塔里木盆地西南部和田河-马东地区多相变形及其对油气分布的影响

IF 2.7 3区 地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY
AAPG Bulletin Pub Date : 2024-04-01 DOI:10.1306/05032321079
Wei Wang, Hongwei Yin, Huiwen Xie, Dong Jia, Bin Wang, Gengxiong Yang, Haoyu Luo
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引用次数: 0

摘要

塔里木盆地西南部的和田河-马东地区包含两个推力系统:西北部的新生代马扎塔格推力带和东南部的古生代马东褶皱推力带。这两个构造带的变形传播方向几乎垂直,在它们之间有一个狭窄的相互作用带。已探明的碳氢化合物与该地区经历的构造变形密切相关,并沿着马扎塔格构造的断层系统和狭窄的相互作用带受到限制。根据地震解释和模拟建模,本研究构建了两个推力系统和相互作用带的结构模型。然后,讨论了油气区分布受限的控制因素。研究结果表明,马扎塔格构造是一种受基底控制的构造,而马东褶皱-推力带则反映了一种以中寒武统盐为脱离层的薄层构造样式。互动带受走向滑动断层控制,原有结构和盐层影响了其结构几何。互动带的基底连续推断断层和走向滑动断层切割盐层,为烃类从盐下源岩到盐上捕集层提供了通道,从而解释了黑天河-马东地区烃类分布受限的原因。这项研究有助于深入了解发生多相变形的地区及其对油气分布的控制。研究结果可能有助于了解此类构造。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multiphase deformation and its impacts on hydrocarbon distribution in the Hetianhe–Madong region, southwestern Tarim Basin
The Hetianhe–Madong region of the southwestern Tarim Basin contains two thrust systems: the Cenozoic Mazhatage thrust belt in the northwest and the Paleozoic Madong fold-thrust belt in the southeast. The two structural belts have almost vertical propagation directions of deformation and abut in a narrow interaction zone between them. Proven hydrocarbons are closely related to the structural deformation experienced in this region and restricted along the fault system of the Mazhatage structure and the narrow interaction zone. Based on seismic interpretations and analogue modeling, structural models were constructed in this study for the two thrust systems and the interaction zone. Then, the controlling factors of the restricted distribution of hydrocarbon plays are discussed. The results suggest that the Mazhatage structure is a basement-controlled structure, whereas the Madong fold-thrust belt reflects a thin-skinned structural style with a middle Cambrian salt as the detachment layer. The interaction zone is controlled by a strike-slip fault, and the preexisting structures and the salt layer affect its structural geometry. The basement-continued thrust fault and the strike-slip fault of the interaction zone cut through the salt layer, providing conduits for hydrocarbons from subsalt source rocks to suprasalt traps, explaining the restricted hydrocarbon distribution in the Hetianhe–Madong region. This study provides insight into regions undergoing multiphase deformation and its control on hydrocarbon distribution. The results may be helpful for understanding such structures.
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来源期刊
AAPG Bulletin
AAPG Bulletin 工程技术-地球科学综合
CiteScore
6.60
自引率
11.40%
发文量
73
审稿时长
4.8 months
期刊介绍: While the 21st-century AAPG Bulletin has undergone some changes since 1917, enlarging to 8 ½ x 11” size to incorporate more material and being published digitally as well as in print, it continues to adhere to the primary purpose of the organization, which is to advance the science of geology especially as it relates to petroleum, natural gas, other subsurface fluids, and mineral resources. Delivered digitally or in print monthly to each AAPG Member as a part of membership dues, the AAPG Bulletin is one of the most respected, peer-reviewed technical journals in existence, with recent issues containing papers focused on such topics as the Middle East, channel detection, China, permeability, subseismic fault prediction, the U.S., and Africa.
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