Expanding Fracture Distribution of Qikou Sag in Cenozoic and Its Evolution
Received date: 2011-05-10
Revised date: 2011-09-15
Online published: 2011-12-10
We use the secondary interpretation result of new collecting 5 280km2 3D seismic data to discuss the extension fracture system in the Qikou sag.We think that the first and second order main stretch fracture with rolling evolution characteristics in the Qikou sag is to some extent the typical aspect of the whole basin fault evolution.Thus,we emphatically discuss the evolution of the Cangdong and Binhai faults.The main extensive fault activity in the Qikou sag is representative of the stepwise,migratory aptitude,cyclicity & long term behavior in Cenozoic.The fault activity rolled horizontally from SW to NE direction,reflecting the stepwise and migratory aptitude.The fault activities can be divided vertically into four phases,including mid-Es3 Epoch,mid-Es1 Epoch,end of Ed Epoch,and end of Nm Epoch.Mid-Es1 and Ed Epochs are the main active time of the faults,suggesting the cyclicity and long term behavior of the fault activities.
Key words： Qikou sag; Stretch Fracture; Fault activity; Basin evolution.
WANG Hui, LU Yi, ZHANG Zhi-Pan, CHEN Xian-Bao . Expanding Fracture Distribution of Qikou Sag in Cenozoic and Its Evolution[J]. Natural Gas Geoscience, 2011 , 22(6) : 1009 -1014 . DOI: 10.11764/j.issn.1672-1926.2011.06.1009
［1］He Shu,Yang Qiao,Wang Jiading.Fractal analysis of fault system
[JP] of central area in the Huanghua depression［J］.Geotectonica et Metallogenia,2008,32(4):455-461.［何书,杨桥,王家鼎.黄骅坳陷中区断裂系统分形研究［J］.大地构造与成矿学,2008,32(4):455-461.］
［2］Qi Jiafu,Xia Yiping,Yang Qiao.Oil Structural Analysis［M］.Beijing:Oil Industry Press,2006:25-29.［漆家福,夏义平,杨桥.油区构造解析［M］.北京：石油工业出版社,2006:25-29.］
［3］Shi Shuangshuang.Formation and Evolution for the Main Fault Systems and Their Implication to Petroleum Geology in Qikou Depression［D］.Wuhan:China University of Geosciences,2009.［史双双.歧口凹陷主断裂系统形成演化及油气地质意义［D］.武汉：中国地质大学,2009.］
［4］Qu Fang,Chen Qinghua,Lian Chengbo,et al.Faulted structure systems of Huanghua depression in Cenozoic Era［J］.Petroleum Geology and Recovery Efficiency,2006,13（5）：7-10.［渠芳,陈清华,连承波,等.黄骅坳陷新生代断裂构造系统研究［J］.油气地质与采收率,2006,13（5）:7-10.］
［5］Wu Xingning,Zhou Jianxun.The anatomy about the tectonic cause of formation of Bohaiwan basin［J］.Progress in Geophysics,2003,15(1)：98-107.［吴兴宁,周建勋.渤海湾盆地构造成因观点剖析［J］.地球物理学进展,2003,15(1)：98-107.］
［6］Dai Junsheng,Lu Kezheng,Qi Jiafu,et al.Structure style evolution in Paleogene Bohai Bay basin［J］.Acta Petrolei Sinica,1998,19(4):16-20.［戴俊生,陆克政,漆家福,等.渤海湾盆地早第三纪构造样式的演化［J］.石油学报,1998,19(4):16-20.
［7］Fan Jingliang,Huang Zhiquan,Fan Weihua.Cenozoic tectonic evolution of Qikou sag and its relations to hydrocarbon traps in Bohai Bay basion of east China［J］.Journal of Jilin Unviersity:Earth Science Edition,2004,34(4):536-541.［樊敬亮,黄志全,樊卫花.歧口凹陷新生代构造演化与油气［J］.吉林大学学报:地球科学版,2004,34(4):536-541.］
［8］Qi Peng,Ren Jianye,Shi Shuangshuang,et al.Features of the Cenozoic structure of the coastal zone in Qikou sag and its formation mechanism［J］.Acta Petrolei Sinica,2010,31(6):900-905.［祁鹏,任建业,史双双,等.歧口凹陷沿岸带新生代构造特征及其形成机制［J］.石油学报,2010,31(6)：900-905.］
［9］Zhou Lihong,Lu Yi,Xiao Dunqing,et al.Basinal texture structure of Qikou sag in Bohai Bay basin and its evolution［J］.Natural Gas Geoscience,2011,22(3):373-382.［周立宏,卢异,肖敦清,等.渤海湾盆地歧口凹陷盆地结构构造及演化［J］.天然气地球科学,2011,22(3):373-382.］
［10］Lu Yi,Wang Shuxiang,Chen Song,et al.Computing method about intensity of fault activity and its application［J］.Natural Gas Geoscience,2010,21(4):612-616.［卢异,王书香,陈松,等.一种断裂活动强度计算方法及其应用［J］.天然气地球科学,2010,21(4):612-616.］
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号