鄂尔多斯盆地志丹油区长6油层组油气富集主控因素研究
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摘要
从烃源条件、沉积相展布、储层物性以及构造特征等方面入手,研究了鄂尔多斯盆地志丹油区长6油层组油气富集的主控因素,对本区开发实践具有一定指导意义。研究表明,志丹油区处于优质烃源岩主要发育区,张家滩页岩广泛发育,有机质丰度高,生烃母质类型较好,且生烃增压作用显著,为长6油藏的形成提供了重要的物质基础和运移动力;同时,沉积相以三角洲前缘沉积为主,河口坝砂体发育,孔隙类型以粒间孔为主,沉积环境与储层物性对油气分布起到重要的控制作用,含油面积分布主要集中在河道砂体厚、物性较好的区域;此外,大型低幅度鼻状隆起构造发育,为油气成藏提供有利场所,油厚中心主要集中于鼻状构造上或其侧翼。
The main controlling factors of hydrocarbon accumulation of Chang-6 oil-bearing formation in Zhidan oil region is studied from the following aspects in this paper:hydrocarbon source conditions,facies distribution,reservoir physical properties,and structural features.Research showed that Zhidan oil region located in the main development area of high-quality hydrocarbon source rocks,Zhangjiatan shales widely developed in this area with high abundance of organic matter,appropriate kerogen type and significant pressurization during hydrocarbon generation,which provided important material base and migration motive force for Chang-6 reservoirs;Simultaneously,the sedimentary facies are dominated by delta front sediments with excellent channel mouth bar sands,which main pore types is intergranular pore.In this way,sedimentary environment and reservoir physical properties play important roles in controlling the distribution of oil and gas.The oil-bearing area is mainly concentrated in these areas with thick sand bodies and good physical properties.Furthermore,the large-scale low-amplitude nose-like structures extensively developed in this area,which provided favorable traps for hydrocarbon accumulation,and the center of oil thickness is mainly concentrated in the nose-like structures or its flanks.
The main controlling factors of hydrocarbon accumulation of Chang-6 oil-bearing formation in Zhidan oil region is studied from the following aspects in this paper:hydrocarbon source conditions,facies distribution,reservoir physical properties,and structural features.Research showed that Zhidan oil region located in the main development area of high-quality hydrocarbon source rocks,Zhangjiatan shales widely developed in this area with high abundance of organic matter,appropriate kerogen type and significant pressurization during hydrocarbon generation,which provided important material base and migration motive force for Chang-6 reservoirs;Simultaneously,the sedimentary facies are dominated by delta front sediments with excellent channel mouth bar sands,which main pore types is intergranular pore.In this way,sedimentary environment and reservoir physical properties play important roles in controlling the distribution of oil and gas.The oil-bearing area is mainly concentrated in these areas with thick sand bodies and good physical properties.Furthermore,the large-scale low-amplitude nose-like structures extensively developed in this area,which provided favorable traps for hydrocarbon accumulation,and the center of oil thickness is mainly concentrated in the nose-like structures or its flanks.
引文
[1]杨华,刘显阳,张才利,等.鄂尔多斯盆地三叠系延长组低渗透岩性油藏主控因素及其分布规律[J].岩性油气藏,2007,19(3):1-6.
[2]赵靖舟,白玉彬,曹青,等.鄂尔多斯盆地准连续型低渗透-致密砂岩大油田成藏模式[J].石油与天然气地质,2012,33(6):811-827.
[3]白玉彬,赵靖舟,方朝强,等.鄂尔多斯盆地长6油层组准连续型致密砂岩油藏形成机理[J],石油实验地质,2013,35(1):65-71.
[4]郭彦如,刘俊榜,杨华,等.鄂尔多斯盆地延长组低渗透致密岩性油藏成藏机理[J].石油勘探与开发,2012,39(4):417-425.
[5]姜培海,张政,唐衔,等.非常规油气聚集主控因素及油气富集综合分析[J].非常规油气,2017,4(3):110-118.
[6]董丽红,安思谨,王变阳.鄂尔多斯盆地三叠系延长组长7、长9油页岩分布特征与油气富集关系[J].非常规油气,2014,1(1):17-21.
