X-ray computed microtomography revealing the effects of volcanic, alteration, and burial processes on the pore structure of rocks from unconventional reservoirs (Songliao Basin, NE China)

被引:6
作者
Liu, Chaoyang [1 ,2 ,3 ]
Buono, Gianmarco [4 ]
Pappalardo, Lucia [4 ]
Shan, Xuanlong [1 ,2 ]
Yi, Jian [1 ,2 ]
Shi, Yunqian [1 ,2 ]
Ventura, Guido [3 ,5 ]
机构
[1] Jilin Univ, Coll Earth Sci, Jianshe St 2199, Changchun 130061, Peoples R China
[2] Minist Land & Resources, Key Lab Mineral Resources Evaluat Northeast Asia, Changchun 130061, Peoples R China
[3] Ist Nazl Geofis & Vulcanol, Via Vigna Murata 605, I-00143 Rome, Italy
[4] Ist Nazl Geofis & Vulcanol, Osservatorio Vesuviano, I-80124 Naples, Italy
[5] CNR, Ist Studio Impatti Antrop & Sostenibil Ambiente Ma, I-91020 Capo Granitola, TP, Italy
来源
GEOENERGY SCIENCE AND ENGINEERING | 2023年 / 226卷
基金
中国国家自然科学基金;
关键词
Unconventional volcanic reservoir; Pore structure; Morphometry; Micro; -CT; Porosity-permeability; CHANGLING FAULT DEPRESSION; GAS; PERMEABILITY; EXPLORATION; DISCOVERY; GEOMETRY; POROSITY; SYSTEM; BUBBLE;
D O I
10.1016/j.geoen.2023.211781
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The pore structure and storage volume of rocks are crucial parameters to evaluate the favorability of hydrocarbon reservoirs. The unconventional volcanic reservoirs in the Songliao Basin (NE China) include lava and pyroclastics of different composition. Here we apply the X-ray computed microtomography (micro-CT) to reconstruct the 3D pore space of selected samples (basaltic lava, rhyolitic lava and rhyolitic pyroclastics) at depths between 2283 and 3757 m. We reconstruct the morphology and size distribution of the pores. The pore structure records the effects of superimposed volcanic, alteration, and compaction-burial processes. This latter process produces fractures in the rhyolitic pyroclastic rocks. The basaltic lavas have larger, connected pores filled by alteration minerals with a prolate shape, and unconnected, smaller, blade-like, empty pores. The hydrothermal alteration reduces the porosity and the rock is impermeable being the smaller voids unconnected. The basaltic lavas are good cap rocks but very poor reservoir rocks. The rhyolitic lava flows and pyroclastics, some of which placed in the gas zone of the Songliao reservoirs, show prevailing interconnected fractures due to burial processes and minor pores around crystals formed by syn-eruptive heterogeneous gas nucleation. The pore connectivity is ensured by the fractures and the permeability may be high, also depending on the volume, more than on the number, of the pores. Rhyolites may be good reservoir rocks. We search for possible relationships between porosity and permeability and do not find a clear relation between these two parameters as well as between depth and permeability. Although our analysis is valid within a length scale between about 20 mu m and 1 cm, the methodological approach used here can be extended to other reservoirs to study the evolution of the pore systems as a function of the different processes affecting the volcanic rocks.
引用
收藏
页数:13
相关论文
共 48 条
  • [1] Elongation, flatness and compactness indices to characterise particle form
    Angelidakis, Vasileios
    Nadimi, Sadegh
    Utili, Stefano
    [J]. POWDER TECHNOLOGY, 2022, 396 : 689 - 695
  • [2] Effects of progressive burial on matrix porosity and permeability of dolostones in the foreland basin of the Alpine Orogen, Switzerland
    Aschwanden, Lukas
    Diamond, Larryn W.
    Adams, Arthur
    [J]. MARINE AND PETROLEUM GEOLOGY, 2019, 100 : 148 - 164
  • [3] An assessment of hydrothermal alteration in the Santiaguito lava dome complex, Guatemala: implications for dome collapse hazards
    Ball, Jessica L.
    Calder, Eliza S.
    Hubbard, Bernard E.
    Bernstein, Marc L.
    [J]. BULLETIN OF VOLCANOLOGY, 2013, 75 (01) : 1 - 18
  • [4] Bear J., 2013, Dynamics of Fluids in Porous Media, P757
  • [5] PORE SYSTEM QUANTIFICATION AND CHARACTERIZATION IN VOLCANIC ROCKS: A CASE STUDY FROM THE LOWER CRETACEOUS SERRA GERAL GROUP, PARANa BASIN, SOUTHERN BRAZIL
    Becker, M.
    Lima, E. F.
    Waichel, B. L.
    Mantovani, I. F.
    [J]. JOURNAL OF PETROLEUM GEOLOGY, 2019, 42 (03) : 301 - 317
  • [6] Pore geometry as a control on rock strength
    Bubeck, A.
    Walker, R. J.
    Healy, D.
    Dobbs, M.
    Holwell, D. A.
    [J]. EARTH AND PLANETARY SCIENCE LETTERS, 2017, 457 : 38 - 48
  • [7] Spatial and temporal distributions of the late Mesozoic volcanic successions and their controlling effects on the Changling fault depression of the Songliao Basin, northeast China
    Chang, Wenbo
    Shan, Xuanlong
    Yi, Jian
    Du, Tiantian
    Qu, Yue
    [J]. CANADIAN JOURNAL OF EARTH SCIENCES, 2017, 54 (12) : 1194 - 1213
  • [8] Dissolution pores in shale and their influence on reservoir quality in Damintun Depression, Bohai Bay Basin, East China: Insights from SEM images, N2 adsorption and fluid-rock interaction experiments
    Chen, Xiu
    Qu, Xiyu
    Xu, Shouyu
    Wang, Weiming
    Li, Shunming
    He, Hui
    Liu, Yang
    [J]. MARINE AND PETROLEUM GEOLOGY, 2020, 117
  • [9] Improved method for effective rock microporosity estimation using X-ray microtomography
    Cid, H. E.
    Carrasco-Nunez, G.
    Manea, V. C.
    [J]. MICRON, 2017, 97 : 11 - 21
  • [10] Degassing and gas percolation in basaltic magmas
    Colombier, Mathieu
    Vasseur, Jeremie
    Houghton, Bruce F.
    Caceres, Francisco
    Scheu, Bettina
    Kueppers, Ulrich
    Thivet, Simon
    Gurioli, Lucia
    Montanaro, Cristian
    Soldati, Arianna
    Di Muro, Andrea
    Dingwell, Donald B.
    [J]. EARTH AND PLANETARY SCIENCE LETTERS, 2021, 573