鄂尔多斯盆地定边—安塞地区延长组石油聚集规律
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摘要
本文通过对定边—安塞地区生、储、成藏配置与油藏关系的分析,揭示鄂尔多斯盆地延长组的石油聚集规律,明确不同层位的成藏特点,为后期的勘探工作提供地质依据。研究结果表明,定边—安塞地区油藏分布范围主要受控于烃源岩,在生烃中心附近,延长组油藏具有纵向上含油层系多,且叠合分布的特点;距离生烃中心较远的区域,纵向上含油层系相对单一,且叠合区相对较少。区内主要发育三角洲前缘水下分流河道、河口坝和深湖相的浊积砂储集体,其中三角洲前缘水下分流河道是最优质的储集体,绝大部分的石油分布在该类沉积相带内。成藏组合有下生上储、自生自储、上生下储型岩性油藏,以下生上储油藏为主。
Based on the previous research results,this paper attempts to reveal the regularity of oil accumulation in Yanchang formation in Ordos basin by analyzing the relationship among hydrocarbon source rocks,reservoir,accumulation configuring and reservoir formation in Dingbian-Ansai area,so as to provide the geological basis for the later exploration.The study showed that the reservoir distribution in Dingbian-Ansai area is mainly controlled by source rocks,and in the vicinity of the hydrocarbon generation center,Yanchang formation has the characteristics of multiple oil-bearing series and superimposed distribution.Distance from the center of hydrocarbon generation center,the vertical oil layer is relatively single,and the superposition area is relatively less.The subfluvial distributary channel and mouth bar of delta front,and turbidite sandbody of deep lacustrine facies are mainly developed.The subfluvial distributary channel of delta front is the best reservoir facies,and most of the oil are distributed in this kind of sedimentary facies belt.There are lower source rock-upper reservoir combination,self-contained source and reservoir,upper source rock-lower reservoir combination,which were dominated by lower source rock-upper reservoir combination of lithologic reservoirs.
Based on the previous research results,this paper attempts to reveal the regularity of oil accumulation in Yanchang formation in Ordos basin by analyzing the relationship among hydrocarbon source rocks,reservoir,accumulation configuring and reservoir formation in Dingbian-Ansai area,so as to provide the geological basis for the later exploration.The study showed that the reservoir distribution in Dingbian-Ansai area is mainly controlled by source rocks,and in the vicinity of the hydrocarbon generation center,Yanchang formation has the characteristics of multiple oil-bearing series and superimposed distribution.Distance from the center of hydrocarbon generation center,the vertical oil layer is relatively single,and the superposition area is relatively less.The subfluvial distributary channel and mouth bar of delta front,and turbidite sandbody of deep lacustrine facies are mainly developed.The subfluvial distributary channel of delta front is the best reservoir facies,and most of the oil are distributed in this kind of sedimentary facies belt.There are lower source rock-upper reservoir combination,self-contained source and reservoir,upper source rock-lower reservoir combination,which were dominated by lower source rock-upper reservoir combination of lithologic reservoirs.
引文
[1]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.
[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]李相博,陈启林,刘化清,等.鄂尔多斯盆地延长组3种沉积物重力流及其含油气性[J].岩性油气藏,2010,22(3):16-21.
[4]王香增,任来义,张丽霞,等.鄂尔多斯盆地吴起—定边地区延长组下组合油源对比研究[J].石油实验地质,2013,35(4):426-431.
[5]李相博,刘显阳,周世新,等.鄂尔多斯盆地延长组下组合油气来源及成藏模式[J].石油勘探与开发,2012,39(2):172-180.
[6]何雁兵,傅强,金艳,等.鄂尔多斯盆地英旺地区长9、长10油层组油源及成藏分析[J].岩性油气藏,2012,24(5):55-60.
[7]范玉海,屈红军,王辉,等.鄂尔多斯盆地西部延长组下组合异常压力与油气分布[J].新疆石油地质,2013,34(1):14-16.
[8]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.
[9]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.
[10]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.
[11]张文正,杨华,李善鹏.鄂尔多斯盆地长91湖相优质烃源岩成藏意义[J].石油勘探与开发,2008,35(5):557-562,568.
[12]张文正,杨华,傅锁堂,等.鄂尔多斯盆地长91湖相优质烃源岩的发育机制探讨[J].中国科学D辑:地球科学,2007,37(增刊Ⅰ):33-38.
[13]姚泾利,邓秀芹,赵彦德,等.鄂尔多斯盆地延长组致密油特征[J].石油勘探与开发,2013,40(2):150-158.
[14]白玉彬,赵靖舟,赵子龙,等.鄂尔多斯盆地志丹地区延长组长7致密油成藏条件与成藏特征[J].石油与天然气地质,2013,34(5):631-639.
[15]姚宜同,李士祥,赵彦德,等.鄂尔多斯盆地新安边地区长7致密油特征及控制因素[J].沉积学报,2015,33(3):625-632.
[16]武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,6(3):307-315.
[17]丁熊,田景春,姚泾利,等.鄂尔多斯盆地延长组长101期沉积特征[J].岩性油气藏,2015,27(4):25-31,39.
[18]曹红霞.鄂尔多斯盆地晚三叠世沉积中心迁移演化规律研究[D].西安:西北大学,2008:72-96.
[19]赵文智,胡素云,汪泽成,等.鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用[J].石油勘探开发,2003,30(5):1-5.
[20]刘显阳,邓秀芹,赵彦德,等.姬塬地区长9油层组油气运移规律及模式探讨[J].岩性油气藏,2011,23(5):9-15.
[21]席胜利,刘新社,王涛.鄂尔多斯盆地中生界石油运移特征分析[J].石油实验地质,2004,26(3):229-235.
[22]赵孟为.鄂尔多斯盆地油气形成运移时间和运移方向的确定与勘探方向[J].石油实验地质,1996,18(4):341-347.
[23]王变阳,董丽红,李广涛,等.鄂尔多斯盆地志丹地区长10原油地球化学特征及油源探讨[J].西安科技大学学报,2016,36(4):490-496.
[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]李相博,陈启林,刘化清,等.鄂尔多斯盆地延长组3种沉积物重力流及其含油气性[J].岩性油气藏,2010,22(3):16-21.
[4]王香增,任来义,张丽霞,等.鄂尔多斯盆地吴起—定边地区延长组下组合油源对比研究[J].石油实验地质,2013,35(4):426-431.
[5]李相博,刘显阳,周世新,等.鄂尔多斯盆地延长组下组合油气来源及成藏模式[J].石油勘探与开发,2012,39(2):172-180.
[6]何雁兵,傅强,金艳,等.鄂尔多斯盆地英旺地区长9、长10油层组油源及成藏分析[J].岩性油气藏,2012,24(5):55-60.
[7]范玉海,屈红军,王辉,等.鄂尔多斯盆地西部延长组下组合异常压力与油气分布[J].新疆石油地质,2013,34(1):14-16.
[8]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.
[9]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.
[10]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.
[11]张文正,杨华,李善鹏.鄂尔多斯盆地长91湖相优质烃源岩成藏意义[J].石油勘探与开发,2008,35(5):557-562,568.
[12]张文正,杨华,傅锁堂,等.鄂尔多斯盆地长91湖相优质烃源岩的发育机制探讨[J].中国科学D辑:地球科学,2007,37(增刊Ⅰ):33-38.
[13]姚泾利,邓秀芹,赵彦德,等.鄂尔多斯盆地延长组致密油特征[J].石油勘探与开发,2013,40(2):150-158.
[14]白玉彬,赵靖舟,赵子龙,等.鄂尔多斯盆地志丹地区延长组长7致密油成藏条件与成藏特征[J].石油与天然气地质,2013,34(5):631-639.
[15]姚宜同,李士祥,赵彦德,等.鄂尔多斯盆地新安边地区长7致密油特征及控制因素[J].沉积学报,2015,33(3):625-632.
[16]武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,6(3):307-315.
[17]丁熊,田景春,姚泾利,等.鄂尔多斯盆地延长组长101期沉积特征[J].岩性油气藏,2015,27(4):25-31,39.
[18]曹红霞.鄂尔多斯盆地晚三叠世沉积中心迁移演化规律研究[D].西安:西北大学,2008:72-96.
[19]赵文智,胡素云,汪泽成,等.鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用[J].石油勘探开发,2003,30(5):1-5.
[20]刘显阳,邓秀芹,赵彦德,等.姬塬地区长9油层组油气运移规律及模式探讨[J].岩性油气藏,2011,23(5):9-15.
[21]席胜利,刘新社,王涛.鄂尔多斯盆地中生界石油运移特征分析[J].石油实验地质,2004,26(3):229-235.
[22]赵孟为.鄂尔多斯盆地油气形成运移时间和运移方向的确定与勘探方向[J].石油实验地质,1996,18(4):341-347.
[23]王变阳,董丽红,李广涛,等.鄂尔多斯盆地志丹地区长10原油地球化学特征及油源探讨[J].西安科技大学学报,2016,36(4):490-496.