Physical modeling of complex lithofacies volcanic edifices and seismic characteristics

IF 1.6 3区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS Journal of Geophysics and Engineering Pub Date : 2023-10-09 DOI:10.1093/jge/gxad081
Da ZHANG, Yinghan QI, Tingdong XING, Zhiqi GUO, Lei CAO
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Abstract

Abstract The Songnan fault basin contains a significant distribution of basaltic volcanics, which serve as one of the primary types of reservoirs in the area. Volcanic formations exhibit notable distinctions when compared to conventional oil and gas reservoirs, and the precise seismic response mechanism of these formations remains uncertain. Hence, it is imperative to investigate the seismic response mechanism of volcanic formations to enhance the geophysical characterization capability of oil and gas reservoirs composed of igneous rock. The seismic physical simulation model method is utilised to obtain dependable data for investigating the seismic response mechanisms of volcanic structures. This is achieved by constructing intricate physical models of rocks and volcanic structures.Our team focused on the development of materials and processes for accurately modelling various rock and volcanic structures, and we successfully designed and produced a three-dimensional physical model representing volcanic structures in the Chaganhua area. Furthermore, we conducted thorough data acquisition and analysis to examine the seismic response characteristics and sensitive properties of different geological bodies. We can improve the accuracy of identifying different lithofacies of volcanic rocks by extracting different seismic attributes. This study presents a reliable approach for elucidating the seismic response mechanism of intricate rock and volcanic formations. It can also serve as a valuable resource for processing and interpreting seismic data in the specific study region. The conclusion that weak seismic reflection signals in volcanic rocks are effective signals rather than noise can be more conducive to accurate analysis and description of volcanic structures.
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复杂岩相火山构造的物理模拟与地震特征
摘要松南断陷盆地发育大量玄武质火山岩,是该区主要储层类型之一。与常规油气储层相比,火山岩储层表现出明显的差异,而这些储层的精确地震响应机制尚不确定。因此,研究火山岩储层地震响应机理,提高火成岩油气储层的地球物理表征能力势在必行。利用地震物理模拟模型方法,为火山构造地震反应机理的研究提供了可靠的数据。这是通过建立复杂的岩石和火山结构的物理模型来实现的。我们的团队专注于开发各种岩石和火山构造精确建模的材料和工艺,并成功地设计和制作了一个代表查干化地区火山构造的三维物理模型。此外,我们还进行了深入的数据采集和分析,研究了不同地质体的地震反应特征和敏感性。通过提取不同的地震属性,可以提高识别不同火山岩岩相的精度。该研究为阐明复杂岩石和火山构造的地震反应机制提供了可靠的途径。它也可以作为处理和解释特定研究区域地震资料的宝贵资源。火山岩中微弱的地震反射信号是有效信号而非噪声,这一结论更有利于火山构造的准确分析和描述。
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来源期刊
Journal of Geophysics and Engineering
Journal of Geophysics and Engineering 工程技术-地球化学与地球物理
CiteScore
2.50
自引率
21.40%
发文量
87
审稿时长
4 months
期刊介绍: Journal of Geophysics and Engineering aims to promote research and developments in geophysics and related areas of engineering. It has a predominantly applied science and engineering focus, but solicits and accepts high-quality contributions in all earth-physics disciplines, including geodynamics, natural and controlled-source seismology, oil, gas and mineral exploration, petrophysics and reservoir geophysics. The journal covers those aspects of engineering that are closely related to geophysics, or on the targets and problems that geophysics addresses. Typically, this is engineering focused on the subsurface, particularly petroleum engineering, rock mechanics, geophysical software engineering, drilling technology, remote sensing, instrumentation and sensor design.
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