塔里木盆地雅克拉断凸古构造应力场数值模拟

doi:10.11743/ogg20130619

摘要/Abstract

摘要： 雅克拉断凸长期处于挤压环境，逆断层发育，但在喜马拉雅早期正断层也发育。为了研究雅克拉断凸的断层发育特征，对海西晚期和喜马拉雅早期古构造应力场进行三维有限元数值模拟。结果表明，海西晚期整个研究区在挤压应力作用下皆为中、低应力值区，中、东部南侧是低应力值区，往北、往西应力值增加，该应力场导致研究区内部发育了一些规模较小的逆断层。喜马拉雅早期研究区在挤压应力作用下向上隆起，隆起幅度由西向东逐渐增加，隆起导致地层弯曲，且以边界断裂顶部附近区域弯曲度最大，导致此处的拉张应力也最大，正断层正是从此处开始发育，然后再向内发展；与此同时，研究区下部受到的挤压应力作用较小，导致内部的逆断层几乎没有进一步发育。

关键词: 海西晚期, 喜马拉雅早期, 数值模拟, 构造应力场, 雅克拉断凸, 塔里木盆地

Abstract: Thrust faults are widely developed in Yakela faulted salient due to long-term compression regime.However,some normal faults were also formed during the Early Himalayanian.In order to decode the mechanism of formation and evolution of these faults,we conducted 3D finite element numerical simulation for the Late Hercynian and Early Himala-yan stress field in the Yakela faulted salient.During the Late Hercynian,the compressive stress resulted in the low stress areas in the central and eastern parts of the Yakela faulted salient and the low to moderate stress in the west and north part.This stress field caused the development of some small-scale thrust faults in the Yakela faulted salient.During the Early Himalayan,the compressive stress induced uplifting of the study area,with the amplitude of uplifting increasing from west to east.As a result,the strata bended in the study area,with the strongest tensile stress occurring on top of the boundary fault,and normal faults were also developed in these locations and extended inwards.Meanwhile,compression stress was weak in the lower part of the whole study area,thus did not induce the further development of thrust faults in the inner parts of the study area.

Key words: Late Hercynian, Early Himalayan, numerical simulation, tectonic stress field, Yakela faulted salient, Tarim Basin

中图分类号:

TE121.2

罗小龙,汤良杰. 塔里木盆地雅克拉断凸古构造应力场数值模拟[J]. 石油与天然气地质, 2013, 34(6): 841-846. doi: 10.11743/ogg20130619 Luo Xiaolong,Tang Liangjie. Numerical simulation of palaeotectonic stress field in Yakela faulted salient, the Tarim Basin[J]. Oil & Gas Geology, 2013, 34(6): 841-846. doi: 10.11743/ogg20130619

