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Depth scale
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Complete name
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Definition
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DSF
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Drillers depth below seafloor
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The length of all drill string components between seafloor and target.
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WRF
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Wireline log depth below rig floor
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Length of wireline and sensor offset between the rig floor and the target.
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WSF
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Wireline log depth below seafloor
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WRF with seafloor depth below rig floor subtracted.
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WSSF
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Wireline log speed-corrected depth below seafloor
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WSF corrected with accelerometer data.
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WMSF
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Wireline log matched depth below seafloor
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Depth derived by correlation between reference run and all additional runs to make a set of WSF runs internally consistent.
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