孤东油田六区馆上段远源砂质辫状河心滩构型分析
|
摘要
孤东油田馆上段54—68小层为辫状河沉积,储层内部结构复杂。该油田面临综合含水率特高、剩余油高度分散、稳产难度大等问题,开展储层层次结构的精细解剖是解决该问题的关键。为此,以心滩内部的精细构型表征为切入点,通过对砂体内部结构单元的解剖,分析孤东油田六区馆上段远源砂质辫状河心滩构型,以明确砂质辫状河储层内部不同级别的构型特征。采用密井网精细对比的方式,实现了对砂质辫状河心滩内部增生体规模的定量表征;确定了心滩宽度、长度及厚度等4级构型单元的参数范围,其中心滩宽度为100～350 m,长度为400～500 m,厚度为4～12 m;明确了心滩长度与宽度呈正相关,宽度与厚度呈近似正相关。确定了落淤层与增生体等3级构型参数分布特征,落淤层在滩头、滩尾及两翼平均倾角分别为0.93°,0.53°和1.47°,长轴方向的心滩内部单一增生体的长度为280～800 m,宽度为165～400 m,估算落淤层长度为250～700 m,宽度为150～350 m。
The small layers 54-68 in the upper section of Guantao Formation in No.6 Block of Gudong Oilfield are braidedriver deposits that have complex architecture. At present,this oilfield has faced several problems including extra-high wa-ter cut,high distribution of remaining oil,difficulties in stable production. Therefore,the key to solving those problems is tocarry out fine anatomy of the reservoir architecture. The fine architecture characterization of the inner part of the sandybraid bar is taken as the entry point. The internal architecture of the sandy braid bar in the upper section of Guantao Forma-tion in No.6 Block of Gudong Oilfield was analyzed. Combined with the characteristics of sedimentary microfacies of thesandy braided river of Gudong Oilfield,the different hierarchical levels of architecture interfaces in the sandy braided-riverreservoirs were identified. Based on the well correction in dense pattern,the quantitative characterization of the scale of thereproduction body in the braid bar of the braided-river reservoir was realized. The range of parameters for four-grade archi-tecture was determined. Among them,width is 100-350 m,length is 400-500 m,thickness is 4-12 m of the braid bar.Thelength of the braid bar has positive correlation with the width of the braid bar,and the width of the braid has almost positivecorrelation with the thickness of the braid bar. The range of parameters for three-grade architecture of the off-silt and ac-cretion body was determined. The average dip of the off-silt at the head of bar is 0.93° and that at the end is 0.53° and that at two wings is 1.47°,and the length of single accretion body in the braid bar at direction of long axis is from 280 to 800 meters,and its width is from 165 to 400 meters. The width of the the off-silt may be from 250 to 700 meters and its length may be from 150 to 350 meters.
The small layers 54-68 in the upper section of Guantao Formation in No.6 Block of Gudong Oilfield are braidedriver deposits that have complex architecture. At present,this oilfield has faced several problems including extra-high wa-ter cut,high distribution of remaining oil,difficulties in stable production. Therefore,the key to solving those problems is tocarry out fine anatomy of the reservoir architecture. The fine architecture characterization of the inner part of the sandybraid bar is taken as the entry point. The internal architecture of the sandy braid bar in the upper section of Guantao Forma-tion in No.6 Block of Gudong Oilfield was analyzed. Combined with the characteristics of sedimentary microfacies of thesandy braided river of Gudong Oilfield,the different hierarchical levels of architecture interfaces in the sandy braided-riverreservoirs were identified. Based on the well correction in dense pattern,the quantitative characterization of the scale of thereproduction body in the braid bar of the braided-river reservoir was realized. The range of parameters for four-grade archi-tecture was determined. Among them,width is 100-350 m,length is 400-500 m,thickness is 4-12 m of the braid bar.Thelength of the braid bar has positive correlation with the width of the braid bar,and the width of the braid has almost positivecorrelation with the thickness of the braid bar. The range of parameters for three-grade architecture of the off-silt and ac-cretion body was determined. The average dip of the off-silt at the head of bar is 0.93° and that at the end is 0.53° and that at two wings is 1.47°,and the length of single accretion body in the braid bar at direction of long axis is from 280 to 800 meters,and its width is from 165 to 400 meters. The width of the the off-silt may be from 250 to 700 meters and its length may be from 150 to 350 meters.
引文
[1]ALLEN J R L.Studies in fluviatile sedimentation:Bars,bar-complexes and sandstone sheets(low-sinuosity braided streams)in the brownstones(L devonian),welsh borders[J].Sediment Geology,1983,33(4):237-293.
