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胡秋媛,董大伟,杨建磊,等. 准噶尔盆地中4区块构造解析及物理模拟实验[J]. 科学技术与工程, 2020, 20(10): 3898-3907.
胡秋媛,et al.Structural Analysis and Physical Simulation Experiment in the 4th Block of the Central Junggar Basin[J].Science Technology and Engineering,2020,20(10):3898-3907.
准噶尔盆地中4区块构造解析及物理模拟实验
Structural Analysis and Physical Simulation Experiment in the 4th Block of the Central Junggar Basin
投稿时间:2019-07-15  修订日期:2019-10-31
DOI:
中文关键词:  准噶尔盆地  中4区块  构造解析? 构造物理模拟实验
英文关键词:
基金项目:(40772132)、中国石油大学胜利学院科研计划重点项目(KY2017010)、中国石油大学胜利学院春晖计划项目(KY2018007)和中国石油大学胜利学院大学生创新训练计划(2019004)资助
                    
作者单位
胡秋媛 中国石油大学胜利学院
董大伟 中国石油大学胜利学院
杨建磊 中国石油大学胜利学院
高 亮 中国石油大学胜利学院
孔 雪 中国石油大学胜利学院
杨 光 中国石油大学胜利学院
焦晓倩 中国石油大学胜利学院
摘要点击次数: 123
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中文摘要:
      准中4区块位于准噶尔盆地腹部地区,发育多个含油构造,油气勘探潜力巨大,但勘探程度较低。综合应用地震、钻井等资料,通过构造精细解释、平衡剖面回剥、断层落差等方法,系统研究准中4区块的几何学、运动学及动力学特征,在此基础上基于相似性原理,通过构造物理模拟实验再现了研究区构造演化过程,从而对研究区动力学成因取得了新的认识。研究表明,准中4区块断层呈带状分布,可划分为董3-董1井断层区、董7-董8井断层区和董6井断层区3个构造分区。其中,董3-董1井区断层为高角度逆冲断层,在J1s-J2t沉积期强烈活动;董7-董8井区断层为高角度正断层和斜滑断层,董6井区断层为高角度“卷心菜式”正断层,均在J1s-J2x沉积期强烈活动。进入白垩纪,研究区内各分区断层活动减弱,代之以区域整体沉降,至新近纪,构造变形以单斜挠曲为主要特征。构造物理模拟实验进一步证实了董3-董1井区断层受控于准南缘冲断和白家海凸起的阻挡,董7-董8井区断层受控于走滑变形机制下三台凸起冲断的后缘拉张。
英文摘要:
      The 4th block is located in the hinterland of Junggar Basin, where there are many oil-bearing structures. It has great potential for oil and gas exploration, but its exploration degree is low. The geometry, kinematics and dynamics characteristics of the 4th block are systematically studied by using seismic and drilling data, fine structural interpretation, balanced profile and fault drop. Based on the similarity principle, the tectonic evolution process of the study area is reproduced through the structural physical simulation experiment, thus a new understanding of the dynamic origin is obtained. The result shows that the faults in the 4th block of central Junggar Basin are zonally distributed, and can be divided into three structural zones: the fault zone of Dong3-Dong1 well, the fault zone of Dong7-Dong8 well and the fault zone of Dong6 well. Among them, the faults in Dong3-Dong1 well area are high-angle thrust faults, which are strongly active during J1s-J2t sedimentary period; the faults in Dong7-Dong8 well area are high-angle normal faults and oblique slip faults, the faults in Dong6 well area are high-angle "cabbage" normal faults, and they are all strongly active during J1s-J2x sedimentary period. In the Cretaceous, the fault activity in the study area was weakened, replaced by the regional overall subsidence. In the Neogene, the structural deformation was mainly characterized by monoclinic deflection. Structural physical simulation experiments further confirmed that the faults in Dong3-Dong1 well area were controlled by the thrust of quasi-southern margin and the blocking of Baijiahai Uplift, and the faults in Dong7-Dong8 well area were controlled by the extension of the back edge of the Three Uplift’ thrusting under the strike-slip deformation mechanism.
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