准噶尔盆地玛18井区百口泉组基准面旋回及其对砂体的控制
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摘要
三叠系百口泉组是新疆油田的主要储集层之一。应用高分辨率层序地层学基准面旋回原理,依据4口井的岩芯资料、122口井的录井、测井等资料,对准噶尔盆地玛湖西斜坡玛18井区百口泉组各级次基准面旋回界面进行了系统分析,将百口泉组划分为1个长期基准面旋回的上升半旋回、3个中期基准面旋回和18个短期基准面旋回层序。百口泉组下部发育扇三角洲前缘亚相,上部发育前扇三角洲亚相。基准面旋回内砂体特征研究表明:百口泉组底部,可容纳空间增长速率与沉积物供给通量的比值远远小于1 (A/S≤1),水下分流河道砂体大面积连片展布,主要以进积的切叠式为主;百口泉组中部,随着基准面上升,A/S增加,砂体以接触式分布;百口泉组上部,河水动力减弱,河道砂体进一步向后退积,发育远砂坝砂体,砂体以孤立式分布为特征。长期旋回的早中期发育水下分流河道砂体形成了主要的岩性储集砂体;末期湖侵作用形成的湖泛泥岩为油气圈闭提供了良好的盖层。
The Lower Triassic Baikouquan Formation is one of the main reservoirs in the Xinjiang Oilfield. Using the basic principle of base-level cycles of high-resolution sequence stratigraphy, we systematically analyze the evolution of all base-level cycles and high-resolution sequence stratigraphic model in the Baikouquan Formation of the Ma 18 block based on core data of 4 wells, and logging and well-logging data of 122 wells. Results show that one long-term, three medium-term and eighteen short-term base-level cycles were classified. Fan-delta front subfacies change to pro-fan delta subfacies from bottom to top during the Baikouquan period.Based on the analysis of single sand body within the base-level cycles, it is indicated that at the bottom of the Baikouquan Formation,the ratio between the growth rate of the accommodation space and the sediment supply flux is far less than 1.0(A/S ≤ 1). As such,channel sand body distributes contiguously mainly on progradation, and the configuration is in the form of cut-overlay type. In contrast,in the middle of the formation, with the rise of base-level, the ratio of A/S increases and the sand body is distributed by contact. At the upper part, the lacustrine level rises, while dynamic of river is weak. The sand body retrogrades back, and far bar appears. Sand body is distributed separately. Favorable reservoir sand bodies are formed by underwater distributary channel during the mid-early phase of long-termcycle.Thelacustrinemudstonesformedbylatelacustrinetransgressionprovidesgoodcaprocksforhydrocarbontraps.
The Lower Triassic Baikouquan Formation is one of the main reservoirs in the Xinjiang Oilfield. Using the basic principle of base-level cycles of high-resolution sequence stratigraphy, we systematically analyze the evolution of all base-level cycles and high-resolution sequence stratigraphic model in the Baikouquan Formation of the Ma 18 block based on core data of 4 wells, and logging and well-logging data of 122 wells. Results show that one long-term, three medium-term and eighteen short-term base-level cycles were classified. Fan-delta front subfacies change to pro-fan delta subfacies from bottom to top during the Baikouquan period.Based on the analysis of single sand body within the base-level cycles, it is indicated that at the bottom of the Baikouquan Formation,the ratio between the growth rate of the accommodation space and the sediment supply flux is far less than 1.0(A/S ≤ 1). As such,channel sand body distributes contiguously mainly on progradation, and the configuration is in the form of cut-overlay type. In contrast,in the middle of the formation, with the rise of base-level, the ratio of A/S increases and the sand body is distributed by contact. At the upper part, the lacustrine level rises, while dynamic of river is weak. The sand body retrogrades back, and far bar appears. Sand body is distributed separately. Favorable reservoir sand bodies are formed by underwater distributary channel during the mid-early phase of long-termcycle.Thelacustrinemudstonesformedbylatelacustrinetransgressionprovidesgoodcaprocksforhydrocarbontraps.
引文
陈欢庆,赵应成,高兴军,等.2014.高分辨率层序地层学在地层精细划分与对比中的应用--以辽河西部凹陷某试验区于楼油层为例[J].地层学杂志,38(3):317-323.
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何登发,吴松涛,赵龙,等.2018.环玛湖凹陷二叠-三叠系沉积构造背景及其演化[J].新疆石油地质,39(1):35-47
何玉平,刘招君,杜江.2003.高分辨率层序地层学基准面旋回识别[J].世界地质,22(1):21-25.
匡立春,吕焕通,齐雪峰,等.2005.准噶尔盆地岩性油气藏勘探成果和方向[J].石油勘探与开发,32(6):32-37.
