Characteristics of parametamorphic rock reservoirs in Pingxi area, Qaidam Basin, NW China

Xia, Zhiyuan; Liu, Zhanguo; Li, Senming; Zhang, Yongshu; Wang, Bo; Tian, Mingzhi; Wu, Jin; Zou, Kaizhen

doi:10.1016/s1876-3804(19)30008-4

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…Based on previous studies 10 on the classification of metamorphic rock reservoir space and this study, the reservoir space of the metamorphic rock reservoir in the central paleo-uplift belt can be divided into the following four types: intergranular pores, dissolved pores, structural microfractures and weathering microfractures (Table 3 ). The main reservoir space in the chlorite schist is in the form of intergranular pores (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…It is undeniable that fractures have a very important impact on the gas production of metamorphic rock reservoirs. However, in addition to fractures, there are many pores and microfractures that are invisible to the naked eye and cannot be identified by image logging in metamorphic rock reservoirs 8 , 10 . Similar to shale, these microscopic pores and microfractures can also become reservoir spaces and flow channels for natural gas, and fracturing technology makes production of natural gas from smaller pores possible 11 .…”

Section: Introductionmentioning

confidence: 99%

“…Considerable controversy continues over the factors controlling the pore structure of metamorphic rock reservoirs. Xia et al propose that the degree of metamorphism has a great impact on reservoir properties 10 , and Zhu et al suggest that the lithology of metamorphic rocks is a core factor controlling reservoir formation and the preservation of reservoir space 13 . Han et al suggest that the main factors controlling metamorphic reservoir development are temperature, lithology, minerals, dissolution, faults, and paleogeomorphology 1 .…”

Section: Introductionmentioning

confidence: 99%

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Semiquantitative microscopic pore characterizations of the metamorphic rock reservoir in the central paleo-uplift belt, Songliao Basin

Zeng

Shan

Hao

et al. 2022

Sci Rep

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Currently, metamorphic rock is a common target for natural gas exploration, and reservoirs are the key factors restricting natural gas exploration and development in metamorphic rocks. The deep metamorphic rock gas reservoir in the central paleo-uplift of the northern Songliao Basin has good exploration and development potential. In this study, we use a combination of qualitative descriptions and quantitative analysis to comprehensively analyze the pore characteristics of the reservoir and explore the factors controlling the pore characteristics of the metamorphic rock reservoir in the central paleo-uplift belt of the Songliao Basin. The metamorphic rock reservoir in the central paleo-uplift belt contains three types of lithologies: chlorite schist, mica schist and mylonite, each with different protoliths and metamorphic histories. The results of high-pressure mercury intrusion and nitrogen adsorption indicate that the pore size distributions of the schist and mylonite differ. Compared with the mylonite, the schist has larger reservoir space, more heterogeneity, smaller pore size, larger specific surface area and larger adsorbed gas storage capacity. This paper also studies the formation process of the reservoir and divides it into four stages. Finally, this article discusses in detail the factors controlling the microscopic pore characteristics of metamorphic rock reservoirs in the central paleo-uplift belt; the metamorphic rock protolith is the most important controlling factor.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Semiquantitative microscopic pore characterizations of the metamorphic rock reservoir in the central paleo-uplift belt, Songliao Basin

Zeng

Shan

Hao

et al. 2022

Sci Rep

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“…9-c). In the Cretaceous period, when the Huoshiling Formation was deposited, during the low-angle subduction of the Paci c Plate towards the Asia-Europe Plate, basement faults became active 44 , and the Xuxi fault began to form (Fig. 9d) 45 .…”

Section: Formation Process Of the Metamorphic Rock Reservoirmentioning

confidence: 99%

Semiquantitative Characterizations And Controlling Factors of Microscopic Pore Characteristics of The Metamorphic Rock Reservoir In The Central Paleo-Uplift Belt, Songliao Basin

Zeng

Shan

Hao

et al. 2021

Preprint

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Currently, metamorphic rock is a common target for oil and gas exploration, and reservoirs are the key factors restricting hydrocarbon exploration and development in metamorphic rocks. The deep metamorphic rock gas reservoir in the central paleo-uplift of the northern Songliao Basin has good exploration and development potential. In this study, we use a combination of qualitative descriptions and quantitative analysis to comprehensively analyze the pore characteristics of the reservoir and explore the factors controlling the pore characteristics of the metamorphic rock reservoir in the central paleo-uplift belt of the Songliao Basin. The metamorphic rock reservoir in the central paleo-uplift belt contains three types of lithologies: chlorite schist, mylonite, and mica schist, each with different protoliths and metamorphic histories. The reservoir space can be divided into 4 pore types, and the reservoir space of each lithology is quite different. The results of high-pressure mercury intrusion and nitrogen adsorption indicate that the pore size distributions of the schist and mylonite differ. Compared with the schist, the mylonite has less reservoir space, stronger homogeneity, larger pore size, smaller specific surface area, more natural gas reservoir space and stronger natural gas adsorption capacity. This paper also studies the formation process of the reservoir and divides it into four stages. Finally, this article discusses in detail the factors controlling the microscopic pore characteristics of metamorphic rock reservoirs in the central paleo-uplift belt; the metamorphic rock protolith is the most important controlling factor.

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Reservoir rock typing and storage capacity of Mishrif Carbonate Formation in West Qurna/1 Oil Field, Iraq

Al-Dujaili

2023

Carbonates Evaporites

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Characteristics of parametamorphic rock reservoirs in Pingxi area, Qaidam Basin, NW China

Cited by 6 publications

References 9 publications

Semiquantitative microscopic pore characterizations of the metamorphic rock reservoir in the central paleo-uplift belt, Songliao Basin

Semiquantitative microscopic pore characterizations of the metamorphic rock reservoir in the central paleo-uplift belt, Songliao Basin

Semiquantitative Characterizations And Controlling Factors of Microscopic Pore Characteristics of The Metamorphic Rock Reservoir In The Central Paleo-Uplift Belt, Songliao Basin

Reservoir rock typing and storage capacity of Mishrif Carbonate Formation in West Qurna/1 Oil Field, Iraq

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