参考文献

[1] 孙晓庆.古构造应力场有限元数值模拟的应用及展望[J].断块油气田, 2008, 15(3):31-33. Sun Xiaoqing.Present situation and prospect of application for finite element numerical simulation of palaeotectonic stress fields[J].Fault-Block Oil & Gas Field, 2008, 15(3):31-33.
[2] 张胜利.构造应力场模拟——有限元理论、方法和研究进展[J].西北地震学报, 2010, 32(4):405-410. Zhang Shengli.Modeling of tectonic stress field—the theory, method and related research progress of the finite element method[J].Northwestern Seismological Journal, 2010, 32(4):405-410.
[3] 魏国齐, 贾承造, 施央申, 等.塔北隆起北部中新生界张扭性断裂系统特征[J].石油学报, 2001, 22(1):19-24. Wei Guoqi, Jia Chengzao, Shi Yangshen, et al.Tectonic characteristics and petroleum accumulation in extensional-shear fault system in Mesozoic-Cenozoic formations in the northern area of Tabei uplift, Tarim[J].Acta Petrolei Sinica, 2001, 22(1):19-24.
[4] 杨春林, 吴奇之, 夏义平.塔里木盆地北部隆起中、新生界张扭断裂系统成因及其油气聚集的作用[J].石油地球物理勘探, 2000, 35(4):461-468. Yang Chunlin, Wu Qizhi, Xia Yiping.The origin of Mesozoic-Cenozoic extension torsional fault system in the north positive element in the Tarim Basin, and its role in accumulating oil and gas[J].Oil Geophysical Prospecting, 2000, 35(4):461-468.
[5] 罗小龙, 汤良杰, 谢大庆, 等.塔里木盆地雅克拉断凸走滑作用及其形成机理[J].石油与天然气地质, 2013, 34(2):257-263. Luo Xiaolong, Tang Liangjie, Xie Daqing, et al.Strike-slip movement and its genetic mechanism in Yakela faulted salient, the Tarim Basin[J].Oil & Gas Geology, 2013, 34(2):257-263.
[6] 汤良杰, 金之钧, 张一伟, 等.塔里木盆地北部隆起负反转构造及其地质意义[J].现代地质, 1999, 13(1):93-98. Tang Liangjie, Jin Zhijun, Zhang Yiwei, et al.Negative inversion structures and geological significance of northern uplift, the Tarim Basin, northwestern China[J].Geosciences, 1999, 13(1):93-98.
[7] 陈楚铭, 卢华复, 王国强, 等.塔里木盆地塔北隆起叠加构造分析[J].高校地质学报, 1998, 4(3):394-302. Chen Chuming, Lu Huafu, Wang Guoqiang, et al.Analysis of supe-rimposed structures in the north Tarim uplift, Tarim Basin[J].Geolo-gical Journal of China Universities, 1998, 4(3):294-302.
[8] 张云鹏, 任建业, 阳怀忠, 等.塔里木盆地轮南低凸起构造特征及演化[J].石油与天然气地质, 2011, 31(3):440-447, 460. Zhang Yunpeng, Ren Jianye, Yang Huaizhong, et al.Structure features and its evolution of Lunnan low uplift, the Tarim Basin[J].Oil & Gas Geology, 2011, 31(3):440-447, 460.
[9] 范桃园, 龙长兴, 杨振宇, 等.中国大陆现今地应力场黏弹性球壳数值模拟综合研究[J].地球物理学报, 2012, 55(4):1249-1260. Fan Taoyuan, Long Changxing, Yang Zhenyu, et al.Comprehensive modeling on the present crustal stress of China mainland with the viscoelastic spherical shell[J].Chinese Journal of Geophysics, 2012, 55(4):1249-1260.
[10] 万贵龙, 张德会, 张守仁, 等.北大港构造带东翼华北期构造应力场模拟[J].地学前缘, 2012, 19(6):194-199. Wan Guilong, Zhang Dehui, Zhang Shouren, et al.Simulation of tectonic stress field of the east of Beidagang tectonic belts in North China Tectonic Period[J].Earth Science Frontiers, 2012, 19(6):194-199.
[11] 田宜平, 刘雄, 李星, 等.构造应力场三维数值模拟的有限单元法[J].地球科学(中国地质大学学报), 2011, 36(2):375-380. Tian Yiping, Liu Xiong, Li Xing, et al.Finite element method of 3D numerical simulation on tectonic stress field[J].Earth Science—Journal of China University of Geosciences, 2011, 36(2):375-380.
[12] 王连捷, 孙宝珊, 王薇, 等.地应力对油气运移的驱动作用[J].地质力学学报, 2011, 17(2):132-143. Wang Lianjie, Sun Baoshan, Wang Wei, et al.Driving effect of the crustal stress on petroleum migration[J].Journal of Geomechanics, 2011, 17(2):132-143.
