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  2. Spontaneous potential logging - Wikipedia

    en.wikipedia.org/wiki/Spontaneous_potential_logging

    Spontaneous potential log, commonly called the self potential log or SP log, is a passive measurement taken by oil industry well loggers to characterise rock formation properties. The log works by measuring small electric potentials (measured in millivolts) between depths with in the borehole and a grounded electrode at the surface.

  3. Spontaneous potential - Wikipedia

    en.wikipedia.org/wiki/Spontaneous_potential

    As established earlier, static SP is defined as follow: SSP = −K log (R mfe /R we) Static SP (SSP) can be obtained directly from the SP curve if the bed is clean, thick, porous, permeable, and only moderately invaded. When these conditions are not met, the recorded SP will need to be corrected. Various correction charts are available for this ...

  4. Well logging - Wikipedia

    en.wikipedia.org/wiki/Well_logging

    Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole.The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs).

  5. Logbook - Wikipedia

    en.wikipedia.org/wiki/Logbook

    A logbook (or log book) is a record used to record states, events, or conditions applicable to complex machines or the personnel who operate them. Logbooks are commonly associated with the operation of aircraft, nuclear plants, particle accelerators, and ships (among other applications).

  6. Inventor's notebook - Wikipedia

    en.wikipedia.org/wiki/Inventor's_notebook

    The inventor's notebook (also called a journal, lab book or log book) is a systematic device for recording all information related to an invention in such a way that it can be used to develop a case during a patent contestation or patent-related lawsuit.

  7. Many Americans struggle to keep the lights on as energy costs ...

    www.aol.com/news/many-americans-struggle-keep...

    In some U.S. states, more than 40% of residents report having to cut back on basic necessities to afford their electricity bill, survey finds.

  8. NIST Special Publication 800-92 - Wikipedia

    en.wikipedia.org/wiki/NIST_Special_Publication...

    NIST Special Publication 800-92, "Guide to Computer Security Log Management", establishes guidelines and recommendations for securing and managing sensitive log data.The publication was prepared by Karen Kent and Murugiah Souppaya of the National Institute of Science and Technology and published under the SP 800-Series; [1] a repository of best practices for the InfoSec community.

  9. Prisoners of Profit - The Huffington Post

    projects.huffingtonpost.com/projects/prisoners...

    Youth Services International confronted a potentially expensive situation. It was early 2004, only three months into the private prison company’s $9.5 million contract to run Thompson Academy, a juvenile prison in Florida, and already the facility had become a scene of documented violence and neglect.

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