准噶尔盆地车排子凸起构造演化特征及其成因

发布时间：2018-04-17 04:01

本文选题：平衡剖面 + 断层系统　；参考：《石油与天然气地质》2016年04期

【摘要】：准噶尔盆地车排子凸起油气资源丰富,其构造演化特征比较独特。基于车排子地区最新的勘探进展,利用平衡剖面技术,对车排子凸起的基本构造特征及活动参数进行定量研究,同时结合构造物理模拟实验再现了研究区的构造演化过程,在时间与空间上进一步系统地探讨了车排子凸起的构造演化特征及其成因。研究认为,车排子凸起自晚石炭世已开始发育,依次经历了强挤压—弱挤压—较弱挤压—弱伸展的演化过程,可分为初始发育(C3—P)、持续隆升(T—J)、稳定埋深(K—E)和局部伸展掀斜(N—Q)4个演化阶段,其构造演化主要受控于晚石炭世以来车排子凸起及邻区构造应力场的重大转变。C3—P时期,受EW向的挤压应力场控制,车排子凸起发生自西向东的"构造逃逸挤压",凸起东侧发育近SN向的红车断裂带,并在凸起主体部位发育大量近SN向次级逆断层;T—J时期,车排子凸起被置于挤压逆冲楔顶部的NW-SE向挤压应力场中,持续发生隆升,先期逆断层部分继承性活动;K—E时期,整体缓慢下沉,稳定埋深;至N—Q时期,转为NNE向的伸展应力场,局部发生伸展掀斜,发育大量NWW向正断层的同时,先期逆断层部分发生构造负反转。受构造应力场控制,区域构造线则经历了由近SN向到NE-SW向,再到近EW向的重要转变。
[Abstract]:Chepaizi uplift in Junggar Basin is rich in oil and gas resources and its tectonic evolution features are unique.Based on the latest exploration progress in Chepaizi area, the basic structural characteristics and activity parameters of the Chepaizi uplift are quantitatively studied by using the balanced section technique, and the tectonic evolution process of the study area is reappeared in combination with the structural physical simulation experiment.In this paper, the tectonic evolution characteristics and the origin of the Che Pai uplift are discussed systematically in time and space.It is considered that the Chepaizi uplift has developed since the late Carboniferous and has undergone the evolution process of strong compression-weak compression-weak compression-weak extension in turn.It can be divided into four evolution stages: initial development of C3-PU, continuous uplift of T-JN, stable burying depth K-E) and local extensional tilting N-Q).The tectonic evolution is mainly controlled by the important transformation of the tectonic stress field in the C3-P period and the adjacent tectonic stress field since the late Carboniferous, which is controlled by the compression stress field in the EW direction.The Chepaizi uplift occurred "tectonic escape compression" from west to east, and the red car fault zone near SN direction developed on the east side of the uplift, and a large number of near-SN sub-thrust faults developed in the main part of the uplift during T-J period.The Che Paizi bulge was placed in the NW-SE extrusion stress field at the top of the extrusion thrust wedge, and continued to uplift. During the K-E period of partial inherited activity of the pre-thrust fault, the whole body slowly sank, and the buried depth was stabilized, until the N-Q period,When the extensional stress field is converted to the NNE direction, the local extensional tilting occurs, and a large number of NWW normal faults are developed. At the same time, a negative structural inversion occurs in the part of the pre-thrust fault.Controlled by the tectonic stress field, the regional tectonic line experienced an important transformation from near SN to NE-SW and then to near EW.
【作者单位】：中国石油大学胜利学院油气工程学院;中国石油大学胜利学院高等教育研究与评价中心;中国石化石油勘探开发研究院无锡石油地质研究所;中国石油大学(华东)地球科学与技术学院;
【基金】：国家自然科学基金项目(40772132) 中国石油大学胜利学院春晖计划项目(KY2015006);中国石油大学胜利学院重点科研计划项目(KY2015013)
【分类号】：P618.13

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