拉扎克断层在控制伊朗扎格罗斯外法尔斯地区沉积盆地和油气系统中的作用

IF 1 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS Geotectonics Pub Date : 2023-12-10 DOI:10.1134/s0016852123060055
M. Hosseinpour, M. Arian, Z. Maleki, M. Ghorashi
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引用次数: 0

摘要

摘要 法尔斯分盆地位于扎格罗斯褶皱推覆带,拥有大量油气储量,尤其是天然气。该地区存在大量基底断层和走向滑动,基底块体的抬升和沉积中心被认为是控制沉积盆地沉积前后和沉积同步的有效因素。本研究评估了外法尔斯地区拉扎克断层盆地作为控制沉积盆地有效因素的作用。为此,研究人员通过提供合成沉积地层盆地底层的等距图和三维模型,调查了拉扎克断层的活动情况及其在增加或减少该地区和邻近反斜的碳氢化合物潜力方面所起的作用。结果表明,在达兰、加德万、达里安和卡兹杜米地层沉积时期,该断层并不活跃,而在沉积时期,康干、达什塔克、希特、法赫连、拉凡、伊拉姆和帕巴德地层仍然活跃,并控制着盆地的沉积。此外,由于拉扎克断层的作用,基底地块发生抬升和沉积,导致马尔兹、瓦拉维、塔布纳克、德诺特、哈尔法尼、奇鲁和马达尔等反断裂带中德拉姆组的油气潜力增加。而研究区域的东北部以及 Bonashkatu、Pishvar、Bavush、Gavbast 和 Gezzeh 等反断裂则不太重要。此外,由于 Razak 断层的影响,Khami 和 Bangestan 储层也没有油气潜力。
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The Role of Razak Fault in Controlling the Sedimentary Basin and Hydrocarbon Systems in External Fars Region, Zagros, Iran

Abstract

Fars sub-basin is located in the Zagros fold-thrust belt and includes a large number of hydrocarbon reserves, especially gas. The existence of numerous basement faults and strike-slip in this region along with the uplift and depocenter of basement blocks has been considered effective factors in controlling sedimentary basins before, after, and synchronous with sedimentation. In this study, the role of the Razak fault basin in the external Fars area as an effective factor in controlling the sedimentary basin was evaluated. For this purpose, by providing isopach maps and 3D modeling from the basin floor at synsedimentary formations, the activity of the Razak fault along with its role in increasing or decreasing the hydrocarbon potential of the region and adjacent anticlines, was investigated. The results show that the inactivity of this fault at the sedimentation time of the Dalan, Gadvan, Darian, and Kazhdumi formations, while at the deposition time, the formations of Kangan, Dashtak, Hith, Fahlian, Laffan, Ilam, and Pabadeh remained active and controlled the sedimentation in the basin. Also, the uplift and depocenter of the basement blocks occurred to the Razak fault’s performance, caused an increase in the hydrocarbon potential of the Dehram Group in the anticlines of Marz, Varavi, Tabnak, Dehnow, Khalfani, Chiru, and Madar. While the northeastern part of the study area and the anticlines of Bonashkatu, Pishvar, Bavush, Gavbast, and Gezzeh are less important. In addition, Khami and Bangestan reservoirs are also without hydrocarbon potential due to the Razak fault’s performance.

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来源期刊
Geotectonics
Geotectonics 地学-地球化学与地球物理
CiteScore
1.90
自引率
9.10%
发文量
28
审稿时长
3 months
期刊介绍: Geotectonics publishes articles on general and regional tectonics, structural geology, geodynamics, and experimental tectonics and considers the relation of tectonics to the deep structure of the earth, magmatism, metamorphism, and mineral resources.
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