Questions of GUPCO

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    Questions of GUPCO

    مُساهمة من طرف GeoMohamad في 2007-10-04, 10:59 pm



    Questions of GUPCO

    1-Write the stratigraphic column of GOS, WD, Nile delta

    2-Define
    *formation-structure-index fossil-unconformity-sequence-mud log unit-time lag-mud circulation-attic oil-clysmic fault-muting-CDP-NMO-migration-stacking-pull up-ghost multiple


    3-what is difference between
    1-fault, joint
    2-erosion, diagensis


    4-when SP can not measure

    5-mention 5 fields in GOS and mention the horizon of production

    6-what is the major type of traps in GOS

    7-what are the favorable conditions to form oil

    8-how can you calculate?
    1-interval velocity
    2-reflection coefficient


    9-According to stratigraphic sequence what is the reservoir geometry
    in the down dip


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    مُساهمة من طرف mohammed radwan في 2007-10-05, 12:07 am

    excellent that pactical application life
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    geogibo
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    مُساهمة من طرف geogibo في 2007-10-05, 4:03 am

    Thanks a lot GeoMohamed for these questions
    !! I hope the answers are available too ! !
    lol!
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    the knight mohsen
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    مُساهمة من طرف the knight mohsen في 2007-10-05, 5:11 pm

    شكرا على الاسئلة بس يريت تبعت حلها قريب
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    era11
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    مُساهمة من طرف era11 في 2007-10-05, 10:31 pm

    thanks a lot for the questions and hope 2 get the answers too

    takey
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    مُساهمة من طرف takey في 2007-10-07, 1:14 pm

    geogibo كتب:
    Thanks a lot GeoMohamed for these questions
    !! I hope the answers are available too ! !
    lol!


    Why every one want the answers without spare any effort. I think it will be great if each one answer one point. I will start by myself and I will answer this question breifly

    what is difference between
    1-fault, joint



    joint: A physical break in rocks across which there has been no relative movement.

    fault: A displacement of rocks along a shear surface. The surface along which displacement occurs is called the fault plane (often a curved surface and not ‘‘plane’’ in the geometric sense).

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    مُساهمة من طرف takey في 2007-10-07, 1:16 pm

    you can see some figure of the Joints and faults in the same forum at http://geology.yoo7.com/CaIiaaaIiC-f4/Geologic-Structures-saNO-ICaI-IIC-aECaOaN-t1.htm

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    مُساهمة من طرف takey في 2007-10-07, 3:42 pm

    Define the formation??


    Formation: A body of rock that is distinguishable from other rock bodies by significant differences in lithology (and therefore is mappable). Its boundaries may be either sharp or arbitrarily specified in a gradational sequence. Formations are subdivided into members, which in turn are subdivided into beds. Members and beds have lithological characteristics that distinguish them from other members and beds, but which are insufficient to classify them as separate formations or members. Several adjacent formations may form a group, whose boundaries are marked by major changes in lithology and/or depositional environments, or by a major break in sedimentation. The divisions are somewhat arbitrary but are usually specified by Stratigraphic Commissions. Nonsedimentary rock units that do not conform to the law of superposition are called lithodemes (Greek for stone bodies).
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    uno
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    مُساهمة من طرف uno في 2007-10-08, 4:13 am

    DEFINITION
    Structure: it addresses the archeticture of the earth- the
    structures that make up the earth's crust, and that form in response to applied forces and stresses
    Index fossils: are fossils that used to identify geologic periods and have some characters such as short vertical range, wide geographical distribution and must have a strong shell in order to withstand the the environmental conditions
    Unconformity: erosional surface representing a significant break in deposition( and geologi time ).. it has 3 different types; angular unconformity, disconformity and nonconformity
    Sequence: a stratigraphic unit composed of a relatively conformable succession of genetically related related strata bounded at its top and base by unconformities or their correlative conformities
    Mud-logging unit: it contain sophisticated data acquisition equipments for analyzing drilling fluids and cuttings, some of these equipments are rig monitors, chromatograph, core plugging apparatus, fluoroscope, microscope, computers and vacuum oven
    Mud circulation: the rig uses mant pieces of equipmentsto circulate and treat mud.. mud circulation begins at the mud tanks then through the mud pump-the heart of the circulation system- mud is sent to the drill string and bit passing through the stand pipe and rotary hose and after reaching the bit it has been jet away from it through some openings, mud then continue its way up through annulus carrying the cuttings with it passing by mud return line and finally reach the shale shaker which remove the cuttings from the mud and sent it again to the mud tanks and continue the circulation again and again.
    attic oil: is a crude oil located at the top of a reservoir, above the optimal production zone. Its location makes it uneconomical to extract by conventional technology
    Clysmic fault: is a rift at the eastern part of the Gulf of suez in egypt
    3- WHAT is the difference between diagenesis and erosion?
    Diagenesis: it refers to all changes (textural, physical, chemical, biological) in sediments or sedimentary rocks, which occur after deposition but excluding processes involving high enough teperature and pressure to called metamorphism.
    Erosion: it is a result of exposure to the environment.it is a process of break up and corrodes solid rock. it can be occur by a fluid(air or water).
    4- WHEN SP can not be measure??
    The SP will not be created unless there is no conductive fluid in the hole. In other words, it will work in air, gas or oil-filled holes. Also there must be at least a small amount of permeability present to allow the potentials to be created.
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    مُساهمة من طرف moony في 2007-10-11, 10:58 pm

