Determination of fault damage zones in sandstone rocks using numerical models and statistical analyses

Congro, Marcello; Zanatta, Alexandre S.; Nunes, Karoline; Quevedo, Roberto; Carvalho, Bruno R.B.M.; Roehl, Deane

doi:10.1016/j.gete.2023.100495

Cited by 1 publication

(1 citation statement)

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“…Numerical simulation methods, utilizing geological data, seismic data, and drilling data such as borehole logs and core samples, can provide a quantitative analysis of geostress field perturbations caused by faults. The finite element method and the finite difference method are the main numerical simulation methods for geostress field disturbances near fault zones [15][16][17][18][19][20]. The discrete element method can also be used to analyze the relationship between fault activity and three-dimensional geostress [21].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Fault Influence on Geostress Perturbation Based on Fault Model Test

Tian,

Qiao,

Zhang

et al. 2024

Processes

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The distribution of the geostress field in reservoirs holds significant implications for the precise exploration and efficient development and utilization of oil and gas resources, especially in deep strata regions where faults are prevalent. Geological structural movements in these deep strata regions exacerbate the complexity of geostress field distributions. To elucidate the perturbation of the geostress field in deep reservoirs caused by faults, this study initially conducted a series of physical model tests on single fault dislocation, employing digital image correlation techniques to capture the displacement fields of various types of fault dislocations. Subsequently, a numerical model of the fault interface element was established, and fault element parameters were determined through sensitivity analysis and trial calculation. This study further analyzed the perturbation of the geostress field using this numerical model. Finally, a multi-fault numerical simulation model was constructed to clarify the perturbations in the regional geostress field under the influence of multiple faults. The results indicate that the geostress perturbation range under the action of multiple faults spans from 183.06 to 310.06 m.

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