WorksheetsPETE 2034 Part 1
Total questions: 98
Worksheet time: 1hrs 11mins
how closely to be repeated, reproducibility
(a)
how close to the answer, exactness
(a)
(a)
(a)
The standard deviation shows the degree of (a) of samples.
accurately measures the length of an object
(a)
Make a circle for the one that does NOT follow this type of function.
height
weight
porosity
permeability
Pressure calibration curve can be approximated by (a) .
(a)
y intercept formula
(a)
(a)
(a)
(a)
(a)
What's the value of the correlation coefficient (r) you expect?
(a)
A flask with a close‐fitting glass stopper with a small hole through it.
(a)
Pycnometer is from the Greek puknos meaning ____________ , also called pyknometer or “_________________”
(a)
Pycnometer measures (a) of a fluid to be calculated by measuring the weight.
Directly measures liquid density by floating the hydrometer in the liquid.
(a)
Directly measures fluid density using plummet, fluid, and riders.; get it balanced freely in air -> immerse the plummet in the fluid (buoyancy pushes the plummet upward) -> put the riders to make it balanced
(a)
Balancing depends on the ______________ & _______________ ; largest: 0.1, medium:0.01, smallest: 0.001 g/cc.
(a)
A type of chainomatic analytical balance; Immerse the plummet in the fluid (buoyancy pushes the plummet upward) -> control the position of rider & the length of the chain and read the scale (like Vernier caliper) when the system becomes balanced.
(a)
Oil field unit to express oil density
(a)
API gravity (API)
(a)
If the API gravity of a liquid is greater than 10, what does it mean?
It is more viscous than water at the standard condition.
It is less viscous than water at the standard condition.
It is denser than water at the standard condition.
It is less denser than water at the standard condition.
Bubba has an oil sample in a plastic container. When the container is placed in a water bath at elevated temperature, what will happen?
oil volume increases
oil volume decreases
oil turns into water
the volume is the same but there is a gradual increase in mass
A Westphal balance normally comes with three riders (just like our experiments). Therefore the reading will have ___________ significant figures.
one
two
three
four
volume of pore space / total volume
(a)
Porosity
(a)
defines the ability to store fluids, or void fraction.
(a)
Ratio of volume of interconnected pores to the total volume of the sample
(a)
Ratio of volume of all pores to total volume of sample
(a)
(a)
(a)
(a)
(a)
can be determined by direct measurement of core diameter and length
(a)
(a)
(a)
(a)
Change in weight/fluid density
(a)
(a)
is independent of grain size.
(a)
Due to the presence of a wall, the porosity can be _______than expected. (wall effect); the use of different grain size can _______ porosity significantly
(a)
If the porosity of a pack is 45%, which one is that?
the pack has 45% grain volume
the grain volume is larger than the pore volume
the pack can be easily saturated with gas
the pack is impermeable
The difference between total porosity and effective porosity is called
residual porosity
saturable porosity
retrievable porosity
residential porosity
If the porosity is measured by fluid imbibition into a medium in vacuum, which porosity does it offer, total porosity or effective porosity?
total porosity
effective porosity
that are rich in heavier hydrocarbons, leave clear liquids in reservoirs and can be processed on the surface to produce significant amount of valuable liquid hydrocarbons
(a)
important for simulating the gas volume changes and flow behavior in the reservoir, near well-bore, production tubing, surface equipment and in the pipeline
(a)
describes a relationship between the volume of a gas and its pressure and temperature conditions
(a)
Real Gas Law
(a)
R = ______ atm cm3/gm-mole/K
82.507
10.732
R = ______ psia ft3/lb-mole/r
82.507
10.732
In general, gas-measured absolute permeability value is higher than liquid-measured absolute permeability value because of gas slippage.
True
False
For a fluid with the density of 1.5 g/cc and the kinematic viscosity of 10 cS, the dynamic viscosity would be 15 cp.
True
False
Our density measurement with Chainomatic Gravitometer exhibits 3 significant figures.