    answers of geophysics parts
    CDP: the reflecting point which is common for a subset of data
    CMP: having the same midpoint between source and receiver
    Ghost: (1)energy that travel upward from an energy release and then is reflected downward. such that occurs at the weathering or at the surface. Ghost energy usually joins the traveling wave train to change the effective wave shape. (2)energy reflected from water surface before being picked up by a submerged receiver
    Migration: an inversion operation involving rearrangement of
    seismic information elements so that reflections and diffractions are plotted on their locations
    Mud: an aqueous suspension used in rotary drilling. Mud is pumped down through the drill pipe and up through an annular space between the wall and the hole
    Mud log: as a rotary well is drilled samples of the circulating mud and its suspended drill cutting are examined for lothology and hydrocarbons by visual observation and for gas phase constituents by a Whealstone bridge "hot-wire" partition gas chromatograph or hydrogen flame ionization analyzer. a mud log is a plot of such measurements together with a lithologic log and drilling time log.
    - a log made with a micro log sonde with the arms collapsed so that the measuring pad is not pressed against the borehole wall. Measure the resistivity of mud at in hole conditions
    Multiple: seismic energy that has been reflected more than once
    Muting: in the early part of a record long offset traces may be muted (excluded from the stack ) because they are dominated by reflection arrivals.
    NMO: the difference in reflection arrival time because the geophone is not located at source point. Usually applied to common midpoint gathers, it is the additional travel time required because of offset, assuming that the reflecting bed is not dipping and the ray paths are straight. This leads to hyperbolic
    Shape for a reflection
    Pull up : an apparent uplift caused by local shallower high velocity region. Opposite to pull down which results from low velocity layer.
    Stacking: combining traces from different records to produse one trace
    Time lag: the amount by which arrival times are larger than expected. Indicates that some of the paths from source to detector include a low speed portion
    How to measure interval velocity?
    The velocity of an interval in the subsurface is measured by determining the travel time over a depth interval along some ray path
    How to measure reflection coefficient ?
    The ratio between amplitude of reflected wave to that of incident wave. The relationship is obtained by solving boundary condition equations which express the continuity of displacement and stress at the boundary
    The normal incidence reflection coefficient at an interface that separates two media of density ρ1, ρ2 and velocities V1, V2
    (R c=(p2v2-p1v1)/(p2v2+p1v1
    i hope u enjoy it and happy Eid for all members
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    مُساهمة من طرف GeoMohamad في 2007-10-11, 11:26 pm

    thx bgad 3ala ilanswer wi gamil en ilnas kolha tshark kda

    thanx again ya moony


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    مُساهمة من طرف geoahmed في 2007-10-17, 8:48 pm

    thanx for everyone help in these answers
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    hosny hassan
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    مُساهمة من طرف hosny hassan في 2007-10-22, 7:33 am

    thanks a lot
    this is really nice
    thanks
    Wink
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    مُساهمة من طرف exploder في 2007-10-28, 10:33 pm

    شكرا ليك اكيد الأسئله مفيده حتى لو كان في حاجات مش عارفينها
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    uno
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    مُساهمة من طرف uno في 2007-10-29, 7:57 pm

    ايه لحاجات اللي مش عارفها دي يا باشا..... الاجابات يعني محتاجه توضيح ولا ايه؟
    scratch


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    مُساهمة من طرف abdovolcano في 2007-11-03, 10:35 pm

    معلومات مهمه شكرا لكل اللي شارك في الأجابات
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    مُساهمة من طرف mohamed elzhar في 2007-11-15, 1:23 am

    بجد الاسئله والاجابات حاجه جميله جدا & وانا بشكر كل اللى تعب وجاب الاسئله وحلها
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    مُساهمة من طرف uno في 2007-11-24, 11:57 pm

    العفو يا شباااااب
    المهم نكون كلنا استفدنا منها
    lol!


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    مُساهمة من طرف bat201020 في 2007-12-09, 7:36 pm

    بجد بجد حاجة مهمة جدا جدا الف شكر
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    مُساهمة من طرف كمال محمد قنديل في 2008-07-10, 12:23 am

    بارك الله فيك اخى بس المشكله ان الاسئله هذاه بتتغير كل فتره ولكن جهدك مشكور جدا جدا اخى العزيز ارجو منك لو فلى رسومات لبعض اللوجات للابار او رسوم توضيحيه وجزاك الله ك خير

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