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Questions and Answers
Geological logs are based on physical measurements made by instruments lowered into the hole.
Geological logs are based on physical measurements made by instruments lowered into the hole.
False
Gamma-ray logs measure the natural radioactivity produced in the rock, and elements such as potassium, thorium, and uranium are of significance in ordinary sedimentary rocks.
Gamma-ray logs measure the natural radioactivity produced in the rock, and elements such as potassium, thorium, and uranium are of significance in ordinary sedimentary rocks.
True
Well logging can only be performed during the drilling phase of a well's history.
Well logging can only be performed during the drilling phase of a well's history.
False
Gamma-ray logs measure the natural radioactivity produced in the rock, and elements such as potassium, thorium, and uranium are of significance in ordinary sedimentary rocks.
Gamma-ray logs measure the natural radioactivity produced in the rock, and elements such as potassium, thorium, and uranium are of significance in ordinary sedimentary rocks.
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Well logging is not used in geothermal exploration.
Well logging is not used in geothermal exploration.
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Shale does not contain most of the elements that produce gamma radiation.
Shale does not contain most of the elements that produce gamma radiation.
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Geological logs are based on visual inspection of samples brought to the surface.
Geological logs are based on visual inspection of samples brought to the surface.
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Well logging can be performed during any phase of a well's history: drilling, completing, producing, or abandoning.
Well logging can be performed during any phase of a well's history: drilling, completing, producing, or abandoning.
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Shale contains most of the elements that produce gamma radiation.
Shale contains most of the elements that produce gamma radiation.
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Well logging is performed only in boreholes drilled for oil and gas exploration.
Well logging is performed only in boreholes drilled for oil and gas exploration.
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Study Notes
Geological Logs and Measurements
- Geological logs utilize physical measurements from instruments lowered into drilling holes.
- Gamma-ray logs assess natural radioactivity in rock formations, focusing on potassium, thorium, and uranium, significant in sedimentary rocks.
- Well logging occurs exclusively during the drilling phase of a well's lifecycle.
Well Logging Limitations
- Well logging is not applicable in geothermal exploration.
- Shale is noted for not containing most gamma radiation-producing elements.
- Visual inspections of surface samples also contribute to geological logs.
Types and Phases of Well Logging
- Well logging can be conducted at various stages of a well's history: drilling, completing, producing, or abandoning.
- Shale is associated with most elements that emit gamma radiation.
- Well logging is specifically performed in boreholes aimed at oil and gas exploration.
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Description
Test your knowledge of well logging with this quiz. Explore questions about the methods, tools, and techniques used to create detailed records of geological formations within boreholes. Dive into the world of geological and geophysical well logging.