[2]MIALL A D.Architectural-element analysis:A new method of facies analysis applied to fluvial deposits[J].Earth Science Reviews,1985,22(4):261-308.
[3]MIALL A D.Architectural elements and bounding surfaces in fluvial deposits:Anatomy of the Kayenta Formation(Lower Jurassic),South-west Colorado[J].Sedimentary Geology,1988,55(3):233-240.
[4]牛博,高兴军,赵应成,等.古辫状河心滩坝内部构型表征与建模--以大庆油田萨中密井网区为例[J].石油学报,2014,36(1):89-100.NIU Bo,GAO Xingjun,ZHAO Yingcheng,et al.Architecture characterization and modeling of channel bar in paleo-braided river:a case study of dense well pattern area of Sazhong in Daqing oilfield[J].Acta Petrolei Sinica,2014,36(1):89-100.
[5]乔雨朋,邵先杰,接敬涛,等.远源砂质辫状河储层构型及控制因素--以秦皇岛32-6油田为例[J].油气地质与采收率,2016,23(1):46-52.QIAO Yupeng,SHAO Xianjie,JIE Jingtao,et al.Architecture analysis and controlling factor on far source sandy braided river reservoir:A case study of Qinhuangdao 32-6 oilfield[J].Petroleum Geology and Recovery Efficiency,2016,23(1):46-52.
[6]戴启德,狄明信,白光勇,等.孤东油田上第三系馆陶组上段储层非均质模式研究[J].石油大学学报:自然科学版,1996,20(5):1-7.DAI Qide,DI Mingxin,BAI Guangyong,et al.Reservoir heterogeneity model in the upper member of the Neogene Guantao Formation in Gudong oilfield[J].Journal of University of Petroleum,China:Science&Technology Edition,1996,20(5):1-7.
[7]董春梅.基于河水位变化的层序地层模式--以济阳坳陷孤东油田为例[J].石油实验地质,2006,28(3):249-252.DONG Chunmei.The sequence stratigraphic model based on the variance of river level-Take the Gudong Oilfield in the Jiyang Depression as an example[J].Petroleum Geology&Experiment,2006,28(3):249-252.
[8]岳大力,陈德坡,徐樟有,等.济阳坳陷孤东油田曲流河河道储集层构型三维建模[J].古地理学报,2009,11(2):233-240.YUE Dali,CHEN Depo,XU Zhangyou,et al.Channel reservoir architecture3D modeling of meandering fluvial reservoir in Gudong Oilfield,Jiyang Depression[J].Journal of Palaeogeography,2009,11(2):233-240.
[9]王月娥.孤东油田馆陶组上段储层沉积微相及非均质性研究[J].内蒙古石油化工,2013,39(13):121-123.WANG Yuee.Reservoir depositional microfacies and heterogeneity of upper Guantao Formation in Gudong Oilfield[J].Inner Mongolia Petrochemical Industry,2013,39(13):121-123.
[10]崔文福.孤东油田七区西馆上段河流相储层层次结构与剩余油分布研究[D].青岛:中国石油大学(华东),2008.CUI Wenfu.Analysis on reservoir hierarchical structure and remaining oil pattern in the west part of the 7th Block in Gudong oilfield[D].Qingdao:China University of Petroleum(East China),2008.
[11]乔雨朋,邱隆伟,邵先杰,等.辫状河储层构型表征研究进展[J].油气地质与采收率,2017,24(6):34-42.QIAO Yupeng,QIU Longwei,SHAO Xianjie,et al.Research progress on characterization of braided river reservoir architecture[J].Petroleum Geology and Recovery Efficiency,2017,24(6):34-42.
[12]张会卿.辫状河沉积储层内部构型研究在港东一区的应用[J].油气地球物理,2016,14(3):20-24.ZHANG Huiqing.Application of internal architecture of braided river sedimentary reservoir in No.1 area of Gudong Oilfield[J].Petroleum Geophysics,2016,14(3):20-24.
[13]THORNE C R,RUSSELL A P G,ALAM M K.Planform pattern and channel evolution of the Brahmaputra River,Bangladesh[J].Braided Rivers,1993,75(1):257-276.
[14]BRISTOW C S.Sedimentary structures exposed in bar tops in the Brahmaputra River,Bangladesh[J].Braided Rivers,1993,75(1):277-289.
[15]ASHWORTH P J,BEST J L,RODEN J E,et al.Morphological evolution and dynamics of a large,sand braid-bar,Jamuna River,Bangladesh[J].Sedimentology,2000,47(3):533-555.