匡立春,唐勇,雷德文,等.2014.准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组扇控大面积岩性油藏勘探实践[J].中国石油勘探,19(6):14-23.
雷德文,陈刚强,刘海磊,等.2017.准噶尔盆地玛湖凹陷大油(气)区形成条件与勘探方向研究[J].地质学报,91(7):1604-1619.
李兴,张立强,施辉,等.2016.准噶尔盆地玛湖凹陷百口泉组沉积古环境分析--以玛18井为例[J].岩性油气藏,28(2):80-85.
李祺,陈振林.2009.泌阳凹陷下二门油田三角洲前缘短期基准面旋回构成样式及砂体成因[J].地质科技情报,28(4):15-20.
刘岩,丁晓琪,李学伟.2013.高分辨率层序地层划分在陆相油藏剩余油分布研究中的应用--以克拉玛依油田一东区克拉玛依组为例[J].油气地质与采收率,20(2):15-20.
刘宗堡,吕延防,杨志,等.2009.基于高分辨率层序地层学的大庆长垣南部浅层气分布特征研究[J].地层学杂志,33(4):382-390.
秦国省,胡文瑞,邹存友,等.2018.基准面旋回对冲积扇沉积演化及储层质量的控制作用--以百口泉油田百21井区百口泉组为例[J].油气地质与采收率,25(3):1-10.
孙雨,马世忠,姜洪福,等.2010.松辽盆地三肇凹陷葡萄花油层高频层序地层构型分析[J].地层学杂志,34(4):371-380.
孙雨,张金岩,马世忠,等.2013.扶新隆起带南部扶余油层高分辨率层序地层分析[J].中国石油大学学报(自然科学版),37(4):7-14.
唐勇,徐洋,瞿建华,等.2014.玛湖凹陷百口泉组扇三角洲群特征及分布[J].新疆石油地质,35(6):628-635.
谭聪,于炳松,阮壮,等.2017.四川盆地上三叠统须家河组高分辨率层序地层研究[J].现代地质,31(2):290-301
汤子余,朱锐,李勇.2009.基准面旋回格架内三角洲储集砂体的发育特征--以华池油田华152井区长3油组为例[J].油气地质与采收率,16(4):20-23.
王家林,吴朝东,朱文,等.2016.准噶尔盆地南缘二叠纪-三叠纪构造-沉积环境与原型盆地演化[J].古地理学报,18(4):643-660.
闫海军,贾爱林,郭建林,等.2016.高分辨率层序地层学在储集层精细描述中的应用[J].新疆石油地质,37(1):29-35.
袁晓光,李维锋,张宝露,等.2015.玛北斜坡百口泉组沉积相与有利储层分布[J].特种油气藏,22(4):70-73.
张磊夫,吴陈君,苏洋,等.2017.爱尔兰克莱尔盆地Ross Sandstone组深水浊积岩露头高分辨率层序地层学[J].石油与天然气地质,38(1):165-174.
郑荣才,彭军,吴朝容.2001.陆相盆地基准面旋回级次划分与研究意义[J].沉积学报,19(2):249-255.
郑荣才,尹世民,彭军.2000.基准面旋回结构与叠加样式的沉积动力学分析[J].沉积学报,18(3):369-375.
Maill A D.1988.Architecture element and bounding surface in fluvial deposits of Kayenta formation(Lower Jurassic)Southwest Colorado[J].Sedimentary Geology,55:233-262.
Maill A D.1994.Reconstructing fluvial macroform architecture from two-dimensional outcrops examples from the Castlegate sandstone,Book Cliffs,Utah[J].Journal of Sedimentary Research,64(2):146-158.
Brian P C and Fred J R.2002.High-resolution sequence stratigraphy in Tertiary carbonate-rich sections by thin-sectioned well cut-tings[J].AAPG Bulletin,86(18):1407-1415.
Cross T A.2000.Stratigraphic controls on reservoir attributes in continental strata[J].Earth Science Frontiers,7(4):322-350.
Davies R,Howell J,Boyd R,et al.2006.High-resolution sequence-stratigraphic correlation between shallow-marine and terrestrial strata:Examples fromthe Sunnyside Member of the Cretaceous black hawk Formation,Book Cliffs,eastern Utah[J].AAPG Bulletin,90(7):1121-1140.
邓宏文.1995.美国层序地层研究中的新学派--高分辨率层序地层学[J].石油与天然气地质,16(2):89-97.
