This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Cementing Materials”.
1. Cement is used in between the annular space between the production tubing and casing.
a) True
b) False
View Answer
Explanation: Cement is used in between the formation and casing to support the casing. Another function of cement is to restrict the fluid movement between formations.
2. Portland cement is a mixture of coarsely grained Beryllium compounds.
a) True
b) False
View Answer
Explanation: Portland cement is a mixture of finely grained Calcium compounds. They are mainly composed of Clay or Shale and limestone. Sometimes iron and aluminum oxides may also be added.
3. Which of the following is not formed in the burning process in the manufacturing of cement?
a) Tricalcium Silicate
b) Dicalcium Silicate
c) Tricalcium aluminoferrite
d) Tetracalcium aluminoferrite
View Answer
Explanation: Tricalcium aluminoferrite is not formed in the burning process in the manufacturing of cement. The compounds that formed during the burning process are Tricalcium Silicate, Dicalcium Silicate, Tricalcium aluminate, Tetracalcium aluminoferrite.
4. What is Pozmix cement?
a) Portland cement
b) Portland cement with Pozzolan and about 2% Bentonite
c) Pozzolan with 2% Bentonite
d) Pozzolan with 5% Bentonite
View Answer
Explanation: Pozmix cement is Portland cement with Pozzolan and about 2% Bentonite. Pozzolan is a siliceous material which reacts with water and lime which forms calcium silicates having cementation properties.
5. Refractory cement is formed by which of the following process?
a) Heating Bauxite and Limestone until liquefied then cooling and grinding
b) Heating Bentonite and Limestone until liquefied then cooling and grinding
c) Heating Bentonite and Calcite until liquefied then grinding
d) Heating Bentonite and Calcite until liquefied then cooling and grinding
View Answer
Explanation: Refractory cement is formed by Heating Bauxite and Limestone until liquefied then cooling and grinding. High alumina cement is used in cementing hot zone or in-situ combustion wells.
6. What is Gypsum cement?
a) Hemihydrate form of Gypsum
b) Hemihydrate form of Calcite
c) Hydrated Gypsum
d) Hydrated Calcite
View Answer
Explanation: Gypsum cement is the Hemihydrate form of Gypsum (CaSO4./2 H2O). They set very rapidly. They tend to deteriorate in contact with water. They are rarely used but when used they are mixed with Portland cement.
7. What is Permafrost cement?
a) A blend of Gypsum cement with Pozmix cement
b) A blend of Calcite with Portland cement
c) A blend of Gypsum cement with Bentonite
d) A blend of Gypsum cement with Portland cement
View Answer
Explanation: Permafrost cement is a blend of Gypsum cement with Portland cement. They have a low heat of hydration. They are used in frozen formations. They set at 15oF before freezing. They are mainly used in Arctic areas.
8. Which of the following are effective means of reducing the density of cement?
a) Barite
b) Calcite
c) LCM
d) Pozzolans or Bentonite
View Answer
Explanation: Pozzolans or Bentonite effective means of reducing the density of cement. LCMs are Lost Circulating Materials; they are used in thief zones to control losses. Most slurries range from 11 to 18.5 lb/gal. Any water increasing material will reduce density.
Sanfoundry Global Education & Learning Series – Petroleum Production Operations.
To practice all areas of Petroleum Production Operations, here is complete set of 1000+ Multiple Choice Questions and Answers.
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