[16]BEST J L,ASHWORTH P J,BRISTOW C S,et al.Three-dimensional sedimentary architecture of a large,mid-channel sand braid bar,Jamuna River,Bangladesh[J].Journal of Sedimentary Research,2003,73(4):516-530.
[17]廖保方,张为民,李列,等.辫状河现代沉积研究与相模式--中国永定河剖析[J].沉积学报,1998,16(1):34-40.LIAO Baofang,ZHANG Weimin,LI Lie,et al.Study on modern deposit of a braided stream and facies model-Taking the Yongding River as an example[J].Acta Sedimentologica Sinica,1998,16(1):34-40.
[18]余成林,李志鹏,熊运斌,等.心滩储层内部构型分析[J].西南石油大学学报:自然科学版,2012,34(3):19-23.YU Chenglin,LI Zhipeng,XIONG Yunbin,et al.Analysis on internal architecture of batture bar reservoir[J].Journal of Southwest Petroleum University:Science&Technology Edition,2012,34(3):19-23.
[19]LUNT I A,BRIDGE J S,TYE R S.A quantitative,three-dimensional depositionl model of gravelly braided rivers[J].Sedimentology,2004,51:377-414.
[20]刘钰铭,侯加根,王连敏,等.辫状河储层构型分析[J].中国石油大学学报:自然科学版,2009,33(1):7-11,17.LIU Yuming,HOU Jiagen,WANG Lianmin,et al.Architecture analysis of braided river reservoir[J].Journal of China University of Petroleum:Science&Technology Edition,2009,33(1):7-11,17.
[21]张勇,国景星.辫状河心滩特征及其与河道充填的识别--以大芦家地区馆三段为例[J].石油天然气学报,2011,33(10):25-29.ZHANG Yong,GUO Jingxing.Characteristics of channel island in braided river sedimentary facies and difference with channel filling-By Taking Dalujia Ng3in Linpan Oilfield for example[J].Journal of Oil and Gas Technology,2011,33(10):25-29.
[22]张吉,马志欣,王文胜,等.辫状河储层构型单元解剖及有效砂体分布规律[J].特种油气藏,2017,24(2):1-5.ZHANG Ji,MA Zhixin,WANG Wensheng,et al.Dissection of structural units of braided river reservoirs and distribution of effective sandstone formations[J].Special Oil&Gas Reservior,2017,24(2):1-5.
[23]何宇航,宋保全,张春生.大庆长垣辫状河砂体物理模拟实验研究与认识[J].地学前缘,2012,19(2):41-48.HE Yuhang,SONG Baoquan,ZHANG Chunsheng.A study of braided river sand deposit in Changyuan,Daqing through physical simulation experiments[J].Earth Science Frontiers,2012,19(2):41-48.
[24]袁新涛,吴向红,张新征,等.苏丹Fula油田辫状河储层内夹层沉积成因及井间预测[J].中国石油大学学报:自然科学版,2013,37(1):8-12,34.YUAN Xintao,WU Xianghong,ZHANG Xinzheng,et al.Sedimentary origin and interwell prediction of interbeds in braided river reservoir,Fula Oilfield in Sudan[J].Journal of China University of Petroleum:Science&Technology Edition,2013,37(1):8-12,34.
[25]孙天建,穆龙新,吴向红,等.砂质辫状河储层构型表征方法--以苏丹穆格莱特盆地Hegli油田为例[J].石油学报,2014,35(4):715-724.SUN Tianjian,MU Longxin,WU Xianghong,et al.A quantitative method for architectural characterization of sandy braided-river reservoirs:taking Hegli oilfield of Muglad Basin in Sudan as an example[J].Acta Petrolei Sinica,2014,35(4):715-724.
[26]杨少春,赵晓东,钟思瑛,等.辫状河心滩储层内部非均质性及对剩余油分布的影响[J].中南大学学报:自然科学版,2015,46(3):1 066-1 074.YANG Shaochun,ZHAO Xiaodong,ZHONG Siying,et al.Inner heterogeneity within braided bar of braided river reservoir and its influence on remaining oil distribution[J].Journal of Central South University:Science and Technology,2015,46(3):1 066-1 074.
[27]刘海,林承焰,张宪国,等.孔店油田馆陶组辫状河储层构型及剩余油分布规律[J].吉林大学学报:地球科学版,2018,48(3):665-677.LIU Hai,LIN Chengyan,ZHANG Xianguo,et al.Reservoir architecture and remaining oil distribution in braided river of Guantao Formation,Kongdian Oilfield[J].Journal of Jilin University:Earth Science Edition,2018,48(3):665-677.
