Wellbore 1.0: The metadata element set for wellbore data
This is the information site on Wellbore_1.0, the metadata element set for wellbore data. This standard is maintained by the CWLS and is in the public domain. You are free to use and distribute this metadata element set.
The metadata element set for wellbore data was designed to streamline the archiving process for welbore data. The technique is similar to that used by a public library, except that the metadata element set was specifically designed for wellbore data. The attached paper (see link below) describes the concepts in more detail.
The proposed method can be applied immediately to “structured data”, such as LAS files, because software can be designed to extract information from the body of the file to populate the metadata element set. Software is unable to extract metadata information from the body of “unstructured data”, such as Adobe “pdf” files, and instead must rely on summary information tags to provide this information. This method only works if the metadata information was previously added to the summary information tag. For unstructured files, the process of adding a populated metadata element set to a tag is best done at the time the files are being created. This will require the service industry to make some changes to their operation.
The attached paper explains data storing concepts using metadata, defines a metadata element set for wellbore data, and shows its application to structured and unstructured data files. The focus is on wellbore data relating to logs and core however it will work for all wellbore data and all file types. Logs, and possibly core, will benefit most from an industry standard because they are frequently accessed and exchanged between various parties. The method was successfully tested on a pilot project consisting of 26,425 LAS files.
If you have any questions please contact:
Case Struyk P.Eng.
Chairman CWLS Metadata Committee
kc.petrophysics@gmail.com