Geophysical Well Logging (original) (raw)
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Geophysical well logging, developed in the late 1920s by the Schlumberger brothers, is an essential technology in the petroleum industry, as well as in mineral exploration, groundwater assessment, and geoscience research. This technique enables the detailed characterization of subsurface geology through various physical properties of the rocks surrounding a borehole, providing a more comprehensive understanding than drilling alone. With modern advancements allowing precise depth control and larger sampled volumes, geophysical logging proves economically advantageous and essential for efficient exploration and monitoring.
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Evaluation of Non-Nuclear Techniques for Well Logging: Final Report
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Geophysical Well Logging- a Contribution to the Fractures Characterization
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The need of a proper reconstruction of faults and fracture systems crossed during the well drilling is one of the most important feature for the deep exploration of a geothermal reservoir. The geophysical well logging have been always utilized for geological and stratigraphic determinations, for the measurement of the main physical characteristics in order to provide calibration parameters for the surface geophysical surveys and for a qualitative localization of fractured and potential productive layers. Recent and specialized techniques and sensors for the detection of geometrical-structural parameters are now widely used. One of them, the Circumferential Borehole Imaging Log (CBIL), when utilized for potential fractured layers already tagged by other techniques (as acoustic Wave Forms), has been proved as very effective and detailed. We applied a complete set of this techniques in a deep well of the Larderello-Travale geothermal field, and a detailed analysis and characterization ...
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