[7]罗晓容,王忠楠,雷裕红,等.特超低渗砂岩油藏储层非均质性特征与成藏模式——以鄂尔多斯盆地西部延长组下组合为例[J].石油学报,2016,37(S1):87-98.
[8]姚泾利,赵彦德,邓秀芹,等.鄂尔多斯盆地延长组致密油成藏控制因素[J].吉林大学学报(地球科学版),2015,45(4):983-992.
[9]王芳,何涛,梁晓伟,等.鄂尔多斯盆地伊陕斜坡延长组东、西成藏差异[J].岩性油气藏,2010,22(4):68-71.
[10]陈贺贺,朱筱敏,陈纯芳,等.鄂尔多斯盆地彬长区块延长组生储盖组合与油气富集特征[J].岩性油气藏,2016,28(2):56-63.
[11]王昌勇,郑荣才,王成玉,等.鄂尔多斯盆地姬塬地区延长组中段岩性油藏成藏规律研究[J].岩性油气藏,2010,22(2):84-89.
[12]刘伟刚,周立发,高淑静.鄂尔多斯盆地中西部三叠系延长组裂缝特征研究[J].岩性油气藏,2012,24(6):66-71.
[13]邓南涛,任来义,贺永红,等.鄂尔多斯盆地南部延长组有效烃源岩分布规律研究[J].非常规油气,2015,2(1):28-34.
[14]杨华,张文正.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
[15]张杰.鄂尔多斯盆地志丹地区三叠系延长组致密油烃源岩及成藏动力研究[D].西安:西安石油大学,2016:15.
[16]邱欣卫,刘池洋.鄂尔多斯盆地延长期湖盆充填类型与优质烃源岩的发育[J].地球学报,2014,35(1):101-110.
[17]杨华,张文正,刘显阳,等.优质烃源岩在鄂尔多斯低渗透富油盆地形成中的关键作用[J].地球科学与环境学报,2013,35(4):1-9.
[18]李元昊,张铭记,王秀娟,等.鄂尔多斯盆地西北部上三叠统延长组复合油藏成藏机理[J].岩性油气藏,2010,22(2):32-36.
[19]李添渊.鄂尔多斯盆地志丹地区长7烃源岩特征评价[J].非常规油气,2017,4(1):23-29.
[20]王香增,高潮.鄂尔多斯盆地南部长7陆相泥页岩生烃过程研究[J].非常规油气,2014,1(1):2-11.
[21]蔺宏斌,侯明才,陈洪德,等.鄂尔多斯盆地上三叠统延长组沉积体系特征及演化[J].成都理工大学学报(自然科学版),2008,35(6):674-680.
[22]王建民.陕北志丹地区长6—长2油层组水退型三角洲沉积演化特征[J].石油勘探与开发,2008,35(2):182-187.
[23]冯永春,王建民.鄂尔多斯盆地志丹油田永金地区长6储层微观孔隙成因类型及特征[J].岩性油气藏,2008,20(4):47-52.
[24]王变阳,贺永红,王康乐,等.鄂尔多斯盆地定边-安塞地区延长组下组合储层特征[J].岩性油气藏,2014,26(6):64-68.
[25]王建民,王佳媛.鄂尔多斯盆地伊陕斜坡上的低幅度构造与油气富集[J].石油勘探与开发,2013,40(1):49-57.
[26]张凤奇,王震亮,武富礼,等.低渗透致密砂岩储层成藏期油气运移的动力分析[J].中国石油大学学报(自然科学版),2012,36(4):32-38.
[27]白玉彬,赵靖舟,方朝强,等.优质烃源岩对鄂尔多斯盆地延长组石油聚集的控制作用[J].西安石油大学学报(自然科学版),2012,27(2):1-5.
[2]赵靖舟,白玉彬,曹青,等.鄂尔多斯盆地准连续型低渗透-致密砂岩大油田成藏模式[J].石油与天然气地质,2012,33(6):811-827.
[3]白玉彬,赵靖舟,方朝强,等.鄂尔多斯盆地长6油层组准连续型致密砂岩油藏形成机理[J],石油实验地质,2013,35(1):65-71.
