秋里塔格构造带盐下构造层变形特征及油气勘探潜力

doi:10.7657/XJPG20200402

摘要/Abstract

摘要：

秋里塔格构造带位于库车坳陷中部,受南天山造山作用的影响,发育一系列冲断构造,具明显的分层变形特征。依据地面露头和地震资料,秋里塔格构造带以古近系库姆格列木群及新近系吉迪克组膏盐岩为中心,可划分为盐上构造层、膏盐岩构造层和盐下构造层;受挤压作用,膏盐岩差异流动,在地表形成多排线性褶皱带,盐上构造层则发育逆冲推覆及反冲构造,而盐下构造层的变形特征主要受控于挤压应力和古生代古隆起,具有明显的分段性。中秋—东秋段位于新和—牙哈古隆起北坡,盐下构造层发育与克深构造带相似的冲断构造,可形成幅度高、规模较大的断背斜圈闭,油气勘探潜力大;佳木—西秋段位于温宿和西秋古生代古隆起之上,盐下构造层不发育冲断构造,盐下圈闭以低幅度断背斜和断块为主,规模不大,勘探潜力相对较小。

关键词: 塔里木盆地, 库车坳陷, 秋里塔格构造带, 冲断构造, 膏盐岩, 构造分层, 盐下构造层, 油气勘探潜力

Abstract:

Qiulitage structural belt is located on the central part of Kuqa depression. Influenced by the orogenesis of the southern Tianshan Mountain, a series of thrust structures are developed in Qiulitage structural belt which has significant layered deformation characteristics. Based on the data of field survey and seismic interpretation, and taking the Paleogene Kumugeliemu group and the Neogene Jidike formation in Qiulitage structural belt as the main objectives, the Qiulitage structural belt is classified into above-salt layer, salt layer and subsalt layer. Due to the compression, the differential flow deformation of the gypsum-salt rock resulted in the forming of rows of linear folded belts on the surface, thrust nappe structures and recoil structures are developed in the above-salt layers, and the deformation of subsalt layer is mainly controlled by compressional stress and Paleozoic paleo-uplift, showing an obvious segmentation feature. In the central and eastern parts of Qiulitage structural belt which are located on the northern slope of Xinhe—Yaha paleo-uplift, the thrust structures similar to Keshen structural belt are developed in the subsalt layers where large-scale high-amplitude faulted anticline traps formed with great petroleum exploration potential. In the Jiamu—Xiqiu segment which is located on the Wensu-Xiqiu Paleozoic paleo-uplift, thrust structures cannot be found in the subsalt layer, and the subsalt traps are dominated by low-amplitude faulted anticline and faulted block, showing relatively small exploration potential.

Key words: Tarim basin, Kuqa depression, Qiulitage structural belt, thrust structure, gypsum-salt rock, structural zonation, subsalt layer, petroleum exploration potential

中图分类号:

TE122.32

谢会文, 罗浩渝, 章学岐, 段云江, 张文, 谢亚妮. 秋里塔格构造带盐下构造层变形特征及油气勘探潜力[J]. 新疆石油地质, 2020, 41(4): 388-393.

XIE Huiwen, LUO Haoyu, ZHANG Xueqi, DUAN Yunjiang, ZHANG Wen, XIE Yani. Structural Deformation and Petroleum Exploration Potential of Subsalt Layer in Qiulitage Structural Belt, Kuqa Depression[J]. Xinjiang Petroleum Geology, 2020, 41(4): 388-393.

