Which of the following lists the four main periods in the life of a petroleum reservoir?

Which of the following lists the four main periods in the life of a petroleum reservoir?

• A. Exploration, Development, Production, Abandonment
• B. Exploration, Drilling, Production, Decommissioning
• C. Discovery, Appraisal, Development, Decommissioning
• D. Prospecting, Construction, Extraction, Decommissioning

Answer: (A)

A petroleum reservoir follows four broad stages from the initial search to closing the field: exploration, development, production, and abandonment. Exploration is about locating hydrocarbons and assessing how much might be recoverable. Development then turns those findings into an operating field, planning and installing wells and surface facilities. Production is the actual extraction and processing of oil and gas, with ongoing management to maximize recovery. Abandonment marks the end, with wells plugged, facilities removed, and the site restored to meet regulations. This sequence fits because you need exploration first to identify potential and estimate value, development to prepare the field for production, production to extract the resources, and abandonment to properly close the project. The other lists mix in activities or terms that aren’t the standard four-phase framework: drilling is a key activity within development, discovery and appraisal are specific exploration steps, and terms like construction or extraction don’t align with the conventional four-stage life cycle (and decommissioning is just another word for abandonment).

A petroleum reservoir follows four broad stages from the initial search to closing the field: exploration, development, production, and abandonment. Exploration is about locating hydrocarbons and assessing how much might be recoverable. Development then turns those findings into an operating field, planning and installing wells and surface facilities. Production is the actual extraction and processing of oil and gas, with ongoing management to maximize recovery. Abandonment marks the end, with wells plugged, facilities removed, and the site restored to meet regulations.

This sequence fits because you need exploration first to identify potential and estimate value, development to prepare the field for production, production to extract the resources, and abandonment to properly close the project. The other lists mix in activities or terms that aren’t the standard four-phase framework: drilling is a key activity within development, discovery and appraisal are specific exploration steps, and terms like construction or extraction don’t align with the conventional four-stage life cycle (and decommissioning is just another word for abandonment).