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GeoRef Categories
Era and Period
Book Series
Date
Availability
spalling
Testing and Design of Discriminants for Local Seismic Events Recorded during the Redmond Salt Mine Monitoring Experiment Available to Purchase
Study on Stress-Type Rockburst Mechanism Based on Continuous-Discontinuous Element Method Open Access
P / SV Amplitude Ratios of Shallow Isotropic Explosions and Earthquakes Could Be Indistinguishable at Local Distances: Insights from Single‐Station Waveform Simulations Open Access
Numerical Modeling of Air‐Blast Suppression as a Function of Explosive‐Charge Burial Depth Available to Purchase
Characteristics of Ground Pressure Disaster and Rockburst Proneness in Deep Gold Mine Open Access
Explosion Discrimination Using Seismic Gradiometry and Spectrally Filtered Principal Components: Controlled Field Experiments Available to Purchase
Inversion of Infrasound Time Series for Seismoacoustic Source Parameters Produced by a Buried Chemical Explosion at the Source Physics Experiment Phase II: Dry Alluvium Geology Available to Purchase
Seismicity around Southern Lake Erie during 2013–2020 in Relation to Lake Water Level Available to Purchase
Assessing the Accuracy of a Borehole‐Controlled P ‐Wave Velocity Model of Yucca Flat, Nevada Using Large‐ N Seismic Data Available to Purchase
Shock Metamorphic Features in the Archean Simlipal Complex, Singhbhum Craton, Eastern India: Possible Remnant of a Large Impact Structure Available to Purchase
The application of geology to the design, construction and continuing maintenance of the Mullardoch Tunnel Available to Purchase
Granitic Boulder Erosion Caused by Chaparral Wildfire: Implications for Cosmogenic Radionuclide Dating of Bedrock Surfaces Available to Purchase
Three-Stage Multiscale Nonlinear Dynamic Analysis Platform for Building-Level Loss Estimation Available to Purchase
Effect of Earthquake-Induced Damage on the Sidesway Response of Steel Moment-Frame Buildings during Fire Exposure Available to Purchase
A method for characterizing basement rocks from borehole images Available to Purchase
Abstract Basement rocks tend to have negligible primary (rock matrix) porosity and, where present, almost all porosity is fracture-related. An insight into fracture type and distribution is therefore of importance when attempting to predict potential flow zones in hydrocarbon reservoirs. In the absence of core, borehole images provide a proven means of characterizing fractures within basement rocks. This paper will concentrate upon the classification and characterization of basement structural elements, including fractures, faults and breccias, versus lithological elements, such as foliations and intrusion boundaries from borehole images. In addition, suggestions of how to differentiate present-day in-situ stress indicators from natural fractures will be made as these features may provide important information regarding open fracture set orientations. Examples of microresistivity and acoustic borehole images acquired in fractured igneous basement rocks from oil wells in Yemen will be presented together with a suggested methodology for their interpretation. The discussion will be based on hydrocarbon reservoirs; however, the methodology outlined can potentially have wider applications in, for example, groundwater pollution prevention schemes or groundwater extraction, radioactive waste disposal, geothermal energy resources and deep-drilling research programmes.