图/表 5

参考文献 21

[1]	杜金虎, 田军, 李国欣, 等. 库车坳陷秋里塔格构造带的战略突破与前景展望[J]. 中国石油勘探, 2019,24(1):16-23.
	DU Jinhu, TIAN Jun, LI Guoxin, et al. Strategic breakthrough and prospect of Qiulitag structural belt in Kuqa depression[J]. China Petroleum Exploration, 2019,24(1):16-23.
[2]	田军. 塔里木盆地油气勘探成果与勘探方向[J]. 新疆石油地质, 2019,40(1):1-11.
	TIAN Jun. Petroleum exploration achievements and future targets of Tarim basin[J]. Xinjiang Petroleum Geology, 2019,40(1):1-11.
[3]	杨海军, 李曰俊, 师骏, 等. 南天山晚新生代褶皱冲断带构造特征[J]. 第四纪研究, 2010,30(5):1 030-1 043.
	YANG Haijun, LI Yuejun, SHI Jun, et al. Tectonic characteristics of the Late Cenozoic south Tianshan fold-thrust belt[J]. Quaternary Sciences, 2010,30(5):1 030-1 043.
[4]	李勇, 漆家福, 师骏, 等. 塔里木盆地库车坳陷中生代盆地性状及成因分析[J]. 大地构造与成矿学, 2017,41(5):829-842.
	LI Yong, QI Jiafu, SHI Jun, et al. Characteristics of Mesozoic basin in Kuqa depression,Tarim basin[J]. Geotectonica et Metallogenia, 2017,41(5):829-842.
[5]	卢华复, 贾东, 陈楚铭, 等. 库车新生代构造性质和变形时间[J]. 地学前缘, 1999,6(4):215-221.
	LU Huafu, JIA Dong, CHEN Chuming, et al. Nature and timing of the Kuqa Cenozoic structures[J]. Earth Science Frontiers, 1999,6(4):215-221.
[6]	徐振平, 谢会文, 李勇, 等. 库车坳陷克拉苏构造带盐下差异构造变形特征及控制因素[J]. 天然气地球科学, 2012,23(6):1 034-1 038.
	XU Zhenping, XIE Huiwen, LI Yong, et al. Characteristics and controlling factors of the subsalt differential structure in the Kelasu structural belt,Kuqa depression[J]. Natural Gas Geoscience, 2012,23(6):1 034-1 038.
[7]	苗继军, 贾承造, 王招明, 等. 秋里塔格构造带构造分段特征与油气成藏[J]. 石油勘探与开发, 2004,31(6):20-24.
	MIAO Jijun, JIA Chengzao, WANG Zhaoming, et al. Structural segmentation and reservoir formation along the Qiulitage anticline belt of Kuche thrust belt,Tarim basin[J]. Petroleum Exploration and Development, 2004,31(6):20-24.
[8]	余海波, 漆家福, 师俊, 等. 库车坳陷盐下构造对盐上盖层变形的影响因素分析[J]. 地质科学, 2015,50(1):50-62. doi: 10.3969/j.issn.0563-5020.2015.03
	YU Haibo, QI Jiafu, SHI Jun, et al. Basement fault activities have influenced on caprock tectonic deformation in Kuqa depression[J]. Chinese Journal of Geology, 2015,50(1):50-62.
[9]	管树巍, 陈宁华, 徐峰, 等. 库车坳陷秋里塔格褶皱带几何学和运动学特征与油气圈闭[J]. 石油学报, 2003,24(6):30-34.
	GUAN Shuwei, CHEN Ninghua, XU Feng, et al. Properties of geometry and kinematics related to hydrocarbon traps in Qiulitag anticline zone of Kuqa depression[J]. Acta Petrolei Sinica, 2003,24(6):30-34.
[10]	余一欣, 汤良杰, 王清华, 等. 受盐层影响的前陆褶皱–冲断带构造特征:以库车秋立塔克构造带为例[J]. 石油学报, 2005,26(4):1-11.
	YU Yixin, TANG Liangjie, WANG Qinghua, et al. Structural features of foreland fold-thrust belt influenced by salt beds:taking Qiulitake structural belt as an example[J]. Acta Petrolei Sinica, 2005,26(4):1-11.
[11]	王清华, 杨明慧, 吕修祥. 库车褶皱冲断带秋里塔格构造带东、西分段构造特征与油气聚集[J]. 地质科学, 2004,39(4):523-531.
	WANG Qinghua, YANG Minghui, LÜ Xiuxiang. Features of structural segmentation and accumulation of oil and gas in the Qiulitage structural belt,Kuqa fold-and-thrust belt[J]. Chinese Journal of Geology, 2004,39(4):523-531.