[2]MIALL A D.Architectural-element analysis:A new method of facies analysis applied to fluvial deposits[J].Earth Science Reviews,1985,22(4):261-308.
[3]MIALL A D.Architectural elements and bounding surfaces in fluvial deposits:Anatomy of the Kayenta Formation(Lower Jurassic),South-west Colorado[J].Sedimentary Geology,1988,55(3):233-240.
[4]牛博,高兴军,赵应成,等.古辫状河心滩坝内部构型表征与建模--以大庆油田萨中密井网区为例[J].石油学报,2014,36(1):89-100.NIU Bo,GAO Xingjun,ZHAO Yingcheng,et al.Architecture characterization and modeling of channel bar in paleo-braided river:a case study of dense well pattern area of Sazhong in Daqing oilfield[J].Acta Petrolei Sinica,2014,36(1):89-100.
[5]乔雨朋,邵先杰,接敬涛,等.远源砂质辫状河储层构型及控制因素--以秦皇岛32-6油田为例[J].油气地质与采收率,2016,23(1):46-52.QIAO Yupeng,SHAO Xianjie,JIE Jingtao,et al.Architecture analysis and controlling factor on far source sandy braided river reservoir:A case study of Qinhuangdao 32-6 oilfield[J].Petroleum Geology and Recovery Efficiency,2016,23(1):46-52.
[6]戴启德,狄明信,白光勇,等.孤东油田上第三系馆陶组上段储层非均质模式研究[J].石油大学学报:自然科学版,1996,20(5):1-7.DAI Qide,DI Mingxin,BAI Guangyong,et al.Reservoir heterogeneity model in the upper member of the Neogene Guantao Formation in Gudong oilfield[J].Journal of University of Petroleum,China:Science&Technology Edition,1996,20(5):1-7.
[7]董春梅.基于河水位变化的层序地层模式--以济阳坳陷孤东油田为例[J].石油实验地质,2006,28(3):249-252.DONG Chunmei.The sequence stratigraphic model based on the variance of river level-Take the Gudong Oilfield in the Jiyang Depression as an example[J].Petroleum Geology&Experiment,2006,28(3):249-252.
[8]岳大力,陈德坡,徐樟有,等.济阳坳陷孤东油田曲流河河道储集层构型三维建模[J].古地理学报,2009,11(2):233-240.YUE Dali,CHEN Depo,XU Zhangyou,et al.Channel reservoir architecture3D modeling of meandering fluvial reservoir in Gudong Oilfield,Jiyang Depression[J].Journal of Palaeogeography,2009,11(2):233-240.
[9]王月娥.孤东油田馆陶组上段储层沉积微相及非均质性研究[J].内蒙古石油化工,2013,39(13):121-123.WANG Yuee.Reservoir depositional microfacies and heterogeneity of upper Guantao Formation in Gudong Oilfield[J].Inner Mongolia Petrochemical Industry,2013,39(13):121-123.
[10]崔文福.孤东油田七区西馆上段河流相储层层次结构与剩余油分布研究[D].青岛:中国石油大学(华东),2008.CUI Wenfu.Analysis on reservoir hierarchical structure and remaining oil pattern in the west part of the 7th Block in Gudong oilfield[D].Qingdao:China University of Petroleum(East China),2008.
[11]乔雨朋,邱隆伟,邵先杰,等.辫状河储层构型表征研究进展[J].油气地质与采收率,2017,24(6):34-42.QIAO Yupeng,QIU Longwei,SHAO Xianjie,et al.Research progress on characterization of braided river reservoir architecture[J].Petroleum Geology and Recovery Efficiency,2017,24(6):34-42.
[12]张会卿.辫状河沉积储层内部构型研究在港东一区的应用[J].油气地球物理,2016,14(3):20-24.ZHANG Huiqing.Application of internal architecture of braided river sedimentary reservoir in No.1 area of Gudong Oilfield[J].Petroleum Geophysics,2016,14(3):20-24.
[13]THORNE C R,RUSSELL A P G,ALAM M K.Planform pattern and channel evolution of the Brahmaputra River,Bangladesh[J].Braided Rivers,1993,75(1):257-276.
[14]BRISTOW C S.Sedimentary structures exposed in bar tops in the Brahmaputra River,Bangladesh[J].Braided Rivers,1993,75(1):277-289.
[15]ASHWORTH P J,BEST J L,RODEN J E,et al.Morphological evolution and dynamics of a large,sand braid-bar,Jamuna River,Bangladesh[J].Sedimentology,2000,47(3):533-555.
