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  2. Well logging - Wikipedia

    en.wikipedia.org/wiki/Well_logging

    Wireline logging is performed by lowering a 'logging tool' - or a string of one or more instruments - on the end of a wireline into an oil well (or borehole) and recording petrophysical properties using a variety of sensors. Logging tools developed over the years measure the natural gamma ray, electrical, acoustic, stimulated radioactive responses, electromagnetic, nuclear magnetic resonance ...

  3. Wireline (cabling) - Wikipedia

    en.wikipedia.org/wiki/Wireline_(cabling)

    Wireline (cabling) In the oil and gas industry, the term wireline usually refers to the use of multi-conductor, single conductor or slickline cable, or "wireline", as a conveyance for the acquisition of subsurface petrophysical and geophysical data and the delivery of well construction services such as pipe recovery, perforating, plug setting ...

  4. Gamma ray logging - Wikipedia

    en.wikipedia.org/wiki/Gamma_ray_logging

    Gamma ray logging is a method of measuring naturally occurring gamma radiation to characterize the rock or sediment in a borehole or drill hole. It is a wireline logging method used in mining, mineral exploration, water-well drilling, for formation evaluation in oil and gas well drilling and for other related purposes. [1] Different types of rock emit different amounts and different spectra of ...

  5. Formation evaluation - Wikipedia

    en.wikipedia.org/wiki/Formation_evaluation

    Wireline logging is performed by lowering a 'logging tool' - or a string of one or more instruments - on the end of a wireline into an oil well (or borehole) and recording petrophysical properties using a variety of sensors.

  6. Logging while drilling - Wikipedia

    en.wikipedia.org/wiki/Logging_while_drilling

    Logging while drilling (LWD) is a technique of conveying well logging tools into the well borehole downhole as part of the bottom hole assembly (BHA).

  7. Wireline QA/QC - Wikipedia

    en.wikipedia.org/wiki/Wireline_QA/QC

    Wireline quality assurance and quality control (wireline QA/QC) is a set of requirements and operating procedures which take place before, during, and after the wireline logging job.

  8. Caliper log - Wikipedia

    en.wikipedia.org/wiki/Caliper_log

    A caliper log is a well logging tool that provides a continuous measurement of the size and shape of a borehole along its depth [1] and is commonly used in hydrocarbon exploration. The measurements that are recorded can be an important indicator of wash-outs, cave ins or shale swelling in the borehole, which can affect the results of other well ...

  9. Pipe recovery operations - Wikipedia

    en.wikipedia.org/wiki/Pipe_recovery_operations

    Pipe recovery is a specific wireline operation used in the oil and gas industry, when the drill string becomes stuck downhole. Stuck pipe prevents the drill rig from continuing operations. This results in costly downtime, ranging anywhere from $10,000-1,000,000 per day of downtime, therefore it is critical to resolve the problem as quickly as possible. Pipe recovery is the process by which the ...