[4]郭彦如,刘俊榜,杨华,等.鄂尔多斯盆地延长组低渗透致密岩性油藏成藏机理[J].石油勘探与开发,2012,39(4):417-425.
[5]姜培海,张政,唐衔,等.非常规油气聚集主控因素及油气富集综合分析[J].非常规油气,2017,4(3):110-118.
[6]董丽红,安思谨,王变阳.鄂尔多斯盆地三叠系延长组长7、长9油页岩分布特征与油气富集关系[J].非常规油气,2014,1(1):17-21.
[7]罗晓容,王忠楠,雷裕红,等.特超低渗砂岩油藏储层非均质性特征与成藏模式——以鄂尔多斯盆地西部延长组下组合为例[J].石油学报,2016,37(S1):87-98.
[8]姚泾利,赵彦德,邓秀芹,等.鄂尔多斯盆地延长组致密油成藏控制因素[J].吉林大学学报(地球科学版),2015,45(4):983-992.
[9]王芳,何涛,梁晓伟,等.鄂尔多斯盆地伊陕斜坡延长组东、西成藏差异[J].岩性油气藏,2010,22(4):68-71.
[10]陈贺贺,朱筱敏,陈纯芳,等.鄂尔多斯盆地彬长区块延长组生储盖组合与油气富集特征[J].岩性油气藏,2016,28(2):56-63.
[11]王昌勇,郑荣才,王成玉,等.鄂尔多斯盆地姬塬地区延长组中段岩性油藏成藏规律研究[J].岩性油气藏,2010,22(2):84-89.
[12]刘伟刚,周立发,高淑静.鄂尔多斯盆地中西部三叠系延长组裂缝特征研究[J].岩性油气藏,2012,24(6):66-71.
[13]邓南涛,任来义,贺永红,等.鄂尔多斯盆地南部延长组有效烃源岩分布规律研究[J].非常规油气,2015,2(1):28-34.
[14]杨华,张文正.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
[15]张杰.鄂尔多斯盆地志丹地区三叠系延长组致密油烃源岩及成藏动力研究[D].西安:西安石油大学,2016:15.
[16]邱欣卫,刘池洋.鄂尔多斯盆地延长期湖盆充填类型与优质烃源岩的发育[J].地球学报,2014,35(1):101-110.
[17]杨华,张文正,刘显阳,等.优质烃源岩在鄂尔多斯低渗透富油盆地形成中的关键作用[J].地球科学与环境学报,2013,35(4):1-9.
[18]李元昊,张铭记,王秀娟,等.鄂尔多斯盆地西北部上三叠统延长组复合油藏成藏机理[J].岩性油气藏,2010,22(2):32-36.
[19]李添渊.鄂尔多斯盆地志丹地区长7烃源岩特征评价[J].非常规油气,2017,4(1):23-29.
[20]王香增,高潮.鄂尔多斯盆地南部长7陆相泥页岩生烃过程研究[J].非常规油气,2014,1(1):2-11.
[21]蔺宏斌,侯明才,陈洪德,等.鄂尔多斯盆地上三叠统延长组沉积体系特征及演化[J].成都理工大学学报(自然科学版),2008,35(6):674-680.
[22]王建民.陕北志丹地区长6—长2油层组水退型三角洲沉积演化特征[J].石油勘探与开发,2008,35(2):182-187.
[23]冯永春,王建民.鄂尔多斯盆地志丹油田永金地区长6储层微观孔隙成因类型及特征[J].岩性油气藏,2008,20(4):47-52.
[24]王变阳,贺永红,王康乐,等.鄂尔多斯盆地定边-安塞地区延长组下组合储层特征[J].岩性油气藏,2014,26(6):64-68.
[25]王建民,王佳媛.鄂尔多斯盆地伊陕斜坡上的低幅度构造与油气富集[J].石油勘探与开发,2013,40(1):49-57.
[26]张凤奇,王震亮,武富礼,等.低渗透致密砂岩储层成藏期油气运移的动力分析[J].中国石油大学学报(自然科学版),2012,36(4):32-38.
[27]白玉彬,赵靖舟,方朝强,等.优质烃源岩对鄂尔多斯盆地延长组石油聚集的控制作用[J].西安石油大学学报(自然科学版),2012,27(2):1-5.