A microseismic experiment in Abu Dhabi, United Arab Emirates: implications for carbonate reservoir monitoring

Basu, S.; Ali, Mohammed Y.; Farid, Asam; Berteussen, K. A.; Mercado, Garry

doi:10.1007/s12517-013-1060-9

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…By monitoring fluctuations in roadway microseismic events, abnormal rock mass damage can be predicted. Numerous scholars have analyzed the pattern of rock mass damage and disaster-causing mechanisms based on microseismic event data, thus predicting and warning against dynamic disasters [3][4][5][6][7][8][9][10]. In mine water hazard prevention and control, the initial application of microseismic monitoring systems involves studying the rupture and instability process of water-conducting channels.…”

Section: Introductionmentioning

confidence: 99%

Integrating Microseismic Monitoring for Predicting Water Inrush Hazards in Coal Mines

Lian,

Zhang,

Yin

et al. 2024

Water

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The essence of roof water inrush in coal mines fundamentally stems from the development of water-bearing fracture zones, facilitating the intrusion of overlying aquifers and thereby leading to water hazard incidents. Monitoring rock-fracturing conditions through the analysis of microseismic data can, to a certain extent, facilitate the prediction and early warning of water hazards. The water inflow volume stands as the most characteristic type of data in mine water inrush accidents. Hence, we investigated the feasibility of predicting water inrush events through anomalies in microseismic data from the perspective of water inflow volume variations. The data collected from the microseismic monitoring system at the 208 working face were utilized to compute localization information and source parameters. Based on the hydrogeological conditions of the working face, the energy screening range and its calculation grid characteristics were determined, followed by the generation of kernel density cloud maps at different depths. By observing these microseismic kernel density cloud maps, probabilities of roof water-conducting channel formation and potential locations were inferred. Subsequently, based on the positions of these roof water-conducting channels on the planar domain, the extension depth and expansion direction of the water-conducting channels were determined. Utilizing microseismic monitoring data, a quantitative assessment of water inrush risk was conducted, thereby establishing a linkage between microseismic data and water (inrush) data, which are two indirectly related datasets. The height of microseismic events was directly proportional to the trend of water inflow in the working face. In contrast, the occurrence of water inflow events and microseismic events exhibited a specific lag effect, with microseismic events occurring prior to water inrush events. Abnormalities in microseismic monitoring data partially reflect changes in water-conducting channel patterns. When connected with coal seam damage zones, water inrush hazards may occur. Therefore, abnormalities in microseismic monitoring data can be regarded as one of the precursor signals indicating potential floor water inrushes in coal seams.

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Section: Introductionmentioning

confidence: 99%

Integrating Microseismic Monitoring for Predicting Water Inrush Hazards in Coal Mines

Lian,

Zhang,

Yin

et al. 2024

Water

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“…Therefore, the above conductivity should be the long-term conductivity. During field construction, micro seismic monitoring data are usually used for rough estimation, but the micro seismic monitoring can only obtain the dynamic fracture length during the acid fracturing process, resulting in an overestimation of the effective length of acidfracturing fracture [6][7][8][9][10]. Based on the hydraulic fracture propagation model, some scholars have introduced the acid-rock reaction model to establish several numerical models for predicting the effective length of acid-fracture fractures [6,11,12].…”

Section: Introductionmentioning

confidence: 99%

A New Method for Measuring the Effective Length of Acid-Fracturing Fractures

Xu,

Li,

Zhang

et al. 2023

Processes

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Acid fracturing as an important stimulation technique, provides strong technical support for the exploration breakthrough and efficient development of carbonate oil and gas reservoirs. Accurately predicting the effective length of acid-fracturing fractures is of great significance for guiding the acid-fracturing design and improving the stimulation effect of acid fracturing. This article fully considers the essential requirement that the long-term conductivity of acid-fracturing fractures is not zero within the effective length segment. Based on the principle of the same acid concentration and acid dissolution amount, the long-term conductivity testing experiment of acid-fracturing fractures under different residual acid concentrations was designed and carried out with the consideration of the common ion effect. The critical acid concentration with long-term conductivity of 0 was obtained. This method overcomes the shortcomings of the existing methods that result in the overestimation of the effective length of acid-fracturing fractures due to inaccurate values of residual acid concentration or short-term conductivity as the determining criterion. The experimental results show that the higher the acid concentration, the deeper the acid etching groove, and the higher the initial conductivity of acid-fracturing fractures. The long-term conductivity decline rate of different acid concentrations is above 80%, which means that using short-term conductivity as an evaluation indicator alone will overestimate the effective length of acid-fracturing fracture and the yield-increasing effect of acid-fracturing treatment. In the case presented in this paper, the critical acid concentration for acid-fracturing fracture with long-term conductivity of 0 is 4%, and the effective length of acid-fracturing fractures is 120 m.

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Time-lapse seismic tomography of an underground mining zone

Wang

Zhao

et al. 2018

International Journal of Rock Mechanics and Mining Sciences

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A microseismic experiment in Abu Dhabi, United Arab Emirates: implications for carbonate reservoir monitoring

Cited by 8 publications

References 23 publications

Integrating Microseismic Monitoring for Predicting Water Inrush Hazards in Coal Mines

Integrating Microseismic Monitoring for Predicting Water Inrush Hazards in Coal Mines

A New Method for Measuring the Effective Length of Acid-Fracturing Fractures

Time-lapse seismic tomography of an underground mining zone

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