Oil Sands Development Challenges and Concerns

Oil sands, also known as tar sands, are a mixture of sand, clay, water, and bitumen, a heavy crude oil. Due to its high viscosity, conventional drilling is ineffective, necessitating methods like open-pit mining and in-situ extraction. Bitumen near the surface is mined, while deeper deposits require steam-assisted gravity drainage. Once extracted, bitumen is upgraded and refined into petroleum products. Major reserves are in Canada and Venezuela. Despite its energy density, oil sands development is environmentally challenging, with high carbon emissions, water usage, and land disturbance.

What is the primary reason conventional drilling techniques cannot be used for extracting bitumen?

• It is located too deep underground.

• It is too light and evaporates quickly.

• It is too expensive.

• It is too viscous to flow.

Which method is used to extract bitumen located within 75 meters of the surface?

• Hydraulic fracturing

• Open-pit mining

• In-situ mining

• Directional drilling

What is the purpose of the upgrading process in bitumen processing?

• To separate sand from bitumen

• To make bitumen lighter and more similar to conventional oil

• To increase the viscosity of bitumen

• To reduce the carbon content of bitumen

Where are the two largest oil sands reserves in the world located?

• United States and Mexico

• Saudi Arabia and Russia

• China and India

• Northern Alberta, Canada and Venezuela

What is a major environmental concern associated with oil sands development?

• Decreased land use

• Increased biodiversity

• Reduced greenhouse gas emissions

• Heavy water use and contamination

What is a tailings pond used for in oil sands mining?

• Storing extracted bitumen

• Storing waste water from mining processes

• Storing fresh water

• Storing sand and clay

Why is oil derived from oil sands considered more carbon-intensive than conventional crude?

• Due to the high energy density of oil sands

• Because it requires less processing

• Due to the greenhouse gas emissions from production techniques

• Because it is located in remote areas

What is a significant social challenge posed by oil sands development?

• Increased employment opportunities

• Displacement of local communities

• Enhanced educational facilities

• Improved infrastructure

What is a key economic disadvantage of oil sands production?

• Limited global demand

• Lower energy density

• Higher production costs

• Lack of technological advancement

What is the main advantage of oil sands as a source of energy?

• Low environmental impact

• High energy density

• Abundant water resources

• Minimal processing required