The Paraffin Series and Properties of Waxy Crude Oils Quiz
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Questions and Answers

Which one of these is a physical classification of petroleum?

  • Solution Gas:Oil ratio
  • Oil Formation volume factor
  • Density, Viscosity (correct)
  • PNA classification

    • What is the equation to calculate API gravity?

  • API = 141.5(ρoil + ρwater) - 131.5
  • API = 141.5(ρoil - ρwater) - 131.5 (correct)
  • API = 141.5(ρwater + ρoil) - 131.5
  • API = 141.5(ρwater - ρoil) - 131.5

    • What is the unit of viscosity for petroleum-related fluids?

  • Centipoise (cp) (correct)
  • Pascal (Pa)
  • Kilogram per cubic meter (kg/m^3)
  • Newton (N)

    • Which term refers to the ratio between solution gas volume and oil volume within the oil in an oil reservoir?

    <p>Solution GOR</p> Signup and view all the answers

    What is the most likely reason for the oil FVF to be greater than 1.0 in an oil reservoir?

    <p>Oil shrinkage by degassing</p> Signup and view all the answers

    At the GOC in a two-phase region, what are the PT conditions?

    <p>Saturated oil and saturated gas</p> Signup and view all the answers

    Which type of hydrocarbon is characterized by having a high wax content?

    <p>Solids</p> Signup and view all the answers

    What is the pour point of the waxy crude oil from the Barryroe Field?

    <p>21°C</p> Signup and view all the answers

    At what temperature does the wax concentration in the waxy crude oil start to solidify?

    <p>46°C</p> Signup and view all the answers

    What is the viscosity of the waxy crude oil at reservoir conditions?

    <p>0.8 cP</p> Signup and view all the answers

    Which of the following is a common non-hydrocarbon component found in natural gas?

    <p>Carbon Dioxide</p> Signup and view all the answers

    Which class of organic molecules in crude oil contains no double bonds?

    <p>Paraffins</p> Signup and view all the answers

    Which type of crude oil generally sells at a premium due to its properties?

    <p>Sweet, light crude</p> Signup and view all the answers

    Which type of natural gas reservoir contains dissolved gas at reservoir conditions?

    <p>Gas cap and oil leg</p> Signup and view all the answers

    Which of the following is a physical classification of petroleum based on viscosity and liquid gravity?

    <p>Conventional</p> Signup and view all the answers

    What is the equation to calculate API gravity?

    <p>API = 141.5(\rho_{oil}/\rho_{water}) - 131.5</p> Signup and view all the answers

    What is the unit of viscosity for petroleum-related fluids?

    <p>Centipoise (cp)</p> Signup and view all the answers

    Which of the following is a common non-hydrocarbon component found in natural gas?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the pour point of the waxy crude oil from the Barryroe Field?

    <p>Below -20°C</p> Signup and view all the answers

    Which type of natural gas reservoir contains dissolved gas at reservoir conditions?

    <p>Wet gas or gas condensate</p> Signup and view all the answers

    What is the unit of viscosity for petroleum-related fluids?

    <p>Centipoise</p> Signup and view all the answers

    Which of the following is a characteristic of waxy crude oil?

    <p>Solid at surface conditions</p> Signup and view all the answers

    What is the cloud point of the waxy crude oil from the Barryroe Field?

    <p>46°C</p> Signup and view all the answers

    What is the main difference between resins and asphaltenes in biodegraded heavy oils?

    <p>Resins have long alkane tails, while asphaltenes have condensed aromatic and naphthenic rings.</p> Signup and view all the answers

    What is the difference between a saturated fluid and an unsaturated fluid?

    <p>A saturated fluid is within the single-phase region, while an unsaturated fluid is on the bubble-point/dew point line.</p> Signup and view all the answers

    Which one of the following equations represents the volume of oil at reservoir conditions as a fraction of the volume of oil at the surface?

    <p>$Oil\ FVF = \frac{Volume\ of\ oil\ at\ reservoir\ conditions},{Volume\ of\ oil\ at\ surface}$</p> Signup and view all the answers

    What does the solution GOR represent in an oil reservoir?

    <p>The ratio between solution gas volume and oil volume within the oil</p> Signup and view all the answers

    In an oil reservoir, what does a solution GOR of 100 mean?

    <p>100 standard cubic feet of gas are dissolved in each barrel of oil</p> Signup and view all the answers

    Which of the following is a characteristic of waxy crude oil?

    <p>High pour point</p> Signup and view all the answers

    What is the equation to calculate API gravity?

    <p>API = 141.5(\rho_{oil}/\rho_{water}) - 131.5</p> Signup and view all the answers

    What is the unit of viscosity for petroleum-related fluids?

    <p>Centipoise (cp)</p> Signup and view all the answers

    Which of the following is a characteristic of waxy crude oil?

    <p>Solid at surface conditions</p> Signup and view all the answers

    What is the pour point of the waxy crude oil from the Barryroe Field?

    <p>21°C</p> Signup and view all the answers

    What is the cloud point of the waxy crude oil from the Barryroe Field?

    <p>46°C</p> Signup and view all the answers

    In an oil reservoir, what does a solution GOR of 100 mean?

    <p>The oil is saturated with gas</p> Signup and view all the answers

    Which one of the following is a common non-hydrocarbon component found in natural gas?

    <p>Carbon Dioxide (CO2)</p> Signup and view all the answers

    What is the main difference between resins and asphaltenes in biodegraded heavy oils?

    <p>Resins are soluble in aromatic solvents while asphaltenes are not</p> Signup and view all the answers

    Which type of natural gas reservoir contains dissolved gas at reservoir conditions?

    <p>Gas condensate reservoir</p> Signup and view all the answers

    Which type of hydrocarbon is characterized by having a high wax content?

    <p>Paraffins</p> Signup and view all the answers

    Which one of the following equations represents the volume of gas at reservoir conditions as a fraction of the volume of gas at the surface?

    <p>$GOR = \frac{V_{gas, reservoir}}{V_{gas, surface}}$</p> Signup and view all the answers

    What is the main difference between black oil and volatile oil reservoirs?

    <p>Black oil reservoirs have a lower oil FVF than volatile oil reservoirs.</p> Signup and view all the answers

    Which one of the following equations represents the ratio between the volume of oil at reservoir conditions and the volume of oil at the surface?

    <p>$Oil FVF = \frac{V_{oil, reservoir}}{V_{oil, surface}}$</p> Signup and view all the answers

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