• Wednesday, July 20, 2016

    نموذج امتحان شركه خالده جولوجيا واجابتها

    نموذج امتحان شركه خالده جولوجيا



    Dip and Strick
    Guide Fossil
    Core Simple

    ?Give sex type of sedimentry rock

    ?To form an oil pool four factours are required

    what the differance between

    Normal and Resvers fault
    Anticline and Syncline
    Structural and Stratigraphic trap

     Define: Fault, Joint

     Fault: a fracture with a displacement
    Joint: a fracture without displacement

    Give short note about

     Lag time: the time mud takes from mud tanks to surface

     Mud Circulation: the way mud takes from mud tanks through flow lines, pipes, then go back again to mud tanks

    Mud logging unit: a unit servicing mud logging operations

    Define the following

    Formation: a stratigraphic unit characterized by limited geologic age and known by lithology and fossil content

    Unconformity: a gap in time in the stratigraphic column which is
    resulted either due to erosion or non-deposition

     Index fossil: a special type of fossil characterized by high areal extent and limited geologic age. It is used in determining age of a
     formation and correlation

     Sequence: a group of strata that is characterized by an unconformity below and above

    Total porosity: the volume of rock that is pore space measured 

     Effective porosity: the volume of rock that is connected pores

     Permeability: the ability of rock to conduct fluid measured by mdarcy

     Mobility: the ability of fluids to move through connected pores

     Wettability: the ability of rock to adhere water molecules

    Cement: a precipitated chemical material between rock grains calcite

    Matrix: a detrital material between rock grains (clay, mud

     Reservoir rock: a rock characterized by enough porosity and
    permeability to storage and produce hydrocarbons

     Seal: a rock characterized by very or zero permeability and high
    ductility that it can prevent fluids from migration

     True dip: the angle of dip that is measured in a direction normal to the strike line

     Apparent dip: the angle of dip that is measured in a direction other normal to the strike line

     Hydrocarbon: a chemical compound composed mainly of Hydrogen and Carbon

     Moveable water: free water moving in pores between grains
    Connate water: or restricted water which is deposited during rock
    deposition and associated with irreducible reservoirs

     Mention factors controlling porosity
    Packing, overburden pressure, cement, matrix

     Mention factors controlling rock permeability
    Shale volume, connected porosity, tortousity

    (Choose the correct answer: (right answer in blue color

     Shale has (High- Low) effective porosity and very (High- Low)

     High gamma ray response in front of a zone preliminary indicates 
    (the zone is (clean- shaly- not enough information

     If Anhydrite is present in a Lime stone formation, the apparent density

    limestone porosity will be (too low- too high- the same- not enough

     Resistivity of a solution is directly proportional to its salinity (true

    ( SP log could be used to calculate shale volume (true- false

    - Hydrocarbon properties depend on ( its composition- reservoir
    conditions- not enough information

    What do you know about

     Clysmic fault: a rift at the eastern part of the Gulf of Suez. Clysmic faulting was initiated in Oligocene and continued into Post Miocene time

    Attic oil: residual oil which can not be extracted from a reservoir
    Oil water contact: the contact line between oil and water in reservoir

     Transition zone: in a reservoir it is found between oil and water, gas and
    oil, and between invaded and un-invaded zone (intermediate zone) in
    structural geology it is defined as a deformed zone between two undeformed zones

    Define the trap 

    A trap is a geological phenomenon based on structure, lithology and it’s a ability to capture or trap oil

     What is the rock name that has the following chemical

     Ca So4 Anhydrite
     CaCo3 Limestone
     CaSo4. 2H2o Gypsum
     Ca Mg (Co3)2 Dolomite
    Na Cl Halite

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