[1]侯贵廷,孙帅,郑淳方,等.克拉苏构造带克深区段盐下构造样式[J].新疆石油地质,2019,(01):21.[doi:10.7657/XJPG20190103]
 HOU Guiting,SUN Shuai,ZHENG Chunfang,et al.Subsalt Structural Styles of Keshen Section in Kelasu Tectonic Belt[J].Xinjiang Petroleum Geology,2019,(01):21.[doi:10.7657/XJPG20190103]
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克拉苏构造带克深区段盐下构造样式()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2019年01期
页码:
21
栏目:
出版日期:
2019-02-01

文章信息/Info

Title:
Subsalt Structural Styles of Keshen Section in Kelasu Tectonic Belt
文章编号:
1001-3873(2019)01-0021-06
作者:
侯贵廷1孙帅1郑淳方1唐雁刚2周露2莫涛2
(1.北京大学 地球与空间科学学院 教育部造山带与地壳演化重点实验室,北京 100871;2.中国石油 塔里木油田分公司 勘探开发研究院,新疆 库尔勒 841000)
Author(s):
HOU Guiting1 SUN Shuai1 ZHENG Chunfang1 TANG Yangang2 ZHOU Lu2 MO Tao2
(1.MOE Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing 100871, China; 2.Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China)
关键词:
库车坳陷克拉苏构造带开阔褶皱平缓褶皱翼间角构造样式
Keywords:
Kuqa depression Kelasu tectonic belt open fold gentle fold interlimb angle structural style
分类号:
P542
DOI:
10.7657/XJPG20190103
文献标志码:
A
摘要:
对库车坳陷克拉苏构造带白垩系巴什基奇克组的勘探开发发现,裂缝发育具有上下分带的特征,很可能受背斜中和面的控制,现有的断层相关构造的划分模型难以解释裂缝的垂向分带性,需要重新建立构造样式的划分方案。以克拉苏构造带克深区段为研究区,利用三维地震资料解释,以断背斜翼间角为主要要素、结合断层的组合形态,重新建立克拉苏构造带克深区段的盐下构造样式。研究结果表明,克深区段的构造样式依据翼间角的大小分为平缓褶皱和开阔褶皱两大类;结合断层组合形态,平缓褶皱细分出同冲、背冲和反冲平缓褶皱,开阔褶皱细分出同冲和背冲开阔褶皱。克深断裂以北的构造是开阔褶皱和平缓褶皱组合的叠瓦状断背斜,克深断裂以南的构造均为平缓褶皱断背斜的叠瓦构造。裂缝的分布与翼间角密切相关,开阔褶皱的张裂缝带厚度和分布范围比平缓褶皱大得多,断层对其周缘的裂缝分布存在一定影响。构造样式的重新划分为进一步研究不同构造样式断背斜的裂缝发育特征和成因机制等提供了基础。
Abstract:
The exploration and development practices in the Cretaceous Bashijiqike formation of the Kelasu tectonic belt in Kuqa depression reveal that the fractures are featured with vertical zonation, which are possibly constrained by neutral surfaces of anticlines. It is necessary to rebuild the structural style of the Kelasu tectonic belt because the present model for structural style classification cann’t explain the vertical zonation of fractures. Selecting the Keshen section of the Kelasu tectonic belt as the study area, taking the interlimb angle of fold as the main element and combining with the fault combination configuration, the paper rebuilds the subsalt structure styles of the Keshen section in the Kelasu tectonic belt on the basis of 3D seismic interpretation. The results show that the structural styles of the Keshen section can be divided into 2 types such as gentle fold and open fold according to the interlimb angle of fold; according to the fault combination configuration, the gentle fold is further divided into double-thrust gentle fold, back-thrust gentle fold and recoil gentle fold, and the open fold is divided into double-thrust and back-thrust open folds. The structures to the north of the Keshen fault are imbricate fault anticlines made up of open and gentle folds, and the structures to the south of the Keshen fault are imbricate structures of gentle-fold faulted anticline. The distribution of fractures is closely related to the interlimb angle, the thickness and the distribution range of tension fissure zones in the open folds are much larger than those in the gentle folds, and faults has an influence on the distribution of the fractures around them. The classification of the structural style provides a foundation for the further study on the fracture development and genetic mechanism of different structural styles

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更新日期/Last Update: 2019-01-22