Life Cycle of Oil and Gas Field

_____ relies on underground pressure to drive fluids to the surface.

What does Gamma Ray (GR) log measure?

• fluid type

• shale content

• sand content

• size of wellbore

First casing placed into a wellbore is called...

• Production casing

• Cement

• Surface casing

• Conductor casing

What's the correct order of life cycle of oil/gas field?

• Exploration → Development → Production → Abandonment

• Exploration → Development→ Production → Appraisal → Abandonment

• Appraisal → Exploration → Development → Production → Abandonment

• Exploration → Appraisal → Development → Production → Abandonment

What does a company do when a field does not offer economics above and beyond the operating costs?

• Pull out casings and plug wells with cement

• Abandon the facilities as they are

• Further produce oil/gas

• License is kept by the company for auction

When does a company earn revenue?

• Appraisal & Development

• Development & Production

• Appraisal, Development & Production

• Production only

What does a geophysicist do?

• Design wells

• Use well data to find oil/gas resources

• Estimate oil/gas recovery by studying reservoir characteristics

• Use seismic data to find oil/gas resources

Wildcat well is...

• An appraisal wells to conduct further studies

• An exploratory well in underexplored areas

• A production well to extract first oil

The last casing placed into a wellbore is...

Injector/injection wells are drilled to produce oil

• True

• False