何登发,吴松涛,赵龙,等.2018.环玛湖凹陷二叠-三叠系沉积构造背景及其演化[J].新疆石油地质,39(1):35-47
何玉平,刘招君,杜江.2003.高分辨率层序地层学基准面旋回识别[J].世界地质,22(1):21-25.
匡立春,吕焕通,齐雪峰,等.2005.准噶尔盆地岩性油气藏勘探成果和方向[J].石油勘探与开发,32(6):32-37.
匡立春,唐勇,雷德文,等.2014.准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组扇控大面积岩性油藏勘探实践[J].中国石油勘探,19(6):14-23.
雷德文,陈刚强,刘海磊,等.2017.准噶尔盆地玛湖凹陷大油(气)区形成条件与勘探方向研究[J].地质学报,91(7):1604-1619.
李兴,张立强,施辉,等.2016.准噶尔盆地玛湖凹陷百口泉组沉积古环境分析--以玛18井为例[J].岩性油气藏,28(2):80-85.
李祺,陈振林.2009.泌阳凹陷下二门油田三角洲前缘短期基准面旋回构成样式及砂体成因[J].地质科技情报,28(4):15-20.
刘岩,丁晓琪,李学伟.2013.高分辨率层序地层划分在陆相油藏剩余油分布研究中的应用--以克拉玛依油田一东区克拉玛依组为例[J].油气地质与采收率,20(2):15-20.
刘宗堡,吕延防,杨志,等.2009.基于高分辨率层序地层学的大庆长垣南部浅层气分布特征研究[J].地层学杂志,33(4):382-390.
秦国省,胡文瑞,邹存友,等.2018.基准面旋回对冲积扇沉积演化及储层质量的控制作用--以百口泉油田百21井区百口泉组为例[J].油气地质与采收率,25(3):1-10.
孙雨,马世忠,姜洪福,等.2010.松辽盆地三肇凹陷葡萄花油层高频层序地层构型分析[J].地层学杂志,34(4):371-380.
孙雨,张金岩,马世忠,等.2013.扶新隆起带南部扶余油层高分辨率层序地层分析[J].中国石油大学学报(自然科学版),37(4):7-14.
唐勇,徐洋,瞿建华,等.2014.玛湖凹陷百口泉组扇三角洲群特征及分布[J].新疆石油地质,35(6):628-635.
谭聪,于炳松,阮壮,等.2017.四川盆地上三叠统须家河组高分辨率层序地层研究[J].现代地质,31(2):290-301
汤子余,朱锐,李勇.2009.基准面旋回格架内三角洲储集砂体的发育特征--以华池油田华152井区长3油组为例[J].油气地质与采收率,16(4):20-23.
王家林,吴朝东,朱文,等.2016.准噶尔盆地南缘二叠纪-三叠纪构造-沉积环境与原型盆地演化[J].古地理学报,18(4):643-660.
闫海军,贾爱林,郭建林,等.2016.高分辨率层序地层学在储集层精细描述中的应用[J].新疆石油地质,37(1):29-35.
袁晓光,李维锋,张宝露,等.2015.玛北斜坡百口泉组沉积相与有利储层分布[J].特种油气藏,22(4):70-73.
张磊夫,吴陈君,苏洋,等.2017.爱尔兰克莱尔盆地Ross Sandstone组深水浊积岩露头高分辨率层序地层学[J].石油与天然气地质,38(1):165-174.
郑荣才,彭军,吴朝容.2001.陆相盆地基准面旋回级次划分与研究意义[J].沉积学报,19(2):249-255.
郑荣才,尹世民,彭军.2000.基准面旋回结构与叠加样式的沉积动力学分析[J].沉积学报,18(3):369-375.
Maill A D.1988.Architecture element and bounding surface in fluvial deposits of Kayenta formation(Lower Jurassic)Southwest Colorado[J].Sedimentary Geology,55:233-262.
Maill A D.1994.Reconstructing fluvial macroform architecture from two-dimensional outcrops examples from the Castlegate sandstone,Book Cliffs,Utah[J].Journal of Sedimentary Research,64(2):146-158.
Brian P C and Fred J R.2002.High-resolution sequence stratigraphy in Tertiary carbonate-rich sections by thin-sectioned well cut-tings[J].AAPG Bulletin,86(18):1407-1415.
Cross T A.2000.Stratigraphic controls on reservoir attributes in continental strata[J].Earth Science Frontiers,7(4):322-350.
Davies R,Howell J,Boyd R,et al.2006.High-resolution sequence-stratigraphic correlation between shallow-marine and terrestrial strata:Examples fromthe Sunnyside Member of the Cretaceous black hawk Formation,Book Cliffs,eastern Utah[J].AAPG Bulletin,90(7):1121-1140.