2):30-33.
[14]李国永,徐怀民,路言秋,等.准噶尔盆地西北缘八区克下组冲积扇高分辨率层序地层学[J].中南大学学报(自然科学版),2010,41(3):1124-1131.
[15]马成龙.稠油SAGD开发中受效区的判识方法及应用:以辽河西部凹陷曙一区馆陶油藏为例[J].科学技术与工程,2018,18(7):120-127.
[16]张新印,杨荣国.鄂尔多斯盆地延长地区长6油层组沉积古环境分析[J].非常规油气,2018,5(3):29-33.
[17]CARLSTON C W.The relation of free meander geometry to stream discharge and its geomorphic implications[J].American Journal of Science,1965,263(10):864-885.
[18]傅巍.辽河油田杜84块馆陶组隔夹层识别与表征[D].北京:中国地质大学(北京),2014:11-27.
[19]CROSS T A.Stratigraphic controls on reservoir attributes in continental strata[J].Earth Science Frontiers,2000,7(4):322-350.
[20]BURNS B A.Fluvial response in a sequence stratigraphic framework:example from the Montserrat fan delta,Spain[J].Journal of Sedimentary Research,1997,67(2):311-321.
[21]卞梅.溱潼凹陷西南斜坡阜三段滩坝沉积特征及模式[J].非常规油气,2018,5(3):25-30.
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