Paraffins & Asphaltenes MCQ

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• What is Pour point?
  ক

  It is the pressure below which the liquid loses its flow characteristics

  খ

  It is the temperature below which the liquid loses its flow characteristics

  গ

  It is the temperature above which the liquid loses its flow characteristics

  ঘ

  It is the pressure above which the liquid loses its flow characteristics
• What is coiled tubing used in the petroleum industry?
  ক

  Very long metal pipe

  খ

  Type of packer

  গ

  Type of casing

  ঘ

  A truck
• The crystallization of waxes in crude oils leads to Newtonian flow characteristics.
  ক

  True

  খ

  False
• What are Wax crystal modifiers?
  ক

  Assist in Gas production

  খ

  Assist in the agglomeration of Wax

  গ

  Chemicals used for paraffin treatment

  ঘ

  Minimizes the water influx
• Plastic coated pipes are not advisable if down-hole paraffin deposition is predicted.
  ক

  True

  খ

  False
• What is a Down-hole heater?
  ক

  Packer setting equipment

  খ

  Heaters used in the separator

  গ

  Heaters used in ESP

  ঘ

  Used to raise the crude temperature
• If the flowing temperature is maintained above the cloud point then wax deposition will not occur.
  ক

  True

  খ

  False
• Hot oiling will damage PVC pipes.
  ক

  True

  খ

  False
• What is the maximum allowable temperature °F hot oils in pipes with Phenolic coatings?
  ক

  250°F

  খ

  150°F

  গ

  300°F

  ঘ

  450°F
• What is the maximum allowable temperature °F hot oils in epoxy coated pipes?
  ক

  250°F

  খ

  150°F

  গ

  350°F

  ঘ

  450°F
• Why plastic coated pipes or plastic pipes are used in the petroleum industry?
  ক

  To prevent wax deposition

  খ

  To set the packer in place

  গ

  To start the production at early stages

  ঘ

  To prevent H2S production
• What are Dispersants?
  ক

  Type of packer

  খ

  Type of surfactant

  গ

  Type of gas

  ঘ

  Type of reservoir
• Surfactants or dispersants can also be used in combination with hot oil and water treatments.
  ক

  True

  খ

  False
• What is Mechanical scraper?
  ক

  Used to stop production

  খ

  Used to remove packers

  গ

  Used to start production of gas

  ঘ

  Used to remove wax deposits from tubing
• What is Hot Oil circulation in the oil and gas industry?
  ক

  Method of Oil production

  খ

  Method of the packer setting

  গ

  Method of deposited wax removal

  ঘ

  Method of Gas production
• Which of the following is a method of removal of wax?
  ক

  Hot Oil Circulation

  খ

  Packer setting

  গ

  Packer disintegration

  ঘ

  CO2 flooding
• Which of the following statement is incorrect regarding the paraffin and wax depositions?
  ক

  Temperature reduction is the cause of wax deposition

  খ

  High gas-oil ration magnifies the paraffin deposition problems

  গ

  Paraffin deposition is not affected by changes in the water-oil ratio

  ঘ

  Fluids flow through porous media can develop an electrical charge through the steaming potential phenomenon
• Which of the following statement is incorrect regarding the Wax and Asphaletens?
  ক

  Waxes are soluble in oil

  খ

  Waxy emulsions are more likely at lower temp

  গ

  Wettability is the degree of the solid to be wetted by oil or water when both are present

  ঘ

  Asphaltenes exist as colloidal suspension (1nm – 1000nm) and are not stabilized by resins
• Which of the following statement is incorrect regarding the waxes and asphaltenes regarding their different types of phenomenon in deposition?
  ক

  High cloud point crudes form stable emulsions

  খ

  Waxes are high MW alkanes present in crude that crystallize when cooled below the cloud point

  গ

  Waxes are water wet

  ঘ

  Asphaltene deposition is an electrical phenomenon
• Asphaltene deposition is an electrical phenomenon.
  ক

  True

  খ

  False
• The increase in temperature is probably the most common cause of wax deposition.
  ক

  True

  খ

  False