Effect of Magmatic Intrusion on In Situ Stress Distribution in Deep Coal Measure Strata: A Case Study in Linxing Block, Eastern Margin of Ordos Basin, China

Pu, Yifan; Li, Song; Tang, Dazhen; Chen, Shida

doi:10.1007/s11053-022-10099-8

Cited by 11 publications

(11 citation statements)

References 77 publications

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“…The structure is simple, and the overall structure is NE -SW monoclinic structure. The central part of the research area exhibits an uplifted formation due to magmatic intrusions, accompanied by the radial development of faults [21][22][23][24] . The Paleozoic strata in the research area is developed (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…1b), and a large amount of unconventional natural gas Figure 1. Geological characteristics of research area 21 .…”

Section: Geological Settingmentioning

confidence: 99%

“…Considering status of the Linxing Block as a nascent frontier for deep CBM exploration and development, the paucity of hydraulic fracturing data poses a challenge in characterizing the spatial variation of the in-situ stress field. Therefore, an in-situ stress calculation model that takes into account rock mechanical properties and tectonic strains is employed to estimate the horizontal maximum stress (S Hmax ) and horizontal minimum stress (S hmin ) 21,39 .…”

Section: In-situ Stress Distribution Characteristicsmentioning

confidence: 99%

“…The Ordos Basin is a large-scale superimposed basin that developed on the North China Craton. Its formation is related to the North China epicontinental basin, the Late Paleozoic sea-land interaction basin, and the Triassic and Jurassic super-large lake basins 21 . The structure in the basin is simple and stable, and its edge structure is active.…”

Section: Geological Settingmentioning

confidence: 99%

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Evaluation of recoverable potential of deep coalbed methane in the Linxing Block, Eastern Margin of the Ordos Basin

Chen,

Li,

Tang

et al. 2024

Sci Rep

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The deep coalbed methane (CBM) resources are widely developed in the Linxing Block. However, the evaluation of CBM geological areas suitable for CBM exploitation remains unexplored, hindering further development. This research optimizes the key geological parameters that influence the development of deep CBM from the perspectives of resource and development conditions. The evaluation system for deep CBM recoverability has been established, and the multi-fuzzy evaluation method has been used to perform the quantitative evaluation of recoverability. The results indicate that the resource conditions of No.8 + 9 coal seam are superior to those of No.4 + 5 coal seam. Favorable resource conditions are predominantly concentrated in the northeast and specific southern portions of the research area. Favorable development conditions for both coal seams are mostly concentrated in the northeastern area. Based on the classification standard of recoverable favorable areas, the Level II area is crucial for the development of No.4 + 5 coal seam. This area is primarily distributed in the northeast of the research area., Both Level I and Level II areas for the No. 8 + 9 coal seam are situated in the northeast. The Level III area is earmarked for deep CBM production and shows potential for exploration. Further analysis reveals that the resource conditions in the favorable area are generally superior to the development conditions. These areas are classified as Class A, including categories such as I-A, II-A, and III-A, indicating relatively complex reservoir transformation.

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Section: Geological Settingmentioning

confidence: 99%

“…1b), and a large amount of unconventional natural gas Figure 1. Geological characteristics of research area 21 .…”

Section: Geological Settingmentioning

confidence: 99%

Section: In-situ Stress Distribution Characteristicsmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of recoverable potential of deep coalbed methane in the Linxing Block, Eastern Margin of the Ordos Basin

Chen,

Li,

Tang

et al. 2024

Sci Rep

Self Cite

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show abstract

“…This assumption helps simplify the problem and realize large-scale fracturing simulation. − However, this assumption ignores the effect of the stratum property difference on the fracture propagation. It is well-known that the stratum property difference significantly affects the behavior of hydraulic fracture propagation in low-permeability reservoirs, such as the fracture propagation range, breakdown pressure, and interaction between wells. , Therefore, the establishment of a large-scale layered model, which can accurately characterize stratum properties, is of great importance for the study of hydraulic fracture propagation mechanisms in low-permeability reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of Hydraulic Fracture Propagation and Multi-well Effect during Multiple Vertical Well Fracturing in Layered Reservoirs with Low Permeability

Yang,

Li,

et al. 2023

Energy Fuels

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Segmental-layered modeling and fine grid division methods were proposed to construct a three-dimensional largescale layered geologic model and reveal the mechanisms of hydraulic fracture propagation and the well spacing effect in multi-well fracturing in layered reservoirs with low permeability. The hydraulic fracture propagation in layered reservoirs under multi-well fracturing was simulated using a continuum-based discrete element numerical method. The effects of the stratum property difference, in situ horizontal stress difference (HSD), and well spacing on breakdown pressures and fracture propagation were analyzed. The concept of "extension ellipse" was proposed to describe the propagation morphology of fractures, which addresses the difficulty of accurately characterizing the propagation morphology of fractures at the geologic scale. The influence range of the multiwell effect in layered reservoirs was also determined, and the effect mechanisms of stress amplification and attraction and repulsion between fractures on the behavior of hydraulic fracture propagation were revealed. Layered reservoirs and higher in situ HSD restrict the development of hydraulic fractures but greatly reduce the breakdown pressures. The multi-well fracturing mode changes the stress field distribution around the wells and weakens the effects of in situ HSD on fracture propagation. In comparison to homogeneous reservoirs, the range of the multi-well effect in the layered reservoirs is relatively small. At the fracturing site, the well spacing should be appropriately increased in the direction of the maximum horizontal stress and should be reduced in the direction of minimum horizontal stress, helping hydraulic fracture development and improving the fracturing stimulation effect in layered reservoirs. This study addresses the deficiency of considering stratum property differences in the existing large-scale fracturing models, and the results provide a reference for the optimization and design of fracturing simulation in the layered reservoirs with low permeability.

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Numerical simulation study on the effectiveness of temporary plugging and fracturing in deep coal seam to construct complex fracture network

Tang

et al. 2023

Geoenergy Science and Engineering

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Effect of Magmatic Intrusion on In Situ Stress Distribution in Deep Coal Measure Strata: A Case Study in Linxing Block, Eastern Margin of Ordos Basin, China

Cited by 11 publications

References 77 publications

Evaluation of recoverable potential of deep coalbed methane in the Linxing Block, Eastern Margin of the Ordos Basin

Evaluation of recoverable potential of deep coalbed methane in the Linxing Block, Eastern Margin of the Ordos Basin

Mechanisms of Hydraulic Fracture Propagation and Multi-well Effect during Multiple Vertical Well Fracturing in Layered Reservoirs with Low Permeability

Numerical simulation study on the effectiveness of temporary plugging and fracturing in deep coal seam to construct complex fracture network

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