Reservoir Geology and Petroleum Systems - Petroleum Exploration - Petroleum Engineering Previous Year Questions

1

2016 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2016

The three main stages of evolution of organic matter in sediments are Catagenesis (C), Diagenesis (D) and Metagenesis (M). Their chronological order is

A

C - M

B

D - M

C

M - C

D

M - D

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2

2017 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2017

Which of these is a must for petroleum generation and accumulation?

A

Source rocks

B

Porous reservoir rocks

C

Impermeable cap rocks

D

All of the above

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3

2017 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2017

Which of these is NOT a sedimentary rock?

A

Shale

B

Sandstone

C

Carbonate

D

None of the above

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4

2020 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2020

Which one of the following options is the correct combination of kerogen Type and the source from which it is derived?

A

Type I - Lacustrine, Type II - Terrestrial, Type III - Marine, Type IV - Varied

B

Type I - Lacustrine, Type II - Marine, Type III - Terrestrial, Type IV - Varied

C

Type I - Lacustrine, Type II - Varied, Type III - Marine, Type IV - Terrestrial

D

Type I - Marine, Type II - Terrestrial, Type III - Varied, Type IV - Lacustrine

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5

2021 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2021

Match the petroleum reservoir forming traps (GROUP I) with their general classifications (GROUP II).

GROUP I	GROUP II
(P) Dome and Anticlinal Trap	(I) A geological structure with bodies of porous lithofacies embedded in impermeable lithofacies.
(Q) Salt Dome	(II) A geological structure formed by the tectonic uplift and/or folding of sedimentary rocks.
(R) Fault Trap	(III) A geological structure caused by the upward intrusion of a diapiric body of halite.
(S) Lenticular Trap	(IV) A geological plane with a sealing effect that acts as a fluid migration barrier for reservoir rocks.

A

P – III, Q – II, R – IV, S – I

B

P – II, Q – III, R – IV, S – I

C

P – III, Q – I, R – II, S – IV

D

P – II, Q – III, R – I, S – IV

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6

2025 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2025

Classification of kerogen is based on the relative amount of Carbon (C), Hydrogen (H) and Oxygen (O).
Which ONE of the following options is CORRECT about Type II kerogen?

A

It is low in aliphatic compounds and H:C ratio < 0.84.

B

It is rich in aliphatic compounds and H:C ratio < 0.84.

C

It is low in aliphatic compounds and H:C ratio > 1.0.

D

It is rich in aliphatic compounds and H:C ratio > 1.0.

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7

2023 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2023

Which of the following is a sedimentary rock?

A

Amphibolite

B

Chalk

C

Gabbro

D

Schist

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8

2023 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2023

Kerogen is an intermediate compound in the process of petroleum formation in a sedimentary basin. This is typically classified into four categories (Type-I, Type-II, Type-III and Type-IV) based on the relative amount of carbon (C), hydrogen (H), oxygen (O) present in it (shown in the figure below).
Which of the following is the X-axis and Y-axis, respectively?

A

H:C ratio and O:C ratio

B

O:C ratio and H:C ratio

C

H ratio and C:O ratio

D

O ratio and C:H ratio

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9

2023 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2023

Which of the following hydrocarbon trap(s) is/are a result of sedimentary facies changes?

A

Salt dome

B

Unconformity

C

Pinch out

D

Sand lens

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10

2026 · Petroleum Engineering · Petroleum Exploration · Reservoir Geology and Petroleum Systems

Petroleum Engineering (PE) 2026

Choose the CORRECT match of the sedimentary rocks in GROUP X with their processes/mechanisms of formation in GROUP Y.

GROUP X	GROUP Y
(P) Evaporite	(I) Physical process mainly consisting of lithification or cementation of deposition
(Q) Sandstone	(II) Chemical process and depositions by marine living organisms
(R) Limestone	(III) Anaerobic deposition of organic materials in mud bed
(S) Siltstones	(IV) Evaporation and precipitations of marine water

A

P - IV; Q - I; R - II; S - III

B

P - II; Q - IV; R - I; S - III

C

P - II; Q - III; R - IV; S - I

D

P - IV; Q - III; R - I; S - II

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