[13] Barba S, Carafa M M C, Mariucci M T, et al.Present-day stress-field modelling of southern Italy constrained by stress and GPS data[J].Tectonophysics, 2010, 482(1-4):193-204.
[14] Ismail-Zadeh A, Aoudia A, Panza G F.Three-dimensional numerical modeling of contemporary mantle flow and tectonic stress beneath the Central Mediterranean[J].Tectonophysics, 2010, 482(1-4):226-236.
[15] Islam M S, Shinjo R, Kayal J R.The tectonic stress field and deformation pattern of northeast India, the Bengal basin and the Indo-Burma Ranges:a numerical approach[J].Journal of Asian Earth Sciences, 2011, 40(1):121-131.
[16] 黄继文, 顾忆, 丁勇, 等.塔里木盆地北部地区上奥陶统烃源条件[J].石油与天然气地质, 2012, 33(6):853-858. Huang Jiwen, Gu Yi, Ding Yong, et al.Upper Ordovician source rocks in northern Tarim Basin[J].Oil & Gas Geology, 2012, 33(6):853-858.
[17] 王旭, 沈建伟, 杨红强, 等.塔里木盆地轮古地区轮深2井蓬莱坝组沥青浸染样式[J].石油与天然气地质, 2011, 31(3):420-429. Wang Xu, Shen Jianwei, Yang Hongqiang, et al.Bitumen impregnation patterns of the Lower Ordovician Penglaiba Formation in Well Lunshen-2 in Lungu area, the Tarim Basin[J].Oil & Gas Geology, 2011, 31(3):420-429.
[18] 刘显太, 戴俊生, 徐建春, 等.纯41断块沙四段现今地应力场有限元模拟[J].石油勘探与开发, 2003, 30(3):126-128. Liu Xiantai, Dai Junsheng, Xu Jianchun, et al.Finite element simulation of the present mound stress field of Sha-4 Member in the Chun-41 fault block[J].Petroleum Exploration and Development, 2003, 30(3):126-128.
[19] 黄立功, 钟建华, 王海侨, 等.柴西地区构造应力场演化模拟[J].石油勘探与开发, 2004, 31(6):75-77. Huang Ligong, Zhong Jianhua, Wang Haiqiao, et al.Evolution simulation of stress field in West Qaidam Basin, NW China[J].Petroleum Exploration and Development, 2004, 31(6):75-77.
[20] 崔军文, 唐哲民.塔里木盆地构造格架和构造应力场分析[J].岩石学报, 2011, 27(1):231-242. Cui Junwen, Tang Zhemin.Tectonic framework of the Tarim basin and its tectonic stress field analysis[J].Acta Petrologica Sinica, 2011, 27(1):231-242.
[21] 周新桂, 孙宝珊, 徐宏节, 等.雅克拉—轮台地区变形特征及控油作用研究[J].地质力学学报, 2001, 7(1):33-40. Zhou Xingui, Sun Baoshan, Xu Hongjie, et al.Tectonic deformation of Yakerla Luntai Region in North Tarim Basin and its control on oil/gas accumulation[J].Journal of Geomechanics, 2001, 7(1):33-40.
[22] 王延欣, 侯贵廷, 李江海, 等.塔北隆起中西部新近纪末构造应力场数值模拟[J].北京大学学报(自然科学版)网络版(预印本), 2008, 3(1):52-58. Wang Yanxin, Hou Guiting, Li Jianghai, et al.Numercial simulation of tectonic stress field at the end of Neocene in the Midwest of Northern Tarim Basin[J].Acta Scientiarum Naturalium Universitatis Pekinensis On Line(First), 2008, 3(1):52-58.
[23] Hou G T, Wang C C, Li J H, et al.Late Paleoproterozoic extension and a paleostress field reconstruction of the North China Craton[J].Tectonophysics, 2006, 422(1-4):89-98.
[24] 王连捷, 王红才, 王薇, 等.油田三维构造应力场、裂缝与油气运移[J].岩石力学与工程学报, 2004, 23(23):4052-4057. Wang Lianjie, Wang Hongcai, Wang Wei, et al.Relation among three dimensional tectonic stress field, fracture and migration of oil and gas in oil field[J].Chinese Journal of Rock Mechanics and Engineering, 2004, 23(23):4052-4057.
[25] 丁原辰, 孙宝珊, 汪西海, 等.塔北油田现今地应力的AE法测量[J].地球科学(中国地质大学学报), 1997, 22(2):101-104. Ding Yuanchen, Sun Baoshan, Wang Xihai, et al.Present stress state determined by AE in the Northern Tarim oilfield[J].Earth Science—Journal of China University of Geosciences, 1997, 22(2):101-104.