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Well logging measurement Neutron log

Well logging measurement Neutron log


    Neutron log

    Well logging measurement Neutron log

    القياسات التى تتم عن طريق النيوترون اثناء تسجيلات الابار

    Neutron tools measure the amount of hydrogen in the formation and relate it to porosity

    High hydrogen content indicates water or liquid hydrocarbons

    shale sedimentary rocks don't contain hydrogen in their composition

    or

    Is a porosity logging tool which depends on the presence of hydrogen which may be found in oil, water, gas or chemical composition of some rocks such as shale

    The neutron log is the most affected by shale


    theory

    Neutron are electrically neutral particles with a mass approximately equal to that of a hydrogen atom

    High-energy neutrons are emitted from the chemical source

    The neutrons collide with a nucleus of the formation minerals in elastic-type collisions

    Neutron will lose the most energy when they hit something with equal mass such as hydrogen atom and enter in the thermal state

    A few microseconds after being released, the neutron has lost significant energy and enter the thermal state

    When in the thermal state, the neutron is captured by the nucleus of other atoms

    The detector on the tool may detect epithermal neutrons or high energy gamma ray of capture

    Compensate neutrons tools detect epithermal neutrons and use a ratio of near-to-far detector counts to determine porosity

    Sidewall neutron tools detect epithermal neutrons and have less matrix effect

    The type of neutron logging tools


    (CNL(COMPENSATE NEUTRON

    Detect thermal neutron

    Has one source and two detector

    Can be used in either uncased or cased hole



    (SNP(SIDE WALL LOGGING TOOLS

    Detect epithermal neutron

    Has asingle detector

    Can be used in open hole

    (DNL(DUAL NEUTRON LOG

    (TDT(THERMAL DECAY TIME

    Neutron application

    Can be used to determine porosity

    Determine the amount of liquid filled the zone 

    Can be used in combination with neutron to determine saturation and lithology

    طريقه عمل تسجيل للابار عن طريق النيترون

    هى طريقه تستخدم لمعرفه كميه الهيدروجين الموجود داخل البئر ومن خلاله يمكن معرفه ماذا كان هذا البئر يحتوى على كميه كبيره من الماء او السوائل 

    ومن خلال ذالك يمكن مقارنتها بمساميه التربه ومعرفه مدى وجود مساميه فى التربه من عدمه


    القياسات التى تتم عن طريق النيوترون اثناء تسجيلات الابار