[16]BEST J L,ASHWORTH P J,BRISTOW C S,et al.Three-dimensional sedimentary architecture of a large,mid-channel sand braid bar,Jamuna River,Bangladesh[J].Journal of Sedimentary Research,2003,73(4):516-530.
[17]廖保方,张为民,李列,等.辫状河现代沉积研究与相模式--中国永定河剖析[J].沉积学报,1998,16(1):34-40.LIAO Baofang,ZHANG Weimin,LI Lie,et al.Study on modern deposit of a braided stream and facies model-Taking the Yongding River as an example[J].Acta Sedimentologica Sinica,1998,16(1):34-40.
[18]余成林,李志鹏,熊运斌,等.心滩储层内部构型分析[J].西南石油大学学报:自然科学版,2012,34(3):19-23.YU Chenglin,LI Zhipeng,XIONG Yunbin,et al.Analysis on internal architecture of batture bar reservoir[J].Journal of Southwest Petroleum University:Science&Technology Edition,2012,34(3):19-23.
[19]LUNT I A,BRIDGE J S,TYE R S.A quantitative,three-dimensional depositionl model of gravelly braided rivers[J].Sedimentology,2004,51:377-414.
[20]刘钰铭,侯加根,王连敏,等.辫状河储层构型分析[J].中国石油大学学报:自然科学版,2009,33(1):7-11,17.LIU Yuming,HOU Jiagen,WANG Lianmin,et al.Architecture analysis of braided river reservoir[J].Journal of China University of Petroleum:Science&Technology Edition,2009,33(1):7-11,17.
[21]张勇,国景星.辫状河心滩特征及其与河道充填的识别--以大芦家地区馆三段为例[J].石油天然气学报,2011,33(10):25-29.ZHANG Yong,GUO Jingxing.Characteristics of channel island in braided river sedimentary facies and difference with channel filling-By Taking Dalujia Ng3in Linpan Oilfield for example[J].Journal of Oil and Gas Technology,2011,33(10):25-29.
[22]张吉,马志欣,王文胜,等.辫状河储层构型单元解剖及有效砂体分布规律[J].特种油气藏,2017,24(2):1-5.ZHANG Ji,MA Zhixin,WANG Wensheng,et al.Dissection of structural units of braided river reservoirs and distribution of effective sandstone formations[J].Special Oil&Gas Reservior,2017,24(2):1-5.
[23]何宇航,宋保全,张春生.大庆长垣辫状河砂体物理模拟实验研究与认识[J].地学前缘,2012,19(2):41-48.HE Yuhang,SONG Baoquan,ZHANG Chunsheng.A study of braided river sand deposit in Changyuan,Daqing through physical simulation experiments[J].Earth Science Frontiers,2012,19(2):41-48.
[24]袁新涛,吴向红,张新征,等.苏丹Fula油田辫状河储层内夹层沉积成因及井间预测[J].中国石油大学学报:自然科学版,2013,37(1):8-12,34.YUAN Xintao,WU Xianghong,ZHANG Xinzheng,et al.Sedimentary origin and interwell prediction of interbeds in braided river reservoir,Fula Oilfield in Sudan[J].Journal of China University of Petroleum:Science&Technology Edition,2013,37(1):8-12,34.
[25]孙天建,穆龙新,吴向红,等.砂质辫状河储层构型表征方法--以苏丹穆格莱特盆地Hegli油田为例[J].石油学报,2014,35(4):715-724.SUN Tianjian,MU Longxin,WU Xianghong,et al.A quantitative method for architectural characterization of sandy braided-river reservoirs:taking Hegli oilfield of Muglad Basin in Sudan as an example[J].Acta Petrolei Sinica,2014,35(4):715-724.
[26]杨少春,赵晓东,钟思瑛,等.辫状河心滩储层内部非均质性及对剩余油分布的影响[J].中南大学学报:自然科学版,2015,46(3):1 066-1 074.YANG Shaochun,ZHAO Xiaodong,ZHONG Siying,et al.Inner heterogeneity within braided bar of braided river reservoir and its influence on remaining oil distribution[J].Journal of Central South University:Science and Technology,2015,46(3):1 066-1 074.
[27]刘海,林承焰,张宪国,等.孔店油田馆陶组辫状河储层构型及剩余油分布规律[J].吉林大学学报:地球科学版,2018,48(3):665-677.LIU Hai,LIN Chengyan,ZHANG Xianguo,et al.Reservoir architecture and remaining oil distribution in braided river of Guantao Formation,Kongdian Oilfield[J].Journal of Jilin University:Earth Science Edition,2018,48(3):665-677.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |