济阳坳陷沾车地区义东断裂带走滑构造特征及其控藏作用
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摘要
济阳坳陷沾车地区义东断裂带走滑构造特征及其控藏作用不明,制约着该区油气勘探。综合地震、测井、钻井等资料开展义东断裂带走滑构造特征分析,并在此基础上评价走滑断裂对油气成藏的控制作用。结果表明:义东断裂走滑特征明显,主断层(义东断层)及其伴生次级断层呈锐角或近直角斜交,平面上呈"入"字型,主断层与两侧的平行断层呈NEE—NE向雁行式展布;剖面上,主断层面陡峭,伴生的次级断层断至主断层面上,形成负花状构造,且具有窄而深的半地堑式构造。义东断裂带控制陡坡带发育多期次、多类型的砂砾岩扇体,断裂多期次活动形成了一系列沿着断层分布的NE向雁列式断块、断鼻及断背斜圈闭,义东断裂主要对油气运移起侧向封堵和垂向输导作用,控制油气沿义东断裂带呈条带状展布。
The strike-slip structure characteristics of Yidong fault zone and its influence on the hydrocarbon accumulation is unclear in Zhanche area of Jiyang Depression,which restricts the oil and gas exploration in this area. To solve this problem,the strike-slip structure characteristics of Yidong fault zone in Zhanche area were analyzed based on data of seismic,logging and drilling,and the effect of strike-slip faults on hydrocarbon accumulation was evaluated. The result shows that the faults in Yidong fault zone have typical strike-slip characteristics as follows:(1)in the plane,the main fault(F1)is intersected by its associated secondary faults(NWW)with acute or right angle,presenting the shape of"入";while the main fault and its parallel faults in the two sides distribute in NEE-NE direction,presenting an en-echelon form;(2)in the vertical,the main fault has steep fault plane and the associated secondary faults are broken up to showing minus flower structure figure in seismic section,which leads to the formation of narrow and steep half grabens. The Yidong fault zone controls the development of multi-stage and multi-type sandy conglomerate fans and NE-direction distributed fault block,fault nose and fault-related anticline traps. The Yidong fault seals the hydrocarbon laterally but acts as paths for hydrocarbon vertical migration,which results in the belt-like hydrocarbon distribution characteristic along the fault zone.
The strike-slip structure characteristics of Yidong fault zone and its influence on the hydrocarbon accumulation is unclear in Zhanche area of Jiyang Depression,which restricts the oil and gas exploration in this area. To solve this problem,the strike-slip structure characteristics of Yidong fault zone in Zhanche area were analyzed based on data of seismic,logging and drilling,and the effect of strike-slip faults on hydrocarbon accumulation was evaluated. The result shows that the faults in Yidong fault zone have typical strike-slip characteristics as follows:(1)in the plane,the main fault(F1)is intersected by its associated secondary faults(NWW)with acute or right angle,presenting the shape of"入";while the main fault and its parallel faults in the two sides distribute in NEE-NE direction,presenting an en-echelon form;(2)in the vertical,the main fault has steep fault plane and the associated secondary faults are broken up to showing minus flower structure figure in seismic section,which leads to the formation of narrow and steep half grabens. The Yidong fault zone controls the development of multi-stage and multi-type sandy conglomerate fans and NE-direction distributed fault block,fault nose and fault-related anticline traps. The Yidong fault seals the hydrocarbon laterally but acts as paths for hydrocarbon vertical migration,which results in the belt-like hydrocarbon distribution characteristic along the fault zone.
引文
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[14]刘朝露,夏斌.济阳坳陷新生代构造演化特征与油气成藏组合模式[J].天然气地球科学,2007,18(2):209-214,228.LIU Zhaolu,XIA Bin.Relationship between Cenozoic tectonic evolution and plays in Jiyang Depression[J].Natural Gas Geoscience,2007,18(2):209-214,228.
[15]罗文生.渤南洼陷断裂活动与油气成藏关系研究[D].青岛:中国石油大学(华东),2007.LUO Wensheng.Study on the relation between fault activity and hydrocarbon accumulation in Bonan depression[D].Qingdao:China University of Petroleum(East China),2007.
[16]李伟,吴智平,张明华,等.埕岛地区中生代和新生代断层发育特征及其对沉积的控制作用[J].中国石油大学学报:自然科学版,2006,30(1):1-6,11.LI Wei,WU Zhiping,ZHANG Minghua,et al.Development characteristic of Mesozoic and Cenozoic faults and its control over deposition in Chengdao area[J].Journal of China University of Petroleum:Natural Science Edition,2006,30(1):1-6,11.
[17]彭文绪,张志强,姜利群,等.渤海西部沙垒田凸起区走滑断层演化及其对油气的控制作用[J].石油学报,2012,33(2):204-212.PENG Wenxu,ZHANG Zhiqiang,JIANG Liqun,et al.Evolution of strike-slip faults in the Shaleitian bulge of the western Bohai offshore and their control on hydrocarbons[J].Acta Petrolei Sinica,2012,33(2):204-212.
[18]付晨阳,汤良杰,曹自成,等.塔中北坡走滑断裂横向变形差异及其油气地质意义[J].石油实验地质,2017,39(6):783-789.FU Chenyang,TANG Liangjie,CAO Zicheng,et al.Lateral deformation difference of strike-slip faults on the northern slope of Tazhong uplift and its control on petroleum geology[J].Petroleum Geology&Experiment,2017,39(6):783-789.
[2]余朝华.渤海湾盆地济阳坳陷东部走滑构造特征及其对油气成藏的影响研究[D].青岛:中国科学院研究生院(海洋研究所),2008.YU Zhaohua.Study of strike-slip structure feature and its influence on the hydrocarbon accumulation in east Jiyang Depression,Bohai Bay Basin[D].Qingdao:Institute of Oceanology,Chinese Academy of Science,2008.
[3]杨贵丽.青东凹陷走滑构造对油气成藏的控制作用[J].油气地质与采收率,2014,21(5):18-21.YANG Guili.The strike slip structure and its influences on the formation of petroleum reservoir in Qingdong sag[J].Petroleum Geology and Recovery Efficiency,2014,21(5):18-21.
[4]张明振,付瑾平,印兴耀,等.桩海地区的走滑和挤压构造特征[J].油气地质与采收率,2006,13(2):5-7.ZHANG Mingzhen,FU Jinping,YIN Xingyao,et al.Characters of strike-slip and extrusion structure in Zhuanghai region[J].Petroleum Geology and Recovery Efficiency,2006,13(2):5-7.
[5]胡贤根,谭明友,张明振.济阳坳陷东部走滑构造及其形成机制[J].油气地质与采收率,2007,14(5):42-45.HU Xiangen,TAN Mingyou,ZHANG Mingzhen.Strike-slip struc-tures and their forming mechanism in the eastern Jiyang Depression[J].Petroleum Geology and Recovery Efficiency,2007,14(5):42-45.
[6]曹高社,毕磊,余朕朕,等.济阳坳陷东北部埕东断层构造特征及演化过程[J].河南理工大学学报:自然科学版,2012,31(4):422-428.CAO Gaoshe,BI Lei,YU Zhenzhen,et al.Characters and its evolutionary process of Chengdong fault in the northeast of Jiyang depression[J].Journal of Henan Polytechnic University:Natural Science,2012,31(4):422-428.
[7]兖鹏,王六柱,余朝华,等.济阳坳陷垦东走滑断裂构造特征及其对油气成藏的影响[J].天然气地球科学,2009,20(1):100-107.YAN Peng,WANG Liuzhu,YU Zhaohua,et al.Strike-slip structural feature and its influence on the hydrocarbon accumulation in Kendong Area,Jiyang Depression[J].Natural Gas Geoscience,2009,20(1):100-107.
[8]曹高社,毕磊,彭传圣,等.济阳坳陷东部长堤走滑断裂带构造特征及演化过程[J].地质科学,2014,49(4):1 059-1 069.CAO Gaoshe,BI Lei,PENG Chuansheng,et al.Characters of Changdi fault in the east of Jiyang depression and its reconstruction process[J].Chinese Journal of Geology,2014,49(4):1 059-1 069.
[9]余朝华,黄超,祁成祥,等.济阳坳陷东部垦东-孤东潜山带走滑断层特征与成因分析[J].石油物探,2013,52(3):301-306.YU Zhaohua,HUANG Chao,QI Chengxiang,et al.Strike-slip fault characteristics and their forming mechanism in KendongGudong area of eastern Jiyang depression[J].Geophysical Prospecting for Petroleum,2013,52(3):301-306.
[10]蒋子文,王嗣敏,徐长贵,等.渤海海域辽东带中南部郯庐断裂走滑活动的沉积响应[J].现代地质,2013,27(5):1 005-1 012.JIANG Ziwen,WANG Simin,XU Changgui,et al.Sedimentary response to the strike-slip activities of Tan-lu Fault in central and southern parts of East Liaodong Bay Area in Bohai Sea[J].Geoscience,2013,27(5):1 005-1 012.
[11]吕优良,刘雅利,汤达祯,等.义东油田义东断裂带成藏规律分析[J].科技导报,2013,31(15):52-55.LüYouliang,LIU Yali,TANG Dazhen,et al.Reservoir patterns of Yidong Fault Zone in Yidong Oilfield[J].Science&Technology Review,2013,31(15):52-55.
[12]张善文,王永诗,纪友亮.义东地区陡岸扇体沉积特征及相模式[J].石油勘探与开发,1997,24(2):41-45.ZHANG Shanwen,WANG Yongshi,JI Youliang.Sedimentary characteristic and facies model of the fan body on the abrupt slope in Yidong region[J].Petroleum Exploration and Development,1997,24(2):41-45.
[13]束宁凯,汪新文,王金铸,等.义和庄地区潜山内幕构造演化特征及其控藏作用[J].油气地质与采收率,2017,24(3):25-29.SHU Ningkai,WANG Xinwen,WANG Jinzhu,et al.Tectonic evolution characteristics of inner buried hills in Yihezhuang area and its controlling effect on the hydrocarbon accumulation[J].Petroleum Geology and Recovery Efficiency,2017,24(3):25-29.
[14]刘朝露,夏斌.济阳坳陷新生代构造演化特征与油气成藏组合模式[J].天然气地球科学,2007,18(2):209-214,228.LIU Zhaolu,XIA Bin.Relationship between Cenozoic tectonic evolution and plays in Jiyang Depression[J].Natural Gas Geoscience,2007,18(2):209-214,228.
[15]罗文生.渤南洼陷断裂活动与油气成藏关系研究[D].青岛:中国石油大学(华东),2007.LUO Wensheng.Study on the relation between fault activity and hydrocarbon accumulation in Bonan depression[D].Qingdao:China University of Petroleum(East China),2007.
[16]李伟,吴智平,张明华,等.埕岛地区中生代和新生代断层发育特征及其对沉积的控制作用[J].中国石油大学学报:自然科学版,2006,30(1):1-6,11.LI Wei,WU Zhiping,ZHANG Minghua,et al.Development characteristic of Mesozoic and Cenozoic faults and its control over deposition in Chengdao area[J].Journal of China University of Petroleum:Natural Science Edition,2006,30(1):1-6,11.
[17]彭文绪,张志强,姜利群,等.渤海西部沙垒田凸起区走滑断层演化及其对油气的控制作用[J].石油学报,2012,33(2):204-212.PENG Wenxu,ZHANG Zhiqiang,JIANG Liqun,et al.Evolution of strike-slip faults in the Shaleitian bulge of the western Bohai offshore and their control on hydrocarbons[J].Acta Petrolei Sinica,2012,33(2):204-212.
[18]付晨阳,汤良杰,曹自成,等.塔中北坡走滑断裂横向变形差异及其油气地质意义[J].石油实验地质,2017,39(6):783-789.FU Chenyang,TANG Liangjie,CAO Zicheng,et al.Lateral deformation difference of strike-slip faults on the northern slope of Tazhong uplift and its control on petroleum geology[J].Petroleum Geology&Experiment,2017,39(6):783-789.