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The Origin and Mechanism of Formation of Hydrocarbon Deposits of the Vietnamese Shelf
Russian Journal of Pacific Geology ( IF 0.8 ) Pub Date : 2020-10-08 , DOI: 10.1134/s1819714020050036
M. G. Leonov , V. Yu. Kerimov , R. N. Mustaev , Vu Nam Hai

Abstract

This paper presents the results of studies of the main factors that are responsible for the formation conditions and localization of oil and gas deposits within the Cenozoic sedimentary cover and Pre-Cenozoic granite basement of the Vietnamese shelf. Our structural–tectonic model of the Cuu Long Basin allows the identification of the formation conditions of regional and local structures with hydrocarbon (HC) deposits, mechanisms of origin of HC traps and reservoirs, the genesis of HCs, including those occurring in the basement rocks, and the possible mechanisms of migration and accumulation of HCs in the basement rocks. Abundant traps are real or potential HC reservoirs in the crystalline basement body. The structural–tectonic processes in the basement resulted in origination and evolution of positive morphostructures (domes and protrusions), whose cores are filled by disintegrated (granulated) basement rocks. For the interpretation of chronothermobaric conditions of origination and evolution of HC sources, formation conditions, and principles of occurrence of oil and gas deposits at the Vietnamese shelf we conducted 3D modeling of the generation and accumulation HC systems using basin modeling in PetroMod program software (Schlumberger, Ltd., United States). The studies of HCs–biomarkers of oils of the deposits of the Cuu Long Basin including those located in the crystalline basement showed similar biomarker parameters of oils and organic matter, which is evidence of the organic nature of the oil deposits of the basement at the Vietnamese shelf.



中文翻译:

越南架油气藏成因及成因机理

摘要

本文介绍了对越南陆架新生代沉积盖层和前新生代花岗岩基底内油气成藏条件和定位的主要因素进行研究的结果。我们的库隆盆地构造-构造模型可以识别出具有碳氢化合物(HC)沉积的区域和局部结构的形成条件,碳氢化合物圈闭和储层的成因机制,碳氢化合物的成因,包括基底岩中发生的那些。以及HCs在基底岩石中迁移和积累的可能机制。大量的陷阱是晶体基体内的真实或潜在的HC储集层。地下室的结构构造过程导致了正形态结构(穹顶和凸起)的起源和演化,其核心被崩解的(粒状的)基底岩石填充。为了解释HC来源的始生和演化的高温高压条件,形成条件以及越南架子上油气沉积的发生原理,我们使用PetroMod程序软件中的盆地建模(Schlumberger ,Ltd.,美国)。HCu-包括在结晶地下室中的库隆盆地沉积物的石油生物标志物的研究表明,石油和有机物的生物标志物参数相似,这证明了越南地下室石油沉积物的有机性质。架。为了解释HC来源的始生和演化的高温高压条件,形成条件以及越南架子上油气沉积的发生原理,我们使用PetroMod程序软件中的盆地建模(Schlumberger ,Ltd.,美国)。HCu-包括在结晶地下室中的库隆盆地沉积物的石油生物标志物的研究表明,石油和有机物的生物标志物参数相似,这证明了越南地下室石油沉积物的有机性质。架。为了解释HC来源的始生和演化的高温高压条件,形成条件以及越南架子上油气沉积的发生原理,我们使用PetroMod程序软件中的盆地建模(Schlumberger ,Ltd.,美国)。HCu-包括在结晶地下室中的库隆盆地沉积物的石油生物标志物的研究表明,石油和有机物的生物标志物参数相似,这证明了越南地下室石油沉积物的有机性质。架。根据越南架子上油气沉积的发生原理,我们使用PetroMod程序软件(美国Schlumberger,Ltd.)中的盆地建模对生成和累积HC系统进行了3D建模。HCu-包括在结晶地下室中的库隆盆地沉积物的石油生物标志物的研究表明,石油和有机物的生物标志物参数相似,这证明了越南地下室石油沉积物的有机性质。架。根据越南架子上油气沉积的发生原理,我们使用PetroMod程序软件(美国Schlumberger,Ltd.)中的盆地建模对生成和累积HC系统进行了3D建模。HCu-古隆盆地沉积物的石油生物标志物的研究,包括位于结晶基底中的生物标志物,显示出相似的石油和有机物生物标志物参数,这证明了越南人基底石油沉积物的有机性质。架。

更新日期:2020-10-11
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