Genetic mechanism and distribution characteristics of Jurassic-Cretaceous secondary reservoirs in the hinterland of Junggar Basin

被引：0
|
作者：
Liu G. [1 ]
Wei Y. [1 ]
Chen G. [1 ]
Jia K. [2 ]
Gong D. [1 ]
Wang F. [2 ]
Sun J. [2 ]
Zhu F. [3 ]
Ma W. [1 ]
机构：
[1] PetroChina Research Institute of Petroleum Exploration and Development, Beijing
[2] Research Institute of Petroleum Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay, 834000, Xinjiang
[3] Urumqi Branch, Bureau of Geophysical Prospecting Research Institute, China National Petroleum Corporation, Urumqi, 830016, Xinjiang
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2019年 / 40卷 / 08期
关键词：
Accumulation period; Cretaceous; Hinterland of Junggar Basin; Jurassic; Primary reservoir; Secondary reservoir; Transport system;
D O I：
10.7623/syxb201908003
中图分类号：
学科分类号：
摘要：
A large number of secondary reservoirs are developed in the hinterland of Junggar Basin, characterized by shallow burial depth, good physical properties, fast production and high yield, as a key target for prospecting high-efficient reservoirs. Based on the homogeneous temperature analysis of fluid inclusions, in combination with the recovered burial and thermal evolution history, it has been clarified that the Early Cretaceous was the key period for the development of the Jurassic-Cretaceous primary oil and gas reservoirs in Junggar Basin, and the Late Paleogene was the accumulation period when hydrocarbon were adjusted to secondary reservoirs. By reconstructing the Jurassic structure in Early Cretaceous (primary hydrocarbon accumulation period) and analyzing the spatial-temporal coupling relationship of hydrocarbon accumulation elements, the grains containing oil inclusions and the quantitative grain fluorescence for reservoirs, it has been discovered that Mosuowan, Lunan and Luliang nose-like plunging anticlines were the main accumulation areas of the Jurassic primary reservoir. Based on the distribution of primary reservoirs and the tectonic features in Late Paleogene (secondary hydrocarbon adjustment period), this study deeply analyzes the genetic mechanism and transport factors of the Jurassic-Cretaceous secondary reservoirs in the hinterland of Junggar Basin, constructs four types of transport systems of secondary reservoirs, identifies the action areas, accumulation positions, target types and control factors of various transport systems, and establishes the accumulation patterns of secondary reservoirs. Under the guidance of the patterns and the difference of the transport system, the Jurassic-Cretaceous secondary reservoirs are divided into four types of accumulation areas, of which the Shidong uplift and the Shinan nose-like uplift with relatively low exploration are the key zones of high-efficient secondary reservoirs for future exploration. © 2019, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
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页码：914 / 927
页数：13
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