نموذج امتحان شركه خالده جولوجيا
Define
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)
permeability
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
(information
Resistivity of a solution is directly proportional to its salinity (true
false
( 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 a 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
composition
Ca So4 Anhydrite
CaCo3 Limestone
CaSo4. 2H2o Gypsum
Ca Mg (Co3)2 Dolomite
Na Cl Halite
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