Log ASCII Standard

Log ASCII Standard (LAS) is a standard file-format common in the oil-and-gas and water well industries to store well log information. Well logging is used to investigate and characterize the subsurface stratigraphy in a well.

A single LAS file can only contain data for one well, but it can contain any number datasets (called "curves") from that well. Common curves found in a LAS file may include natural gamma, travel time, or resistivity logs.

External links

Canadian Well Logging Society: LAS (Log ASCII Standard), accessed 23 December 2014.
US Geological Survey: Log ASCII Standard (LAS) files for geophysical wireline well logs and their application to geologic cross sections through the central Appalachian basin, accessed 24 January 2009.
Log I/O Java library for accessing LAS files and other common well log formats like DLIS, LIS and CVS
Ruby LAS Reader Ruby library for accessing LAS (Log ASCII Standard) files

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