Quote: "Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole."
Technique used to gather data about the formation and composition of rocks surrounding a borehole that is being drilled.
Geological formations: Understanding the types of rocks, their composition, structure, and properties is essential in well logging as it helps in identifying formations and determining the best drilling techniques.
Reservoir characterization: This topic covers the description and measurement of properties of geological formations that could hold hydrocarbons, such as porosity and permeability.
Logging tools: The various tools used in well logging, including wireline, logging-while-drilling (LWD), and measurement-while-drilling (MWD), as well as their capabilities and limitations.
Data acquisition and interpretation: Understanding the processes of data capture, processing, and interpretation, and the different types of data that can be generated during a logging operation.
Petrophysical analysis: This topic covers the analysis of well log data, including computation of formation properties, such as porosity, permeability, and water saturation.
Formation evaluation: The collection, analysis, and integration of well log data and other geological data to evaluate formations and determine their hydrocarbon potential.
Fluid analysis: The analysis of well log data to determine the types and properties of fluids within the formation, including oil, gas, and water.
Formation imaging: This involves the use of various imaging technologies, such as microresistivity imaging, to visualize formation properties, including fractures, bedding, and borehole shape.
Well completion: Understanding the best practices for completing a well, including the selection of equipment and the treatment of wellbore fluid.
Log interpretation software: Learning how to use various software tools to interpret well log data and generate reports.
Resistivity logging: Measures the electrical resistivity of subsurface formations to determine their permeability and fluid saturation.
Gamma ray logging: Measures the natural gamma radiation emitted by subsurface formations to determine lithology, porosity, and clay content.
Density logging: Measures the bulk density of subsurface formations to determine porosity and lithology.
Neutron logging: Measures the thermal neutron capture cross-section of subsurface formations to determine porosity and lithology.
Sonic logging: Measures the travel time of sound waves through subsurface formations to determine lithology, porosity, and fluid saturation.
Nuclear magnetic resonance logging: Measures the relaxation times of hydrogen nuclei in subsurface formations to determine fluid saturation, porosity, and permeability.
Formation pressure testing: Determines the pressure and fluid content of subsurface formations to determine their productivity and pressure regimes.
Dipmeter logging: Measures the orientation and dip of subsurface bedding planes to determine the structural geology of formations.
Acoustic imaging/logging: Uses high-frequency sound waves to produce images of subsurface formations for visualization and interpretation.
Microresistivity logging: Measures the electrical resistivity of thin layers and fractures in subsurface formations for detailed geological analysis.
Quote: "The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs)."
Quote: "Some types of geophysical well logs can be done during any phase of a well's history: drilling, completing, producing, or abandoning."
Quote: "Well logging is performed in boreholes drilled for the oil and gas, groundwater, mineral and geothermal exploration, as well as part of environmental and geotechnical studies."
Quote: "The practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole."
Quote: "Based on visual inspection of samples brought to the surface."
Quote: "Based on physical measurements made by instruments lowered into the hole (geophysical logs)."
Quote: "Some types of geophysical well logs can be done during any phase of a well's history: drilling, completing, producing, or abandoning."
Quote: "Boreholes drilled for the oil and gas, groundwater, mineral and geothermal exploration, as well as part of environmental and geotechnical studies."
Quote: "The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs)."
Quote: "Some types of geophysical well logs can be done during any phase of a well's history: drilling, completing, producing, or abandoning."
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Quote: "Boreholes drilled for the oil and gas, groundwater, mineral and geothermal exploration."
Quote: "Physical measurements made by instruments lowered into the hole."
Quote: "Well logging, also known as borehole logging."
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Quote: "The practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole."
Quote: No specific quote provided.
Quote: No specific quote provided.