[12]	韩志锐, 曾联波, 高志勇. 库车前陆盆地秋里塔格构造带东、西段构造变形与储层物性的差异性[J]. 天然气地球科学, 2014,25(4):508-515.
	HAN Zhirui, ZENG Lianbo, GAO Zhiyong. Difference of structural deformation and reservoir physical property in Qiulitage structural belt of Kuqa foreland basin[J]. Natural Gas Geoscience, 2014,25(4):508-515.
[13]	汪新, 唐鹏程, 谢会文, 等. 库车坳陷西段新生代盐构造特征及演化[J]. 大地构造与成矿学, 2009,33(1):57-65.
	WANG Xin, TANG Pengcheng, XIE Huiwen, et al. Cenozoic salt structures and evolution in the western Kuqa depression,Tarim basin[J]. Geotectonica et Metallogenia, 2009,33(1):57-65.
[14]	吴珍云, 尹宏伟, 汪新, 等. 库车坳陷西段褶皱—冲断带前缘盐底辟构造特征及形成机制[J]. 南京大学学报(自然科学), 2015,51(3):612-625.
	WU Zhenyun, YIN Hongwei, WANG Xin, et al. The Structural features and formation mechanism of exposed salt diapirs in the front of fold-thrust belt,western Kuqa depression[J]. Journal of Nanjing University(Natural Sciences), 2015,51(3):612-625.
[15]	李世琴, 汪新, 陈宁华. 南天山库车秋里塔格构造带中段构造结变形特征和变形机理[J]. 地质科学, 2009,44(3):945-956.
	LI Shiqin, WANG Xin, CHEN Ninghua. Structural characters and deformation mechanisms of middle segment of Qiulitag anticline zone in Kuqa fold-and-thrust belt,southern Tianshan mountain[J]. Chinese Journal of Geology, 2009,44(3):945-956.
[16]	谢会文, 李勇, 漆家福, 等. 库车坳陷中部构造分层差异变形特征和构造演化[J]. 现代地质, 2012,26(4):682-690.
	XIE Huiwen, LI Yong, QI Jiafu, et al. Differential structural deformation and tectonic evolution in the middle part of Kuqa depression[J]. Geoscience, 2012,26(4):682-690.
[17]	徐振平, 赵博, 汪新, 等. 库车坳陷东秋里塔格构造带隐伏构造定量化计算[J]. 石油学报, 2016,37(3):311-317.
	XU Zhenping, ZHAO Bo, WANG Xin, et al. Quantitative calculation on buried structure of eastern Qiulitage structural belt,Kuqa dpression[J]. Acta Petrolei Sinica, 2016,37(3):311-317.
[18]	汪伟, 尹宏伟, 周鹏, 等. 塔里木盆地含盐褶皱冲断带变形特征与变形机制[J]. 新疆石油地质, 2019,40(1):68-73.
	WANG Wei, YIN Hongwei, ZHOU Peng, et al. Deformation characteristics and mechanism of salt-related fold thrust belt in Tarim basin[J]. Xinjiang Petroleum Geology, 2019,40(1):68-73.
[19]	张欣欣, 陶小晚, 杨敏, 等. 东秋里塔格构造带构造特征及油气勘探区带[J]. 地质与勘探, 2014,50(6):1 190-1 197.
	ZHANG Xinxin, TAO Xiaowan, YANG Min, et al. Structural features of eastern Qiulitage tectonic belt and its hydrocarbon exploration implication[J]. Geology and Exploration, 2014,50(6):1 190-1 197.
[20]	金文正, 汤良杰, 万桂梅, 等. 库车前陆盆地东秋里塔格区带盐相关构造特征[J]. 石油学报, 2007,28(3):8-12.
	JIN Wenzheng, TANG Liangjie, WAN Guimei, et al. Characteristics of salt-related tectonics in the eastern Qiulitage tectonic belt of Kuche foreland basin[J]. Acta Petrolei Sinica, 2007,28(3):8-12.
[21]	杨敏, 赵一民, 闫磊, 等. 塔里木盆地东秋里塔格构造带构造特征及其油气地质意义[J]. 天然气地球科学, 2018,29(6):826-833.
	YANG Min, ZHAO Yimin, YAN Lei, et al. Structural features of the eastern Qiulitage tectonic belt and petroleum geological significance[J]. Natural Gas Geoscience, 2018,29(6):826-833.