Resonating fluid filled fractures in passive seismic

Sicking, Charles; Vermilye, Jan; Malin, P.

doi:10.1190/segam2019-3214512.1

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Because these microseismic are not clear, they cannot be distinguished as a single event, or cannot separate P-wave and S-wave arrivals. Lacazette et al and Sicking et al have applied passive seismic imaging methods in different work areas and developed a streaming depth imaging (SDI) workflow [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Reservoir response analysis based on passive seismic tomography in CO2 injection: A case study of the Shizhuang CO2-ECBM Project

Meng¹,

中井²,

Yang³

et al. 2023

Preprint

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CO2 injection into subsurface reservoirs for storage engineering is the most important means to reduce greenhouse gases. To satisfy the huge carbon-neutral target, injection and storage engineering exploration is needed for tight reservoirs beyond aquifers or abandoned reservoirs. Later, China carried out an exploration and research project on CO2-ECBM and CO2-EOR demonstration projects in tight reservoirs for the applicability, reliability and coordination of different monitoring technologies. This paper relies on the CO2-ECBM project for a passive monitoring technique of the TS634 well in ShiZhuang City, Shanxi Province, China. The monitoring adopted the three-component grid monitor system with the long-time continuous acquisition, and applied the passive seismic tomography algorithm, and obtained the energy perturbation during reservoir injection. The results integrated the target coal seam configuration, porosity, and permeability distribution of the layer before injection, which well represents the energy distribution and fractures probability distribution caused by fluid perturbation during the injection process. After that, comparing the results of the multi-period processing can illustrate the fluid transport trend and inter-well interconnection direction, and it is consistent with the production well verification. For the first CO2-ECBM demonstration project in China, the passive seismic monitoring technology is used to complete the fluid transport trend analysis with the passive seismic tomography technology as the core, and better presentation results are obtained at a certain scale, which initially verifies the effectiveness of the passive seismic monitoring technology for the ECBM carbon storage project. This study lays a foundation for the development of domestic carbon storage geophysical monitoring technology, and is more likely to improve the accuracy of comprehensive research on multidimensional and multi-domain monitoring technology.

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Section: Introductionmentioning

confidence: 99%

Reservoir response analysis based on passive seismic tomography in CO2 injection: A case study of the Shizhuang CO2-ECBM Project

Meng¹,

中井²,

Yang³

et al. 2023

Preprint

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Fracture Seismic: Mapping Subsurface Connectivity

Sicking

Malin²

2019

Geosciences

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Fracture seismic is the method for recording and analyzing passive seismic data for mapping the fractures in the subsurface. Fracture seismic is able to map the fractures because of two types of mechanical actions in the fractures. First, in cohesive rock, fractures can emit short duration energy pulses when growing at their tips through opening and shearing. The industrial practice of recording and analyzing these short duration events is commonly called micro-seismic. Second, coupled rock–fracture–fluid interactions take place during earth deformations and this generates signals unique to the fracture’s physical characteristics. This signal appears as harmonic resonance of the entire, fluid-filled fracture. These signals can be initiated by both external and internal changes in local pressure, e.g., a passing seismic wave, tectonic deformations, and injection during a hydraulic well treatment. Fracture seismic is used to map the location, spatial extent, and physical characteristics of fractures. The strongest fracture seismic signals come from connected fluid-pathways. Fracture seismic observations recorded before, during, and after hydraulic stimulations show that such treatments primarily open pre-existing fractures and weak zones in the rocks. Time-lapse fracture seismic methods map the flow of fluids in the rocks and reveal how the reservoir connectivity changes over time. We present examples that support these findings and suggest that the fracture seismic method should become an important exploration, reservoir management, production, and civil safety tool for the subsurface energy industry.

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Resonating fluid filled fractures in passive seismic

Cited by 2 publications

References 9 publications

Reservoir response analysis based on passive seismic tomography in CO2 injection: A case study of the Shizhuang CO2-ECBM Project

Reservoir response analysis based on passive seismic tomography in CO2 injection: A case study of the Shizhuang CO2-ECBM Project

Fracture Seismic: Mapping Subsurface Connectivity

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