problem 1)a) Describe the nature of pollutants generated and their migration onto land, air and water during drilling and petroleum production operations?

b) What is the significance scientifically decommissioning of onshore and offshore structures. Give the outline of the methods involved and safety precautions.

problem 2)a) describe the process of purification of natural gas obtained from a well.

b) Describe the safety measures taken while-handling CNG, LPG, and LNG on commercial scale.

c) prepare a detail note on safety in H₂S environment.

problem 3) Describe the physical and chemical methods to clean-up offshore oil spills.

problem 4)a) describe the guideline design principles involved in environmentally safe transportation of oil and gas through pipelines.

b) prepare notes on:

i) CO₂ sequestration.

ii) Sea survival techniques.

iii) Emergency response upon accident of petroleum product tanker on a busy highway road.

problem 5) describe the case study of recent oil spill in the Gulf of Mexico, emphasizing environmental impact and economic consequences.

problem 6) prepare brief notes on the following:

a) Water production and water disposal problems in CBM fields.

b) Possible effects of recent volcanic ash eruption in Iceland on petroleum industry in Northern Europe.

c) Site assessment for environmental impact of petroleum operations.

d) Significance of addition of ethanol to gasoline.

e) Disaster Management Plan for an oil installation