True
False
For pressure values above the bubble point pressure, oil viscosity increases with decreasing pressure.
True
False
By comparing Rw and Ro, the porosity of a rock sample can be determined.
True
False
By comparing Rw and Ro, the formation factor of a rock sample can be determined.
True
False
If measured, Rt is typically smaller than Ro.
True
False
The x-intercept of a P/Z vs. Gp plot from the volumetric gas reservoir experiment shows the initial amount of gas in the methane cylinder in [scf].
True
False
For the pressure range relevant to deepwater reservoirs (i.e., P > 8,000 psia), the compressibility factor is mostly higher at higher temperature.
True
False
The electrical resistivity has the unit of [meter], while the resistance has the unit of [ohm meter].
True
False
Archie’s formula relates formation factor to the porosity of a rock sample.
True
False
Two gram (2 g) of NaCl in 1,000 ml of water makes 2,000 ppm NaCl solution.
True
False
The expression of [psia/ft] represents the unit of pressure gradient correctly.
True
False
Once can increase precision without affecting accuracy.
True
False
During the experiment with a pycnometer, the liquid of interest must overflow through the capillary tube when the cap (or stopper) is placed on.
True
False
If the correlation coefficient has the value of zero, the two properties (let’s say, x and y) can be viewed as unrelated statistically.
True
False
The API gravity of an oil sample from Heavy Oil reservoir is higher than that from Wet Gas reservoir.
True
False
The hexagonal packing has a lower porosity than the rhombohedral packing
True
False
The API gravity of an oil sample from Heavy Oil reservoir is higher than that from Wet Gas reservoir.
True
False
The falling ball viscometer has the concept of terminal velocity in its design.
True
False
The unit of conversion factor in the Cannon Fenske viscometer is [cp/sec].
True
False
Matrix density of a rock sample is larger than bulk density whether the sample is saturated by water or not.
True
False
If there is a linear relationship between shear stress and shear rate, the fluid is called Newtonian.
True
False
If Ruska permeameter shows the upstream pressure of 15 psig, the pressure drop across the core sample is 15 psi.
True
False
Applying the concept of significant figure, “2.54 + 2.5” makes “5.0”.
True
False
If Ruska permeameter shows the upstream pressure of 15 psig, the pressure drop across the core sample is 15 psi.
True
False
Flammable liquid is a liquid having a flashpoint at or above 100 deg. F
True
False
Applying the concept of significant figures, 0.70 + 0.700 becomes 1.400.
True
False
Flammable liquid is a liquid having a flashpoint at or above 100 deg. F
True
False
Applying the concept of significant figures, 0.70 x 0.700 becomes 0.49.
True
False
Density bottle is another name of pycnometer.
True
False
In the volumetric gas reservoir experiment, the downstream tank pressure was measured by a pressure gauge in [psia].
True
False
Even though ice cube floats on water, ice density is greater than water density.
True
False
Water-washing causes the removal of water soluble compounds so that heavy hydrocarbons are selectively removed.
True
False
Acetone is a good solvent to get rid of oil residue.
True
False
Voluntary respirator use applies if the employees are exposed to hazardous agents above the permissible exposure limits.
True
False
If animal bites occur in the lab, you bite back the animal immediately so that it cannot bite other students.
True
False
The density of hexadecane in our lab experiments was round 52 API gravity.
True
False
Matheson gas permeameter has two pressure gauges to control/monitor both upstream and downstream pressures.
True
False
In our UV scale, “blue white” color represents a lower API gravity than “creamy” color.
True
False
If a tube has a 1 mm x 1 mm cross-section, its resistance to a flow is similar to that of a one-Darcy rock sample.
True
False
The resistivity of NaCl solution increases with the temperature of the solution
True
False
Cannon-Fenske viscometer measures dynamic viscosity which can be translated into kinematic viscosity.
True
False
Klinkenberg correction is for the slippage of liquid molecules at the wall.
True
False
If the condition of a core changes from “unsaturated with brine (the other phase is air)” to “saturated with brine”, the resistance decreases.
True
False
